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Cheap flights from Ottawa to Denver from C$ 315

YOW — DEN
29 Nov — 6 Dec1
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

Tue 1/128:00 a.m. -
1 stop27h 58m
Tue 8/1210:42 p.m. -
2 stops22h 58m
Deal found 26/10C$ 607
Fri 11/125:30 a.m. -
2 stops28h 43m
Fri 18/126:58 p.m. -
1 stop27h 11m
Deal found 27/10C$ 615
Mon 16/115:45 p.m. -
2 stops18h 03m
Thu 26/1111:59 p.m. -
1 stop14h 46m
Deal found 26/10C$ 641
Mon 16/115:45 p.m. -
2 stops18h 03m
Fri 27/1110:51 a.m. -
1 stop10h 43m
Deal found 26/10C$ 656
Wed 25/116:10 a.m. -
3 stops19h 57m
Wed 2/128:46 p.m. -
3 stops23h 20m
Deal found 28/10C$ 660
Mon 16/115:45 p.m. -
2 stops20h 57m
Wed 25/1111:59 p.m. -
1 stop14h 46m
Deal found 26/10C$ 667
Mon 16/119:15 a.m. -
1 stop25h 14m
Tue 24/1110:29 p.m. -
2 stops23h 11m
Deal found 26/10C$ 669
Thu 10/129:10 a.m. -
2 stops12h 35m
Thu 17/126:58 p.m. -
2 stops16h 12m
Deal found 26/10C$ 678
Tue 24/116:10 a.m. -
2 stops19h 57m
Tue 1/1210:36 p.m. -
3 stops23h 04m
Deal found 26/10C$ 684

Find flight deals from Ottawa to Denver

Round-trip from

C$ 607

One-way from

C$ 315

Popular in

January

Cheapest in

April

Average price

C$ 1,067
1/12-8/12
  • 1/12-8/12
  • 3 total stops
  • 50h 56m total
  • Ottawa to Denver
Search Deals
26/2-31/12
  • 26/2-31/12
  • 2 total stops
  • 25h 11m total
  • Ottawa to Denver
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 44 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

Fri 26/2

10:20 a.m.-9:31 a.m.

2 stops25h 11m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 315

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 14/12

5:30 a.m.-5:49 p.m.

3 stops38h 19m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 320

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 1/3

8:40 a.m.-7:08 a.m.

3 stops24h 28m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 323

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Thu 10/12

3:15 p.m.-6:29 a.m.

2 stops41h 14m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 336

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sat 12/12

6:10 a.m.-11:47 p.m.

2 stops19h 37m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 341

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Sun 22/11

8:40 a.m.-9:23 a.m.

2 stops26h 43m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 361
Quickest round-trip

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Wed 27/1

7:00 a.m.-7:49 p.m.

2 stops14h 49m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 364

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Wed 25/11

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

2 stops17h 27m

Denver Intl

Wed 2/12

8:07 p.m.-10:06 p.m.

3 stops23h 59m

C$ 687

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Tue 24/11

7:00 a.m.-12:07 a.m.

3 stops19h 07m

Denver Intl

Tue 1/12

10:36 p.m.-11:40 p.m.

3 stops23h 04m

C$ 712

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 14/12

8:40 a.m.-11:47 p.m.

2 stops17h 07m

Denver Intl

Mon 21/12

8:54 a.m.-1:40 a.m.

2 stops14h 46m

C$ 789

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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$ 786). Flying from Ottawa to Denver in January is currently the most expensive (average of C$ 1,267). 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 below average for this route at the moment.

Ottawa to Denver flights typically cost between C$ 926 and C$ 934 in December.
The cheapest round-trip price found within the last 5 days was C$ 607 on Multiple Airlines (1 Dec-8 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
7.3
Good
10,454 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.3

Crew

8.1

Food

6.7

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
7.3
Good
10,454 reviews
United Airlines
7.3
Good
10,454 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.3

Crew

8.1

Food

6.7

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
11,832 reviews
United Airlines
7.3
Good
10,454 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.3

Crew

8.1

Food

6.7

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

  • 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$ 783 on this airline. An additional option worth looking into is Air Canada, starting at C$ 785. You may be able to fly from Ottawa to Denver for 15% 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$ 786). Flying from Ottawa to Denver in January is currently the most expensive (average of C$ 1,267). 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$ 783AverageC$ 852FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 785AverageC$ 892FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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