Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

DEN - YOW

$191 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 9/5. 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.
1 adult
0 bags
Fri 7/12
Fri 7/19

Search 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
In the last 7 days travelers have searched 44,148,666 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:20 pm - 12:37 amDEN-YOW
8h 17m1 stop
6:07 am - 1:32 pmYOW-DEN
9h 25m1 stop
$406WestJet
Find Deal
Thu, Sep 5 - Mon, Sep 9
2:20 pm - 12:37 amDEN-YOW
8h 17m1 stop
3:25 pm - 1:32 pmYOW-DEN
24h 07m2 stops
$434WestJet
Find Deal
Thu, Sep 5 - Mon, Sep 9
5:32 pm - 8:33 amDEN-YOW
13h 01m1 stop
9:45 pm - 12:34 pmYOW-DEN
16h 49m1 stop
$477Air Canada
Find Deal
Thu, Aug 1 - Sun, Aug 4
5:32 pm - 9:13 amDEN-YOW
13h 41m1 stop
7:00 pm - 8:42 amYOW-DEN
15h 42m1 stop
$487Air Canada
Find Deal
Thu, Aug 1 - Mon, Aug 5
2:20 pm - 12:39 amDEN-YOW
8h 19m1 stop
6:07 am - 1:32 pmYOW-DEN
9h 25m1 stop
$604WestJet
Find Deal
Thu, Jun 27 - Mon, Aug 5
7:52 am - 8:49 pmDEN-YOW
10h 57m1 stop
8:00 pm - 8:42 amYOW-DEN
14h 42m1 stop
$616Air Canada
Find Deal
Thu, Jun 27 - Mon, Aug 5
2:20 pm - 7:14 pmDEN-YOW
26h 54m1 stop
3:25 pm - 1:32 pmYOW-DEN
24h 07m2 stops
$761WestJet
Find Deal
Thu, Aug 1 - Sun, Aug 4
2:20 pm - 7:14 pmDEN-YOW
26h 54m1 stop
3:25 pm - 1:32 pmYOW-DEN
24h 07m2 stops
$791WestJet
Find Deal
Thu, Aug 1 - Mon, Aug 5
2:20 pm - 6:54 amDEN-YOW
14h 34m1 stop
3:25 pm - 1:32 pmYOW-DEN
24h 07m2 stops
$800WestJet
Find Deal
Thu, Jun 27 - Mon, Aug 5

Flights from Denver to Ottawa - Travel Insights & Trends

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.

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

The average price of all flights from Denver to Ottawa clicked on KAYAK for each day over the last 12 months.
For Denver to Ottawa, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from Ottawa back to Denver, the best deals are generally found on Sunday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Denver to Ottawa, 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 Denver to Ottawa is February, where tickets cost $503 on average. On the other hand, the most expensive months are April and March, where the average cost of tickets is $1,483 and $1,084 respectively.

Good to know

Low season

March

High season

July

Cheapest flight

$191
Best time to beat the crowds but there is an average 40% increase in price.
Most popular time to fly and prices are also 15% 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 $191 for a one-way ticket and $406 for a round-trip.

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

    Yes

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

    On your way to Ottawa, you’ll fly out from Denver Intl. You’ll be landing at Ottawa.

  • 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 is the only airline alliance operating flights between Denver and Ottawa.

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

    The two airlines most popular with KAYAK users for flights from Denver to Ottawa are United Airlines and WestJet. With an average price for the route of $753 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 $564 and an overall rating of 7.4.

  • 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. Booking your flights between Denver and YOW 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 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 3 airlines serving 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.
7.4
WestJetOverall score based on 2838 reviews
7.6Boarding
7.3Comfort
6.4Entertainment
6.4Food
8.1Crew
Airline reviews

It was okay overall, but it was a 4 hours flight and the only thing we got was snacks, I really expected breakfast.

8.0 ExcellentAmira, May 2024YYC - YOW
Read more about WestJet reviews

It was okay overall, but it was a 4 hours flight and the only thing we got was snacks, I really expected breakfast.

Keep better track of bags. Not sure how they got lost. Also not sure why it took two weeks for us to get them back. Had to buy a bunch of necessities because they were packed.

food worker strike caused lack of service. I know, not your fault but a bit of a inconvenience.

The staff on the WestJet flight were friendly and helpful. The flight was smooth and we arrived 30 minutes ahead of time.

not as spartan as an air Canada flight, less comfortable / no in-flight screen as compared to similar priced Air Transat flight. Crew Cabin were professional and approachable. They got the job done, safe flight, on time despite delay in take off.

There was no entertainment and no announcement till well after I and others asked about it, and no "compensation" (like a free snack)

4 hour delay, lost our bags, staff was loud and it was an overnight flight

Entertainment was the only issue. I did not have app & not equipped to watch movie on my phone. Used to other carriers with access to a screen for viewing. Other than that, everything was fine.

Great flight. Pilot was able to fully make up the 42 minute late arrival of the aircraft for an on time arrival in Toronto.

Westjet delayed then rebooked us on flights for economy class when we paid for business class and now need a refund for fare difference and they aren't getting back to us

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Not worth the premium paid for the first class ticket

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Fine. Though no food or entertainment so the survey needs to be updated with those options.

This was a flight operated by Lufthansa. See me prior comments, which were meant for this experience. The CSA, Ashley, should be reprimanded if not fired for incompetence, being rude, and very, very slow. She was whispering to other CSAs, blaming my flight change on others, unable to give me a seat assignment, telling me could not help without offering any advice (I travel 200,000 miles a year and am a consultant to the airlines, so I know how this gets done PRETTY DAMN WELL). Then, she gave me literally the worst seat on the airline (yes, there were other seats open) - the one right next to the bathroom that was so bad the other PAX next to me left to move to another seat. My seat kept getting rammed (3x) by the crew with their carts (no turbulence to speak of), other passengers grabbing the seat to get in or out of the bathroom, and listening to the bathroom flush all night.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

Good dinner and nice plane.Smootz flight. Breakfast had no sweet option. Seats hardly reclined.

Too many fees (but that seems to apply to all airlines nowadays)

There was a mistake with the first name we only discovered at security. Air canada was unable to correct it to match then passport since it was booked through an agency. The agency could not correct it either since they need at least two hours to do that. We could not fly and lost a bunch of money. Learned my lesson about kayak.

My flight got canceled. Then AC rebooked me to a next day flight. No compensation no apology. It almost messed up my entire trip and schedule. However, all the unexpepected seems routine and ordinary to AC, so customers need to get used to.

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

Did not appreciate “hidden fees” to check a bag for international flight and purchase a seat to be next to my spouse. Won’t choose this airline again.

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

The original flight from Boston to Toronto was canceled because of a mechanical failure. I was then scheduled on a flight to go from Boston to Montreal and then Montreal to Toronto. The flight was extremely full and I had to check my carry-on bag. When I actually got on the plane there appeared to be room for my bag. I understand the mechanical failures happen. But it was frustrating that they pestered me to check my bag when I don't believe it was necessary. Additionally, not just with Air Canada, modern airline seats are incredibly uncomfortable. There is considerable research that shows that the shape of them is poor for back health.

Unable to initiate refund/reschedule the ticket #worst experience #lost 900$

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

This was a red eye return, so I doubt there would be anyway to make it better. Other than adding beds.

Direct nonstop flight was great. Flight was delayed and the crew announced a 2h delay on the sound system. 30 min or so later I hear my name on the sound system for immediate board. Several other passangers were late too. Reason: The crew incorrectly announced a 2h delay when in reality they meant a new boarding time at 2pm.

Book cheap flights from Denver to Ottawa

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Denver to Ottawa found on KAYAK in the last 72 hours.
9/5Thu
1 stopUnited Airlines
15h 06mDEN-YOW
$191
7/26Fri
1 stopUnited Airlines
16h 56mDEN-YOW
$195
9/5Thu
2 stopsUnited Airlines
15h 03mDEN-YOW
$196
9/5Thu
3 stops
15h 58mDEN-YOW
$217
9/4Wed
1 stop
14h 23mDEN-YOW
$227
7/26Fri
2 stops
21h 10mDEN-YOW
$308
7/26Fri
3 stops
25h 23mDEN-YOW
$314

Search by stops

Search by airline

Search by price

Last minute flights from Denver to Ottawa

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 Denver to Ottawa that are departing in the next 10 days.
6/14Fri
multi-stop
28h 38mDEN-YOW
6/17Mon
multi-stop
27h 01mYOW-DEN
$481
6/14Fri
multi-stop
28h 38mDEN-YOW
6/17Mon
multi-stop
18h 59mYOW-DEN
$562
6/13Thu
multi-stop
14h 39mDEN-YOW
6/17Mon
multi-stop
27h 01mYOW-DEN
$674
6/14Fri
multi-stopUnited Airlines
15h 02mDEN-YOW
6/17Mon
multi-stopUnited Airlines
14h 58mYOW-DEN
$693
6/13Thu
multi-stop
14h 39mDEN-YOW
6/17Mon
multi-stop
18h 59mYOW-DEN
$755
6/14Fri
multi-stop
21h 42mDEN-YOW
6/17Mon
multi-stop
32h 42mYOW-DEN
$883

Search by stops

Search by airline

Search by price

Denver - Ottawa Flights

Departure:

Denver (DEN)United States

Destination:

Ottawa (YOW)Canada

Return flight deals:

Ottawa - Denver

Cabin classes:

Browse destinations: