Find flights
When to book
Airlines
FAQs

Cheap flights from Denver to Ottawa from C$ 217

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YOW
10 Mar — 17 Mar1
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 5 March 2025.

Round-trip from

C$ 448

One-way from

C$ 217

Popular in

April

Cheapest in

October

Average price

C$ 930
WestJet
  • WestJet
  • 22/5-31/5
  • 2 total stops
  • 27h 17m total
  • Denver to Ottawa
Search Deals
United Airlines
  • United Airlines
  • 27/5
  • 1 total stop
  • 15h 14m total
  • Denver to Ottawa
Search Deals
Highest demand for flights based on searches. 35% potential increase in price (C$ 705 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease (C$ 164 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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 5 March 2025.

Thu 22/57:40 p.m.DEN - YOW
1 stop9h 05mWestJet
Sat 31/57:15 p.m.YOW - DEN
1 stop18h 12mWestJet
Deal found 5/3C$ 448
Thu 20/35:11 p.m.DEN - YOW
1 stop21h 34mMultiple Airlines
Sun 30/36:10 p.m.YOW - DEN
1 stop16h 52mMultiple Airlines
Deal found 5/3C$ 473
Thu 20/36:00 p.m.DEN - YOW
1 stop8h 57mAir Canada
Sat 29/35:45 a.m.YOW - DEN
1 stop6h 50mAir Canada
Deal found 5/3C$ 519
Wed 26/37:17 p.m.DEN - YOW
1 stop13h 11mUnited Airlines
Wed 2/46:00 a.m.YOW - DEN
1 stop8h 09mUnited Airlines
Deal found 5/3C$ 530

Find flights from Denver to Ottawa within your budget

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 5 March 2025.

Fly from

Denver

Fly to

Ottawa

Route

Depart

Return

Price

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 22/5

7:40 p.m.-6:45 a.m.

1 stop9h 05m

Ottawa

Sat 31/5

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

1 stop18h 12m

C$ 448

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 20/3

5:11 p.m.-4:45 p.m.

1 stop21h 34m

Ottawa

Sun 30/3

6:10 p.m.-9:02 a.m.

1 stop16h 52m

C$ 473

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 20/3

6:00 p.m.-4:57 a.m.

1 stop8h 57m

Ottawa

Sat 29/3

5:45 a.m.-10:35 a.m.

1 stop6h 50m

C$ 519

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 26/3

7:17 p.m.-10:28 a.m.

1 stop13h 11m

Ottawa

Wed 2/4

6:00 a.m.-12:09 p.m.

1 stop8h 09m

C$ 530

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Tue 27/5

8:50 p.m.-2:04 p.m.

1 stop15h 14m

C$ 217

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Thu 24/7

7:40 p.m.-6:45 a.m.

1 stop9h 05m

C$ 230

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Wed 23/7

12:39 a.m.-5:06 p.m.

1 stop14h 27m

C$ 357

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Fri 25/7

9:40 a.m.-12:22 a.m.

2 stops12h 42m

C$ 953

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

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.

Travel insights for flights from Denver to Ottawa

Get recent, data-driven insights about flights from Denver to Ottawa including ideal travel times, pricing trends, and more.

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 28 February 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 5 March 2025.
Delta
8.0
Very good
8,045 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
8,045 reviews
Delta
8.0
Very good
8,045 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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.

United Airlines
7.4
Good
8,660 reviews
Delta
8.0
Very good
8,045 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
2,788 reviews
Delta
8.0
Very good
8,045 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
8,840 reviews
Delta
8.0
Very good
8,045 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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?

    WestJet, at C$ 448, was found to be the cheapest airline from Denver to Ottawa.Alternate airlines to your destination round-trip include Air Canada and United Airlines. WestJet is currently priced 50% 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 United Airlines. According to our data, you can fly for as low as C$ 217. Users have also found prices from C$ 230 and C$ 953 on WestJet and Delta, 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
Perth
Smiths Falls
Prescott
Brockville
Wakefield
Lanark

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 5 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 498AverageC$ 987FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.