DEN - YOW

C$ 221 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 12/9. 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
1 adult, Economy

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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Flights Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Ottawa

Mon, 25 Aug - Thu, 28 Aug
WestJet Logo
12:15 p.m. - 12:41 a.m.DEN-YOW
10h 26m1 stop
WestJet Logo
7:15 p.m. - 11:27 a.m.YOW-DEN
18h 12m1 stop
C$ 503WestJet
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Air Canada Logo
7:05 p.m. - 8:23 a.m.DEN-YOW
11h 18m1 stop
Air Canada Logo
9:35 a.m. - 7:23 p.m.YOW-DEN
11h 48m1 stop
C$ 514Air Canada
Find Deal
Mon, 25 Aug - Thu, 28 Aug
 Logo
12:15 p.m. - 5:58 a.m.DEN-YOW
15h 43m1 stop
 Logo
5:45 a.m. - 11:27 a.m.YOW-DEN
31h 42m2 stops
C$ 559
Find Deal
Fri, 12 Sep - Fri, 19 Sep
 Logo
12:15 p.m. - 12:40 a.m.DEN-YOW
10h 25m1 stop
 Logo
3:35 p.m. - 4:00 a.m.YOW-DEN
14h 25m2 stops
C$ 560
Find Deal
Mon, 25 Aug - Thu, 28 Aug
WestJet Logo
12:15 p.m. - 5:25 a.m.DEN-YOW
15h 10m2 stops
WestJet Logo
6:10 a.m. - 11:27 a.m.YOW-DEN
31h 17m2 stops
C$ 572WestJet
Find Deal
Thu, 18 Sep - Fri, 26 Sep
WestJet Logo
12:15 p.m. - 12:40 a.m.DEN-YOW
10h 25m1 stop
WestJet Logo
5:15 p.m. - 11:24 a.m.YOW-DEN
44h 09m2 stops
C$ 578WestJet
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Thu, 25 Sep - Mon, 29 Sep
 Logo
12:15 p.m. - 2:53 p.m.DEN-YOW
24h 38m2 stops
 Logo
4:05 p.m. - 1:04 a.m.YOW-DEN
10h 59m1 stop
C$ 585
Find Deal
Thu, 25 Sep - Mon, 29 Sep
United Airlines Logo
11:59 p.m. - 1:04 p.m.DEN-YOW
11h 05m2 stops
United Airlines Logo
5:15 a.m. - 4:35 p.m.YOW-DEN
13h 20m2 stops
C$ 798United Airlines
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Wed, 8 Oct - Wed, 15 Oct
United Airlines Logo
11:59 p.m. - 1:09 p.m.DEN-YOW
11h 10m2 stops
United Airlines Logo
11:55 a.m. - 11:57 p.m.YOW-DEN
14h 02m2 stops
C$ 799United Airlines
Find Deal
Tue, 23 Dec - Tue, 6 Jan
Delta Logo
7:00 a.m. - 12:42 a.m.DEN-YOW
15h 42m2 stops
Delta Logo
5:40 a.m. - 5:37 p.m.YOW-DEN
13h 57m2 stops
C$ 1,982Delta
Find Deal
Booking Insights

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.

Which airlines provide the cheapest flights from Denver to Ottawa?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Denver to Ottawa were found on WestJet (C$ 503) and Air Canada (C$ 514).


Good to know

Low seasonOctober
Cheapest flightC$ 221
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly and prices are also 19% lower 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$ 161 for a one-way ticket and C$ 366 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 Star Alliance 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.

Reviews of the 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.
7.1
Air CanadaOverall score based on 9837 reviews
7.8Crew
6.3Food
7.3Boarding
7.1Comfort
6.8Entertainment
Airline reviews

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

2.0 MediocreAnne, Jul 2025MSP - YYZ
Read more Air Canada reviews

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

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

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.

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

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