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Cheap flights from Denver to Ottawa from C$ 236

DEN — YOW
11 Oct — 18 Oct1
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 2/1012:15 p.m. -
1 stop15h 20m
Sun 11/104:15 p.m. -
1 stop21h 05m
Deal found 8/9C$ 503
Thu 15/1012:15 p.m. -
1 stop15h 20m
Sat 17/104:15 p.m. -
1 stop21h 05m
Deal found 9/9C$ 506
Fri 2/107:00 a.m. -
2 stops20h 35m
Sun 11/104:15 p.m. -
1 stop21h 05m
Deal found 8/9C$ 508
Thu 1/1012:15 p.m. -
1 stop22h 40m
Tue 6/101:20 p.m. -
2 stops22h 12m
Deal found 8/9C$ 564
Wed 30/910:38 a.m. -
2 stops11h 42m
Wed 7/108:15 p.m. -
1 stop17h 05m
Deal found 6/9C$ 594

Find flight deals from Denver to Ottawa

Round-trip from

C$ 503

One-way from

C$ 236

Popular in

March

Cheapest in

October

Average price

C$ 1,143
WestJet
  • WestJet
  • 2/10-11/10
  • 2 total stops
  • 36h 25m total
  • Denver to Ottawa
Search Deals
WestJet
  • WestJet
  • 25/9-31/12
  • 2 total stops
  • 22h 15m total
  • Denver to Ottawa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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

Fri 25/9

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

2 stops22h 15m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 236

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 21/10

1:07 p.m.-5:35 a.m.

2 stops14h 28m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 264

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 25/9

12:15 p.m.-5:58 p.m.

1 stop27h 43m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 343

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 2/10

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

1 stop15h 20m

Ottawa

Sun 11/10

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

1 stop24h 00m

C$ 558
Quickest round-trip

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 21/10

1:42 p.m.-10:35 p.m.

1 stop6h 53m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 564

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Thu 1/10

7:50 p.m.-5:58 p.m.

2 stops20h 08m

Ottawa

Tue 6/10

2:00 p.m.-4:58 p.m.

3 stops28h 58m

C$ 583

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 30/9

10:38 a.m.-12:20 a.m.

2 stops11h 42m

Ottawa

Wed 7/10

8:15 p.m.-11:20 a.m.

1 stop17h 05m

C$ 594

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Sun 27/9

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

1 stop15h 20m

Ottawa

Tue 29/9

7:00 a.m.-9:32 a.m.

2 stops28h 32m

C$ 691

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 11/11

2:14 p.m.-1:10 p.m.

2 stops20h 56m

Ottawa

Sun 15/11

8:00 a.m.-8:13 a.m.

1 stop26h 13m

C$ 732

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Wed 30/9

6:30 a.m.-12:20 a.m.

2 stops15h 50m

Ottawa

Wed 7/10

6:55 a.m.-5:52 p.m.

2 stops12h 57m

C$ 808

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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

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, October is the cheapest month in which you can book a flight from Denver to Ottawa (average of C$ 549). Flying from Denver to Ottawa in March is currently the most expensive (average of C$ 1,578). 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.

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

Airfare is below average for this route at the moment.

Denver to Ottawa flights typically cost between C$ 510 and C$ 1,213 in October.
The cheapest round-trip price found within the last 5 days was C$ 503 on WestJet (2 Oct-11 Oct).

Related info for your journey

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from Denver to Ottawa (average of C$ 549). Flying from Denver to Ottawa in March is currently the most expensive (average of C$ 1,578). 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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How does Cheapflights help users find flights from Denver to Ottawa?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ottawa from Denver today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Denver to Ottawa?

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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