---
title: "Ottawa to Helena flights from - Low Price Flights - Expedia.ca"
description: "Looking for low fare flights from Ottawa (YOW) to Helena (HLN)? Compare prices by dates with one-way flights from and roundtrip from ."
canonical: "https://www.expedia.ca/lp/flights/yow/hln/ottawa-to-helena"
language: en-CA
market: CA
currency: CAD
prices_as_of: 2026-11-14T15:33:19Z
---

# Cheap Flights from Ottawa (YOW) to Helena (HLN)
![A cityscape at dusk with illuminated buildings and a prominent cathedral with two spires. Snow-covered mountains are visible in the background.](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

## Popular airlines from Ottawa International Airport (YOW) to Helena, MT (HLN-Helena Regional)

[Air Canada](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}])

[WestJet](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}])

[Flair Airlines](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}])

[American Airlines](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])

[United](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])

[Delta](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])

[Porter Airlines](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:HLN,departure:28/11/2026TANYT&leg2=from:HLN,to:YOW,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}])

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## Book with confidence

### Ottawa to Helena Flights

#### The easy way to book your flights from Ottawa to Helena

With Expedia, it’s simple to find and book flights to Helena from Ottawa whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 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 Ottawa to Helena today, tomorrow, or this week.

#### Save dollars with cheap flights from Macdonald-Cartier Intl., YOW to Helena Regional, HLN

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

Here are more money-saving tips:

- Fly in 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 Ottawa

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 does a flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) cost?

You can find one-way and return flights from YOW to HLN with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when YOW to HLN ticket fares go up or down.

### What is the cheapest month to fly from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

The cheapest months to fly from YOW to HLN are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

### Which airlines fly direct from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

Enter YOW to HLN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

### How do I find cheap flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

To find a cheap flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up [Price Tracking](https://www.expedia.ca/why/price-tracking) and receive alerts when fares go up or down.

### What is the best time to fly from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

### How many flights per day from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

There are approximately 12 connecting flights per day from Ottawa Macdonald-Cartier Intl. (YOW) to Helena Regional (HLN). Some common connection points include O'Hare Intl. (ORD), Pearson Intl. (YYZ), and Washington Dulles Intl. (IAD).

### What is the earliest flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from YOW to HLN. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.

### How long does it take to fly from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

There are no nonstop flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional). Flights with two or more stops typically take around 17 hours 18 minutes, covering a distance of approximately 2786 kilometres. Keep in mind that actual flight times can vary due to factors like layovers, routing, and weather conditions.

### Can you fly business or first class from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

Select the "Business class" and "First class" filters when looking for YOW to HLN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

### How do I earn miles on a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) flight with Expedia?

It's easy to earn miles on a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of [One Key™](https://www.expedia.ca/welcome-one-key), you can also earn OneKeyCash™\* on top of your airline miles when you book with Expedia.

\*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

### Is it cheaper to buy a plane ticket from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) at the last minute?

Typically, booking a last minute flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

### Is it cheaper to book a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) flight and hotel package?

Securing a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) [flight and hotel package](https://www.expedia.ca/helena.d1481.destination-travel-guides) is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

### Can I cancel or change the date of my flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional)?

If you booked your Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Helena, MT (HLN-Helena Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in [your itinerary](https://www.expedia.ca/trips) or confirmation email. Or, head to our [Customer Service portal](https://www.expedia.ca/helpcenter/) if you'd like more information.

## Travel information

| Origin airport      | Ottawa International Airport |
| ------------------- | ---------------------------- |
| Destination airport | Helena, MT                   |
| Distance            | 2,785 km away                |

## Explore a world of travel with Expedia

- [Lodging](?equalTargetTab=tab-0)
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- [Wolf Creek Vacations](https://www.expedia.ca/Wolf-Creek.d6354075.Destination-Travel-Guides)
- [Helena Vacations](https://www.expedia.ca/Helena.d1481.Destination-Travel-Guides)
- [Visit Wolf Creek](https://www.expedia.ca/Wolf-Creek.dx6354075)
- [Cathedral of St. Helena](https://www.expedia.ca/Cathedral-Of-St-Helena-Helena.d6115502.Vacation-Attraction)
- [Visit Helena](https://www.expedia.ca/Helena.dx1481)
- [Rental cars Helena Regional airport](https://www.expedia.ca/Car-Rentals-In-Helena-Regional.d6028339.Car-Rental-Guide)
- [Car rental Helena](https://www.expedia.ca/Car-Rentals-In-Helena.d1481.Car-Rental-Guide)
- [Helena Vacation Rentals](https://www.expedia.ca/Helena-Vacation-Rentals.d1481.Travel-Guide-VacationRentals)
- [Things to do in Helena](https://www.expedia.ca/Things-To-Do-In-Helena.d1481.Travel-Guide-Activities)

\*Available to Expedia members.

## Other language versions

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  en-IN: https://www.expedia.co.in/lp/flights/yow/hln/ottawa-to-helena
  id-ID: https://www.expedia.co.id/lp/flights/yow/hln/ottawa-to-helena
  ar: https://www.expedia.sa/lp/flights/yow/hln/ottawa-to-helena
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