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Cheap flights from Denver to Ottawa from C$ 238

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YOW
25 May — 1 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Denver to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from Denver to Ottawa
Explore the most affordable flight options available from Denver to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Tue 26/512:15 p.m.
DEN
-
YOW
1 stop15h 20m
WestJet
Fri 29/56:15 p.m.
YOW
-
DEN
2 stops19h 05m
WestJet
Deal found 21/4C$ 552
Tue 26/512:15 p.m.
DEN
-
YOW
1 stop15h 20m
WestJet
Thu 28/56:15 p.m.
YOW
-
DEN
2 stops43h 05m
WestJet
Deal found 21/4C$ 578
Mon 8/610:29 p.m.
DEN
-
YOW
2 stops29h 06m
Multiple Airlines
Mon 15/61:20 p.m.
YOW
-
DEN
1 stop24h 00m
Multiple Airlines
Deal found 24/4C$ 584
Wed 3/612:15 p.m.
DEN
-
YOW
2 stops22h 15m
WestJet
Mon 8/67:20 a.m.
YOW
-
DEN
1 stop30h 00m
WestJet
Deal found 22/4C$ 588
Fri 19/612:15 p.m.
DEN
-
YOW
2 stops22h 15m
WestJet
Tue 23/64:15 p.m.
YOW
-
DEN
1 stop21h 05m
WestJet
Deal found 23/4C$ 590
Fri 19/612:15 p.m.
DEN
-
YOW
2 stops22h 15m
WestJet
Sun 21/66:15 p.m.
YOW
-
DEN
2 stops19h 05m
WestJet
Deal found 23/4C$ 591
Thu 4/612:15 p.m.
DEN
-
YOW
2 stops46h 15m
WestJet
Sun 7/67:20 a.m.
YOW
-
DEN
1 stop30h 00m
WestJet
Deal found 22/4C$ 630
Tue 26/512:15 p.m.
DEN
-
YOW
1 stop15h 20m
Multiple Airlines
Thu 28/57:20 a.m.
YOW
-
DEN
2 stops19h 18m
Multiple Airlines
Deal found 21/4C$ 635

Find flight deals from Denver to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 April 2026.

Round-trip from

C$ 552

One-way from

C$ 238

Popular in

March

Cheapest in

October

Average price

C$ 1,081
WestJet
  • WestJet
  • 26/5-29/5
  • 3 total stops
  • 34h 25m total
  • Denver to Ottawa
Search Deals
WestJet
  • WestJet
  • 15/5
  • 2 total stops
  • 22h 15m total
  • Denver to Ottawa
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 384 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 74 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 25 April 2026.
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

Cheapest round-trip

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 19/6

12:15 p.m.-5:35 a.m.

1 stop15h 20m

Ottawa

Sun 21/6

1:20 p.m.-11:20 a.m.

1 stop24h 00m

C$ 598

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 23/5

12:15 p.m.-5:35 a.m.

1 stop15h 20m

Ottawa

Sat 30/5

4:15 p.m.-11:20 a.m.

1 stop21h 05m

C$ 677

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 15/5

12:15 p.m.-5:35 a.m.

1 stop15h 20m

Ottawa

Mon 18/5

4:20 p.m.-10:24 p.m.

2 stops32h 04m

C$ 680

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 4/6

12:15 p.m.-5:35 a.m.

1 stop15h 20m

Ottawa

Sun 7/6

7:20 a.m.-11:20 a.m.

1 stop30h 00m

C$ 735

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 4/6

12:15 p.m.-12:30 p.m.

2 stops22h 15m

Ottawa

Sun 7/6

8:55 a.m.-11:20 a.m.

3 stops28h 25m

C$ 787

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 7/6

6:00 a.m.-12:20 a.m.

2 stops16h 20m

Ottawa

Sun 14/6

6:55 a.m.-8:54 p.m.

2 stops15h 59m

C$ 790
Quickest round-trip

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 8/6

6:00 a.m.-12:20 a.m.

2 stops16h 20m

Ottawa

Mon 15/6

6:55 a.m.-5:39 p.m.

2 stops12h 44m

C$ 790

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 19/6

6:00 a.m.-12:20 a.m.

2 stops16h 20m

Ottawa

Tue 23/6

6:55 a.m.-5:39 p.m.

2 stops12h 44m

C$ 824

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 24/9

12:15 p.m.-12:30 p.m.

2 stops22h 15m

Ottawa

Mon 28/9

8:15 p.m.-4:43 p.m.

2 stops22h 28m

C$ 857

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 23/9

12:59 a.m.-5:35 p.m.

2 stops14h 36m

Ottawa

Mon 28/9

6:55 a.m.-8:19 p.m.

2 stops15h 24m

C$ 868

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/4

Showing 1-10 of 16 resultsSorted by cheapest first
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Best time to book a flight from Denver to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Ottawa

How much does it cost to fly round-trip from Denver to Ottawa?

Related info for your journey

Find useful and relevant information for your journey from Denver to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Denver to Ottawa?

    There are many flights that can get you from Denver to Ottawa in 15h 20m. Fly via WestJet to get the fastest option. The distance between Denver and Ottawa is about 2435 km.

  • Can I find deals for flights from Denver to Ottawa that include hotel bookings?

    Yes. In addition to deals on Denver to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Ottawa.

  • Can I find deals for business class flights from Denver to Ottawa?

    Yes. Cheapflights offers flight deals from Denver to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Wakefield
Pembroke
Smiths Falls

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Denver to Ottawa.

Can Cheapflights find flights from Denver to Ottawa with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Denver to Ottawa, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Denver to Ottawa become cheaper?

Yes! Start tracking prices for Denver to Ottawa flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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