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Cheap flights from Ottawa to Denver from C$ 352

YOW — DEN
11 Nov — 18 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Denver

Wed 25/1110:15 a.m. -
3 stops15h 52m
Wed 2/128:54 a.m. -
2 stops9h 14m
Deal found 11/10C$ 707
Fri 6/115:45 p.m. -
2 stops20h 57m
Fri 13/119:19 p.m. -
3 stops25h 18m
Deal found 9/10C$ 805
Tue 24/117:45 a.m. -
1 stop12h 28m
Sun 29/115:40 p.m. -
1 stop6h 00m
Deal found 9/10C$ 822
Sun 8/1112:50 p.m. -
2 stops21h 34m
Wed 25/1110:51 a.m. -
1 stop10h 28m
Deal found 11/10C$ 852
Fri 6/1112:10 p.m. -
1 stop6h 40m
Fri 13/115:40 p.m. -
1 stop6h 00m
Deal found 9/10C$ 857
Sat 31/105:35 a.m. -
2 stops11h 31m
Wed 4/116:00 a.m. -
2 stops15h 40m
Deal found 8/10C$ 869
Wed 4/118:00 a.m. -
1 stop14h 00m
Fri 27/111:15 p.m. -
2 stops21h 54m
Deal found 11/10C$ 871
Wed 18/115:30 a.m. -
2 stops13h 40m
Sun 22/116:10 a.m. -
2 stops15h 30m
Deal found 10/10C$ 878
Tue 24/117:00 a.m. -
2 stops19h 07m
Sun 29/116:42 a.m. -
3 stops14h 58m
Deal found 10/10C$ 881

Find flight deals from Ottawa to Denver

Round-trip from

C$ 707

One-way from

C$ 352

Popular in

January

Cheapest in

April

Average price

C$ 908
25/11-2/12
  • 25/11-2/12
  • 5 total stops
  • 25h 06m total
  • Ottawa to Denver
Search Deals
23/11-31/12
  • 23/11-31/12
  • 2 total stops
  • 17h 27m total
  • Ottawa to Denver
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 23/11

8:40 a.m.-12:07 a.m.

2 stops17h 27m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 352

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Wed 25/11

10:15 a.m.-7:37 p.m.

2 stops35h 22m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 369

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Tue 2/2

5:30 a.m.-5:30 p.m.

2 stops14h 00m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 440
Quickest round-trip

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Tue 2/2

7:45 a.m.-6:13 p.m.

1 stop12h 28m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 463

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sat 6/2

5:30 a.m.-5:30 p.m.

2 stops14h 00m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 490

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sat 6/2

6:10 a.m.-12:38 p.m.

3 stops32h 28m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 631

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sun 18/10

5:10 a.m.-4:22 p.m.

2 stops13h 12m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 710

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sun 18/10

2:10 p.m.-8:00 p.m.

2 stops31h 50m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 738

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Fri 6/11

12:10 p.m.-4:50 p.m.

1 stop6h 40m

Denver Intl

Fri 13/11

5:40 p.m.-1:40 a.m.

1 stop6h 00m

C$ 857

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sat 31/10

5:35 a.m.-3:06 p.m.

2 stops11h 31m

Denver Intl

Wed 4/11

6:00 a.m.-11:40 p.m.

2 stops15h 40m

C$ 869

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 resultsSorted by cheapest first
1
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Best time to book a flight from Ottawa to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Ottawa with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ottawa to Denver

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

Currently, April is the cheapest month in which you can book a flight from Ottawa to Denver (average of C$ 801). Flying from Ottawa to Denver in January is currently the most expensive (average of C$ 1,291). 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 Ottawa to Denver?

Airfare is typical for this route at the moment.

Ottawa to Denver flights typically cost between C$ 707 and C$ 1,059 in November.
The cheapest round-trip price found within the last 5 days was C$ 707 on Multiple Airlines (25 Nov-2 Dec).

Reviews of airlines servicing Denver

Read reviews from past customers who have flown United Airlines and Air Canada from Ottawa to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,348 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,348 reviews
United Airlines
7.4
Good
10,348 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
Air Canada
7.1
Good
11,758 reviews
United Airlines
7.4
Good
10,348 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

Related info for your journey

  • How long is the flight from Ottawa to Denver?

    Airlines like Delta and Air Canada fly from Ottawa to Denver in about 11h 31m. The time it takes to get you to your destination can typically vary by up to 57m. The distance from Ottawa to Denver is about 2435 km. This flight may include one or multiple stops.

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

    Our cheapest airline available from Ottawa to Denver is United Airlines. Our recent data shows that you can find tickets from as low as C$ 506 on this airline. An additional option worth looking into is Air Canada, starting at C$ 749. You may be able to fly from Ottawa to Denver for 45% less than the average price by searching for these airlines.

  • Can I find deals for flights from Ottawa to Denver that include hotel bookings?

    Yes. In addition to deals on Ottawa to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Denver.

  • Can I find deals for business class flights from Ottawa to Denver?

    Yes. Cheapflights offers flight deals from Ottawa to Denver 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 Ottawa to Denver?

    Currently, April is the cheapest month in which you can book a flight from Ottawa to Denver (average of C$ 801). Flying from Ottawa to Denver in January is currently the most expensive (average of C$ 1,291). 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
Black Hawk

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Top 2 airlines flying from Ottawa to Denver

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 506AverageC$ 864FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 749AverageC$ 885FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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