YOW - DEN

$234 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 1/2. 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 travelers 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 pm - 12:15 amYOW-DEN
6h 45m1 stop
8:50 pm - 10:31 amDEN-YOW
11h 41m1 stop
$286United Airlines
Find Deal
Fri, Dec 6 - Mon, Dec 9
7:30 pm - 12:15 amYOW-DEN
6h 45m1 stop
7:20 pm - 1:23 pmDEN-YOW
16h 03m2 stops
$296United Airlines
Find Deal
Fri, Dec 6 - Mon, Dec 9
6:10 pm - 9:56 amYOW-DEN
41h 46m2 stops
6:00 am - 4:50 pmDEN-YOW
8h 50m1 stop
Sun, Jan 5 - Sun, Jan 12
6:10 pm - 3:54 amYOW-DEN
11h 44m1 stop
10:42 pm - 4:50 pmDEN-YOW
16h 08m1 stop
Sun, Jan 5 - Sun, Jan 12
6:10 am - 10:35 amYOW-DEN
6h 25m1 stop
3:56 pm - 4:57 amDEN-YOW
11h 01m1 stop
$526Air Canada
Find Deal
Wed, Feb 19 - Wed, Feb 26
9:25 am - 7:23 pmYOW-DEN
11h 58m1 stop
7:10 pm - 8:23 amDEN-YOW
11h 13m1 stop
$527Air Canada
Find Deal
Mon, May 5 - Tue, May 13
5:15 pm - 11:27 amYOW-DEN
20h 12m2 stops
12:15 pm - 12:41 amDEN-YOW
10h 26m1 stop
$558WestJet
Find Deal
Tue, May 6 - Tue, May 13
5:15 pm - 11:27 amYOW-DEN
20h 12m2 stops
12:15 pm - 12:22 amDEN-YOW
34h 07m2 stops
$587WestJet
Find Deal
Tue, May 6 - Tue, May 13
5:55 am - 1:58 pmYOW-DEN
10h 03m2 stops
6:05 am - 3:16 pmDEN-YOW
31h 11m2 stops
$626Delta
Find Deal
Fri, Jan 10 - Sun, Jan 12
5:55 am - 5:43 pmYOW-DEN
13h 48m2 stops
12:20 pm - 12:44 amDEN-YOW
34h 24m2 stops
$660Delta
Find Deal
Wed, Feb 19 - Wed, Feb 26

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’s the cheapest day of the week to fly from Ottawa to Denver?

The average price of all flights from Ottawa to Denver clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Denver on a Monday and more expensive on a Wednesday. On your return trip to Ottawa, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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 $338 on average. On the other hand, the most expensive months are May and January, where the average cost of tickets is $627 and $613 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

$234
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 $234 for a one-way ticket and $286 for a round-trip.

  • Do I need a passport to fly between Ottawa and Denver?

    A passport is required to fly from Ottawa to Denver.

  • 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 Air Canada?

    The two airlines most popular with KAYAK users for flights from Ottawa to Denver are United Airlines and Air Canada. With an average price for the route of $479 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $484 and an overall rating of 7.0.

  • 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. Booking your flights between Ottawa and DEN can sometimes prove cheaper using this method.

  • 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 airlines flying 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
8.1Crew
7.1Entertainment
7.3Comfort
6.7Food
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.

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.
1/2Thu
2 stops
20h 39mYOW-DEN
$234
3/5Wed
2 stops
14h 08mYOW-DEN
$244
3/5Wed
1 stopAir Canada
6h 25mYOW-DEN
$288
1/2Thu
1 stopAir Canada
16h 13mYOW-DEN
$328
1/2Thu
3 stops
28h 20mYOW-DEN
$338
12/21Sat
2 stopsDelta
13h 15mYOW-DEN
$622
12/21Sat
1 stopAir Canada
16h 13mYOW-DEN
$748

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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.
11/25Mon
multi-stopUnited Airlines
6h 58mYOW-DEN
12/4Wed
multi-stopUnited Airlines
11h 41mDEN-YOW
$283
11/25Mon
multi-stopUnited Airlines
13h 54mYOW-DEN
12/4Wed
multi-stopUnited Airlines
11h 41mDEN-YOW
$291
11/25Mon
multi-stopUnited Airlines
7h 54mYOW-DEN
12/4Wed
multi-stopUnited Airlines
5h 59mDEN-YOW
$292
11/23Sat
multi-stopAir Canada
11h 09mYOW-DEN
11/29Fri
multi-stopAir Canada
11h 50mDEN-YOW
$324
11/25Mon
multi-stopDelta
13h 42mYOW-DEN
12/4Wed
multi-stopDelta
14h 05mDEN-YOW
$366
11/25Mon
multi-stopDelta
13h 42mYOW-DEN
12/4Wed
multi-stopDelta
15h 05mDEN-YOW
$375
11/25Mon
multi-stopAir Canada
8h 10mYOW-DEN
12/4Wed
multi-stopAir Canada
9h 53mDEN-YOW
$376
11/26Tue
multi-stop
27h 29mYOW-DEN
12/2Mon
multi-stop
28h 02mDEN-YOW
$706
11/26Tue
multi-stop
27h 29mYOW-DEN
12/2Mon
multi-stop
19h 15mDEN-YOW
$829
11/26Tue
multi-stopWestJet
16h 00mYOW-DEN
12/2Mon
multi-stopWestJet
16h 26mDEN-YOW
$1,003

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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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