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Cheap flights from Denver to Ottawa from C$ 168

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YOW
17 Jun — 24 Jun1
1 adult

Cheap 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 12 June 2025.

Round-trip from

C$ 383

One-way from

C$ 168

Popular in

January

Cheapest in

October

Average price

C$ 700
WestJet
  • WestJet
  • 21/8-25/8
  • 2 total stops
  • 28h 38m total
  • Denver to Ottawa
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Air Canada
  • Air Canada
  • 1/7
  • 1 total stop
  • 11h 14m total
  • Denver to Ottawa
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Highest demand for flights based on searches. 15% potential increase in price (C$ 163 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Denver to Ottawa

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 12 June 2025.

Thu 21/812:15 p.m.DEN - YOW
1 stop10h 26mWestJet
Mon 25/87:15 p.m.YOW - DEN
1 stop18h 12mWestJet
Deal found 10/6C$ 383
Sat 26/77:50 a.m.DEN - YOW
1 stop11h 45mUnited Airlines
Sat 2/87:29 p.m.YOW - DEN
1 stop7h 01mUnited Airlines
Deal found 11/6C$ 410
Mon 28/77:05 p.m.DEN - YOW
1 stop11h 14mAir Canada
Wed 30/75:15 a.m.YOW - DEN
1 stop7h 05mAir Canada
Deal found 12/6C$ 412
Mon 28/712:15 p.m.DEN - YOW
1 stop10h 26mMultiple Airlines
Wed 30/75:45 a.m.YOW - DEN
2 stops15h 34mMultiple Airlines
Deal found 12/6C$ 457
Sat 2/86:00 a.m.DEN - YOW
2 stops16h 22mDelta
Sat 9/85:55 a.m.YOW - DEN
2 stops15h 58mDelta
Deal found 10/6C$ 997
Fri 22/83:50 p.m.DEN - YOW
2 stops28h 15mLufthansa
Mon 25/86:55 p.m.YOW - DEN
2 stops22h 40mLufthansa
Deal found 10/6C$ 15,480

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 12 June 2025.
Use the filters below to find and compare flights from Denver to Ottawa that are best for you.

Fly from

Denver

Fly to

Ottawa

Route

Depart

Return

Price

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 21/8

12:15 p.m.-12:41 a.m.

1 stop10h 26m

Ottawa

Mon 25/8

7:15 p.m.-11:27 a.m.

1 stop18h 12m

C$ 383

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 26/7

7:50 a.m.-9:35 p.m.

1 stop11h 45m

Ottawa

Sat 2/8

7:29 p.m.-12:30 a.m.

1 stop7h 01m

C$ 410

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 28/7

7:05 p.m.-8:19 a.m.

1 stop11h 14m

Ottawa

Wed 30/7

5:15 a.m.-10:20 a.m.

1 stop7h 05m

C$ 412

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 28/7

12:15 p.m.-12:41 a.m.

1 stop10h 26m

Ottawa

Wed 30/7

5:45 a.m.-7:19 p.m.

2 stops15h 34m

C$ 457

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 10/7

12:15 p.m.-12:22 a.m.

2 stops10h 07m

Ottawa

Thu 17/7

5:55 a.m.-1:49 p.m.

2 stops9h 54m

C$ 931

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 22/8

3:50 p.m.-10:05 p.m.

2 stops28h 15m

Ottawa

Mon 25/8

6:55 p.m.-3:35 p.m.

2 stops22h 40m

C$ 15,480

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 1/7

7:05 p.m.-8:19 a.m.

1 stop11h 14m

C$ 168

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 1/7

6:03 a.m.-4:43 p.m.

1 stop8h 40m

C$ 175

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 22/7

12:15 p.m.-5:25 a.m.

2 stops15h 10m

C$ 205

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 22/7

10:29 p.m.-5:25 a.m.

3 stops28h 56m

C$ 219

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

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

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$ 224). Flying from Denver to Ottawa in December is currently the most expensive (average of C$ 326). 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.

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 12 June 2025.
To help decide which airline to fly from Denver to Ottawa, see what other customers have to say about Delta, United Airlines and WestJet. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,139 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines flying from Denver to Ottawa round-trip?

    WestJet, at C$ 383, was found to be the cheapest airline from Denver to Ottawa.Alternate airlines to your destination round-trip include United Airlines and Air Canada. WestJet is currently priced 43% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Denver to Ottawa one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 168. Users have also found prices from C$ 175 and C$ 205 on United Airlines and WestJet, respectively.

  • 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$ 224). Flying from Denver to Ottawa in December is currently the most expensive (average of C$ 326). 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 Denver?

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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Denver to Ottawa

Discover the top airline that operate flights from Denver to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 213AverageC$ 933FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Denver to Ottawa?

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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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