What airlines fly to Ottawa?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Ottawa from Denver according to our data. Air Canada is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Ottawa. Keep in mind that there are 3 different airlines that fly to Ottawa on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Denver Intl to Ottawa?

United Airlines is the most popular carrier operating from Denver Intl to Ottawa

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?

The number of operators available for flights from Denver Intl Airport to Ottawa Airport is 2 as of October 2026.

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.

$254 Cheap Flights from Denver to Ottawa in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Ottawa

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 12:41 amDEN Denver Intl-YOW Ottawa

15h 31m3 stops Dallas/Fort Worth Tampa Toronto Pearson Intl

3:15 pm - 6:29 amYOW Ottawa-DEN Denver Intl

17h 14m2 stops Newark Atlanta Hartsfield-Jackson

$444Multiple Airlines

Fri, Dec 4 - Fri, Dec 11

9:04 am - 12:41 amDEN Denver Intl-YOW Ottawa

13h 37m2 stops Tampa Toronto Pearson Intl

3:15 pm - 6:29 amYOW Ottawa-DEN Denver Intl

17h 14m2 stops Newark Atlanta Hartsfield-Jackson

$449Multiple Airlines

Fri, Dec 4 - Fri, Dec 11

7:10 am - 12:41 amDEN Denver Intl-YOW Ottawa

15h 31m3 stops Dallas/Fort Worth Tampa Toronto Pearson Intl

3:15 pm - 6:29 amYOW Ottawa-DEN Denver Intl

17h 14m2 stops Newark Atlanta Hartsfield-Jackson

$460Multiple Airlines

Fri, Dec 4 - Fri, Dec 11

7:10 am - 12:41 amDEN Denver Intl-YOW Ottawa

15h 31m3 stops Dallas/Fort Worth Tampa Toronto Pearson Intl

3:15 pm - 6:29 amYOW Ottawa-DEN Denver Intl

17h 14m2 stops Newark Atlanta Hartsfield-Jackson

$469Multiple Airlines

Fri, Dec 4 - Fri, Dec 11

5:40 pm - 1:40 amDEN Denver Intl-YOW Ottawa

6h 00m1 stop Toronto Pearson Intl

2:55 pm - 8:27 pmYOW Ottawa-DEN Denver Intl

7h 32m1 stop Montreal Pierre Elliott Trudeau Intl

$781Air Canada

Fri, Dec 4 - Fri, Dec 11

8:00 am - 9:56 pmDEN Denver Intl-YOW Ottawa

11h 56m1 stop Newark

6:00 am - 9:34 pmYOW Ottawa-DEN Denver Intl

17h 34m1 stop Newark

$873United Airlines

Sat, Nov 14 - Sat, Nov 21

6:05 am - 9:56 pmDEN Denver Intl-YOW Ottawa

13h 51m1 stop Newark

6:00 am - 3:48 pmYOW Ottawa-DEN Denver Intl

11h 48m1 stop Newark

$873United Airlines

Mon, Nov 9 - Tue, Nov 17

7:15 pm - 1:11 pmDEN Denver Intl-YOW Ottawa

15h 56m1 stop Newark

6:00 am - 3:48 pmYOW Ottawa-DEN Denver Intl

11h 48m1 stop Newark

$873United Airlines

Sun, Nov 8 - Thu, Nov 19

11:25 am - 7:52 pmDEN Denver Intl-YOW Ottawa

6h 27m1 stop Montreal Pierre Elliott Trudeau Intl

7:45 am - 6:13 pmYOW Ottawa-DEN Denver Intl

12h 28m1 stop Vancouver Intl

$904Air Canada

Mon, Feb 15 - Sun, Feb 28

11:25 am - 7:52 pmDEN Denver Intl-YOW Ottawa

6h 27m1 stop Montreal Pierre Elliott Trudeau Intl

2:55 pm - 8:14 pmYOW Ottawa-DEN Denver Intl

7h 19m1 stop Montreal Pierre Elliott Trudeau Intl

$939Air Canada

Fri, Mar 26 - Fri, Apr 2

Cheap last minute flights

Enter your travel dates to find the best prices.

12:05 pm - 12:53 amDEN Denver Intl-YOW Ottawa

10h 48m1 stop Vancouver Intl

2:55 pm - 8:27 pmYOW Ottawa-DEN Denver Intl

7h 32m1 stop Montreal Pierre Elliott Trudeau Intl

$1,382Air Canada

Thu, Oct 22 - Mon, Oct 26

9:40 am - 5:29 pmDEN Denver Intl-YOW Ottawa

5h 49m1 stop Montreal Pierre Elliott Trudeau Intl

2:55 pm - 8:27 pmYOW Ottawa-DEN Denver Intl

7h 32m1 stop Montreal Pierre Elliott Trudeau Intl

$1,385Air Canada

Thu, Oct 22 - Mon, Oct 26

6:00 am - 10:35 pmDEN Denver Intl-YOW Ottawa

14h 35m1 stop Newark

6:00 am - 10:35 amYOW Ottawa-DEN Denver Intl

6h 35m1 stop Toronto Pearson Intl

$1,391United Airlines

Thu, Oct 22 - Mon, Oct 26

11:52 pm - 3:10 pmDEN Denver Intl-YOW Ottawa

13h 18m2 stops Washington, D.C. Dulles Intl Toronto Pearson Intl

5:10 am - 10:35 amYOW Ottawa-DEN Denver Intl

7h 25m1 stop Toronto Pearson Intl

$1,405United Airlines

Thu, Oct 22 - Mon, Oct 26

6:00 am - 9:52 pmDEN Denver Intl-YOW Ottawa

13h 52m2 stops Chicago O'Hare Intl Toronto Island

2:55 pm - 8:27 pmYOW Ottawa-DEN Denver Intl

7h 32m1 stop Montreal Pierre Elliott Trudeau Intl

$1,415Air Canada

Thu, Oct 22 - Mon, Oct 26

7:45 am - 9:52 pmDEN Denver Intl-YOW Ottawa

12h 07m2 stops Chicago O'Hare Intl Toronto Island

2:55 pm - 8:27 pmYOW Ottawa-DEN Denver Intl

7h 32m1 stop Montreal Pierre Elliott Trudeau Intl

$1,415Air Canada

Thu, Oct 22 - Mon, Oct 26

6:20 am - 5:35 pmDEN Denver Intl-YOW Ottawa

9h 15m2 stops Detroit Metropolitan Wayne County Toronto Pearson Intl

6:55 am - 5:52 pmYOW Ottawa-DEN Denver Intl

12h 57m2 stops Toronto Pearson Intl Atlanta Hartsfield-Jackson

$1,645Delta

Thu, Oct 22 - Sat, Oct 24

6:09 pm - 2:55 pmDEN Denver Intl-YOW Ottawa

18h 46m2 stops Chicago O'Hare Intl Toronto Pearson Intl

7:00 am - 8:22 pmYOW Ottawa-DEN Denver Intl

15h 22m3 stops Toronto Pearson Intl New York LaGuardia Charlotte Douglas

$1,774American Airlines

Thu, Oct 22 - Sat, Oct 24

11:53 pm - 2:55 pmDEN Denver Intl-YOW Ottawa

13h 02m3 stops Miami Charlotte Douglas Toronto Pearson Intl

7:00 am - 8:22 pmYOW Ottawa-DEN Denver Intl

15h 22m3 stops Toronto Pearson Intl New York LaGuardia Charlotte Douglas

$1,813American Airlines

Thu, Oct 22 - Sat, Oct 24

11:07 am - 12:20 amDEN Denver Intl-YOW Ottawa

11h 13m2 stops Minneapolis St Paul Toronto Pearson Intl

6:10 am - 4:56 pmYOW Ottawa-DEN Denver Intl

12h 46m2 stops Calgary Salt Lake City

$3,085WestJet

Thu, Oct 22 - Mon, Oct 26

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Delta flights from Denver to Ottawa

Our best Delta deals on Denver to Ottawa flight tickets

Delta

Nov 4

DEN6:20 amDenver Intl

15h 20m

2 stops

YOW11:40 pmOttawa

Nov 18

YOW5:30 amOttawa

11h 44m

2 stops

DEN3:14 pmDenver Intl

$902

Delta

Nov 4

DEN6:00 amDenver Intl

15h 40m

2 stops

YOW11:40 pmOttawa

Nov 14

YOW5:30 amOttawa

13h 40m

2 stops

DEN5:10 pmDenver Intl

$919

Delta

Nov 4

DEN6:00 amDenver Intl

15h 40m

2 stops

YOW11:40 pmOttawa

Nov 13

YOW5:30 amOttawa

16h 50m

2 stops

DEN8:20 pmDenver Intl

$943

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets

United Airlines

Nov 4

DEN1:25 pmDenver Intl

5h 51m

1 stop

YOW9:16 pmOttawa

Nov 18

YOW6:00 amOttawa

11h 48m

1 stop

DEN3:48 pmDenver Intl

$996

United Airlines

Nov 4

DEN11:53 amDenver Intl

8h 03m

1 stop

YOW9:56 pmOttawa

Nov 16

YOW3:10 pmOttawa

8h 26m

1 stop

DEN9:36 pmDenver Intl

$1,106

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 12/4

7:10 am-12:41 am

3 stops15h 31m

Ottawa

Fri 12/11

3:15 pm-6:29 am

2 stops17h 14m

$444

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 12/4

9:04 am-12:41 am

2 stops13h 37m

Ottawa

Fri 12/11

3:15 pm-6:29 am

2 stops17h 14m

$449

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 12/4

7:10 am-12:41 am

3 stops15h 31m

Ottawa

Fri 12/11

3:15 pm-6:29 am

2 stops17h 14m

$460

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 12/4

7:10 am-12:41 am

3 stops15h 31m

Ottawa

Fri 12/11

3:15 pm-6:29 am

2 stops17h 14m

$469

Quickest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 12/4

5:40 pm-1:40 am

1 stop6h 00m

Ottawa

Fri 12/11

2:55 pm-8:27 pm

1 stop7h 32m

$781

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 11/14

8:00 am-9:56 pm

1 stop11h 56m

Ottawa

Sat 11/21

6:00 am-9:34 pm

1 stop17h 34m

$873

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Mon 11/9

6:05 am-9:56 pm

1 stop13h 51m

Ottawa

Tue 11/17

6:00 am-3:48 pm

1 stop11h 48m

$873

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 11/8

7:15 pm-1:11 pm

1 stop15h 56m

Ottawa

Thu 11/19

6:00 am-3:48 pm

1 stop11h 48m

$873

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Mon 2/15

11:25 am-7:52 pm

1 stop6h 27m

Ottawa

Sun 2/28

7:45 am-6:13 pm

1 stop12h 28m

$904

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 3/26

11:25 am-7:52 pm

1 stop6h 27m

Ottawa

Fri 4/2

2:55 pm-8:14 pm

1 stop7h 19m

$939

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the typical price of a round-trip flight between Denver and Ottawa?

Prices are currently low for flights on this route.

Typical prices usually range from $786 to $1,086.
The lowest price recently found on this route was $444.

What is the cheapest month to fly to Ottawa?

In general, August is the cheapest month to fly from Denver to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $691. The month of February is another great option to travel to Ottawa, with average flight prices from Denver averaging around $750.

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

Best Price Found	$254
Fastest flight time	10h 41m
Direct flights	None

The best one-way flight to Ottawa from Denver in the past 72 hours is $254. The best round-trip flight deal from Denver to Ottawa found on momondo in the last 72 hours is $444.

The fastest flight from Denver to Ottawa takes 10h 41m

There are no direct flights from Denver to Ottawa. There are no popular flight routes from Denver to Ottawa.

Search flight deals

Frequently asked questions about flying from Denver to Ottawa

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 10h 41m.
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?
The number of operators available for flights from Denver Intl Airport to Ottawa Airport is 2 as of October 2026.
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?
Based on momondo bookings for flights between Denver and Ottawa, the leading airline is Air Canada, making up 52% of the total bookings. Other popular airlines include United Airlines with 48%.

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
Air Canada	PriceFrom $666	Free Cancellation	Rating 7.1 11,791 reviews		Search Air Canada flights
United Airlines	PriceFrom $727	Free Cancellation	Rating 7.3 10,400 reviews		Search United Airlines flights

Gatineau

Brockville

Pembroke

Calabogie

Prescott

Petawawa

Smiths Falls

Perth

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.

An easier way to manage your Ottawa trip

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Cheap flights from Denver to Ottawa from $254

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 11/23. 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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Delta flights from Denver to Ottawa

Our best Delta deals on Denver to Ottawa flight tickets

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets

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How to get the cheapest flight ticket from Denver to Ottawa

What is the typical price of a round-trip flight between Denver and Ottawa?

What is the cheapest month to fly to Ottawa?

What is the cheapest airline that flies from Denver Intl to Ottawa?

What airlines fly to Ottawa?

When to book flights from Denver to Ottawa

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Ottawa?

Why use momondo?

An easier way to manage your Ottawa trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Airports servicing Ontario

Fly your favorite airline to Ottawa

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ottawa

List of cabin classes available on flights landing in Ottawa. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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