DEN - YOW

$174 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 4/25. 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, 0 bags

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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$385
Multiple Airlines
Tue 4/21Tue 4/28
DEN - YOW • 1 stop
Cheapest one-way
$174
Typical prices: $332-$381
Multiple Airlines
Sat 4/25
DEN - YOW • 1 stop
Top airlines
Cheapest • from $692 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Denver and Ottawa. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $324 (round-trip)
Shortest trip • 5h 44m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ottawa!
Flight Deals
Booking Insights
Flight 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

Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m
1 stop
Multiple Airlines Logo
6:55 am - 3:59 am
YOW
-
DEN
23h 04m
2 stops
$385Multiple Airlines
Sat, Mar 28 - Mon, Apr 6
Multiple Airlines Logo
8:00 am - 12:35 pm
DEN
-
YOW
26h 35m
2 stops
Multiple Airlines Logo
9:35 am - 11:08 pm
YOW
-
DEN
15h 33m
1 stop
$418Multiple Airlines
Thu, Apr 2 - Thu, Apr 9
Multiple Airlines Logo
6:00 am - 12:39 am
DEN
-
YOW
40h 39m
2 stops
Multiple Airlines Logo
9:35 am - 11:08 pm
YOW
-
DEN
15h 33m
1 stop
$434Multiple Airlines
Tue, Apr 14 - Wed, Apr 22
Multiple Airlines Logo
10:38 am - 9:30 pm
DEN
-
YOW
8h 52m
1 stop
Multiple Airlines Logo
7:00 am - 10:29 pm
YOW
-
DEN
17h 29m
2 stops
$436Multiple Airlines
Thu, Mar 26 - Mon, Apr 6
Multiple Airlines Logo
6:45 am - 12:25 am
DEN
-
YOW
39h 40m
2 stops
Multiple Airlines Logo
9:35 am - 11:08 pm
YOW
-
DEN
15h 33m
1 stop
$454Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
6:30 am - 9:30 pm
DEN
-
YOW
13h 00m
1 stop
Multiple Airlines Logo
10:00 am - 10:59 pm
YOW
-
DEN
14h 59m
2 stops
$457Multiple Airlines
Thu, Apr 2 - Thu, Apr 9
Multiple Airlines Logo
9:25 am - 11:58 pm
DEN
-
YOW
12h 33m
1 stop
Multiple Airlines Logo
9:35 am - 8:10 am
YOW
-
DEN
24h 35m
1 stop
$469Multiple Airlines
Fri, Apr 10 - Sun, Apr 19
Multiple Airlines Logo
11:59 pm - 11:58 pm
DEN
-
YOW
21h 59m
1 stop
Multiple Airlines Logo
9:30 am - 11:19 pm
YOW
-
DEN
15h 49m
2 stops
$478Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
3:30 pm - 1:15 pm
DEN
-
YOW
19h 45m
2 stops
Multiple Airlines Logo
9:30 am - 8:11 am
YOW
-
DEN
24h 41m
1 stop
$480Multiple Airlines
Sat, Mar 28 - Mon, Apr 6
Multiple Airlines Logo
7:00 am - 12:02 am
DEN
-
YOW
15h 02m
1 stop
Multiple Airlines Logo
9:35 am - 11:08 pm
YOW
-
DEN
15h 33m
1 stop
$482Multiple Airlines
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.

What is the most popular layover airport when flying from Denver to Ottawa?

Percentage of 1-stop round-trip flights from Denver to Ottawa chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Toronto (YYZ) is the top choice – 52% of KAYAK users who clicked on 1-stop flights from Denver to Ottawa picked an itinerary connecting there.

What is the cheapest layover airport when flying from Denver to Ottawa?

Average round-trip price for 1-stop flights from Denver to Ottawa clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Calgary (YYC) offer the most affordable fares, with an average round-trip price of $324.

Which layover airport offers the shortest total travel time from Denver to Ottawa?

Shortest average total travel time for 1-stop one-way flights from Denver to Ottawa via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Montreal (YUL) for the shortest journey. The average one-way travel time for flights connecting there is 5h 44m.

Which layover airport has the quickest connection when flying from Denver to Ottawa?

Average layover duration at different layover airports for 1-stop one-way flights from Denver to Ottawa, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Washington, D.C. (IAD) often has the shortest layovers from Denver to Ottawa, with an average of 1h 03m.

Good to know

Low seasonMarch
Cheapest flight$174
Best time to beat the crowds with an average 71% drop in price.
Most popular time to fly and prices are also 8% 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 $174 for a one-way ticket and $385 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 Air Canada?

    The two airlines most popular with KAYAK users for flights from Denver to Ottawa are United Airlines and Air Canada. With an average price for the route of $482 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 $518 and an overall rating of 7.1.

  • 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.

  • Which airlines provide the cheapest flights from Denver to Ottawa?

    In the past 3 days, the cheapest round-trip tickets from Denver to Ottawa were found on Air Canada ($692) and United Airlines ($723).

Reviews of the top airlines 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.
7.4
United AirlinesOverall score based on 9409 reviews
8.1Crew
7.7Boarding
7.3Comfort
6.6Food
7.1Entertainment
Airline reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

10.0 ExcellentAnonymous, Feb 2026
DEN - RSW
Read more United Airlines reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Flight was good but there are way to many announcements for credit cards etc.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

I travelled in Business class for the first time and wish I could do that again.

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.

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.

Service is pretty good. Sandwiches have to be purchased but I’ve bought my own food. Seat was comfortable and various movies to chose from.

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

Information on your arrival and departure airports