HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$181+ Cheap flights from Ottawa (YOW) to Colorado

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — DEN
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ottawa to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 20, 2025.

Round-trip from

$306
(Air Canada)

One-way from

$181
(Trip.com)

Popular in

May

Cheapest in

September

Average price

$388
From Ottawa to Colorado
Search Deals
One-way flight from Ottawa to Colorado
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 20, 2025.

This Air Canada deal was found by Cheapflights users on 8/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:00 amYOW - DEN
1 stop6h 21mAir Canada
Fri 9/57:05 pmDEN - YOW
1 stop11h 18mAir Canada
Deal found 8/17$306
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:55 amYOW - DEN
2 stops28h 54mMultiple Airlines
Fri 9/2612:15 pmDEN - YOW
1 stop10h 25mMultiple Airlines
Deal found 8/18$358
This United deal was found by Cheapflights users on 8/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:25 pmYOW - DEN
1 stop8h 05mMultiple Airlines
Wed 10/85:30 pmDEN - YOW
1 stop6h 04mMultiple Airlines
Deal found 8/17$360
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:25 amYOW - DEN
1 stop9h 53mAir Canada
Fri 10/246:05 pmDEN - YOW
1 stop10h 02mAir Canada
Deal found 8/18$376
This United deal was found by Cheapflights users on 8/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:33 amYOW - DEN
1 stop6h 02mMultiple Airlines
Sun 9/217:05 pmDEN - YOW
1 stop11h 18mMultiple Airlines
Deal found 8/18$387
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:35 amYOW - DEN
1 stop9h 43mAir Canada
Wed 10/85:30 pmDEN - YOW
1 stop6h 04mAir Canada
Deal found 8/18$388
This Air Canada deal was found by Cheapflights users on 8/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:15 amYOW - DEN
1 stop6h 49mAir Canada
Fri 10/105:30 pmDEN - YOW
1 stop6h 04mAir Canada
Deal found 8/19$389
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 10/95:25 pmYOW - DEN
1 stop15h 16mUnited Airlines
Mon 10/1311:59 pmDEN - YOW
1 stop7h 12mUnited Airlines
Deal found 8/18$418
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 8/259:50 amYOW - COS
2 stops12h 49mUnited Airlines
Mon 9/16:00 amCOS - YOW
1 stop13h 35mUnited Airlines
Deal found 8/18$896
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:00 amYOW - COS
2 stops10h 45mAir Canada
Mon 9/13:45 pmCOS - YOW
2 stops7h 49mAir Canada
Deal found 8/18$1,081

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 2,558,603 searches. Data last updated August 20, 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

Sun 8/31

6:00 am-10:21 am

1 stop6h 21m

Denver Intl

Fri 9/5

7:05 pm-8:23 am

1 stop11h 18m

$306

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 9/19

5:55 am-8:49 am

2 stops28h 54m

Denver Intl

Fri 9/26

12:15 pm-12:40 am

1 stop10h 25m

$358

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 10/2

5:25 pm-11:30 pm

1 stop8h 05m

Denver Intl

Wed 10/8

5:30 pm-1:34 am

1 stop6h 04m

$360

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 10/21

9:25 am-5:18 pm

1 stop9h 53m

Denver Intl

Fri 10/24

6:05 pm-6:07 am

1 stop10h 02m

$376

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 9/19

5:25 pm-6:41 am

1 stop15h 16m

Denver Intl

Fri 9/26

11:59 pm-2:13 pm

1 stop12h 14m

$387

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 9/16

6:33 am-10:35 am

1 stop6h 02m

Denver Intl

Sun 9/21

7:05 pm-8:23 am

1 stop11h 18m

$387

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 10/2

9:35 am-5:18 pm

1 stop9h 43m

Denver Intl

Wed 10/8

5:30 pm-1:34 am

1 stop6h 04m

$388

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 10/3

5:55 am-8:49 am

2 stops28h 54m

Denver Intl

Fri 10/10

12:15 pm-12:40 am

1 stop10h 25m

$388

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 10/3

5:15 am-10:04 am

1 stop6h 49m

Denver Intl

Fri 10/10

5:30 pm-1:34 am

1 stop6h 04m

$389

OttawaColorado Springs

YOW - COS

YOWCOS

Ottawa

Mon 8/25

9:50 am-8:39 pm

2 stops12h 49m

Colorado Springs

Mon 9/1

6:00 am-9:35 pm

1 stop13h 35m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 19 results
1
2

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, October is the cheapest month in which you can book a flight from Ottawa to Colorado (average of $197). Flying from Ottawa to Colorado in March is currently the most expensive (average of $278). 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 August 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to Colorado as you normally would.

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 August 20, 2025.
Peruse reviews from past customers who have flown with United Airlines and Air Canada from Ottawa to Colorado to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

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
8,928 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

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?

    Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly out of when you book flights from Ottawa to Colorado.

  • How long is the flight from Ottawa to Colorado?

    A quick flight from Ottawa to Colorado can take about 6h 21m. Air Canada provides one of the quickest options available for as low as $306. The distance from Ottawa to Colorado is about 1513 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, October is the cheapest month in which you can book a flight from Ottawa to Colorado (average of $197). Flying from Ottawa to Colorado in March is currently the most expensive (average of $278). 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

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.

Alternative routes for Ottawa to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Newark flights
Toronto Island to Newark flights
Pearson Intl to LaGuardia flights
Pearson Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pearson Intl to Fort Lauderdale flights
Pearson Intl to Las Vegas flights
Pearson Intl to Miami flights
Pierre Elliott Trudeau Intl to Newark flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Pearson Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to Miami flights
Pearson Intl to Orlando flights
Pearson Intl to San Francisco flights
Pearson Intl to Dallas/Fort Worth flights
Pearson Intl to Boston flights
Pearson Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Orlando flights
Pearson Intl to Nashville flights
Pearson Intl to Hobby flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Toronto Island to Fort Lauderdale flights
Pearson Intl to Atlanta flights
Pearson Intl to George Bush Intcntl flights
Toronto Island to Boston flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Toronto Island to Orlando flights
Pearson Intl to Seattle flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pearson Intl to Tampa flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pearson Intl to Reagan-National flights
Pearson Intl to Dulles Intl flights
Pearson Intl to Sky Harbor Intl flights
Pearson Intl to San Diego flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Ottawa to Fort Lauderdale flights
Toronto Island to Midway flights
Pearson Intl to Midway flights
Pearson Intl to Denver flights
Pierre Elliott Trudeau Intl to Boston flights
Pierre Elliott Trudeau Intl to Nashville flights
Pearson Intl to Charlotte flights
Pearson Intl to Honolulu flights
Pearson Intl to West Palm Beach flights
Pearson Intl to Austin flights
Pearson Intl to Philadelphia flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights

Top 2 airlines flying from Ottawa to Colorado

Discover the top 2 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 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$234Average$332FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$254Average$465FlexibilityNo cancel feeOn-time67%

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.