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Cheap flights from Denver to Ottawa from C$ 172

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YOW
20 Apr — 27 Apr1
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 15 April 2025.

Round-trip from

C$ 394

One-way from

C$ 172

Popular in

January

Cheapest in

October
Air Canada
  • Air Canada
  • 26/7-1/8
  • 2 total stops
  • 17h 35m total
  • Denver to Ottawa
Search Deals
Air Canada
  • Air Canada
  • 8/8
  • 1 total stop
  • 7h 20m total
  • Denver to Ottawa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals

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 15 April 2025.

Sat 26/77:05 p.m.DEN - YOW
1 stop11h 14mAir Canada
Fri 1/86:00 a.m.YOW - DEN
1 stop6h 21mAir Canada
Deal found 14/4C$ 394
Fri 25/712:15 p.m.DEN - YOW
1 stop10h 26mWestJet
Fri 1/87:15 p.m.YOW - DEN
1 stop18h 12mWestJet
Deal found 14/4C$ 395
Mon 2/612:15 p.m.DEN - YOW
1 stop9h 08mMultiple Airlines
Fri 6/65:55 a.m.YOW - DEN
2 stops14h 57mMultiple Airlines
Deal found 15/4C$ 431
Sun 27/76:45 a.m.DEN - YOW
2 stops15h 37mDelta
Sat 2/85:55 a.m.YOW - DEN
2 stops16h 03mDelta
Deal found 14/4C$ 1,413

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 15 April 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

Sat 26/7

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

1 stop11h 14m

Ottawa

Fri 1/8

6:00 a.m.-10:21 a.m.

1 stop6h 21m

C$ 394

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 25/7

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

1 stop10h 26m

Ottawa

Fri 1/8

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

1 stop18h 12m

C$ 395

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 2/6

12:15 p.m.-11:23 p.m.

1 stop9h 08m

Ottawa

Fri 6/6

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

2 stops14h 57m

C$ 431

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 27/7

6:45 a.m.-12:22 a.m.

2 stops15h 37m

Ottawa

Sat 2/8

5:55 a.m.-7:58 p.m.

2 stops16h 03m

C$ 1,413

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 8/8

7:45 a.m.-5:05 p.m.

1 stop7h 20m

C$ 172

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 8/8

7:40 p.m.-5:25 a.m.

2 stops31h 45m

C$ 186

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 24/5

7:00 a.m.-12:42 a.m.

2 stops15h 42m

C$ 192

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/4

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 far ahead should I book a flight from Denver to Ottawa?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Ottawa. Price data was last updated on 11 April 2025.

The price you pay for your flight from Denver to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 15 April 2025.
Delta
8.0
Very good
7,918 reviews
Check prices

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,918 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,805 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,127 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    Air Canada, at C$ 394, was found to be the cheapest airline from Denver to Ottawa.Alternate airlines to your destination round-trip include WestJet and Delta. Air Canada is currently priced 46% below the average price you’ll pay for this route.

  • 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
Perth
Smiths Falls
Prescott
Brockville
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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 217AverageC$ 949FlexibilityNo 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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