Title: Cheap Flights from Montreal (YUL) to Helena (HLN) - Expedia.ca

 

![Cathedral of St. Helena featuring landscape views, a city and night scenes](https://images.trvl-media.com/place/6115502/23c3c7c5-fe1b-40e6-b670-7f248391f3ad.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

Photo by Bob Webster

![](https://images.trvl-media.com/place/6115502/23c3c7c5-fe1b-40e6-b670-7f248391f3ad.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

# Cheap Flights from Montreal (YUL) to Helena (HLN)

-   [Roundtrip](?flightType=roundtrip)
-   [One-way](?flightType=oneway)
-   [Multi-city](?flightType=multicity)

### Travellers

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InfantsYounger than 2

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## Popular airlines from Trudeau International Airport (YUL) to Helena, MT (HLN-Helena Regional)

-   ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg)
    
    Delta
    
    [](https://www.expedia.ca/Flights-Search?leg1=from:yul,to:hln,departure:19/11/2025TANYT&leg2=from:hln,to:yul,departure:26/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])

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## Cheap flights from Montreal (YUL) to Helena (HLN)

Prices were available within the past 7 days and start at for one-way flights and CA $1,303 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,303

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1302.43&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4VkAAWAFqCU1BSU5DTEFTQ3IIVkFVTkEwTUwKNAjEmAESAzQyMxjgXCDyEiiEt5IDMPO4kgM4VkABWAFqCU1BSU5DTEFTQ3IIVkFVTkEwTUwKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOFhAAVgBaglNQUlOQ0xBU0NyCFhGVkdBME1MCqUBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhIQABYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQo1CMSYARIEMjkyNBjyEiDMfCi845IDMNjkkgM4SEABWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDU0ODkYzHwgmF0onOeSAzC26JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1REgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,446

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1445.08&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4S0AAWAFqCU1BSU5DTEFTQ3IIS0EwTkEwTVEKNAjEmAESAzUyNhjgXCDyEijKt5IDMLy5kgM4S0ABWAFqCU1BSU5DTEFTQ3IIS0EwTkEwTVEKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOEtAAVgBaglNQUlOQ0xBU0NyCEtBME5BME1RCqUBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhIQABYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQo1CMSYARIEMjkyNBjyEiDMfCi845IDMNjkkgM4SEABWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDU0ODkYzHwgmF0onOeSAzC26JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1REgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,523

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1522.93&airProductToken=AQqlAQo1CMSYARIENTQyNxiYXSDMfCjUs5IDMIe1kgM4VkAAWAFqCU1BSU5DTEFTQ3IIVkFVTkEwTUwKNQjEmAESBDI2NTgYzHwg8hIo0reSAzCEuZIDOFZAAVgBaglNQUlOQ0xBU0NyCFZBVU5BME1MCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhYQAFYAWoJTUFJTkNMQVNDcghYRlZHQTBNTAqkAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4QkAAWAFqCU1BSU5DTEFTQ3IIQkEwR0EwTVEKNAjEmAESAzg4NRjyEiDgXCjL45IDMLHlkgM4QkABWAFqCU1BSU5DTEFTQ3IIQkEwR0EwTVEKNQjEmAESBDI0MTYY4FwgmF0oq-eSAzDM6JIDOEJAAVgBaglNQUlOQ0xBU0NyCEJBMEdBME1REgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,537

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1536.51&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4VUAAWAFqCU1BSU5DTEFTQ3IIVUFVTkEwTUwKNAjEmAESAzQyMxjgXCDyEiiEt5IDMPO4kgM4VUABWAFqCU1BSU5DTEFTQ3IIVUFVTkEwTUwKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOFVAAVgBaglNQUlOQ0xBU0NyCFVBVU5BME1MCqIBCjUIxJgBEgQzODgwGOdqIPISKKrkkgMwiuWSAzhNQABYAWoJTUFJTkNMQVNDcghNQTBOQTBNUQo2CMSYARIEMzU4NRjyEiC4jQEo9-WSAzCJ55IDOE1AAVgBaglNQUlOQ0xBU0NyCE1BME5BME1RCjEI16YBEgM3ODQYuI0BIJhdKMjpkgMw8euSAzhMQAFYAWoFRUNPTk9yCExDVkQwUUVTEgoIARABGAEqAldTGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,572

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1571.08&airProductToken=AQqlAQo1CMSYARIENTEzMxiYXSDMfCi0t5IDMOe4kgM4SEAAWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDI2MDcYzHwg8hIopLmSAzDYupIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQqlAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4SEAAWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDI5MjQY8hIgzHwovOOSAzDY5JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQ1NDg5GMx8IJhdKJznkgMwtuiSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,578

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1577.46&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4VEAAWAFqCU1BSU5FWFRSQXIIVEFVWkEwTUwKNAjEmAESAzQyMxjgXCDyEiiEt5IDMPO4kgM4VEABWAFqCU1BSU5FWFRSQXIIVEFVWkEwTUwKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOFhAAVgBaglNQUlORVhUUkFyCFhGVjVBME1MCqUBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhIQABYAWoJTUFJTkVYVFJBcghIQTc1QTBNTAo1CMSYARIEMjkyNBjyEiDMfCi845IDMNjkkgM4SEABWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwKNQjEmAESBDU0ODkYzHwgmF0onOeSAzC26JIDOEhAAVgBaglNQUlORVhUUkFyCEhBNzVBME1MEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,590

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1589.01&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4S0AAWAFqCU1BSU5DTEFTQ3IIS0EwTkEwTVEKNAjEmAESAzUyNhjgXCDyEijKt5IDMLy5kgM4S0ABWAFqCU1BSU5DTEFTQ3IIS0EwTkEwTVEKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOEtAAVgBaglNQUlOQ0xBU0NyCEtBME5BME1RCqIBCjUIxJgBEgQzODgwGOdqIPISKKrkkgMwiuWSAzhNQABYAWoJTUFJTkNMQVNDcghNQTBOQTBNUQo2CMSYARIEMzU4NRjyEiC4jQEo9-WSAzCJ55IDOE1AAVgBaglNQUlOQ0xBU0NyCE1BME5BME1RCjEI16YBEgM3ODQYuI0BIJhdKMjpkgMw8euSAzhMQAFYAWoFRUNPTk9yCExDVkQwUUVTEgoIARABGAEqAldTGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,614

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1613.08&airProductToken=AQqmAQo2CMSYARIENTE0OBiYXSDjtAEorbaSAzCmt5IDOE1AAFgBaglNQUlOQ0xBU0NyCE1BVkdBME1RCjUIxJgBEgM3NjUY47QBIPISKNm4kgMwy7qSAzhNQAFYAWoJTUFJTkNMQVNDcghNQVZHQTBNUQo1CMSYARIEMzgzORjyEiDnaiiZu5IDMPK7kgM4TUABWAFqCU1BSU5DTEFTQ3IITUFWR0EwTVEKpQEKNQjEmAESBDM5MDEY52og8hIogeGSAzDb4ZIDOEhAAFgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQyOTI0GPISIMx8KLzjkgMw2OSSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQo1CMSYARIENTQ4ORjMfCCYXSic55IDMLbokgM4SEABWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,626

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1625.83&airProductToken=AQqlAQo1CMSYARIENTQyNxiYXSDMfCjUs5IDMIe1kgM4UUAAWAFqCU1BSU5DTEFTQ3IIUUFWR0EwTVEKNQjEmAESBDI2NTEYzHwg8hIo6baSAzCYuJIDOFFAAVgBaglNQUlOQ0xBU0NyCFFBVkdBME1RCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhYQAFYAWoJTUFJTkNMQVNDcghYRlZHQTBNTAqlAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4SEAAWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDI5MjQY8hIgzHwovOOSAzDY5JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQ1NDg5GMx8IJhdKJznkgMwtuiSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,666

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1665.58&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4S0AAWAFqCU1BSU5DTEFTQ3IIS0FVR0EwTVEKNAjEmAESAzUyNhjgXCDyEijKt5IDMLy5kgM4S0ABWAFqCU1BSU5DTEFTQ3IIS0FVR0EwTVEKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOEtAAVgBaglNQUlOQ0xBU0NyCEtBVUdBME1RCqQBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhCQABYAWoJTUFJTkNMQVNDcghCQTBHQTBNUQo0CMSYARIDODM1GPISIOBcKPvikgMw4eSSAzhCQAFYAWoJTUFJTkNMQVNDcghCQTBHQTBNUQo1CMSYARIEMjQxNhjgXCCYXSir55IDMMzokgM4QkABWAFqCU1BSU5DTEFTQ3IIQkEwR0EwTVESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,677

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1676.08&airProductToken=AQqkAQo1CMSYARIEMjY0MxiYXSDgXCjUs5IDMIC1kgM4S0AAWAFqCU1BSU5FWFRSQXIIS0FVNUEwTUwKNAjEmAESAzUyNhjgXCDyEijKt5IDMLy5kgM4S0ABWAFqCU1BSU5FWFRSQXIIS0FVNUEwTUwKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOEtAAVgBaglNQUlORVhUUkFyCEtBVTVBME1MCqUBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhIQABYAWoJTUFJTkVYVFJBcghIQTc1QTBNTAo1CMSYARIEMjkyNBjyEiDMfCi845IDMNjkkgM4SEABWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwKNQjEmAESBDU0ODkYzHwgmF0onOeSAzC26JIDOEhAAVgBaglNQUlORVhUUkFyCEhBNzVBME1MEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,716

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1715.01&airProductToken=AQqlAQo1CMSYARIENTEzMxiYXSDMfCi0t5IDMOe4kgM4SEAAWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDI2MDcYzHwg8hIopLmSAzDYupIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQqiAQo1CMSYARIEMzg4MBjnaiDyEiiq5JIDMIrlkgM4TUAAWAFqCU1BSU5DTEFTQ3IITUEwTkEwTVEKNgjEmAESBDM1ODUY8hIguI0BKPflkgMwieeSAzhNQAFYAWoJTUFJTkNMQVNDcghNQTBOQTBNUQoxCNemARIDNzg0GLiNASCYXSjI6ZIDMPHrkgM4TEABWAFqBUVDT05PcghMQ1ZEMFFFUxIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE)

![WestJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/WS.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,756

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1755.88&airProductToken=AQqiAQoxCNemARIDNzg1GJhdILiNASiQtJIDMOS2kgM4TEAAWAFqBUVDT05PcghMQ1ZEMFFFUwo2CMSYARIEMzcxMBi4jQEg8hIo_7eSAzCQuZIDOEJAAVgBaglNQUlOQ0xBU0NyCEJBMFFBME1RCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhCQAFYAWoJTUFJTkNMQVNDcghCQTBRQTBNUQqlAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4SEAAWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDI5MjQY8hIgzHwovOOSAzDY5JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1RCjUIxJgBEgQ1NDg5GMx8IJhdKJznkgMwtuiSAzhIQAFYAWoJTUFJTkNMQVNDcghIQTdHQTBNURIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,758

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1757.01&airProductToken=AQqmAQo2CMSYARIENTE0OBiYXSDjtAEorbaSAzCmt5IDOE1AAFgBaglNQUlOQ0xBU0NyCE1BVkdBME1RCjUIxJgBEgM3NjUY47QBIPISKNm4kgMwy7qSAzhNQAFYAWoJTUFJTkNMQVNDcghNQVZHQTBNUQo1CMSYARIEMzgzORjyEiDnaiiZu5IDMPK7kgM4TUABWAFqCU1BSU5DTEFTQ3IITUFWR0EwTVEKogEKNQjEmAESBDM4ODAY52og8hIoquSSAzCK5ZIDOE1AAFgBaglNQUlOQ0xBU0NyCE1BME5BME1RCjYIxJgBEgQzNTg1GPISILiNASj35ZIDMInnkgM4TUABWAFqCU1BSU5DTEFTQ3IITUEwTkEwTVEKMQjXpgESAzc4NBi4jQEgmF0oyOmSAzDx65IDOExAAVgBagVFQ09OT3IITENWRDBRRVMSCggBEAEYASoCV1MYASIECAEQASgCKAMoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,792

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1791.58&airProductToken=AQqkAQo1CMSYARIEMjYyORiYXSDgXCittpIDMNu3kgM4QkAAWAFqCU1BSU5DTEFTQ3IIQkEwR0EwTVEKNAjEmAESAzY1MxjgXCDyEijZuJIDMMy6kgM4QkABWAFqCU1BSU5DTEFTQ3IIQkEwR0EwTVEKNQjEmAESBDM4MzkY8hIg52oombuSAzDyu5IDOEJAAVgBaglNQUlOQ0xBU0NyCEJBMEdBME1RCqUBCjUIxJgBEgQzOTAxGOdqIPISKIHhkgMw2-GSAzhIQABYAWoJTUFJTkNMQVNDcghIQTdHQTBNUQo1CMSYARIEMjkyNBjyEiDMfCi845IDMNjkkgM4SEABWAFqCU1BSU5DTEFTQ3IISEE3R0EwTVEKNQjEmAESBDU0ODkYzHwgmF0onOeSAzC26JIDOEhAAVgBaglNQUlOQ0xBU0NyCEhBN0dBME1REgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,798

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1797.96&airProductToken=AQqlAQo1CMSYARIENTQyNxiYXSDMfCjUs5IDMIe1kgM4VEAAWAFqCU1BSU5FWFRSQXIIVEFVWkEwTUwKNQjEmAESBDI2NTgYzHwg8hIo0reSAzCEuZIDOFRAAVgBaglNQUlORVhUUkFyCFRBVVpBME1MCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhYQAFYAWoJTUFJTkVYVFJBcghYRlY1QTBNTAqkAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4QkAAWAFqCU1BSU5FWFRSQXIIQkEwNUEwTUwKNAjEmAESAzg4NRjyEiDgXCjL45IDMLHlkgM4QkABWAFqCU1BSU5FWFRSQXIIQkEwNUEwTUwKNQjEmAESBDI0MTYY4FwgmF0oq-eSAzDM6JIDOEJAAVgBaglNQUlORVhUUkFyCEJBMDVBME1MEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,803

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1802.08&airProductToken=AQqlAQo1CMSYARIENTEzMxiYXSDMfCi0t5IDMOe4kgM4SEAAWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwKNQjEmAESBDI2MDcYzHwg8hIopLmSAzDYupIDOEhAAVgBaglNQUlORVhUUkFyCEhBNzVBME1MCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhIQAFYAWoJTUFJTkVYVFJBcghIQTc1QTBNTAqlAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4SEAAWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwKNQjEmAESBDI5MjQY8hIgzHwovOOSAzDY5JIDOEhAAVgBaglNQUlORVhUUkFyCEhBNzVBME1MCjUIxJgBEgQ1NDg5GMx8IJhdKJznkgMwtuiSAzhIQAFYAWoJTUFJTkVYVFJBcghIQTc1QTBNTBIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,834

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1833.58&airProductToken=AQqmAQo2CMSYARIENTE0OBiYXSDjtAEorbaSAzCmt5IDOE1AAFgBaglNQUlOQ0xBU0NyCE1BVkdBME1RCjUIxJgBEgM3NjUY47QBIPISKNm4kgMwy7qSAzhNQAFYAWoJTUFJTkNMQVNDcghNQVZHQTBNUQo1CMSYARIEMzgzORjyEiDnaiiZu5IDMPK7kgM4TUABWAFqCU1BSU5DTEFTQ3IITUFWR0EwTVEKpAEKNQjEmAESBDM5MDEY52og8hIogeGSAzDb4ZIDOEJAAFgBaglNQUlOQ0xBU0NyCEJBMEdBME1RCjQIxJgBEgM4ODUY8hIg4Fwoy-OSAzCx5ZIDOEJAAVgBaglNQUlOQ0xBU0NyCEJBMEdBME1RCjUIxJgBEgQyNDE2GOBcIJhdKKvnkgMwzOiSAzhCQAFYAWoJTUFJTkNMQVNDcghCQTBHQTBNURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,845

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1844.08&airProductToken=AQqmAQo2CMSYARIENTE0OBiYXSDjtAEorbaSAzCmt5IDOE1AAFgBaglNQUlORVhUUkFyCE1BVjVBME1MCjUIxJgBEgM3NjUY47QBIPISKNm4kgMwy7qSAzhNQAFYAWoJTUFJTkVYVFJBcghNQVY1QTBNTAo1CMSYARIEMzgzORjyEiDnaiiZu5IDMPK7kgM4TUABWAFqCU1BSU5FWFRSQXIITUFWNUEwTUwKpQEKNQjEmAESBDM5MDEY52og8hIogeGSAzDb4ZIDOEhAAFgBaglNQUlORVhUUkFyCEhBNzVBME1MCjUIxJgBEgQyOTI0GPISIMx8KLzjkgMw2OSSAzhIQAFYAWoJTUFJTkVYVFJBcghIQTc1QTBNTAo1CMSYARIENTQ4ORjMfCCYXSic55IDMLbokgM4SEABWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Jul 15 - Sun, Jul 19

YUL

Montreal

HLN

Helena

CA $1,877

Roundtrip

found 7 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:15/07/2026TANYT&leg2=from:HLN,to:YUL,departure:19/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1876.71&airProductToken=AQqlAQo1CMSYARIENTQyNxiYXSDMfCjUs5IDMIe1kgM4UUAAWAFqCU1BSU5FWFRSQXIIUUFWNUEwTUwKNQjEmAESBDI2NTEYzHwg8hIo6baSAzCYuJIDOFFAAVgBaglNQUlORVhUUkFyCFFBVjVBME1MCjUIxJgBEgQzODM5GPISIOdqKJm7kgMw8ruSAzhYQAFYAWoJTUFJTkVYVFJBcghYRlY1QTBNTAqlAQo1CMSYARIEMzkwMRjnaiDyEiiB4ZIDMNvhkgM4SEAAWAFqCU1BSU5FWFRSQXIISEE3NUEwTUwKNQjEmAESBDI5MjQY8hIgzHwovOOSAzDY5JIDOEhAAVgBaglNQUlORVhUUkFyCEhBNzVBME1MCjUIxJgBEgQ1NDg5GMx8IJhdKJznkgMwtuiSAzhIQAFYAWoJTUFJTkVYVFJBcghIQTc1QTBNTBIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE)

Flight from Montreal to Helena (YUL - HLN) route information

| Origin airport | Pierre Elliott Trudeau Intl. |
| --- | --- |
| Destination airport | Helena Regional |
| Airlines serving | Delta |
| Roundtrip price | CA $1,302 |
| Distance | 2908 km |

## Montreal to Helena Flights

**The easy way to book your flights from Montreal to Helena** 

With Expedia, it’s simple to find and book flights to Helena from Montreal whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Helena Regional, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Montreal to Helena today, tomorrow, or this week.  

**Save dollars with cheap flights from Pierre Elliott Trudeau Intl., YUL to Helena Regional, HLN** 

Sort your search results by price to find great deals on your flight from Montreal to Helena—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Helena from Montreal currently is just CA $1,303 rising to CA $1,877.  

Here are more money-saving tips: 

-   Fly in July when flight prices are normally at their lowest 
-   Book about a month to 6 weeks before you travel for the best prices to Helena  
-   Avoid peak season and weekends when flights can cost more
-   Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
-   One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

**Reasons to choose Expedia for your flight to Helena from Montreal** 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Helena with Expedia today.

## Frequently asked questions

### How much is a flight from YUL to Helena Regional Airport (HLN)?

> If you're planning on travelling between YUL and HLN, round-trip flights start from CA $1,303. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year, so don't hang about. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.

### Do I need to pay a cancellation fee if I cancel my flight from YUL to HLN?

> Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter).

### How do I find cheap flights from Montreal Airport to Helena Regional Airport that have flexible change policies?

> Use our "No change fees" filter to find flexible ticketing options for your flight from YUL to HLN. This allows you to lock in a fantastic price ahead of time and still have the freedom to reschedule without any additional fees. Keep in mind that you'll need to cover the fare difference.

### How far is the flight from Montreal Airport to HLN?

> The flight distance from Dorval to Helena is 2,900 kilometres. Pack yourself a drink, some snacks and a laptop filled with movies. Keep yourself busy in the air and the hours will fly by.

### Which airlines fly direct from Pierre Elliott Trudeau Intl. Airport (YUL) to Helena Regional Airport?

> You won't find any airlines flying directly between Montréal–Trudeau and Helena Regional Airport (HLN), so be ready to make at least one stop on your journey. A layover can be a good way to break up a trip!

### Are Montréal–Trudeau to HLN flight tickets cheaper when they're purchased at the last minute?

> Flight tickets from YUL to Helena Regional Airport (HLN) are available up to a year prior to departure on Expedia. And although you may occasionally pick up a fantastic last-minute deal, it's not something you should count on. Also, booking your flights in advance means you'll have more options — and you can avoid getting trapped in the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so check back often for all the latest specials.

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-   [Flights from West Palm Beach (PBI) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/pbi/gtf/west-palm-beach-to-great-falls)
-   [Flights from Portland (PDX) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/pdx/gtf/portland-to-great-falls)
-   [Flights from Pittsburgh (PIT) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/pit/gtf/pittsburgh-to-great-falls)
-   [Flights from Pensacola (PNS) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/pns/gtf/pensacola-to-great-falls)
-   [Flights from Palm Springs (PSP) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/psp/gtf/palm-springs-to-great-falls)
-   [Flights from Provo (PVU) to Butte (BTM)](https://www.expedia.ca/lp/flights/pvu/btm/provo-to-butte)
-   [Flights from Provo (PVU) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/pvu/gtf/provo-to-great-falls)
-   [Flights from Raleigh (RDU) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/rdu/gtf/raleigh-to-great-falls)
-   [Flights from Fort Myers (RSW) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/rsw/gtf/fort-myers-to-great-falls)
-   [Flights from San Antonio (SAT) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/sat/gtf/san-antonio-to-great-falls)
-   [Flights from Savannah (SAV) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/sav/gtf/savannah-to-great-falls)
-   [Flights from Louisville (SDF) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/sdf/gtf/louisville-to-great-falls)
-   [Flights from Sidney (SDY) to Butte (BTM)](https://www.expedia.ca/lp/flights/sdy/btm/sidney-to-butte)
-   [Flights from San Francisco (SFO) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/sfo/gtf/san-francisco-to-great-falls)
-   [Flights from Sacramento (SMF) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/smf/gtf/sacramento-to-great-falls)
-   [Flights from Sydney (SYD) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/syd/gtf/sydney-to-great-falls)
-   [Flights from Tampa (TPA) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/tpa/gtf/tampa-to-great-falls)
-   [Flights from Tri-Cities (TRI) to Butte (BTM)](https://www.expedia.ca/lp/flights/tri/btm/tri-cities-to-butte)
-   [Flights from Tucson (TUS) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/tus/gtf/tucson-to-great-falls)
-   [Flights from Victoria (VCT) to Butte (BTM)](https://www.expedia.ca/lp/flights/vct/btm/victoria-to-butte)
-   [Flights from Wrangell (WRG) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/wrg/gtf/wrangell-to-great-falls)
-   [Flights from Williston (XWA) to Butte (BTM)](https://www.expedia.ca/lp/flights/xwa/btm/williston-to-butte)
-   [Flights from Nanaimo (YCD) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/ycd/gtf/nanaimo-to-great-falls)
-   [Flights from Edmonton (YEG) to Butte (BTM)](https://www.expedia.ca/lp/flights/yeg/btm/edmonton-to-butte)
-   [Flights from Edmonton (YEG) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yeg/gtf/edmonton-to-great-falls)
-   [Flights from Halifax (YHZ) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yhz/gtf/halifax-to-great-falls)
-   [Flights from Kitchener (YKF) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/ykf/gtf/kitchener-to-great-falls)
-   [Flights from Kelowna (YLW) to Butte (BTM)](https://www.expedia.ca/lp/flights/ylw/btm/kelowna-to-butte)
-   [Flights from Ottawa (YOW) to Butte (BTM)](https://www.expedia.ca/lp/flights/yow/btm/ottawa-to-butte)
-   [Flights from Ottawa (YOW) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yow/gtf/ottawa-to-great-falls)
-   [Flights from Québec (YQB) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yqb/gtf/quebec-to-great-falls)
-   [Flights from The Pas (YQD) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yqd/gtf/the-pas-to-great-falls)
-   [Flights from Lethbridge (YQL) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yql/gtf/lethbridge-to-great-falls)
-   [Flights from Regina (YQR) to Butte (BTM)](https://www.expedia.ca/lp/flights/yqr/btm/regina-to-butte)
-   [Flights from Thunder Bay (YQT) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yqt/gtf/thunder-bay-to-great-falls)
-   [Flights from Toronto (YTO) to Butte (BTM)](https://www.expedia.ca/lp/flights/yto/btm/toronto-to-butte)
-   [Flights from Montreal (YUL) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yul/gtf/montreal-to-great-falls)
-   [Flights from Vancouver (YVR) to Butte (BTM)](https://www.expedia.ca/lp/flights/yvr/btm/vancouver-to-butte)
-   [Flights from Winnipeg (YWG) to Butte (BTM)](https://www.expedia.ca/lp/flights/ywg/btm/winnipeg-to-butte)
-   [Flights from Cranbrook (YXC) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yxc/gtf/cranbrook-to-great-falls)
-   [Flights from Saskatoon (YXE) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yxe/gtf/saskatoon-to-great-falls)
-   [Flights from Medicine Hat (YXH) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yxh/gtf/medicine-hat-to-great-falls)
-   [Flights from Prince George (YXS) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yxs/gtf/prince-george-to-great-falls)
-   [Flights from Abbotsford (YXX) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yxx/gtf/abbotsford-to-great-falls)
-   [Flights from Calgary (YYC) to Butte (BTM)](https://www.expedia.ca/lp/flights/yyc/btm/calgary-to-butte)
-   [Flights from Calgary (YYC) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yyc/gtf/calgary-to-great-falls)
-   [Flights from St. John's (YYT) to Great Falls (GTF)](https://www.expedia.ca/lp/flights/yyt/gtf/st-johns-to-great-falls)
-   [Flights from Toronto (YYZ) to Butte (BTM)](https://www.expedia.ca/lp/flights/yyz/btm/toronto-to-butte)

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