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

WestJet 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 August 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.

$163 Cheap Flights from Denver to Ottawa in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Ottawa

Round-trip

One-way

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Cheap round-trip flights

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10:47 pm - 5:35 amDEN Denver Intl-YOW Ottawa

28h 48m2 stops Phoenix Sky Harbor Intl Calgary

8:15 pm - 11:20 amYOW Ottawa-DEN Denver Intl

17h 05m1 stop Calgary

$374Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

12:15 pm - 5:35 amDEN Denver Intl-YOW Ottawa

15h 20m1 stop Calgary

1:20 pm - 9:10 amYOW Ottawa-DEN Denver Intl

21h 50m2 stops Calgary Phoenix Sky Harbor Intl

$391Multiple Airlines

Mon, Oct 12 - Mon, Oct 19

12:15 pm - 5:35 amDEN Denver Intl-YOW Ottawa

15h 20m1 stop Calgary

7:20 am - 11:48 pmYOW Ottawa-DEN Denver Intl

18h 28m2 stops Calgary Phoenix Sky Harbor Intl

$397Multiple Airlines

Fri, Sep 18 - Mon, Sep 28

10:30 am - 2:33 pmDEN Denver Intl-YOW Ottawa

26h 03m1 stop Orlando

8:15 pm - 11:20 amYOW Ottawa-DEN Denver Intl

17h 05m1 stop Calgary

$410Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

11:25 am - 7:45 pmDEN Denver Intl-YOW Ottawa

6h 20m1 stop Montreal Pierre Elliott Trudeau Intl

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

12h 28m1 stop Vancouver Intl

$765Air Canada

Sat, Oct 24 - Mon, Oct 26

11:20 am - 7:52 pmDEN Denver Intl-YOW Ottawa

6h 32m1 stop Montreal Pierre Elliott Trudeau Intl

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

12h 28m1 stop Vancouver Intl

$765Air Canada

Wed, Nov 25 - Sun, Nov 29

11:25 am - 8:50 pmDEN Denver Intl-YOW Ottawa

7h 25m1 stop Montreal Pierre Elliott Trudeau Intl

6:00 am - 10:31 amYOW Ottawa-DEN Denver Intl

6h 31m1 stop Montreal Pierre Elliott Trudeau Intl

$768Air Canada

Sun, Oct 11 - Sun, Oct 18

6:00 am - 1:59 pmDEN Denver Intl-YOW Ottawa

5h 59m1 stop Chicago O'Hare Intl

5:20 pm - 11:53 pmYOW Ottawa-DEN Denver Intl

8h 33m1 stop Chicago O'Hare Intl

$894United Airlines

Thu, Oct 8 - Tue, Oct 13

11:15 am - 9:35 pmDEN Denver Intl-YOW Ottawa

8h 20m1 stop Chicago O'Hare Intl

6:25 am - 2:32 pmYOW Ottawa-DEN Denver Intl

10h 07m1 stop Chicago O'Hare Intl

$894United Airlines

Sat, Oct 10 - Sat, Oct 17

3:45 pm - 11:54 pmDEN Denver Intl-YOW Ottawa

6h 09m1 stop Washington, D.C. Dulles Intl

2:52 pm - 12:26 amYOW Ottawa-DEN Denver Intl

11h 34m1 stop Washington, D.C. Dulles Intl

$894United Airlines

Sat, Oct 3 - Sat, Oct 10

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American Airlines flights from Denver to Ottawa

Our best American Airlines deals on Denver to Ottawa flight tickets

American Airlines

Sep 14

DEN9:07 amDenver Intl

27h 48m

2 stops

YOW2:55 pmOttawa

Sep 17

YOW7:00 amOttawa

19h 17m

2 stops

DEN12:17 amDenver Intl

$784

American Airlines

Sep 6

DEN4:21 pmDenver Intl

20h 34m

3 stops

YOW2:55 pmOttawa

Sep 9

YOW7:00 amOttawa

14h 38m

3 stops

DEN7:38 pmDenver Intl

$1,400

American Airlines

Sep 1

DEN6:56 amDenver Intl

12h 39m

2 stops

YOW9:35 pmOttawa

Sep 5

YOW8:40 amOttawa

15h 35m

3 stops

DEN10:15 pmDenver Intl

$1,493

Delta flights from Denver to Ottawa

Our best Delta deals on Denver to Ottawa flight tickets

Delta

Sep 18

DEN6:30 amDenver Intl

9h 05m

2 stops

YOW5:35 pmOttawa

Sep 28

YOW6:55 amOttawa

14h 10m

2 stops

DEN7:05 pmDenver Intl

$517

Delta

Sep 27

DEN6:30 amDenver Intl

9h 05m

2 stops

YOW5:35 pmOttawa

Oct 5

YOW6:50 amOttawa

14h 19m

2 stops

DEN7:09 pmDenver Intl

$528

Delta

Oct 3

DEN6:30 amDenver Intl

9h 05m

2 stops

YOW5:35 pmOttawa

Oct 10

YOW6:55 amOttawa

12h 13m

2 stops

DEN5:08 pmDenver Intl

$539

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 9/24

10:47 pm-5:35 am

2 stops28h 48m

Ottawa

Thu 10/1

8:15 pm-11:20 am

1 stop17h 05m

$374

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Mon 10/12

12:15 pm-5:35 am

1 stop15h 20m

Ottawa

Mon 10/19

1:20 pm-9:10 am

2 stops21h 50m

$391

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 9/18

12:15 pm-5:35 am

1 stop15h 20m

Ottawa

Mon 9/28

7:20 am-11:48 pm

2 stops18h 28m

$397

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 9/24

10:30 am-2:33 pm

1 stop26h 03m

Ottawa

Thu 10/1

8:15 pm-11:20 am

1 stop17h 05m

$410

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 10/24

11:25 am-7:45 pm

1 stop6h 20m

Ottawa

Mon 10/26

7:45 am-6:13 pm

1 stop12h 28m

$765

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 11/25

11:20 am-7:52 pm

1 stop6h 32m

Ottawa

Sun 11/29

7:45 am-6:13 pm

1 stop12h 28m

$765

Quickest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 10/11

11:25 am-8:50 pm

1 stop7h 25m

Ottawa

Sun 10/18

6:00 am-10:31 am

1 stop6h 31m

$768

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 10/8

6:00 am-1:59 pm

1 stop5h 59m

Ottawa

Tue 10/13

5:20 pm-11:53 pm

1 stop8h 33m

$894

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 10/10

11:15 am-9:35 pm

1 stop8h 20m

Ottawa

Sat 10/17

6:25 am-2:32 pm

1 stop10h 07m

$894

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 10/3

3:45 pm-11:54 pm

1 stop6h 09m

Ottawa

Sat 10/10

2:52 pm-12:26 am

1 stop11h 34m

$894

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 $387 to $793.
The lowest price recently found on this route was $374.

What is the cheapest month to fly to Ottawa?

In general, November 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 $0. The month of October is another great option to travel to Ottawa, with average flight prices from Denver averaging around $397.

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	$163
Fastest flight time	6h 32m
Direct flights	None

The best one-way flight to Ottawa from Denver in the past 72 hours is $163. The best round-trip flight deal from Denver to Ottawa found on momondo in the last 72 hours is $374.

The fastest flight from Denver to Ottawa takes 6h 32m

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 6h 32m.
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 August 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 55% of the total bookings. Other popular airlines include United Airlines with 45%.

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 $363	Free Cancellation	Rating 7.1 11,550 reviews		Search Air Canada flights
United Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 10,135 reviews		Search United Airlines flights

Gatineau

Brockville

Pembroke

Petawawa

Calabogie

Smiths Falls

Perth

Prescott

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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Cheap flights from Denver to Ottawa from $163

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 9/24. 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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American Airlines flights from Denver to Ottawa

Our best American Airlines deals on Denver to Ottawa flight tickets

Delta flights from Denver to Ottawa

Our best Delta 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?

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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