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Cheap flights from Denver to Ottawa from $143

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 11/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Air Canada Logo
11:05 am - 7:16 pmDEN-YOW
6h 11m1 stop
Air Canada Logo
2:50 pm - 7:55 pmYOW-DEN
7h 05m1 stop
$327Air Canada
Find Deal
Tue, Apr 7 - Thu, Apr 9
Multiple Airlines Logo
11:59 pm - 6:55 pmDEN-YOW
16h 56m1 stop
Multiple Airlines Logo
2:50 pm - 7:55 pmYOW-DEN
7h 05m1 stop
$331Multiple Airlines
Find Deal
Mon, Nov 24 - Thu, Nov 27
Air Canada Logo
1:25 pm - 9:18 pmDEN-YOW
5h 53m1 stop
Air Canada Logo
2:50 pm - 7:55 pmYOW-DEN
7h 05m1 stop
$333Air Canada
Find Deal
Wed, Nov 26 - Wed, Dec 3
Multiple Airlines Logo
11:40 pm - 12:41 pmDEN-YOW
11h 01m1 stop
Multiple Airlines Logo
5:15 am - 10:20 amYOW-DEN
7h 05m1 stop
$337Multiple Airlines
Find Deal
Sat, Apr 4 - Sun, Apr 12
United Airlines Logo
4:05 pm - 11:54 pmDEN-YOW
5h 49m1 stop
United Airlines Logo
7:30 pm - 12:15 amYOW-DEN
6h 45m1 stop
$341United Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
United Airlines Logo
11:59 pm - 2:27 pmDEN-YOW
12h 28m1 stop
United Airlines Logo
6:20 am - 6:24 pmYOW-DEN
14h 04m2 stops
$351United Airlines
Find Deal
Mon, Nov 24 - Thu, Nov 27
Delta Logo
10:30 am - 12:42 amDEN-YOW
12h 12m2 stops
Delta Logo
5:40 am - 2:11 pmYOW-DEN
10h 31m2 stops
$457Delta
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Wed, Jan 7 - Sun, Jan 11
Delta Logo
1:30 pm - 12:39 amDEN-YOW
9h 09m2 stops
Delta Logo
5:40 am - 5:37 pmYOW-DEN
13h 57m2 stops
$532Delta
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Tue, Apr 7 - Thu, Apr 9
American Airlines Logo
12:26 pm - 4:49 pmDEN-YOW
26h 23m2 stops
American Airlines Logo
6:45 am - 10:20 pmYOW-DEN
17h 35m3 stops
$688American Airlines
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Wed, Nov 26 - Wed, Dec 3
American Airlines Logo
4:55 pm - 4:51 pmDEN-YOW
21h 56m2 stops
American Airlines Logo
6:45 am - 11:16 pmYOW-DEN
18h 31m2 stops
$709American Airlines
Find Deal
Tue, Dec 23 - Tue, Jan 6

Air Canada flights from Denver to Ottawa

Our best Air Canada deals on Denver to Ottawa flight tickets
Air Canada
Apr 7
DEN11:05 amDenver Intl
6h 11m
1 stop
YOW7:16 pmOttawa
Apr 9
YOW2:50 pmOttawa
7h 05m
1 stop
DEN7:55 pmDenver Intl
$327
Find similar
Air Canada
Nov 26
DEN1:25 pmDenver Intl
5h 53m
1 stop
YOW9:18 pmOttawa
Dec 3
YOW2:50 pmOttawa
7h 05m
1 stop
DEN7:55 pmDenver Intl
$333
Find similar
Air Canada
Nov 7
DEN1:25 pmDenver Intl
7h 43m
1 stop
YOW11:08 pmOttawa
Nov 9
YOW5:00 amOttawa
7h 23m
1 stop
DEN10:23 amDenver Intl
$339
Find similar

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets
United Airlines
Nov 7
DEN4:05 pmDenver Intl
5h 49m
1 stop
YOW11:54 pmOttawa
Nov 9
YOW7:30 pmOttawa
6h 45m
1 stop
DEN12:15 amDenver Intl
$341
Find similar
United Airlines
Nov 24
DEN11:59 pmDenver Intl
12h 28m
1 stop
YOW2:27 pmOttawa
Nov 27
YOW6:20 amOttawa
14h 04m
2 stops
DEN6:24 pmDenver Intl
$351
Find similar
United Airlines
Dec 29
DEN11:59 pmDenver Intl
11h 19m
2 stops
YOW1:18 pmOttawa
Jan 5
YOW12:05 pmOttawa
6h 35m
1 stop
DEN4:40 pmDenver Intl
$424
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 October 14, 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

Tue 4/7

11:05 am-7:16 pm

1 stop6h 11m

Ottawa

Thu 4/9

2:50 pm-7:55 pm

1 stop7h 05m

$327

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 11/24

11:59 pm-6:55 pm

1 stop16h 56m

Ottawa

Thu 11/27

2:50 pm-7:55 pm

1 stop7h 05m

$331

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 11/26

1:25 pm-9:18 pm

1 stop5h 53m

Ottawa

Wed 12/3

2:50 pm-7:55 pm

1 stop7h 05m

$333

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 4/4

11:40 pm-12:41 pm

1 stop11h 01m

Ottawa

Sun 4/12

5:15 am-10:20 am

1 stop7h 05m

$337

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 11/7

4:05 pm-11:54 pm

1 stop5h 49m

Ottawa

Sun 11/9

7:30 pm-12:15 am

1 stop6h 45m

$341

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 11/24

11:59 pm-2:27 pm

1 stop12h 28m

Ottawa

Thu 11/27

6:20 am-6:24 pm

2 stops14h 04m

$351

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 1/7

10:30 am-12:42 am

2 stops12h 12m

Ottawa

Sun 1/11

5:40 am-2:11 pm

2 stops10h 31m

$457

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 4/7

1:30 pm-12:39 am

2 stops9h 09m

Ottawa

Thu 4/9

5:40 am-5:37 pm

2 stops13h 57m

$532

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 11/26

12:26 pm-4:49 pm

2 stops26h 23m

Ottawa

Wed 12/3

6:45 am-10:20 pm

3 stops17h 35m

$688

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 12/23

4:55 pm-4:51 pm

2 stops21h 56m

Ottawa

Tue 1/6

6:45 am-11:16 pm

2 stops18h 31m

$709

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 30m.

  • 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
3,125 reviews
Search WestJet flights
Air CanadaPriceFrom $290Free CancellationRating
7.1
10,297 reviews
Search Air Canada flights
United AirlinesPriceFrom $315Free CancellationRating
7.4
8,976 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
Smiths Falls
Calabogie
Brockville
Petawawa
Pembroke
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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