$194 Cheap Flights from Ottawa (YOW) to Missoula (MSO)

View $194 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to Missoula Intl. Airport (MSO)

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Cheap Flights from Ottawa to Missoula (YOW-MSO)

Prices were available within the past 7 days and start at $194 for one-way flights and $375 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 22 - Mon, Oct 27
YOW
Ottawa
MSO
Missoula
$375 Roundtrip, found 6 days ago
$375
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Ottawa to Missoula, returning Mon, Oct 27, priced at $375 found 6 days ago
United
Wed, Oct 22 - Fri, Oct 24
YOW
Ottawa
MSO
Missoula
$427 Roundtrip, found 6 days ago
$427
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Ottawa to Missoula, returning Fri, Oct 24, priced at $427 found 6 days ago
United
Tue, Oct 21 - Mon, Oct 27
YOW
Ottawa
MSO
Missoula
$474 Roundtrip, found 6 days ago
$474
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 21 from Ottawa to Missoula, returning Mon, Oct 27, priced at $474 found 6 days ago
United
Tue, Oct 21 - Fri, Oct 24
YOW
Ottawa
MSO
Missoula
$526 Roundtrip, found 6 days ago
$526
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 21 from Ottawa to Missoula, returning Fri, Oct 24, priced at $526 found 6 days ago
United
Sat, Oct 18 - Mon, Oct 27
YOW
Ottawa
MSO
Missoula
$583 Roundtrip, found 6 days ago
$583
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Ottawa to Missoula, returning Mon, Oct 27, priced at $583 found 6 days ago
United
Fri, Oct 17 - Mon, Oct 27
YOW
Ottawa
MSO
Missoula
$599 Roundtrip, found 6 days ago
$599
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 17 from Ottawa to Missoula, returning Mon, Oct 27, priced at $599 found 6 days ago
United
Sat, Oct 18 - Fri, Oct 24
YOW
Ottawa
MSO
Missoula
$635 Roundtrip, found 6 days ago
$635
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Ottawa to Missoula, returning Fri, Oct 24, priced at $635 found 6 days ago
Delta
Fri, Oct 17 - Sun, Oct 26
YOW
Ottawa
MSO
Missoula
$923 Roundtrip, found 6 days ago
$923
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Oct 17 from Ottawa to Missoula, returning Sun, Oct 26, priced at $923 found 6 days ago
Porter Airlines
Mon, Oct 20 - Sun, Oct 26
YOW
Ottawa
MSO
Missoula
$1,068 Roundtrip, found 6 days ago
$1,068
Roundtrip
found 6 days ago
Select Porter Airlines flight, departing Mon, Oct 20 from Ottawa to Missoula, returning Sun, Oct 26, priced at $1,068 found 6 days ago
Air Canada
Mon, Oct 20 - Sun, Oct 26
YOW
Ottawa
MSO
Missoula
$1,090 Roundtrip, found 6 days ago
$1,090
Roundtrip
found 6 days ago
Select Air Canada flight, departing Mon, Oct 20 from Ottawa to Missoula, returning Sun, Oct 26, priced at $1,090 found 6 days ago

Frequently asked questions

How much does a flight from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO) cost?
Lock in a cheap one-way flight from $194 or cheap return flight from $375 from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between YOW and MSO. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from YOW to MSO. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO)?
Nonstop flights from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from YOW to MSO?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO)?
Book a flight from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO) last-minute?
Last-minute bookings from YOW to MSO are usually more expensive. To lock in the best prices, start looking for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to score a cheap fare right before your journey.
Is it cheaper to book a YOW to MSO flight and hotel package?
Compared with arranging hotels and flights separately, booking a YOW to MSO flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our wide range of stays, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Missoula Intl. Airport (MSO)?
In most cases, you can reschedule or cancel your YOW to MSO flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Origin airport
Macdonald-Cartier Intl.
Destination airport
Missoula Intl.
Distance
1824 mi

Book with confidence

Ottawa to Missoula Flights

The cheapest times to fly from Ottawa to Missoula

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ottawa to Missoula are during the month of October. You can find some of the cheapest flights from Ottawa to Missoula with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ottawa to Missoula

Sunday is one of the best days to book for cheap flights from Ottawa to Missoula: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ottawa to Missoula

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ottawa to Missoula in 2025. You can also book with separate airlines for your outbound and return journeys, from $194 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ottawa to Missoula flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ottawa to Missoula airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ottawa to Missoula Flights

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*Available to One Key members.