DEN - YOW

C$ 166 Find Cheap Flights from Denver to Ottawa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Ottawa departing on 31/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Ottawa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Ottawa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Ottawa, as well as popular online travel agencies
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Cheap Flight Deals from Denver to Ottawa (DEN-YOW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Ottawa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Denver to Ottawa

KAYAK's recommended round-trip deals from the most popular airlines that fly from Denver to Ottawa.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
WestJet Logo
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
WestJet Logo
7:15 p.m. - 6:52 p.m.YOW-DEN
25h 37m1 stop
C$ 410WestJet
Find Deal
Tue, 22 Jul - Thu, 31 Jul
WestJet Logo
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
WestJet Logo
5:15 p.m. - 6:52 p.m.YOW-DEN
27h 37m2 stops
C$ 415WestJet
Find Deal
Tue, 22 Jul - Thu, 31 Jul
WestJet Logo
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
WestJet Logo
6:10 a.m. - 11:27 a.m.YOW-DEN
31h 17m2 stops
C$ 421WestJet
Find Deal
Wed, 25 Jun - Thu, 3 Jul
WestJet Logo
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
WestJet Logo
5:55 a.m. - 6:52 p.m.YOW-DEN
14h 57m2 stops
C$ 424WestJet
Find Deal
Wed, 4 Jun - Fri, 18 Jul
 Logo
12:15 p.m. - 12:22 a.m.DEN-YOW
34h 07m2 stops
 Logo
6:50 p.m. - 11:27 a.m.YOW-DEN
18h 37m1 stop
C$ 485
Find Deal
Mon, 9 Jun - Fri, 13 Jun
 Logo
10:47 p.m. - 7:55 p.m.DEN-YOW
19h 08m1 stop
 Logo
6:30 p.m. - 11:27 a.m.YOW-DEN
18h 57m2 stops
C$ 487
Find Deal
Tue, 6 May - Sat, 10 May
United Airlines Logo
7:07 p.m. - 5:29 p.m.DEN-YOW
20h 22m1 stop
United Airlines Logo
6:33 a.m. - 2:46 p.m.YOW-DEN
10h 13m1 stop
C$ 834United Airlines
Find Deal
Thu, 5 Jun - Tue, 29 Jul
United Airlines Logo
8:50 p.m. - 1:09 p.m.DEN-YOW
14h 19m2 stops
United Airlines Logo
10:25 a.m. - 8:38 p.m.YOW-DEN
12h 13m2 stops
C$ 863United Airlines
Find Deal
Thu, 5 Jun - Tue, 29 Jul
Delta Logo
12:55 a.m. - 12:22 a.m.DEN-YOW
21h 27m2 stops
Delta Logo
12:20 p.m. - 10:28 p.m.YOW-DEN
12h 08m2 stops
C$ 940Delta
Find Deal
Mon, 9 Jun - Mon, 28 Jul
Delta Logo
12:55 a.m. - 12:22 a.m.DEN-YOW
21h 27m2 stops
Delta Logo
5:55 a.m. - 5:59 p.m.YOW-DEN
14h 04m2 stops
C$ 982Delta
Find Deal
Mon, 9 Jun - Tue, 29 Jul

KAYAK's insights & trends for Denver to Ottawa flights

Get data-powered insights and trends into flights from Denver to Ottawa to help you find the cheapest flights, the best time to fly and much more.

How far in advance should I book a flight from Denver to Ottawa?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Ottawa, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Denver to Ottawa, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

October

High season

September

Cheapest flight

C$ 166
Best time to beat the crowds (37% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flight from Denver to Ottawa

When to book flights from Denver to Ottawa

Are your dates flexible? Find out the best times to travel from Denver to Ottawa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Ottawa

  • What is the cheapest flight from Denver to Ottawa?

    In the last 3 days, the lowest price for a flight from Denver to Ottawa was C$ 120 for a one-way ticket and C$ 296 for a round-trip.

  • Which aircraft models fly most regularly from Denver to Ottawa?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Ottawa?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Denver and Ottawa, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Denver to Ottawa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Ottawa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Ottawa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ottawa from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Ottawa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ottawa with an airline and back to Denver with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Ottawa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ottawa from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Denver to Ottawa

 
See real verified KAYAK customer reviews for airlines flying from Denver to Ottawa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Ottawa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
Air CanadaOverall score based on 9195 reviews
7.8Crew
7.0Comfort
6.3Food
7.3Boarding
6.8Entertainment
Airline reviews

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

6.0 GoodAnonymous, Apr 2025FLL - YYZ
Read more Air Canada reviews

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

This flight didn't happen for me because of overbooking.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

The boarding was relatively quick, the crew welcoming and flight uneventful. The omission of meals on all airlines is unacceptable especially when the flight is during a mealtime such as this one, (lunchtime), is unacceptable.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

During the pre-departure safety briefing, the flight attendants rushed through the mandatory safety announcements in both official languages, making it difficult for passengers to clearly understand the instructions. Given the importance of these messages for passenger safety, this lack of clarity was concerning. Perhaps use a recoded message to alleviate this concern. Additionally, the flight attendants appeared to lack the professional attentiveness typically expected during a flight. Rather than focusing on timely and courteous service, they seemed more engaged in personal conversations than in addressing the needs of passengers. I hope this feedback is taken constructively and helps in maintaining the high standards of professionalism and care that travelers expect from a national carrier: AC.

No Charging ports for personal electronics, which were required to use wifi entertainment.

Rushed, the boarding was a great deal like a Chinese fire drill.

Everything you need to know for your flight from Denver to Ottawa

Information on your arrival and departure airports

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