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$181+ Cheap flights from Denver (DEN) to Ottawa (YOW)

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YOW
abr 2 — abr 91
qua 4/2
qua 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Ottawa are usually found in October or November, booked 39 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 março 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$269
(Trip.com)

One-way from

$181
(Trip.com)

Popular in

April

Cheapest in

October

Average price

$623
Provider with most accurate pricing for Denver Intl-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Ottawa flights.
Search Deals
From Denver Intl to Ottawa
Search Deals
One-way flight from Denver Intl to Ottawa
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($80 potential savings vs. average RT price).
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Average for round-trip flights in March 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 março 28, 2025.

This Trip.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 7/2412:15 pmDEN - YOW
1 stop10h 26mWestJet
dom 8/106:00 amYOW - DEN
1 stop14h 52mWestJet
Deal found 3/27$269
This Mytrip deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 5/1512:15 pmDEN - YOW
3 stops30h 48mMultiple Airlines
seg 5/196:10 amYOW - DEN
2 stops31h 17mMultiple Airlines
Deal found 3/27$368
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 6/116:20 amDEN - YOW
2 stops16h 02mDelta
seg 6/165:55 amYOW - DEN
2 stops16h 34mDelta
Deal found 3/27$607
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 6/117:05 pmDEN - YOW
1 stop17h 22mUnited Airlines
seg 6/165:25 pmYOW - DEN
1 stop15h 20mUnited Airlines
Deal found 3/27$943

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 2,558,603 searches. Data last updated março 28, 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

qui 7/24

12:15 pm-12:41 am

1 stop10h 26m

Ottawa

dom 8/10

6:00 am-6:52 pm

1 stop14h 52m

$269

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

qui 5/15

12:15 pm-9:03 pm

3 stops30h 48m

Ottawa

seg 5/19

6:10 am-11:27 am

2 stops31h 17m

$368

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

qua 6/11

6:20 am-12:22 am

2 stops16h 02m

Ottawa

seg 6/16

5:55 am-8:29 pm

2 stops16h 34m

$607

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

qua 6/11

7:05 pm-2:27 pm

1 stop17h 22m

Ottawa

seg 6/16

5:25 pm-6:45 am

1 stop15h 20m

$943

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

qui 4/10

7:00 am-12:44 am

2 stops15h 44m

$181

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

ter 5/27

9:15 am-12:22 am

2 stops13h 07m

$207

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

ter 5/27

12:15 pm-12:41 am

1 stop10h 26m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Compare providers for flights from Denver to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Ottawa in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 21, 2025.

The best time to book flights from Denver to Ottawa is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Ottawa (average of $294). Flying from Denver to Ottawa in May is currently the most expensive (average of $466). 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.

What is the cheapest time of day to fly from DEN to YOW?

Find hourly flight availability from Denver to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated março 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to Ottawa in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at noon.

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 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

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 março 28, 2025.
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

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.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

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
2,785 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

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?

    Our cheapest airline available from Denver to Ottawa is WestJet. Our recent data shows that you can find tickets from as low as $269 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $607 and $943 round-trip. WestJet is priced at 56% lower than the current average price of a flight leaving 3 months from now.

  • 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, January is the cheapest month in which you can book a flight from Denver to Ottawa (average of $294). Flying from Denver to Ottawa in May is currently the most expensive (average of $466). 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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Gatineau
Brockville
Pembroke
Petawawa

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Top 2 airlines flying from Denver to Ottawa

Discover the top 2 airlines 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 2,558,603 searches. Data last updated março 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$299Average$544FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$314Average$519FlexibilityNo cancel feeOn-time69%
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