DEN - YOW

$168 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 3/3. 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
$349
Multiple Airlines
Sat 2/14Fri 2/20
DEN - YOW • 1 stop
Cheapest one-way
$168
Typical prices: $210-$289
Multiple Airlines
Tue 3/3
DEN - YOW • 2 stops
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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

Sat, Feb 14 - Fri, Feb 20
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m
1 stop
Multiple Airlines Logo
4:15 pm - 12:38 pm
YOW
-
DEN
22h 23m
2 stops
$349Multiple Airlines
Sat, Feb 14 - Mon, Feb 16
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m
1 stop
Multiple Airlines Logo
4:15 pm - 1:09 pm
YOW
-
DEN
22h 54m
2 stops
$371Multiple Airlines
Sat, Feb 14 - Sun, Feb 15
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m
1 stop
Multiple Airlines Logo
3:55 pm - 7:28 am
YOW
-
DEN
17h 33m
2 stops
$400Multiple Airlines
Wed, Feb 18 - Sun, Feb 22
Multiple Airlines Logo
6:20 pm - 11:58 pm
DEN
-
YOW
27h 38m
1 stop
Multiple Airlines Logo
3:55 pm - 7:28 am
YOW
-
DEN
17h 33m
2 stops
$402Multiple Airlines
Sat, Feb 14 - Fri, Feb 20
Multiple Airlines Logo
11:59 pm - 7:54 pm
DEN
-
YOW
17h 55m
2 stops
Multiple Airlines Logo
6:50 am - 10:59 pm
YOW
-
DEN
18h 09m
2 stops
$413Multiple Airlines
Sat, Feb 14 - Fri, Feb 20
Multiple Airlines Logo
10:44 am - 12:40 pm
DEN
-
YOW
23h 56m
1 stop
Multiple Airlines Logo
9:25 am - 10:59 pm
YOW
-
DEN
15h 34m
1 stop
$418Multiple Airlines
Mon, Feb 16 - Mon, Feb 23
Multiple Airlines Logo
7:00 pm - 5:25 pm
DEN
-
YOW
20h 25m
2 stops
Multiple Airlines Logo
4:20 pm - 8:20 am
YOW
-
DEN
18h 00m
1 stop
$422Multiple Airlines
Mon, Feb 16 - Mon, Feb 23
Multiple Airlines Logo
10:30 pm - 9:30 pm
DEN
-
YOW
21h 00m
1 stop
Multiple Airlines Logo
4:20 pm - 8:20 am
YOW
-
DEN
18h 00m
1 stop
$452Multiple Airlines
Wed, Feb 18 - Sun, Feb 22
Multiple Airlines Logo
6:20 pm - 11:58 pm
DEN
-
YOW
27h 38m
1 stop
Multiple Airlines Logo
4:20 pm - 10:59 pm
YOW
-
DEN
32h 39m
1 stop
$485Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
6:00 am - 9:30 pm
DEN
-
YOW
13h 30m
1 stop
Multiple Airlines Logo
5:40 am - 4:15 pm
YOW
-
DEN
36h 35m
2 stops
$504Multiple 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 – 51% 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 42m.

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 seasonMay
Cheapest flight$168
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 10% 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 $168 for a one-way ticket and $349 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 $482 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 $309 and an overall rating of 7.2.

  • 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.

Reviews of the 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
United AirlinesOverall score based on 9177 reviews
7.1Entertainment
6.6Food
7.3Comfort
8.1Crew
7.7Boarding
Airline reviews

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

2.0 MediocreSid, Dec 2025
DEN - BZN
Read more United Airlines reviews

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.

Terrible. They wouldn't allow me on my flight on the 14th..

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

The flight was cancelled less than 24 hours before departure. The alternate flight was a day later going from Grenada to Toronto to Vancouver to Calgary to Montreal. 2 days in the air. Not serious, Very bad service

I like the wider seats, Plus lots of legroom, Lacking entertainment, no tv or screen to play with

Liked in-flight wifi Did not like - nothing to complain, really. All good

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

Everything was good except I was a bit disappointed that I had to pay US $150 for bags.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

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.

Terrible experience. Flight was delayed then canceled. They had no clue how to rebook us. Had to wait in line to take to a gate agent for 2 hours. Absolutely terrible from start to finish.

Most expensive flight… and they are trying to pinch more and more money out of you. Baggage, snacks, pillows, headphones… — so many airlines do far better than this… surely a national airline can do better?

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

Information on your arrival and departure airports