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Cheap flights from Ontario to Colorado from C$ 190

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DEN
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Ontario to Colorado

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Colorado (USCO). 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 17 January 2025.

Round-trip from

C$ 420

One-way from

C$ 190
United Airlines
  • United Airlines
  • 18/2-26/2
  • 2 total stops
  • 15h 03m total
  • Ontario to Colorado
Search Deals
24/2
  • 24/2
  • 1 total stop
  • 9h 56m total
  • Ontario to Colorado
Search Deals

Find flight deals from Ontario to Colorado

Cheapest flights from Ontario to Colorado
Explore the most affordable flight options available from Ontario to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Tue 18/28:05 a.m.YUL - COS
1 stop8h 26mUnited Airlines
Wed 26/212:40 p.m.COS - YUL
1 stop6h 37mUnited Airlines
Deal found 15/1C$ 420
Thu 6/24:00 p.m.YOW - DEN
2 stops19h 27mMultiple Airlines
Tue 11/210:29 p.m.DEN - YOW
1 stop16h 16mMultiple Airlines
Deal found 16/1C$ 425
Wed 12/28:05 a.m.YUL - COS
1 stop10h 28mAir Canada
Mon 17/27:30 a.m.COS - YUL
1 stop7h 38mAir Canada
Deal found 15/1C$ 430
Mon 3/28:00 p.m.YYZ - DEN
1 stop15h 27mMultiple Airlines
Tue 4/212:13 a.m.DEN - YYZ
1 stop12h 15mMultiple Airlines
Deal found 16/1C$ 431
Tue 4/211:20 a.m.YUL - COS
2 stops11h 45mDelta
Tue 11/26:00 a.m.COS - YUL
2 stops8h 19mDelta
Deal found 15/1C$ 437
Wed 19/26:45 a.m.YUL - DEN
2 stops13h 21mMultiple Airlines
Mon 24/210:44 p.m.DEN - YUL
1 stop15h 51mMultiple Airlines
Deal found 16/1C$ 464
Thu 20/27:30 a.m.YUL - COS
2 stops18h 22mAmerican Airlines
Sun 23/24:50 p.m.COS - YUL
2 stops17h 30mAmerican Airlines
Deal found 15/1C$ 477
Wed 19/211:20 a.m.YTZ - DEN
1 stop10h 52mMultiple Airlines
Sun 23/210:44 p.m.DEN - YTZ
2 stops18h 09mMultiple Airlines
Deal found 16/1C$ 507
Thu 17/711:40 a.m.YYZ - DEN
1 stop8h 35mSun Country Air
Thu 31/710:20 a.m.DEN - YYZ
1 stop5h 10mSun Country Air
Deal found 16/1C$ 520
Thu 6/27:45 a.m.YYZ - DEN
2 stops17h 36mFrontier
Wed 12/211:57 a.m.DEN - YYZ
2 stops20h 18mFrontier
Deal found 16/1C$ 540
Sun 7/96:45 a.m.YUL - DEN
2 stops14h 03mWestJet
Mon 15/912:15 p.m.DEN - YUL
1 stop10h 26mWestJet
Deal found 16/1C$ 561
Sat 22/27:14 a.m.YUL - DEN
2 stops17h 42mAmerican Airlines
Mon 24/27:00 a.m.DEN - YUL
2 stops13h 45mAmerican Airlines
Deal found 16/1C$ 568

Find flights from Ontario to Colorado within your budget

Customize your flight search to find flights from Ontario 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 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Tue 18/2

8:05 a.m.-2:31 p.m.

1 stop8h 26m

Colorado Springs

Wed 26/2

12:40 p.m.-9:17 p.m.

1 stop6h 37m

C$ 420

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 6/2

4:00 p.m.-9:27 a.m.

2 stops19h 27m

Denver Intl

Tue 11/2

10:29 p.m.-4:45 p.m.

1 stop16h 16m

C$ 425

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

8:05 a.m.-4:33 p.m.

1 stop10h 28m

Colorado Springs

Mon 17/2

7:30 a.m.-5:08 p.m.

1 stop7h 38m

C$ 430

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 3/2

8:00 p.m.-9:27 a.m.

1 stop15h 27m

Denver Intl

Tue 4/2

12:13 a.m.-2:28 p.m.

1 stop12h 15m

C$ 431

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Tue 18/2

12:52 p.m.-9:05 p.m.

1 stop10h 13m

Colorado Springs

Fri 21/2

6:00 a.m.-4:58 p.m.

1 stop8h 58m

C$ 443

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Wed 19/2

6:45 a.m.-6:06 p.m.

2 stops13h 21m

Denver Intl

Mon 24/2

10:44 p.m.-4:35 p.m.

1 stop15h 51m

C$ 464

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Thu 20/2

7:30 a.m.-11:52 p.m.

2 stops18h 22m

Colorado Springs

Sun 23/2

4:50 p.m.-12:20 p.m.

2 stops17h 30m

C$ 477

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Wed 19/2

11:20 a.m.-8:12 p.m.

1 stop10h 52m

Denver Intl

Sun 23/2

10:44 p.m.-6:53 p.m.

2 stops18h 09m

C$ 507

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 6/2

7:45 a.m.-11:21 p.m.

2 stops17h 36m

Denver Intl

Wed 12/2

11:57 a.m.-10:15 a.m.

2 stops20h 18m

C$ 540

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Sat 22/2

7:14 a.m.-8:33 p.m.

1 stop15h 19m

Denver Intl

Mon 24/2

4:17 p.m.-1:35 p.m.

1 stop19h 18m

C$ 568

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/1

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Colorado

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

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

What is the cheapest month to book a flight from Region of Ontario to Colorado?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Colorado (average of C$ 320). Flying from Region of Ontario 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 ON to CO?

Find hourly flight availability from Ontario 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 17 January 2025.

When flying from Region of Ontario 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.

Weekly flight availability from Region of Ontario to Colorado

Explore weekly flight availability from Ontario to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 January 2025.

The most flights from CAON to USCO are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 13.0 - 58.0 mm per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Colorado when rainfall is around 13.0 mm.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 17 January 2025.
See what other customers who have flown with WestJet, Air Canada and American Airlines from Ontario to Colorado have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,681 reviews
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,511 reviews
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,965 reviews
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Brussels Airlines
7.4
Good
349 reviews
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,681 reviews
Check prices

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Ontario to Colorado. 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 to fly from Region of Ontario to Colorado one-way?

    The cheapest airlines for a one-way flight from Region of Ontario to Colorado are United Airlines (C$ 249), Alaska Airlines (C$ 295), and Air Canada (C$ 341).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario 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 Region of Ontario to Colorado?

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Colorado (average of C$ 320). Flying from Region of Ontario 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 Ontario 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 Ontario to Colorado

Discover the top 3 airlines that operate flights from Ontario 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 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 251AverageC$ 519FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 327AverageC$ 700FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 353AverageC$ 799FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 Ontario to Colorado?

Cheapflights makes it easy to find Ontario to Colorado flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Colorado from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Colorado, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Ontario to Colorado 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.

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