DEN - YOW

$126 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 7/28. 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, Jul 7 - Tue, Jul 15
Air Canada Logo
7:05 pm - 8:19 amDEN-YOW
11h 14m1 stop
Air Canada Logo
6:00 am - 10:21 amYOW-DEN
6h 21m1 stop
$262Air Canada
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Thu, Aug 21 - Mon, Aug 25
WestJet Logo
12:15 pm - 12:41 amDEN-YOW
10h 26m1 stop
WestJet Logo
7:15 pm - 11:27 amYOW-DEN
18h 12m1 stop
$276WestJet
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Mon, Jul 28 - Tue, Aug 12
WestJet Logo
12:15 pm - 12:41 amDEN-YOW
10h 26m1 stop
WestJet Logo
7:15 pm - 11:27 amYOW-DEN
18h 12m1 stop
$282WestJet
Find Deal
Mon, Jul 7 - Wed, Jul 9
Air Canada Logo
7:05 pm - 8:19 amDEN-YOW
11h 14m1 stop
Air Canada Logo
6:00 am - 10:21 amYOW-DEN
6h 21m1 stop
$295Air Canada
Find Deal
Tue, Jul 1 - Fri, Jul 11
United Airlines Logo
6:01 am - 2:13 pmDEN-YOW
6h 12m1 stop
United Airlines Logo
6:33 am - 2:46 pmYOW-DEN
10h 13m1 stop
$310United Airlines
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Mon, Jul 7 - Sat, Jul 12
United Airlines Logo
7:45 am - 5:05 pmDEN-YOW
7h 20m1 stop
United Airlines Logo
6:25 am - 11:28 amYOW-DEN
7h 03m1 stop
$383United Airlines
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Fri, Jul 4 - Fri, Jul 11
Delta Logo
2:00 pm - 12:22 amDEN-YOW
8h 22m2 stops
Delta Logo
5:55 am - 7:53 pmYOW-DEN
15h 58m2 stops
$706Delta
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Fri, Jul 18 - Sat, Jul 26
Delta Logo
6:00 am - 12:22 amDEN-YOW
16h 22m2 stops
Delta Logo
5:55 am - 7:53 pmYOW-DEN
15h 58m2 stops
$729Delta
Find Deal
Fri, Jul 4 - Mon, Jul 14
Lufthansa Logo
5:59 pm - 10:05 pmDEN-YOW
26h 06m2 stops
Lufthansa Logo
6:55 pm - 2:00 pmYOW-DEN
21h 05m1 stop
$11,381Lufthansa
Find Deal
Fri, Jul 4 - Sun, Jul 13
Lufthansa Logo
3:50 pm - 7:05 pmDEN-YOW
25h 15m2 stops
Lufthansa Logo
3:55 pm - 5:35 pmYOW-DEN
27h 40m2 stops
$11,387Lufthansa
Find Deal
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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’s the cheapest day of the week to fly from Denver to Ottawa?

The average price of all round-trip flights from Denver to Ottawa clicked on KAYAK for each day over the last 12 months.

For Denver to Ottawa, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Ottawa back to Denver, the best deals are generally found on Wednesday, with Friday being the most expensive.

Good to know

Low seasonOctober
High seasonSeptember
Cheapest flight$126
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 13% increase in price.
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 $126 for a one-way ticket and $262 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, and SkyTeam are the airline alliances operating flights between Denver and Ottawa, with Star Alliance being the most commonly used for this route.

  • 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 $504 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.

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 8801 reviews
7.0Entertainment
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

10.0 ExcellentAnonymous, Jun 2025DEN - BOS
Read more United Airlines reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

Not only was the flight delayed more than 3 hours but also there was no internet or movies on the flight. It was Flair/Spirit quality of experience at Westjet prices

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

Only issue was checking in took over an hour and was very stressful. It all worked out, but we weren't sure for a while.

We didn’t make the flight due to Delta’s check in line moving too slow.

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic! No entertainment possibilities. Not even a plug-in for phone or IPad if you wanted to watch a downloaded movie. Back to flying Air Canada!

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic!

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

The staff were the friendliest I have encountered in years. Absolutely great!

Plane changed to one with no entertainment system or ability to serve hot meals

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

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.

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

Information on your arrival and departure airports

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