$156 Cheap Flights from Denver (DEN) to Ottawa (YOW)

View $156 flight on Tue, Jul 22, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Ottawa International Airport (YOW)

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Cheap Flights from Denver to Ottawa (DEN-YOW)

Prices were available within the past 7 days and start at $156 for one-way flights and $335 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

WestJet
Tue, Aug 5 - Wed, Aug 13
DEN
Denver
YOW
Ottawa
$335 Roundtrip, just found
$335
Roundtrip
just found
Select WestJet flight, departing Tue, Aug 5 from Denver to Ottawa, returning Wed, Aug 13, priced at $335 just found
United
Tue, Aug 5 - Wed, Aug 13
DEN
Denver
YOW
Ottawa
$338 Roundtrip, just found
$338
Roundtrip
just found
Select United flight, departing Tue, Aug 5 from Denver to Ottawa, returning Wed, Aug 13, priced at $338 just found
United
Sat, Aug 9 - Thu, Aug 14
DEN
Denver
YOW
Ottawa
$338 Roundtrip, found 5 days ago
$338
Roundtrip
found 5 days ago
Select United flight, departing Sat, Aug 9 from Denver to Ottawa, returning Thu, Aug 14, priced at $338 found 5 days ago
United
Tue, Aug 5 - Wed, Aug 13
DEN
Denver
YOW
Ottawa
$340 Roundtrip, just found
$340
Roundtrip
just found
Select United flight, departing Tue, Aug 5 from Denver to Ottawa, returning Wed, Aug 13, priced at $340 just found
WestJet
Tue, Aug 12 - Sun, Aug 17
DEN
Denver
YOW
Ottawa
$341 Roundtrip, found 4 days ago
$341
Roundtrip
found 4 days ago
Select WestJet flight, departing Tue, Aug 12 from Denver to Ottawa, returning Sun, Aug 17, priced at $341 found 4 days ago
WestJet
Sun, Aug 3 - Thu, Aug 7
DEN
Denver
YOW
Ottawa
$342 Roundtrip, found 22 hours ago
$342
Roundtrip
found 22 hours ago
Select WestJet flight, departing Sun, Aug 3 from Denver to Ottawa, returning Thu, Aug 7, priced at $342 found 22 hours ago
Air Canada
Tue, Jul 15 - Wed, Jul 16
DEN
Denver
YOW
Ottawa
$343 Roundtrip, found 6 days ago
$343
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Jul 15 from Denver to Ottawa, returning Wed, Jul 16, priced at $343 found 6 days ago
Air Canada
Thu, Aug 14 - Mon, Aug 18
DEN
Denver
YOW
Ottawa
$344 Roundtrip, found 3 days ago
$344
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Aug 14 from Denver to Ottawa, returning Mon, Aug 18, priced at $344 found 3 days ago
WestJet
Tue, Jul 22 - Tue, Jul 29
DEN
Denver
YOW
Ottawa
$345 Roundtrip, just found
$345
Roundtrip
just found
Select WestJet flight, departing Tue, Jul 22 from Denver to Ottawa, returning Tue, Jul 29, priced at $345 just found
Air Canada
Wed, Aug 6 - Tue, Aug 12
DEN
Denver
YOW
Ottawa
$348 Roundtrip, found 6 days ago
$348
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Aug 6 from Denver to Ottawa, returning Tue, Aug 12, priced at $348 found 6 days ago

Find the cheapest month to fly from Denver (DEN) to Ottawa (YOW)

September is typically the cheapest month to fly

From $235 - $823 per traveler.

Graph displaying average flight prices per month

Alternative airports near Ottawa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Macdonald-Cartier Intl. YOW. Cheapest option available. Average driving time to city center is 15 minutes. Flights from $345
YOW
Macdonald-Cartier Intl.
Cheapest
Average driving time to city center15 min
Flights from $345
Flights from Denver (DEN) to Ottawa (YOW)
Origin airport
Denver Intl.
Destination airport
Macdonald-Cartier Intl.
Airlines serving
Air Canada, United, WestJet
Roundtrip price
$335
Distance
1514 mi

Denver to Ottawa Flights

The cheapest times to fly from Denver to Ottawa

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 Denver to Ottawa are during the month of August. You can find some of the cheapest flights from Denver to Ottawa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Ottawa

Sunday is one of the best days to book for cheap flights from Denver to Ottawa: 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 Denver to Ottawa

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 Denver to Ottawa in 2025. You can also book with separate airlines for your outbound and return journeys, from $156 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 Denver to Ottawa 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 Denver to Ottawa 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.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW) cost?
Discover the latest flight deals from DEN to YOW by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DEN to YOW?
The cheapest flights from DEN to YOW are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DEN to YOW?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DEN to YOW. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW)?
You'll have to book a flight with a layover when traveling from Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from DEN to YOW?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the time of year, airline 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 Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW)?
To avoid possible delays on the Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being 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 Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW) last-minute?
Last-minute bookings from DEN to YOW are usually more expensive. For the best rates, start searching for flights well in advance. That being said, if you're flexible with your travel plans, you may land a cheap fare right before you leave.
Is it cheaper to book a DEN to YOW flight and hotel package?
Compared with arranging hotels and flights separately, booking a DEN to YOW flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Macdonald-Cartier Intl. Airport (YOW)?
If you reserved your DEN to YOW flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.