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Cheap flights from Denver to Ottawa from C$ 339

DEN — YOW
24 Nov — 1 Dec1
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

Fri 4/127:10 a.m. -
3 stops15h 31m
Fri 11/123:15 p.m. -
2 stops17h 14m
Deal found 21/10C$ 622
Sat 5/128:16 p.m. -
2 stops16h 32m
Sat 12/124:40 p.m. -
1 stop17h 33m
Deal found 21/10C$ 682
Sat 7/119:12 p.m. -
2 stops24h 22m
Mon 16/119:15 a.m. -
1 stop25h 14m
Deal found 23/10C$ 819

Find flight deals from Denver to Ottawa

Round-trip from

C$ 622

One-way from

C$ 339

Popular in

October

Cheapest in

August

Average price

C$ 1,658
4/12-11/12
  • 4/12-11/12
  • 5 total stops
  • 32h 45m total
  • Denver to Ottawa
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24/12-31/12
  • 24/12-31/12
  • 2 total stops
  • 23h 11m total
  • Denver to Ottawa
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Highest demand for flights based on searches. 11% potential increase in price (C$ 215 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 54 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
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 Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 20/12

9:23 p.m.-5:56 p.m.

3 stops42h 33m

Ottawa

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 364

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Mon 21/12

5:36 a.m.-5:56 p.m.

3 stops34h 20m

Ottawa

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 391
Quickest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 24/12

6:19 a.m.-12:07 a.m.

1 stop15h 48m

Ottawa

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 392

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 4/12

9:04 a.m.-12:41 a.m.

2 stops13h 37m

Ottawa

Fri 11/12

3:15 p.m.-6:29 a.m.

2 stops17h 14m

C$ 629

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 7/11

9:12 p.m.-11:34 p.m.

2 stops24h 22m

Ottawa

Mon 16/11

9:15 a.m.-8:29 a.m.

1 stop25h 14m

C$ 819

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sat 5/12

9:26 p.m.-6:13 p.m.

2 stops18h 47m

Ottawa

Sat 12/12

9:15 a.m.-6:29 a.m.

2 stops23h 14m

C$ 832

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 8/11

10:43 a.m.-5:22 p.m.

2 stops28h 39m

Ottawa

Mon 16/11

9:15 a.m.-8:29 a.m.

1 stop25h 14m

C$ 882

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 8/11

6:59 p.m.-5:22 p.m.

2 stops20h 23m

Ottawa

Sat 14/11

7:00 a.m.-11:53 p.m.

3 stops18h 53m

C$ 1,085

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/10

Sorted by cheapest first

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Denver to Ottawa?

Currently, August is the cheapest month in which you can book a flight from Denver to Ottawa (average of C$ 968). Flying from Denver to Ottawa in October is currently the most expensive (average of C$ 1,658). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

  • 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.

  • What is the cheapest month to book a flight from Denver to Ottawa?

    Currently, August is the cheapest month in which you can book a flight from Denver to Ottawa (average of C$ 968). Flying from Denver to Ottawa in October is currently the most expensive (average of C$ 1,658). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ottawa?

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

Browse thousands of different options on Cheapflights for your next trip

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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?

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