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Cheap flights from Denver to Ottawa from $124

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 10/6. 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

Air Canada Logo
1:25 pm - 9:09 pmDEN-YOW
5h 44m1 stop
Air Canada Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$288Air Canada
Find Deal
Tue, Oct 21 - Thu, Oct 23
Air Canada Logo
6:05 pm - 8:23 amDEN-YOW
12h 18m1 stop
Air Canada Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$301Air Canada
Find Deal
Mon, Oct 6 - Wed, Oct 8
Air Canada Logo
7:05 pm - 8:23 amDEN-YOW
11h 18m1 stop
Air Canada Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$312Air Canada
Find Deal
Tue, Sep 30 - Thu, Oct 16
Logo
7:10 pm - 9:11 amDEN-YOW
12h 01m1 stop
Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$316
Find Deal
Tue, Oct 14 - Thu, Oct 16
Air Canada Logo
7:45 am - 5:04 pmDEN-YOW
7h 19m1 stop
Air Canada Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$318Air Canada
Find Deal
Wed, Sep 24 - Thu, Oct 16
Logo
12:00 pm - 4:51 pmDEN-YOW
26h 51m2 stops
Logo
9:30 am - 11:16 pmYOW-DEN
15h 46m1 stop
$324
Find Deal
Sat, Oct 25 - Sat, Nov 1
United Airlines Logo
6:00 am - 5:04 pmDEN-YOW
9h 04m2 stops
United Airlines Logo
5:15 am - 10:04 amYOW-DEN
6h 49m1 stop
$403United Airlines
Find Deal
Wed, Sep 24 - Thu, Oct 16
United Airlines Logo
11:59 pm - 1:09 pmDEN-YOW
11h 10m2 stops
United Airlines Logo
11:55 am - 10:00 pmYOW-DEN
12h 05m2 stops
$418United Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 8
WestJet Logo
12:15 pm - 12:40 amDEN-YOW
10h 25m1 stop
WestJet Logo
12:20 pm - 11:24 amYOW-DEN
49h 04m2 stops
$918WestJet
Find Deal
Sun, Sep 21 - Tue, Sep 23
WestJet Logo
6:25 am - 12:40 amDEN-YOW
40h 15m2 stops
WestJet Logo
6:00 am - 12:03 pmYOW-DEN
32h 03m2 stops
$920WestJet
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
Oct 21
DEN1:25 pmDenver Intl
5h 44m
1 stop
YOW9:09 pmOttawa
Oct 23
YOW5:15 amOttawa
6h 49m
1 stop
DEN10:04 amDenver Intl
$288
Find similar
Air Canada
Oct 6
DEN6:05 pmDenver Intl
12h 18m
1 stop
YOW8:23 amOttawa
Oct 8
YOW5:15 amOttawa
6h 49m
1 stop
DEN10:04 amDenver Intl
$301
Find similar
Air Canada
Sep 30
DEN7:05 pmDenver Intl
11h 18m
1 stop
YOW8:23 amOttawa
Oct 16
YOW5:15 amOttawa
6h 49m
1 stop
DEN10:04 amDenver Intl
$312
Find similar

United Airlines flights from Denver to Ottawa

Our best United Airlines deals on Denver to Ottawa flight tickets
United Airlines
Sep 24
DEN6:00 amDenver Intl
9h 04m
2 stops
YOW5:04 pmOttawa
Oct 16
YOW5:15 amOttawa
6h 49m
1 stop
DEN10:04 amDenver Intl
$403
Find similar
United Airlines
Oct 6
DEN11:59 pmDenver Intl
11h 10m
2 stops
YOW1:09 pmOttawa
Oct 8
YOW11:55 amOttawa
12h 05m
2 stops
DEN10:00 pmDenver Intl
$418
Find similar
United Airlines
Oct 14
DEN11:59 pmDenver Intl
11h 10m
2 stops
YOW1:09 pmOttawa
Oct 16
YOW5:15 amOttawa
9h 25m
2 stops
DEN12:40 pmDenver Intl
$544
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 September 11, 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 10/21

1:25 pm-9:09 pm

1 stop5h 44m

Ottawa

Thu 10/23

5:15 am-10:04 am

1 stop6h 49m

$288

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 10/6

6:05 pm-8:23 am

1 stop12h 18m

Ottawa

Wed 10/8

5:15 am-10:04 am

1 stop6h 49m

$301

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 9/30

7:05 pm-8:23 am

1 stop11h 18m

Ottawa

Thu 10/16

5:15 am-10:04 am

1 stop6h 49m

$312

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 10/14

7:10 pm-9:11 am

1 stop12h 01m

Ottawa

Thu 10/16

5:15 am-10:04 am

1 stop6h 49m

$316

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 9/24

7:45 am-5:04 pm

1 stop7h 19m

Ottawa

Thu 10/16

5:15 am-10:04 am

1 stop6h 49m

$318

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 10/25

12:00 pm-4:51 pm

2 stops26h 51m

Ottawa

Sat 11/1

9:30 am-11:16 pm

1 stop15h 46m

$324

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 9/24

6:00 am-5:04 pm

2 stops9h 04m

Ottawa

Thu 10/16

5:15 am-10:04 am

1 stop6h 49m

$403

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 10/6

11:59 pm-1:09 pm

2 stops11h 10m

Ottawa

Wed 10/8

11:55 am-10:00 pm

2 stops12h 05m

$418

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 9/21

12:15 pm-12:40 am

1 stop10h 25m

Ottawa

Tue 9/23

12:20 pm-11:24 am

2 stops49h 04m

$918

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 12/23

6:25 am-12:40 am

2 stops40h 15m

Ottawa

Tue 1/6

6:00 am-12:03 pm

2 stops32h 03m

$920

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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.

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.
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 5h 44m.

  • 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
3,091 reviews
Search WestJet flights
Air CanadaPriceFrom $293Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $309Free CancellationRating
7.4
8,937 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
Pembroke
Petawawa
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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