YOW - DEN

C$ 321 Find cheap flights from Ottawa to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Denver departing on 1/12. 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.
1 adult
0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Denver, 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 Ottawa to Denver, as well as popular online travel agencies
In the last 7 days, travellers have searched 46,646,933 times on KAYAK, and here is why:

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Cheap flight deals from Ottawa to Denver (YOW-DEN)

 
These are the cheapest deals for flights from Ottawa to Denver currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 Ottawa to Denver

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ottawa to Denver.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:30 p.m. - 12:15 a.m.YOW-DEN
6h 45m1 stop
8:50 p.m. - 10:31 a.m.DEN-YOW
11h 41m1 stop
C$ 400United Airlines
Find Deal
Fri, 6 Dec - Mon, 9 Dec
5:50 p.m. - 11:46 p.m.YOW-DEN
7h 56m1 stop
7:20 p.m. - 10:31 a.m.DEN-YOW
13h 11m1 stop
C$ 408United Airlines
Find Deal
Sat, 14 Dec - Mon, 16 Dec
6:10 p.m. - 9:56 a.m.YOW-DEN
41h 46m2 stops
6:00 a.m. - 4:50 p.m.DEN-YOW
8h 50m1 stop
C$ 478
Find Deal
Sun, 5 Jan - Sun, 12 Jan
6:10 p.m. - 3:54 a.m.YOW-DEN
11h 44m1 stop
10:42 p.m. - 4:50 p.m.DEN-YOW
16h 08m1 stop
C$ 479
Find Deal
Sun, 5 Jan - Sun, 12 Jan
6:10 a.m. - 10:35 a.m.YOW-DEN
6h 25m1 stop
3:56 p.m. - 4:57 a.m.DEN-YOW
11h 01m1 stop
C$ 735Air Canada
Find Deal
Wed, 19 Feb - Wed, 26 Feb
9:25 a.m. - 7:23 p.m.YOW-DEN
11h 58m1 stop
7:10 p.m. - 8:23 a.m.DEN-YOW
11h 13m1 stop
C$ 737Air Canada
Find Deal
Mon, 5 May - Tue, 13 May
5:15 p.m. - 11:27 a.m.YOW-DEN
20h 12m2 stops
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
C$ 780WestJet
Find Deal
Tue, 6 May - Tue, 13 May
5:15 p.m. - 11:27 a.m.YOW-DEN
20h 12m2 stops
12:15 p.m. - 12:22 a.m.DEN-YOW
34h 07m2 stops
C$ 820WestJet
Find Deal
Tue, 6 May - Tue, 13 May
5:55 a.m. - 1:58 p.m.YOW-DEN
10h 03m2 stops
6:05 a.m. - 3:16 p.m.DEN-YOW
31h 11m2 stops
C$ 875Delta
Find Deal
Fri, 10 Jan - Sun, 12 Jan
5:55 a.m. - 5:43 p.m.YOW-DEN
13h 48m2 stops
6:45 p.m. - 12:44 a.m.DEN-YOW
27h 59m2 stops
C$ 922Delta
Find Deal
Wed, 19 Feb - Wed, 26 Feb

Flights from Ottawa to Denver - Travel Insights & Trends

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

What is the cheapest month to fly from Ottawa to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ottawa to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ottawa to Denver is November, where tickets cost C$ 472 on average. On the other hand, the most expensive months are May and January, where the average cost of tickets is C$ 876 and C$ 857 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ottawa to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ottawa to Denver, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 45 days before departure.

Good to know

Low season

April

High season

September

Cheapest flight

C$ 321
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Ottawa to Denver

When to book flights from Ottawa to Denver

Are your dates flexible? Find out the best times to travel from Ottawa to Denver 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 Ottawa to Denver

  • What is the cheapest flight from Ottawa to Denver?

    In the last 3 days, the lowest price for a flight from Ottawa to Denver was C$ 230 for a one-way ticket and C$ 286 for a round-trip.

  • Which airports will I be using when flying from Ottawa to Denver?

    When flying out of Ottawa you will be using Ottawa. You will be landing at Denver, also known as Denver Intl.

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

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

  • Which airline alliances offer flights from Ottawa to Denver?

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

  • Which is the best airline for flights from Ottawa to Denver, United Airlines or WestJet?

    The two airlines most popular with KAYAK users for flights from Ottawa to Denver are United Airlines and WestJet. With an average price for the route of C$ 762 and an overall rating of 7.4, United Airlines is the most popular choice. WestJet is also a great choice for the route, with an average price of C$ 643 and an overall rating of 7.3.

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

    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 Ottawa to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Ottawa 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 Ottawa to Denver?

    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 Denver with an airline and back to Ottawa with another airline.

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

    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 Denver from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Ottawa to Denver

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Denver. 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 Ottawa to Denver? 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.
7.4
United AirlinesOverall score based on 9172 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
6.7Food
8.1Crew
Airline reviews

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

10.0 ExcellentJason, Nov 2024MSO - DEN
Read more United Airlines reviews

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

I was at the back of the plane with earphones, and I could still hear the chatty flight attendants; I wasn't able to sleep at all.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

United airlines was top for my last trip in every way

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Horrible; seating was atrocious - inadequate leg room and seat width tight even for a small individual. Profits shouldn’t be everything!

Liked that we left on time for each flight. Snacks not the best, but we're okay.

It was fine. The flight attendant appeared to be in a bad mood but everything was fine.

flight was delayed and stewards were preoccupied and not helping passengers. The pilot was very communicative which was great. The window was dirty as were the back of the front seats with chewed gum and slime on it. I hope this helps.

Traveling on two legs the food was identical and not very good

The flight was on time and shorter time arrival than planned. I was an ultra basic passenger and understood one personal item on the plane. The announcements of one personal item and zone 9 boarding certainly felt like we were separated from the rest. Actually zone 9 passengers should be boarded second; we are not blocking aisles and can be seated much faster and deboarded faster too.

Still sitting in a hotel when I'm due for work

Delays happen but communication and care were very low on what ended up being a long day.

Never been on a long haul flight that didn't have on flight entertainment. I hope the way back is better !

Very easy boarding. The on board snacks were not good.

They canceled the flight with no reason given they should not be in business

We had a 44 minute layover ( ??? ) to change planes for our flight to SRQ. We landed at Concourse D, and the SRQ plane was located at Concourse B, as we were told in Toronto. We got to "B4" as directed by ( Delta Help ), in less than 10 minutes, only to see the flight we booked to leave at 2:28, was showing "DEPARTED". Back to Delta Help, got an extremely obnoxious and rude clerk who gave use two options, next flight leaving 5:20, on "B12", (STANDBY). or (CONFIRMED), leaving around 8:PM, not sure of the exact time because they took our seat request and gave us another boarding pass minus the exact time. We had been waiting hours for the 5:20 flight and at the very last minute a group appeared and were allowed to board. When the "standby" folks were summoned, several were allowed to board ahead of us, even though we were there much earlier. The clerk, who gave his name as Markus, a black man with a beard, was the most arrogant. rude and condescending individual in existence. When I asked him to repeat his name he said "what did it sound like?". Had I been thinking I would have answered to me it sounded like (markasshole) which is exactly what he was. When we originally got to that gate and asked for advice, he went on and on telling me he could only comment on the flight that was in progress, that ATL was a big airport, and treated us, both, in our 80"s like we were children unable to understand the process, and directly in my face in a loud voice, shouted exactly what we were already aware of. Not one ounce of consideration for our problem, of just trying to get home. When he called out the names of the remaining "standby" people, he left several go before us, even though we were there waiting hours earlier. He called out our names, John and Nubia, looked at us and shouted out that he only had ONE, and with a grin on his face, let another standby board, and told that person that she got the "lucky" last seat, still grinning, meaning we had to wait once again for the later flight. This obviously prejudiced and biased poor excuse of human beings needs to find a job he is better suited for, perhaps dog catcher or janitor, IMHO. This entire fiasco put us home more than 7 hours later than previously indicated on our original and paid for flight schedule. If Kayak continues to offer flights with different concourse locations and with only a 44 minute layover, they might also consider a more reasonable and reliable time frame for layover. It was a horrible experience and considering alternatives to this service is paramount.

Plane was tooo small, making cracking sound felt lime its breaking down. No tv, wifi doesn’t work. Only 2 restroom

I was very good. Service was great. Seating selection was not too good.

Very good. But seat selection was not good. We were put on different rows. Would have been nicer to sit besides each other as a couple.

5-hour trip with just water and one cookie is not great: fruits and cheese,, salads, protein smoothie... It could be small but nourrishing No screen and no outlet to connect our electronic devices. If there were ,It would have been nice to be informed. Every instruction given in french by the agent on the plane was pronounced so quickly that despite french is my 1st language, I could not understand the instructions. Too fast, no intonation, no space between words. Most of the time, the english versions (my 2nd language) were fast but with breathing between words, good intonation and the information was much easier to understand.

The Flight Attendant was particularly helpful to my wife, who was having a bad day.

The crew was excellent, taking off and landing was great, but the seats weren't comfortable and we didn't have any good food.

Delays, cancelled, re-booked, cancelled, re-booked. Arrived too late to do pre-paid tour. So tired went to bed early

I fly all the time for work & am used to seeing "XYZ flight facilitated by XYZ airlines" (or similar) and it's never been an issue. This flight from Edmonton to DFW through Denver was very early - 6 am, international, so at the airport by 3am. The flight was booked on Kayak through Air Canada and the actual flight was supposed to be on United. I didn't receive anything from Air Canada prior to the flight, other than to check in via United app when I tried to find my flight on Air Canada app. The day of, we were all on the plane at 5:45 am, when the pilot came out to let us know that the engine had been leaking for some time, and we were now going to have to deplane and wait for the mechanic to arrive and evaluate. So, we did. Why the flight wasn't cancelled at that point I don't know. After about an hour, sure enough - cancelled, however at that point, it's late already to try and get onto a flight out of Edmonton (YEG) on a weekend, esp. since post-COVID it doesn't seem that YEG has fully recovered in terms of flights and airline availability. Trying to get back to DFW took me the rest of the weekend from Sat am at 6 to Sunday pm - late, included renting a car on my own dime and driving to Calgary (YYC) which has more flight availability, as well as another night's hotel also on my own dime. I found some help on the United app - the chat personnel did try to help find some way home. When I called Air Canada after I couldn't get a flight through United - they were quite rude and short on the phone, letting me know that it was my problem (and United's) not theirs. Since Air Canada booked the ticket and took my money I would expect that if nothing else they would try to be of some help. I am so disappointed in Air Canada and their customer service, btw - my follow-up email to them for some type of resolution or acknowledgement was acknowledged by the system as having been received but as of this point - 5 days later - no response.

Flight was cancelled 2 hours before we needed to leave. Spent 1.5 hours on hold trying to speak to an agent. Was given the option of travelling to Montreal and flying out of that airport rather than adding a full extra day to the trip. In flight entertainment did not work during the Montreal flight. "Snack" consisted of a single cookie. I would rather not book with Air Canada in the future. It's frustrating to not have choices as a consumer.

Constant delays worked out in our favor but definitely extended our travel day

The crew and the flight was excellent. Captain kept us informed about weather and possibly of turbulence and I appreciated that! The only thing is they didn’t have tv monitors. Other than that, everything was great.

Book cheap flights from Ottawa to Denver

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ottawa to Denver found on KAYAK in the last 72 hours.
1/12Sun
3 stops
42h 04mYOW-DEN
C$ 321
1/12Sun
2 stops
40h 09mYOW-DEN
C$ 327
5/3Wed
2 stops
14h 08mYOW-DEN
C$ 341
5/3Wed
1 stopAir Canada
6h 25mYOW-DEN
C$ 403
2/1Thu
1 stopAir Canada
16h 13mYOW-DEN
C$ 458
2/1Thu
3 stops
28h 20mYOW-DEN
C$ 472
1/12Sun
1 stop
24h 26mYOW-DEN
C$ 600
21/12Sat
2 stopsDelta
13h 15mYOW-DEN
C$ 869
21/12Sat
1 stopAir Canada
16h 13mYOW-DEN
C$ 1,045

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Last minute flights from Ottawa to Denver

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ottawa to Denver that are departing in the next 10 days.
25/11Mon
multi-stopUnited Airlines
6h 58mYOW-DEN
4/12Wed
multi-stopUnited Airlines
15h 54mDEN-YOW
C$ 396
25/11Mon
multi-stopUnited Airlines
12h 40mYOW-DEN
4/12Wed
multi-stopUnited Airlines
11h 41mDEN-YOW
C$ 407
25/11Mon
multi-stopUnited Airlines
8h 23mYOW-DEN
4/12Wed
multi-stopUnited Airlines
11h 41mDEN-YOW
C$ 408
23/11Sat
multi-stopAir Canada
11h 09mYOW-DEN
29/11Fri
multi-stopAir Canada
11h 50mDEN-YOW
C$ 453
25/11Mon
multi-stopAir Canada
10h 20mYOW-DEN
4/12Wed
multi-stopAir Canada
11h 39mDEN-YOW
C$ 499
25/11Mon
multi-stopDelta
13h 42mYOW-DEN
4/12Wed
multi-stopDelta
14h 05mDEN-YOW
C$ 512
25/11Mon
multi-stopDelta
13h 42mYOW-DEN
4/12Wed
multi-stopDelta
15h 05mDEN-YOW
C$ 524
25/11Mon
multi-stop
17h 20mYOW-DEN
3/12Tue
multi-stop
14h 34mDEN-YOW
C$ 783
25/11Mon
multi-stop
12h 30mYOW-DEN
3/12Tue
multi-stop
14h 34mDEN-YOW
C$ 941
26/11Tue
multi-stopWestJet
16h 00mYOW-DEN
2/12Mon
multi-stopWestJet
16h 26mDEN-YOW
C$ 1,402

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

Information on your arrival and departure airports

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