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

WestJet and Delta are the most popular carriers 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.

$166 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

15h 20m1 stop Calgary

6:15 pm - 11:20 amYOW Ottawa-DEN Denver Intl

19h 05m2 stops Edmonton Calgary

$371WestJet

Sun, Oct 4 - Sun, Oct 11

12:15 pm - 5:15 pmDEN Denver Intl-YOW Ottawa

27h 00m1 stop Calgary

4:15 pm - 11:20 amYOW Ottawa-DEN Denver Intl

21h 05m1 stop Calgary

$383WestJet

Sun, Oct 4 - Sun, Oct 11

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

15h 20m1 stop Calgary

1:20 pm - 12:11 pmYOW Ottawa-DEN Denver Intl

24h 51m2 stops Calgary Phoenix Sky Harbor Intl

$391Multiple Airlines

Thu, Sep 17 - Tue, Sep 22

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

15h 20m1 stop Calgary

4:15 pm - 11:20 amYOW Ottawa-DEN Denver Intl

21h 05m1 stop Calgary

$413WestJet

Fri, Oct 2 - Sun, Oct 4

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

6h 20m1 stop Montreal Pierre Elliott Trudeau Intl

6:55 am - 4:58 pmYOW Ottawa-DEN Denver Intl

12h 03m1 stop Vancouver Intl

$757Air Canada

Sat, Oct 3 - Sat, Oct 10

11:52 pm - 2:17 pmDEN Denver Intl-YOW Ottawa

12h 25m1 stop Washington, D.C. Dulles Intl

6:01 pm - 8:16 amYOW Ottawa-DEN Denver Intl

16h 15m1 stop Newark

$870United Airlines

Sat, Sep 26 - Sun, Sep 27

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

$883Air Canada

Thu, Nov 12 - Sun, Nov 15

11:59 pm - 9:11 amDEN Denver Intl-YOW Ottawa

7h 12m1 stop Newark

6:05 am - 2:15 pmYOW Ottawa-DEN Denver Intl

10h 10m1 stop Newark

$894United Airlines

Thu, Oct 8 - Tue, Oct 13

12:22 pm - 11:54 pmDEN Denver Intl-YOW Ottawa

9h 32m1 stop Washington, D.C. Dulles Intl

10:40 am - 6:22 pmYOW Ottawa-DEN Denver Intl

9h 42m1 stop Washington, D.C. Reagan-National

$896United Airlines

Thu, Sep 10 - Mon, Sep 14

9:40 am - 7:45 pmDEN Denver Intl-YOW Ottawa

8h 05m1 stop Montreal Pierre Elliott Trudeau Intl

6:55 am - 4:58 pmYOW Ottawa-DEN Denver Intl

12h 03m1 stop Vancouver Intl

$905Air Canada

Mon, Sep 28 - Tue, Sep 29

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WestJet flights from Denver to Ottawa

Our best WestJet deals on Denver to Ottawa flight tickets

WestJet

Oct 4

DEN12:15 pmDenver Intl

15h 20m

1 stop

YOW5:35 amOttawa

Oct 11

YOW6:15 pmOttawa

19h 05m

2 stops

DEN11:20 amDenver Intl

$371

WestJet

Oct 4

DEN12:15 pmDenver Intl

27h 00m

1 stop

YOW5:15 pmOttawa

Oct 11

YOW4:15 pmOttawa

21h 05m

1 stop

DEN11:20 amDenver Intl

$383

WestJet

Oct 8

DEN12:15 pmDenver Intl

25h 05m

1 stop

YOW3:20 pmOttawa

Oct 11

YOW4:15 pmOttawa

21h 05m

1 stop

DEN11:20 amDenver Intl

$386

Delta flights from Denver to Ottawa

Our best Delta deals on Denver to Ottawa flight tickets

Delta

Sep 3

DEN12:59 amDenver Intl

14h 36m

2 stops

YOW5:35 pmOttawa

Sep 8

YOW6:55 amOttawa

12h 26m

2 stops

DEN5:21 pmDenver Intl

$541

Delta

Sep 3

DEN12:59 amDenver Intl

14h 36m

2 stops

YOW5:35 pmOttawa

Sep 8

YOW6:55 amOttawa

16h 18m

2 stops

DEN9:13 pmDenver Intl

$566

Delta

Oct 19

DEN6:20 amDenver Intl

16h 00m

2 stops

YOW12:20 amOttawa

Oct 22

YOW6:50 amOttawa

17h 01m

2 stops

DEN9:51 pmDenver Intl

$587

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 10/4

12:15 pm-5:35 am

1 stop15h 20m

Ottawa

Sun 10/11

6:15 pm-11:20 am

2 stops19h 05m

$371

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 10/4

12:15 pm-5:15 pm

1 stop27h 00m

Ottawa

Sun 10/11

4:15 pm-11:20 am

1 stop21h 05m

$383

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 9/17

12:15 pm-5:35 am

1 stop15h 20m

Ottawa

Tue 9/22

1:20 pm-12:11 pm

2 stops24h 51m

$391

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 10/2

12:15 pm-5:35 am

1 stop15h 20m

Ottawa

Sun 10/4

4:15 pm-11:20 am

1 stop21h 05m

$413

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 10/3

11:25 am-7:45 pm

1 stop6h 20m

Ottawa

Sat 10/10

6:55 am-4:58 pm

1 stop12h 03m

$757

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 9/26

11:52 pm-2:17 pm

1 stop12h 25m

Ottawa

Sun 9/27

6:01 pm-8:16 am

1 stop16h 15m

$870

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 11/12

11:20 am-7:52 pm

1 stop6h 32m

Ottawa

Sun 11/15

7:45 am-6:13 pm

1 stop12h 28m

$883

Quickest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 10/8

11:59 pm-9:11 am

1 stop7h 12m

Ottawa

Tue 10/13

6:05 am-2:15 pm

1 stop10h 10m

$894

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 9/10

12:22 pm-11:54 pm

1 stop9h 32m

Ottawa

Mon 9/14

10:40 am-6:22 pm

1 stop9h 42m

$896

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Mon 9/28

9:40 am-7:45 pm

1 stop8h 05m

Ottawa

Tue 9/29

6:55 am-4:58 pm

1 stop12h 03m

$905

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 $469 to $804.
The lowest price recently found on this route was $371.

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	$166
Fastest flight time	6h 00m
Direct flights	None

The best one-way flight to Ottawa from Denver in the past 72 hours is $166. The best round-trip flight deal from Denver to Ottawa found on momondo in the last 72 hours is $371.

The fastest flight from Denver to Ottawa takes 6h 00m

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 00m.
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 11,524 reviews		Search Air Canada flights
United Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 10,113 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.

An easier way to manage your Ottawa trip

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Cheap flights from Denver to Ottawa from $166

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 10/5. 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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WestJet flights from Denver to Ottawa

Our best WestJet 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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