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Cheap flights from Ottawa to Colorado from C$ 223

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — DEN
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ottawa to Colorado

Keep the following information in mind while searching for Ottawa to Colorado flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 349

One-way from

C$ 223

Popular in

May

Cheapest in

September

Average price

C$ 434
Air Canada
  • Air Canada
  • 20/10-23/10
  • 2 total stops
  • 22h 16m total
  • Ottawa to Colorado
Search Deals
WestJet
  • WestJet
  • 5/10
  • 2 total stops
  • 20h 09m total
  • Ottawa to Colorado
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Ottawa to Colorado

Cheapest flights from Ottawa to Colorado
Explore the most affordable flight options available from Ottawa to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Mon 20/105:25 p.m.YOW - DEN
1 stop15h 17mMultiple Airlines
Thu 23/1011:15 a.m.DEN - YOW
1 stop6h 59mMultiple Airlines
Deal found 9/9C$ 349
Thu 9/108:35 a.m.YOW - DEN
1 stop9h 54mAir Canada
Tue 14/105:30 p.m.DEN - YOW
1 stop6h 04mAir Canada
Deal found 9/9C$ 369
Wed 15/105:50 p.m.YOW - DEN
1 stop7h 25mUnited Airlines
Sat 25/107:48 a.m.DEN - YOW
1 stop7h 18mUnited Airlines
Deal found 10/9C$ 371
Wed 8/105:50 p.m.YOW - DEN
1 stop7h 25mUnited Airlines
Wed 15/1011:59 p.m.DEN - YOW
1 stop7h 59mUnited Airlines
Deal found 9/9C$ 378
Wed 8/105:15 a.m.YOW - DEN
1 stop6h 49mAir Canada
Wed 15/106:05 p.m.DEN - YOW
1 stop12h 18mAir Canada
Deal found 9/9C$ 394
Fri 24/107:50 p.m.YOW - DEN
1 stop16h 14mAir Canada
Fri 31/101:25 p.m.DEN - YOW
1 stop7h 43mAir Canada
Deal found 9/9C$ 417
Thu 9/106:25 a.m.YOW - DEN
1 stop7h 33mAir Canada
Mon 13/107:48 p.m.DEN - YOW
1 stop10h 35mAir Canada
Deal found 9/9C$ 424
Wed 8/104:25 p.m.YOW - DEN
1 stop17h 50mMultiple Airlines
Wed 15/1010:29 p.m.DEN - YOW
2 stops23h 53mMultiple Airlines
Deal found 9/9C$ 431
Thu 2/106:25 a.m.YOW - DEN
2 stops12h 10mAir Canada
Wed 8/105:36 p.m.DEN - YOW
1 stop5h 58mAir Canada
Deal found 9/9C$ 441
Fri 24/106:00 a.m.YOW - DEN
2 stops19h 10mMultiple Airlines
Thu 30/1012:16 a.m.DEN - YOW
1 stop14h 57mMultiple Airlines
Deal found 9/9C$ 445
Sat 4/1011:55 a.m.YOW - COS
2 stops11h 59mUnited Airlines
Sat 11/106:20 p.m.COS - YOW
2 stops13h 38mUnited Airlines
Deal found 10/9C$ 758
Mon 29/1210:30 a.m.YOW - COS
2 stops11h 46mUnited Airlines
Thu 1/19:23 a.m.COS - YOW
2 stops12h 31mUnited Airlines
Deal found 10/9C$ 999

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Colorado 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 11 September 2025.
Use the filters below to find and compare flights from Ottawa to Colorado that are best for you.

Fly from

Ottawa

Fly to

Colorado

Route

Depart

Return

Price

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Mon 20/10

5:25 p.m.-6:42 a.m.

1 stop15h 17m

Denver Intl

Thu 23/10

11:15 a.m.-8:14 p.m.

1 stop6h 59m

C$ 349

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 9/10

8:35 a.m.-4:29 p.m.

1 stop9h 54m

Denver Intl

Tue 14/10

5:30 p.m.-1:34 a.m.

1 stop6h 04m

C$ 369

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 15/10

5:50 p.m.-11:15 p.m.

1 stop7h 25m

Denver Intl

Sat 25/10

7:48 a.m.-5:06 p.m.

1 stop7h 18m

C$ 371

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 8/10

5:50 p.m.-11:15 p.m.

1 stop7h 25m

Denver Intl

Wed 15/10

11:59 p.m.-9:58 a.m.

1 stop7h 59m

C$ 378

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 8/10

4:25 p.m.-8:15 a.m.

1 stop17h 50m

Denver Intl

Wed 15/10

10:29 p.m.-12:22 a.m.

2 stops23h 53m

C$ 394

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 8/10

5:15 a.m.-10:04 a.m.

1 stop6h 49m

Denver Intl

Wed 15/10

6:05 p.m.-8:23 a.m.

1 stop12h 18m

C$ 394

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 19/2

2:50 p.m.-7:55 p.m.

1 stop7h 05m

Denver Intl

Tue 24/2

7:05 p.m.-6:43 a.m.

1 stop9h 38m

C$ 414

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 24/10

7:50 p.m.-10:04 a.m.

1 stop16h 14m

Denver Intl

Fri 31/10

1:25 p.m.-11:08 p.m.

1 stop7h 43m

C$ 417

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 9/10

6:25 a.m.-11:58 a.m.

1 stop7h 33m

Denver Intl

Mon 13/10

7:48 p.m.-8:23 a.m.

1 stop10h 35m

C$ 424

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 3/3

7:45 a.m.-5:44 p.m.

1 stop11h 59m

Denver Intl

Wed 4/3

11:15 a.m.-7:22 p.m.

1 stop6h 07m

C$ 431

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 26 results
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Best time to book a flight from Ottawa to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Ottawa 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 Ottawa to Colorado

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

Currently, August is the cheapest month in which you can book a flight from Ottawa to Colorado (average of C$ 320). Flying from Ottawa to Colorado in December is currently the most expensive (average of C$ 484). 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 YOW to CO?

Find hourly flight availability from Ottawa to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

When flying from Ottawa to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated 11 September 2025.
Get a feel of what it's like to fly with United Airlines,WestJet, andAir Canada from Ottawa to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
WestJet
7.2
Good
3,091 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to Colorado?

    For a flight from Ottawa to Colorado, you will be flying from Ottawa. Ottawa (YOW) is just 10.6 km from the centre of the city.

  • How long is the flight from Ottawa to Colorado?

    A quick flight from Ottawa to Colorado can take about 7h 25m. Air Canada provides one of the quickest options available for as low as C$ 371. The distance from Ottawa to Colorado is about 2435 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Ottawa to Colorado one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as C$ 223. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from Ottawa to Colorado for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ottawa to Colorado (average of C$ 320). Flying from Ottawa to Colorado in December is currently the most expensive (average of C$ 484). 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

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Alternative routes for Ottawa to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Ottawa to Colorado

Discover the top 3 airlines that operate flights from Ottawa to Colorado. 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 305AverageC$ 857FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 330AverageC$ 478FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 367AverageC$ 640FlexibilityNo 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 Ottawa to Colorado?

Cheapflights helps you search for flights from Ottawa to Colorado via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Colorado?

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 Ottawa to Colorado.

Can Cheapflights find flights from Ottawa to Colorado with no change fees?

Need flexible booking options for your flight to Colorado from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Colorado become cheaper?

Of course! You can now track prices for flights from Ottawa to Colorado and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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