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 Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Trudeau International Airport (YUL) to Helena, MT (HLN-Helena Regional) - ![](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:19/02/2026TANYT&leg2=from:HLN,to:YUL,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:HLN,departure:19/02/2026TANYT&leg2=from:HLN,to:YUL,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## 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 $783 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 18 - Mon, Mar 23 YUL Montreal HLN Helena CA $783 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:18/03/2026TANYT&leg2=from:HLN,to:YUL,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:782.12&airProductToken=AQqiAQo0CNWCARIEMzU5MBiYXSCIGCj7-YcDMIH7hwM4TkAAWAFqCEVDT0JBU0lDcghHTkE1QTBCTgo0CNWCARIEMTU4NxiIGCCDaSjD-4cDML39hwM4TkABWAFqCEVDT0JBU0lDcghHTkE1QTBCTgo0CNWCARIENDcwNRiDaSDnaijO_4cDMM2AiAM4TkABWAFqCEVDT0JBU0lDcghHTkE1QTBCTgqiAQo0CNWCARIENTkxMRjnaiCDaSjOtYgDMM62iAM4TkAAWAFqCEVDT0JBU0lDcghHTkE1QTBCTgo0CNWCARIEMTkyNBiDaSCIGCiHuogDMM27iAM4TkABWAFqCEVDT0JBU0lDcghHTkE1QTBCTgo0CNWCARIEMzUzORiIGCCYXSipv4gDMKTAiAM4TkABWAFqCEVDT0JBU0lDcghHTkE1QTBCThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $788 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:787.50&airProductToken=AQqtAQpACNWCARIEODQ4NxiYXSDEjQEo1aqHAzC2q4cDOEdAAFgBagdFQ09OT01ZcghHTkEyQTJUR3oKCMGGARIEODQ4Nwo0CNWCARIEMjA1OBjEjQEgg2kokq6HAzCosIcDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENDcwNRiDaSDnaijusIcDMO2xhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCqoBCjMI1YIBEgQ1OTExGOdqIINpKO7mhwMw7ueHAzhLQABYAWoHRUNPTk9NWXIIS0ZBMkFERE4KMgjVggESAzM3NxiDaSCuHCjP6YcDMOXqhwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCj8I1YIBEgQ4NDUyGK4cIJhdKJ_uhwMwnO-HAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Mar 14 - Thu, Mar 19 YUL Montreal HLN Helena CA $791 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:14/03/2026TANYT&leg2=from:HLN,to:YUL,departure:19/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:790.08&airProductToken=AQqmAQo2CMSYARIENTA1NhiYXSDjtAEouMuHAzC5zIcDOEVAAFgBaglNQUlOQkFTSUNyCFZBVVNBMEJRCjUIxJgBEgM5MzUY47QBIPISKK_OhwMwpdCHAzhFQAFYAWoJTUFJTkJBU0lDcghWQVVTQTBCUQo1CMSYARIEMzgzORjyEiDnaii004cDMI7UhwM4RUABWAFqCU1BSU5CQVNJQ3IIVkZXUUEwQlEKpQEKNQjEmAESBDM5MDEY52og8hIosoSIAzCQhYgDOEVAAFgBaglNQUlOQkFTSUNyCFZGV1FBMEJRCjUIxJgBEgQyOTI0GPISIMx8KIuHiAMwoYiIAzhFQAFYAWoJTUFJTkJBU0lDcghUQVVUQTBCUQo1CMSYARIENTQ4ORjMfCCYXSjciogDMPyLiAM4RUABWAFqCU1BSU5CQVNJQ3IIVEFVVEEwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Mar 20 - Wed, Mar 25 YUL Montreal HLN Helena CA $805 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:20/03/2026TANYT&leg2=from:HLN,to:YUL,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:804.52&airProductToken=AQqrAQo_CNWCARIEODcwNhiYXSCIOCjIlIgDMN-WiAM4R0AAWAFqB0VDT05PTVlyCEdOQTVBMFRHegoIwYYBEgQ4NzA2CjMI1YIBEgQxODc0GIg4IINpKJiaiAMwuJuIAzhHQAFYAWoHRUNPTk9NWXIIR05BNUEwVEcKMwjVggESBDUzODgYg2kg52oo2p2IAzDanogDOEdAAVgBagdFQ09OT01ZcghHTkE1QTBURwqqAQozCNWCARIENTkxMRjnaiCDaSiOzIgDMI7NiAM4S0AAWAFqB0VDT05PTVlyCEtBSzJBUURTCjII1YIBEgMzNzcYg2kgrhwo786IAzCE0IgDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwo_CNWCARIEODQ1MhiuHCCYXSi_04gDMLzUiAM4R0ABWAFqB0VDT05PTVlyCEdBQTJBRkRTegoIwYYBEgQ4NDUyEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, Mar 9 - Sat, Mar 14 YUL Montreal HLN Helena CA $807 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:09/03/2026TANYT&leg2=from:HLN,to:YUL,departure:14/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:806.03&airProductToken=AQqhAQo0CMGGARIDNzc3GJhdIIu4ASiVmYcDMIychwM4R0AAWAFqCFNUQU5EQVJEcghHTkE0QTJURwo0CNWCARIEMTMzORiLuAEgg2kosJ-HAzC9oIcDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENTM4OBiDaSDnaij6oYcDMPqihwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCqoBCjMI1YIBEgQ1OTExGOdqIINpKK7QhwMwrtGHAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKMgjVggESAzM3NxiDaSCuHCiP04cDMKTUhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCj8I1YIBEgQ4NDUyGK4cIJhdKN_XhwMw3NiHAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Mar 12 - Tue, Mar 17 YUL Montreal HLN Helena CA $810 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:12/03/2026TANYT&leg2=from:HLN,to:YUL,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:809.71&airProductToken=AQqlAQo1CMSYARIENTQyNxiYXSDMfCi0tYcDMPG2hwM4RUAAWAFqCU1BSU5CQVNJQ3IIWEFWTkEwQlEKNQjEmAESBDI2NTgYzHwg8hIoxbmHAzDwuocDOEVAAVgBaglNQUlOQkFTSUNyCFhBVk5BMEJRCjUIxJgBEgQzODM5GPISIOdqKPS8hwMwzr2HAzhFQAFYAWoJTUFJTkJBU0lDcghYQVZOQTBCUQqlAQo1CMSYARIEMzkwMRjnaiDyEijy7YcDMNDuhwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkZXUUEwQlEKNQjEmAESBDI5MjQY8hIgzHwoy_CHAzDh8YcDOEVAAVgBaglNQUlOQkFTSUNyCFZBVVNBMEJRCjUIxJgBEgQ1NDg5GMx8IJhdKJz0hwMwvPWHAzhFQAFYAWoJTUFJTkJBU0lDcghWQVVTQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $813 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:812.59&airProductToken=AQqqAQo_CNWCARIEODM3MRiYXSCuHCilq4cDMNKshwM4R0AAWAFqB0VDT05PTVlyCEdOQTVBMFRHegoIwYYBEgQ4MzcxCjII1YIBEgMyNzAYrhwgg2ko9a2HAzCkr4cDOEdAAVgBagdFQ09OT01ZcghHTkE1QTBURwozCNWCARIENDcwNRiDaSDnaijusIcDMO2xhwM4R0ABWAFqB0VDT05PTVlyCEdOQTVBMFRHCqoBCjMI1YIBEgQ1OTExGOdqIINpKO7mhwMw7ueHAzhLQABYAWoHRUNPTk9NWXIIS0ZBMkFERE4KMgjVggESAzM3NxiDaSCuHCjP6YcDMOXqhwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCj8I1YIBEgQ4NDUyGK4cIJhdKJ_uhwMwnO-HAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $816 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:815.02&airProductToken=AQqsAQpACMGGARIEMzY1MxiYXSCuHCjYqYcDMIyrhwM4R0AAWAFqCFNUQU5EQVJEcghHTkEyQTdUR3oKCNWCARIEMzY1MwozCNWCARIEMjM0NxiuHCCDaSihrocDMNGvhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCjMI1YIBEgQ0NzA1GINpIOdqKO6whwMw7bGHAzhLQAFYAWoHRUNPTk9NWXIIS0FLMkFRRFMKnwEKMwjVggESBDU5MTEY52ogg2ko7uaHAzDu54cDOEdAAFgBagdFQ09OT01ZcghHTkE1QTBURwozCNWCARIEMTkyNBiDaSCIGCin64cDMO3shwM4R0ABWAFqB0VDT05PTVlyCEdOQTVBMFRHCjMI1YIBEgQzNTM5GIgYIJhdKMnwhwMwxPGHAzhHQAFYAWoHRUNPTk9NWXIIR05BNUEwVEcSCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $831 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:830.50&airProductToken=AQqtAQpACNWCARIEODQ4NxiYXSDEjQEo1aqHAzC2q4cDOEdAAFgBagdFQ09OT01ZcghHTkEyQTJUR3oKCMGGARIEODQ4Nwo0CNWCARIEMjEyMBjEjQEgg2kouK2HAzDLr4cDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENDcwNRiDaSDnaijusIcDMO2xhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCp8BCjMI1YIBEgQ1OTExGOdqIINpKO7mhwMw7ueHAzhHQABYAWoHRUNPTk9NWXIIR05BNUEwVEcKMwjVggESBDE5MjQYg2kgiBgop-uHAzDt7IcDOEdAAVgBagdFQ09OT01ZcghHTkE1QTBURwozCNWCARIEMzUzORiIGCCYXSjJ8IcDMMTxhwM4R0ABWAFqB0VDT05PTVlyCEdOQTVBMFRHEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Fri, Mar 6 - Wed, Mar 11 YUL Montreal HLN Helena CA $833 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:06/03/2026TANYT&leg2=from:HLN,to:YUL,departure:11/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:832.02&airProductToken=AQqhAQo0CMGGARIDNzc3GJhdIIu4ASjx94YDMOj6hgM4R0AAWAFqCFNUQU5EQVJEcghHTkE0QTJURwo0CNWCARIEMTMzORiLuAEgg2kojP6GAzCZ_4YDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENTM4OBiDaSDnaijWgIcDMNaBhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCq0BCjMI1YIBEgQ1OTExGOdqIINpKM6uhwMwzq-HAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKNAjVggESBDI2MTMYg2kgxI0BKI-whwMw7rGHAzhLQAFYAWoHRUNPTk9NWXIIS0FLMkFRRFMKQAjVggESBDg0MTAYxI0BIJhdKK-1hwMwkLaHAzhHQAFYAWoHRUNPTk9NWXIIR05BMkEyVEd6CgjBhgESBDg0MTASCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Mar 12 - Tue, Mar 17 YUL Montreal HLN Helena CA $839 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:12/03/2026TANYT&leg2=from:HLN,to:YUL,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:838.55&airProductToken=AQqmAQo2CMSYARIENTA1NhiYXSDjtAEo-LSHAzD7tYcDOEVAAFgBaglNQUlOQkFTSUNyCFhBVU5BMEJRCjUIxJgBEgM5MzUY47QBIPISKO-3hwMw5bmHAzhFQAFYAWoJTUFJTkJBU0lDcghYQVVOQTBCUQo1CMSYARIEMzgzORjyEiDnaij0vIcDMM69hwM4RUABWAFqCU1BSU5CQVNJQ3IIWEZWR0EwQlEKpwEKNQjEmAESBDM5MDEY52og8hIo8u2HAzDQ7ocDOEVAAFgBaglNQUlOQkFTSUNyCFZGV1FBMEJRCjYIxJgBEgQyMjQ0GPISIOO0ASiK8ocDMNbzhwM4RUABWAFqCU1BSU5CQVNJQ3IIVkFVU0EwQlEKNgjEmAESBDUxMzYY47QBIJhdKLb0hwMwofWHAzhFQAFYAWoJTUFJTkJBU0lDcghWQVVTQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Mar 9 - Sat, Mar 14 YUL Montreal HLN Helena CA $843 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:09/03/2026TANYT&leg2=from:HLN,to:YUL,departure:14/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:842.78&airProductToken=AQqtAQpACNWCARIEODA3ORiYXSCLuAEolZmHAzCMnIcDOEdAAFgBagdFQ09OT01ZcghHTkEyQTJUR3oKCMGGARIEODA3OQo0CNWCARIEMTMzORiLuAEgg2kosJ-HAzC9oIcDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENTM4OBiDaSDnaij6oYcDMPqihwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCqoBCjMI1YIBEgQ1OTExGOdqIINpKK7QhwMwrtGHAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKMgjVggESAzM3NxiDaSCuHCiP04cDMKTUhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCj8I1YIBEgQ4NDUyGK4cIJhdKN_XhwMw3NiHAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Mar 20 - Wed, Mar 25 YUL Montreal HLN Helena CA $847 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:20/03/2026TANYT&leg2=from:HLN,to:YUL,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:846.52&airProductToken=AQqeAQozCNWCARIEMzU5MBiYXSCIGCi7kIgDMMGRiAM4S0AAWAFqB0VDT05PTVlyCEtOQTJBMFRHCjII1YIBEgM0MzEYiBggg2ko5JKIAzDflIgDOEtAAVgBagdFQ09OT01ZcghLTkEyQTBURwozCNWCARIENDcwNRiDaSDnaiiOlogDMI2XiAM4S0ABWAFqB0VDT05PTVlyCEtOQTJBMFRHCqoBCjMI1YIBEgQ1OTExGOdqIINpKI7MiAMwjs2IAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKMgjVggESAzM3NxiDaSCuHCjvzogDMITQiAM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCj8I1YIBEgQ4NDUyGK4cIJhdKL_TiAMwvNSIAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $852 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:851.71&airProductToken=AQqmAQo2CMSYARIENTA1NhiYXSDjtAEo2KmHAzDbqocDOEVAAFgBaglNQUlOQkFTSUNyCFZBVVNBMEJRCjUIxJgBEgM5MzUY47QBIPISKM-shwMwxa6HAzhFQAFYAWoJTUFJTkJBU0lDcghWQVVTQTBCUQo1CMSYARIEMzgzORjyEiDnaijUsYcDMK6yhwM4RUABWAFqCU1BSU5CQVNJQ3IIVkZXUUEwQlEKpQEKNQjEmAESBDM5MDEY52og8hIo0uKHAzCw44cDOEVAAFgBaglNQUlOQkFTSUNyCFRBVU5BMEJRCjUIxJgBEgQyOTI0GPISIMx8KKvlhwMwweaHAzhFQAFYAWoJTUFJTkJBU0lDcghUQVVOQTBCUQo1CMSYARIENTQ4ORjMfCCYXSj86IcDMJzqhwM4RUABWAFqCU1BSU5CQVNJQ3IIVEFVTkEwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 11 - Mon, Mar 16 YUL Montreal HLN Helena CA $855 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:11/03/2026TANYT&leg2=from:HLN,to:YUL,departure:16/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:854.59&airProductToken=AQqrAQo_CNWCARIEODA5NBiYXSCuHCiGrYcDMKuuhwM4S0AAWAFqB0VDT05PTVlyCEtOQTJBMFRHegoIwYYBEgQ4MDk0CjMI1YIBEgQyNjQ5GK4cIINpKPSuhwMwprCHAzhLQAFYAWoHRUNPTk9NWXIIS05BMkEwVEcKMwjVggESBDQ3MDUYg2kg52oo7rCHAzDtsYcDOEtAAVgBagdFQ09OT01ZcghLTkEyQTBURwqqAQozCNWCARIENTkxMRjnaiCDaSju5ocDMO7nhwM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjII1YIBEgMzNzcYg2kgrhwoz-mHAzDl6ocDOEtAAVgBagdFQ09OT01ZcghLRkEyQURETgo_CNWCARIEODQ1MhiuHCCYXSif7ocDMJzvhwM4R0ABWAFqB0VDT05PTVlyCEdBQTJBRkRTegoIwYYBEgQ4NDUyEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 18 - Mon, Mar 23 YUL Montreal HLN Helena CA $856 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:18/03/2026TANYT&leg2=from:HLN,to:YUL,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:855.62&airProductToken=AQqeAQozCNWCARIEMzU5MBiYXSCIGCj7-YcDMIH7hwM4R0AAWAFqB0VDT05PTVlyCEdOQTVBMFRHCjII1YIBEgM0MzEYiBggg2kopPyHAzCf_ocDOEdAAVgBagdFQ09OT01ZcghHTkE1QTBURwozCNWCARIENDcwNRiDaSDnaijO_4cDMM2AiAM4R0ABWAFqB0VDT05PTVlyCEdOQTVBMFRHCqsBCjMI1YIBEgQ1OTExGOdqIINpKM61iAMwzraIAzhHQABYAWoHRUNPTk9NWXIIR05BNUEwVEcKMwjVggESBDE5MjQYg2kgiBgoh7qIAzDNu4gDOEdAAVgBagdFQ09OT01ZcghHTkE1QTBURwo_CNWCARIEODQ1ORiIGCCYXSjjvYgDMMy-iAM4R0ABWAFqB0VDT05PTVlyCEdOQTVBMFRHegoIwYYBEgQ4NDU5EgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, Mar 25 - Mon, Mar 30 YUL Montreal HLN Helena CA $858 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:25/03/2026TANYT&leg2=from:HLN,to:YUL,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:857.02&airProductToken=AQqrAQpACMGGARIEMzY1MxiYXSCuHCiYx4gDMMzIiAM4R0AAWAFqCFNUQU5EQVJEcghHTkEyQTdUR3oKCNWCARIEMzY1MwoyCNWCARIDMjcwGK4cIINpKLXLiAMw5MyIAzhLQAFYAWoHRUNPTk9NWXIIS0FLMkFRRFMKMwjVggESBDQ3MDUYg2kg52oors6IAzCtz4gDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwqfAQozCNWCARIENTkxMRjnaiCDaSiphIkDMKqFiQM4S0AAWAFqB0VDT05PTVlyCEtOQTJBMFRHCjMI1YIBEgQxNDg4GINpIK4cKKyHiQMwyYiJAzhLQAFYAWoHRUNPTk9NWXIIS05BMkEwVEcKMwjVggESBDM1MzYYrhwgmF0o3YuJAzDwjIkDOEtAAVgBagdFQ09OT01ZcghLTkEyQTBURxIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Mar 9 - Sat, Mar 14 YUL Montreal HLN Helena CA $862 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:09/03/2026TANYT&leg2=from:HLN,to:YUL,departure:14/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:861.62&airProductToken=AQqtAQpACNWCARIEODQ4NxiYXSDEjQEolZSHAzD2lIcDOEdAAFgBagdFQ09OT01ZcghHTkEyQTJUR3oKCMGGARIEODQ4Nwo0CNWCARIEMjEyMBjEjQEgg2ko-JaHAzCLmYcDOExAAVgBagdFQ09OT01ZcghMRkE0QURETgozCNWCARIENDcwNRiDaSDnaiiumocDMK2bhwM4TEABWAFqB0VDT05PTVlyCExGQTRBREROCqoBCjMI1YIBEgQ1OTExGOdqIINpKK7QhwMwrtGHAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKMgjVggESAzM3NxiDaSCuHCiP04cDMKTUhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCj8I1YIBEgQ4NDUyGK4cIJhdKN_XhwMw3NiHAzhHQAFYAWoHRUNPTk9NWXIIR0FBMkFGRFN6CgjBhgESBDg0NTISCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Mar 26 - Tue, Mar 31 YUL Montreal HLN Helena CA $867 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:26/03/2026TANYT&leg2=from:HLN,to:YUL,departure:31/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:866.07&airProductToken=AQqoAQo2CNWCARIEMzYwMBiYXSCuHCi40ogDMOzTiAM4TkAAWAFqCjFfYmFzaWNlY29yCEtOQTJBMEJOCjYI1YIBEgQxMDQ5GK4cIINpKJTUiAMwwdWIAzhOQABYAWoKMV9iYXNpY2Vjb3IIS05BMkEwQk4KNgjVggESBDUzODgYg2kg52oo-tWIAzD61ogDOE5AAFgBagoxX2Jhc2ljZWNvcghLTkEyQTBCTgqoAQo2CNWCARIENDY2MBjnaiCDaSjfi4kDMOCMiQM4TkAAWAFqCjFfYmFzaWNlY29yCEtOQTJBMEJOCjYI1YIBEgQyMDg3GINpIIgYKM-NiQMwoo-JAzhOQABYAWoKMV9iYXNpY2Vjb3IIS05BMkEwQk4KNgjVggESBDM2MDIYiBggmF0oj5CJAzCRkYkDOE5AAFgBagoxX2Jhc2ljZWNvcghLTkEyQTBCThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Mar 6 - Wed, Mar 11 YUL Montreal HLN Helena CA $869 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:HLN,departure:06/03/2026TANYT&leg2=from:HLN,to:YUL,departure:11/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:868.77&airProductToken=AQqtAQpACNWCARIEODA3ORiYXSCLuAEo8feGAzDo-oYDOEdAAFgBagdFQ09OT01ZcghHTkEyQTJUR3oKCMGGARIEODA3OQo0CNWCARIEMTMzORiLuAEgg2kojP6GAzCZ_4YDOEtAAVgBagdFQ09OT01ZcghLQUsyQVFEUwozCNWCARIENTM4OBiDaSDnaijWgIcDMNaBhwM4S0ABWAFqB0VDT05PTVlyCEtBSzJBUURTCq0BCjMI1YIBEgQ1OTExGOdqIINpKM6uhwMwzq-HAzhLQABYAWoHRUNPTk9NWXIIS0FLMkFRRFMKNAjVggESBDI2MTMYg2kgxI0BKI-whwMw7rGHAzhLQAFYAWoHRUNPTk9NWXIIS0FLMkFRRFMKQAjVggESBDg0MTAYxI0BIJhdKK-1hwMwkLaHAzhHQAFYAWoHRUNPTk9NWXIIR05BMkEyVEd6CgjBhgESBDg0MTASCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ## Alternative airports near Helena Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:HLN,departure:19/02/2026TANYT&leg2=from:HLN,to:YUL,departure:24/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) HLN Helena Regional CheapestClosest 7 min [Flights from CA $883 ](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:HLN,departure:19/02/2026TANYT&leg2=from:HLN,to:YUL,departure:24/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flight from Montreal to Helena (YUL - HLN) route information__ | Origin airport | Pierre Elliott Trudeau Intl. | | ------------------- | ---------------------------- | | Destination airport | Helena Regional | | Airlines serving | Delta, United | | Roundtrip price | CA $782 | | 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 $783 rising to CA $869\. Here are more money-saving tips: - Fly in March 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)? ### Do I need to pay a cancellation fee if I cancel my flight from YUL to HLN? ### How do I find cheap flights from Montreal Airport to Helena Regional Airport that have flexible change policies? ### How far is the flight from Montreal Airport to HLN? ### Which airlines fly direct from Pierre Elliott Trudeau Intl. Airport (YUL) to Helena Regional Airport? ### Are Montréal–Trudeau to HLN flight tickets cheaper when they're purchased at the last minute? ## Explore a world of travel with Expedia - Flights - [Flights from Walla Walla (ALW) to Butte (BTM) ](https://www.expedia.ca/lp/flights/alw/btm/walla-walla-to-butte) - [Flights from Anchorage (ANC) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/anc/gtf/anchorage-to-great-falls) - [Flights from Atlanta (ATL) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/atl/gtf/atlanta-to-great-falls) - [Flights from Mesa (AZA) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/aza/gtf/mesa-to-great-falls) - [Flights from Barcelona (BCN) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bcn/gtf/barcelona-to-great-falls) - [Flights from Hartford (BDL) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bdl/gtf/hartford-to-great-falls) - [Flights from Bradford (BFD) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bfd/gtf/bradford-to-great-falls) - [Flights from Belfast (BFS) to Butte (BTM) ](https://www.expedia.ca/lp/flights/bfs/btm/belfast-to-butte) - [Flights from Beckley (BKW) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bkw/gtf/beckley-to-great-falls) - [Flights from Bellingham (BLI) to Butte (BTM) ](https://www.expedia.ca/lp/flights/bli/btm/bellingham-to-butte) - [Flights from Bellingham (BLI) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bli/gtf/bellingham-to-great-falls) - [Flights from Nashville (BNA) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bna/gtf/nashville-to-great-falls) - [Flights from Boise (BOI) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/boi/gtf/boise-to-great-falls) - [Flights from Boston (BOS) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bos/gtf/boston-to-great-falls) - [Flights from Butte (BTM) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/btm/gtf/butte-to-great-falls) - [Flights from Baton Rouge (BTR) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/btr/gtf/baton-rouge-to-great-falls) - [Flights from Buenos Aires (BUE) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bue/gtf/buenos-aires-to-great-falls) - [Flights from Buffalo (BUF) to Butte (BTM) ](https://www.expedia.ca/lp/flights/buf/btm/buffalo-to-butte) - [Flights from Buffalo (BUF) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/buf/gtf/buffalo-to-great-falls) - [Flights from Belize City (BZE) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/bze/gtf/belize-city-to-great-falls) - [Flights from Cody (COD) to Butte (BTM) ](https://www.expedia.ca/lp/flights/cod/btm/cody-to-butte) - [Flights from Columbia (COU) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/cou/gtf/columbia-to-great-falls) - [Flights from Cancun (CUN) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/cun/gtf/cancun-to-great-falls) - [Flights from Durango (DRO) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/dro/gtf/durango-to-great-falls) - [Flights from Detroit (DTW) to Butte (BTM) ](https://www.expedia.ca/lp/flights/dtw/btm/detroit-to-butte) - [Flights from El Paso (ELP) to Great Falls (GTF) ](https://www.expedia.ca/lp/flights/elp/gtf/el-paso-to-great-falls) - [Flights from Newark Liberty Intl. 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[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) - 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[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) \*Available to Expedia members.