Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Ottawa from $121

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 2/4. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Denver to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:26 pm - 2:45 pm
DEN
-
YOW
20h 19m2 stops
Multiple Airlines Logo
9:40 am - 3:16 pm
YOW
-
DEN
31h 36m1 stop
$325Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
7:00 am - 1:37 am
YOW
-
DEN
20h 37m2 stops
$347Multiple Airlines
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
4:50 pm - 5:13 pm
DEN
-
YOW
22h 23m1 stop
Multiple Airlines Logo
7:00 am - 8:12 pm
YOW
-
DEN
15h 12m2 stops
$359Multiple Airlines
Wed, Feb 11 - Wed, Feb 18
Multiple Airlines Logo
1:42 pm - 5:25 pm
DEN
-
YOW
25h 43m2 stops
Multiple Airlines Logo
3:55 pm - 1:37 am
YOW
-
DEN
11h 42m1 stop
$372Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
7:15 pm - 12:19 pm
YOW
-
DEN
19h 04m2 stops
$377Multiple Airlines
Mon, Jan 19 - Fri, Jan 30
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
4:20 pm - 10:00 am
YOW
-
DEN
19h 40m1 stop
$378Multiple Airlines
Mon, Jan 19 - Fri, Jan 30
Multiple Airlines Logo
4:50 pm - 5:13 pm
DEN
-
YOW
22h 23m1 stop
Multiple Airlines Logo
8:40 am - 8:12 pm
YOW
-
DEN
13h 32m2 stops
$386Multiple Airlines
Tue, Feb 24 - Sat, Feb 28
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
3:55 pm - 1:37 am
YOW
-
DEN
11h 42m1 stop
$389Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
6:50 am - 4:06 pm
YOW
-
DEN
11h 16m2 stops
$406Multiple Airlines
Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
11:59 pm - 5:13 pm
DEN
-
YOW
15h 14m1 stop
Multiple Airlines Logo
8:40 am - 8:12 pm
YOW
-
DEN
13h 32m2 stops
$407Multiple Airlines
Mon, Feb 23 - Sat, Feb 28

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets
United Airlines
Feb 22
DEN6:00 amDenver Intl
15h 54m
1 stop
YOW11:54 pmOttawa
Feb 25
YOW10:30 amOttawa
11h 10m
1 stop
DEN7:40 pmDenver Intl
$683
Find similar
United Airlines
Feb 23
DEN6:00 amDenver Intl
13h 18m
2 stops
YOW9:18 pmOttawa
Feb 26
YOW9:45 amOttawa
16h 45m
1 stop
DEN12:30 amDenver Intl
$695
Find similar
United Airlines
Jan 22
DEN7:50 amDenver Intl
12h 06m
2 stops
YOW9:56 pmOttawa
Jan 29
YOW6:20 amOttawa
14h 01m
2 stops
DEN6:21 pmDenver Intl
$700
Find similar

American Airlines flights from Denver to Ottawa

Our best American Airlines deals on Denver to Ottawa flight tickets
American Airlines
Dec 23
DEN5:44 pmDenver Intl
21h 07m
2 stops
YOW4:51 pmOttawa
Jan 6
YOW6:45 amOttawa
18h 31m
2 stops
DEN11:16 pmDenver Intl
$1,010
Find similar
American Airlines
Dec 23
DEN5:44 pmDenver Intl
21h 07m
2 stops
YOW4:51 pmOttawa
Jan 6
YOW6:45 amOttawa
17h 49m
3 stops
DEN10:34 pmDenver Intl
$1,024
Find similar
American Airlines
Dec 23
DEN6:44 amDenver Intl
15h 57m
2 stops
YOW12:41 amOttawa
Jan 6
YOW6:45 amOttawa
17h 49m
3 stops
DEN10:34 pmDenver Intl
$1,039
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 December 9, 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

Thu 1/22

4:26 pm-2:45 pm

2 stops20h 19m

Ottawa

Thu 1/29

9:40 am-3:16 pm

1 stop31h 36m

$325

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 1/7

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Wed 1/14

7:00 am-1:37 am

2 stops20h 37m

$347

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 2/11

4:50 pm-5:13 pm

1 stop22h 23m

Ottawa

Wed 2/18

7:00 am-8:12 pm

2 stops15h 12m

$359

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 1/12

1:42 pm-5:25 pm

2 stops25h 43m

Ottawa

Mon 1/19

3:55 pm-1:37 am

1 stop11h 42m

$372

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 1/19

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Fri 1/30

7:15 pm-12:19 pm

2 stops19h 04m

$377

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 1/19

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Fri 1/30

4:20 pm-10:00 am

1 stop19h 40m

$378

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 2/24

4:50 pm-5:13 pm

1 stop22h 23m

Ottawa

Sat 2/28

8:40 am-8:12 pm

2 stops13h 32m

$386

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 1/12

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Mon 1/19

3:55 pm-1:37 am

1 stop11h 42m

$389

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 2/23

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Thu 2/26

6:50 am-4:06 pm

2 stops11h 16m

$406

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 2/23

11:59 pm-5:13 pm

1 stop15h 14m

Ottawa

Sat 2/28

8:40 am-8:12 pm

2 stops13h 32m

$407

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ottawa from

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

Fastest flight time

9h 13m

Direct flights

None
The fastest flight from Denver to Ottawa takes 9h 13m
There are no direct flights from Denver to Ottawa. There are no popular flight routes from Denver to Ottawa.
Search flight deals

  • 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 9h 08m.

  • 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
3,194 reviews
Search WestJet flights
Air CanadaPriceFrom $290Free CancellationRating
7.1
10,515 reviews
Search Air Canada flights
United AirlinesPriceFrom $348Free CancellationRating
7.4
9,092 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
Pembroke
Brockville
Calabogie
Petawawa
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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/8
Thu 1/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada