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Cheap flights from Denver to Ottawa from $140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Ottawa departing on 12/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Denver to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:25 pm - 12:35 pmDEN-YOW
18h 10m1 stop
Multiple Airlines Logo
3:55 pm - 1:23 amYOW-DEN
11h 28m1 stop
$351Multiple Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
Multiple Airlines Logo
4:25 pm - 12:35 pmDEN-YOW
18h 10m1 stop
Multiple Airlines Logo
12:10 pm - 1:23 amYOW-DEN
15h 13m2 stops
$359Multiple Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
Multiple Airlines Logo
12:59 am - 5:25 pmDEN-YOW
14h 26m2 stops
Multiple Airlines Logo
3:55 pm - 1:23 amYOW-DEN
11h 28m1 stop
$361Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Multiple Airlines Logo
12:59 am - 5:25 pmDEN-YOW
14h 26m2 stops
Multiple Airlines Logo
9:30 am - 8:13 pmYOW-DEN
12h 43m1 stop
$377Multiple Airlines
Find Deal
Fri, Dec 12 - Tue, Dec 16
Multiple Airlines Logo
12:59 am - 12:35 pmDEN-YOW
33h 36m2 stops
Multiple Airlines Logo
9:35 am - 9:10 amYOW-DEN
25h 35m1 stop
$384Multiple Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Multiple Airlines Logo
12:59 am - 5:25 pmDEN-YOW
14h 26m2 stops
Multiple Airlines Logo
4:20 pm - 5:11 pmYOW-DEN
26h 51m1 stop
$407Multiple Airlines
Find Deal
Tue, Dec 9 - Wed, Dec 17
Multiple Airlines Logo
9:34 am - 11:58 pmDEN-YOW
12h 24m1 stop
Multiple Airlines Logo
5:40 am - 10:29 pmYOW-DEN
18h 49m2 stops
$412Multiple Airlines
Find Deal
Sun, Dec 7 - Wed, Dec 10
Multiple Airlines Logo
9:34 am - 11:58 pmDEN-YOW
12h 24m1 stop
Multiple Airlines Logo
9:35 am - 9:10 amYOW-DEN
25h 35m1 stop
$417Multiple Airlines
Find Deal
Sun, Dec 7 - Sat, Dec 13
Multiple Airlines Logo
11:15 pm - 5:25 pmDEN-YOW
16h 10m2 stops
Multiple Airlines Logo
3:55 pm - 7:09 pmYOW-DEN
29h 14m1 stop
$420Multiple Airlines
Find Deal
Mon, Dec 1 - Sun, Dec 7
Multiple Airlines Logo
11:59 pm - 4:51 pmDEN-YOW
14h 52m2 stops
Multiple Airlines Logo
9:30 am - 8:13 pmYOW-DEN
12h 43m1 stop
$422Multiple Airlines
Find Deal
Sat, Dec 13 - Tue, Dec 16

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets
United Airlines
Apr 7
DEN5:43 pmDenver Intl
18h 02m
2 stops
YOW1:45 pmOttawa
Apr 9
YOW6:52 amOttawa
13h 32m
2 stops
DEN6:24 pmDenver Intl
$691
Find similar
United Airlines
Dec 10
DEN9:45 amDenver Intl
12h 09m
2 stops
YOW11:54 pmOttawa
Dec 17
YOW6:00 amOttawa
14h 07m
2 stops
DEN6:07 pmDenver Intl
$694
Find similar
United Airlines
Dec 13
DEN9:55 amDenver Intl
11h 59m
2 stops
YOW11:54 pmOttawa
Dec 16
YOW6:20 amOttawa
14h 00m
2 stops
DEN6:20 pmDenver Intl
$729
Find similar

American Airlines flights from Denver to Ottawa

Our best American Airlines deals on Denver to Ottawa flight tickets
American Airlines
Dec 23
DEN6:44 amDenver Intl
15h 57m
2 stops
YOW12:41 amOttawa
Jan 6
YOW6:45 amOttawa
18h 31m
2 stops
DEN11:16 pmDenver Intl
$803
Find similar
American Airlines
Nov 18
DEN12:33 pmDenver Intl
10h 06m
2 stops
YOW12:39 amOttawa
Nov 26
YOW6:45 amOttawa
17h 37m
2 stops
DEN10:22 pmDenver Intl
$1,159
Find similar
American Airlines
Nov 18
DEN11:59 pmDenver Intl
16h 25m
3 stops
YOW6:24 pmOttawa
Nov 26
YOW6:45 amOttawa
12h 19m
2 stops
DEN5:04 pmDenver Intl
$1,283
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Denver to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 12/6

4:25 pm-12:35 pm

1 stop18h 10m

Ottawa

Mon 12/8

3:55 pm-1:23 am

1 stop11h 28m

$351

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 12/6

4:25 pm-12:35 pm

1 stop18h 10m

Ottawa

Mon 12/8

12:10 pm-1:23 am

2 stops15h 13m

$359

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 12/5

12:59 am-5:25 pm

2 stops14h 26m

Ottawa

Mon 12/8

3:55 pm-1:23 am

1 stop11h 28m

$361

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 12/12

12:59 am-5:25 pm

2 stops14h 26m

Ottawa

Tue 12/16

9:30 am-8:13 pm

1 stop12h 43m

$377

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 12/6

12:59 am-12:35 pm

2 stops33h 36m

Ottawa

Sat 12/13

9:35 am-9:10 am

1 stop25h 35m

$384

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 12/9

12:59 am-5:25 pm

2 stops14h 26m

Ottawa

Wed 12/17

4:20 pm-5:11 pm

1 stop26h 51m

$407

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 12/7

9:34 am-11:58 pm

1 stop12h 24m

Ottawa

Wed 12/10

5:40 am-10:29 pm

2 stops18h 49m

$412

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 12/7

9:34 am-11:58 pm

1 stop12h 24m

Ottawa

Sat 12/13

9:35 am-9:10 am

1 stop25h 35m

$417

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 12/1

11:15 pm-5:25 pm

2 stops16h 10m

Ottawa

Sun 12/7

3:55 pm-7:09 pm

1 stop29h 14m

$420

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 12/13

11:59 pm-4:51 pm

2 stops14h 52m

Ottawa

Tue 12/16

9:30 am-8:13 pm

1 stop12h 43m

$422

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Denver to Ottawa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart from Denver to Ottawa is on a Wednesday. Travelers who choose to depart for Ottawa on a Wednesday will often find tickets for as low as $391. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Sunday is $756.

What is the cheapest time of day to depart on your flight to Ottawa?

In the afternoon is the cheapest time of day to fly from Denver to Ottawa when you can find flight prices for as low as $411. Flying to Ottawa in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $579 on average. Flights to Ottawa from Denver at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Denver to Ottawa flight prices changed over time?

When to book flights from Denver to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Ottawa (DEN to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Ottawa

Direct flights

None
There are no direct flights from Denver to Ottawa. There are no popular flight routes from Denver to Ottawa.
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  • How far is Denver Intl to Ottawa by plane?

    Denver Intl and Ottawa are 1530.4 mi apart from one another. By plane, this route typically takes 5h 49m.

  • When did momondo last update prices for flights from Denver Intl Airport to Ottawa Airport?

    Prices for flights from Denver Intl Airport to Ottawa Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to Ottawa Airport?

  • How old do you have to be to fly from Denver Intl Airport to Ottawa Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The travel and health documents required for your trip to Ottawa Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Denver to Ottawa?

Best airlines flying from Denver to Ottawa

Compare and see reviews for airlines that fly from Denver to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom $143Free CancellationRating
7.2
3,161 reviews
Search WestJet flights
Air CanadaPriceFrom $290Free CancellationRating
7.1
10,448 reviews
Search Air Canada flights
United AirlinesPriceFrom $309Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Calabogie
Brockville
Petawawa
Pembroke
Smiths Falls
Perth
Prescott
Winchester
Wakefield

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Ottawa?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ottawa from Denver.

Can I find flights from Denver to Ottawa with flexible booking policies on momondo?

Flights from Denver to Ottawa with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Denver to Ottawa?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ottawa from Denver.

I’m not ready to book a flight from Denver to Ottawa right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Denver to Ottawa flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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