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$110+ Cheap flights from Colorado to Ontario

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YYZ
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Colorado to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) to Ontario (CAON). 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 November 21, 2024.

Find flight deals from Colorado to Ontario

Cheapest flights from Colorado to Ontario
Explore the most affordable flight options available from Colorado to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Wed 12/187:05 pmDEN - YYZ
2 stops16h 50mMultiple Airlines
Tue 1/77:25 pmYYZ - DEN
1 stop16h 04mMultiple Airlines
Deal found 11/20$293
This Trip.com deal was found by Cheapflights users on 11/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:00 amDEN - YUL
2 stops23h 58mMultiple Airlines
Tue 12/175:35 pmYUL - DEN
1 stop12h 19mMultiple Airlines
Deal found 11/20$298
This United deal was found by Cheapflights users on 11/19. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/237:20 pmDEN - YOW
1 stop13h 11mMultiple Airlines
Mon 11/255:45 amYOW - DEN
1 stop6h 50mMultiple Airlines
Deal found 11/19$340
This Air Canada deal was found by Cheapflights users on 11/20. 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 12/25:40 pmDEN - YOW
1 stop5h 57mAir Canada
Sun 12/85:30 amYOW - DEN
1 stop6h 58mAir Canada
Deal found 11/20$347
This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/238:25 pmDEN - YOW
1 stop12h 06mUnited Airlines
Mon 11/259:45 amYOW - DEN
2 stops12h 00mUnited Airlines
Deal found 11/19$360
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 11/297:44 pmDEN - YTZ
1 stop17h 53mMultiple Airlines
Wed 12/1110:20 amYTZ - DEN
1 stop24h 45mMultiple Airlines
Deal found 11/20$398
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:50 amDEN - YUL
1 stop14h 00mAmerican Airlines
Wed 1/87:14 amYUL - DEN
2 stops12h 33mAmerican Airlines
Deal found 11/20$504
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/105:30 pmDEN - YUL
1 stop15h 01mDelta
Tue 12/176:05 amYUL - DEN
1 stop16h 29mDelta
Deal found 11/20$531
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/127:00 amDEN - YYZ
1 stop8h 35mAmerican Airlines
Wed 12/181:14 pmYYZ - DEN
1 stop11h 22mAmerican Airlines
Deal found 11/20$535
This Kiwi.com deal was found by Cheapflights users on 11/21. 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.
Thu 12/122:23 pmDEN - YUL
1 stop7h 18mWestJet
Sun 12/156:00 amYUL - DEN
1 stop6h 24mWestJet
Deal found 11/21$565
This United Airlines deal was found by Cheapflights users on 11/21. 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.
Sat 12/71:00 pmCOS - YYZ
1 stop8h 06mUnited Airlines
Fri 12/202:45 pmYYZ - COS
1 stop9h 18mUnited Airlines
Deal found 11/21$572
This Air Canada deal was found by Cheapflights users on 11/20. 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 11/297:00 pmDEN - YYZ
1 stop15h 12mAir Canada
Wed 12/114:10 pmYYZ - DEN
Nonstop3h 56mAir Canada
Deal found 11/20$580

Find flights from Colorado to Ontario within your budget

Customize your flight search to find flights from Colorado to Ontario 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 1/13

7:50 pm-6:46 am

1 stop8h 56m

Toronto Pearson Intl

Thu 1/16

1:50 pm-1:24 am

2 stops13h 34m

$276

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Tue 12/10

7:00 am-8:58 am

2 stops23h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 12/17

5:35 pm-3:54 am

1 stop12h 19m

$298

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Tue 1/28

12:54 pm-9:17 pm

1 stop6h 23m

Montreal Pierre Elliott Trudeau Intl

Sun 2/2

6:00 am-11:34 am

1 stop7h 34m

$336

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Mon 12/2

5:40 pm-1:37 am

1 stop5h 57m

Ottawa

Sun 12/8

5:30 am-10:28 am

1 stop6h 58m

$347

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Tue 1/28

8:57 am-8:53 pm

2 stops9h 56m

Montreal Pierre Elliott Trudeau Intl

Sun 2/2

8:05 am-2:19 pm

1 stop8h 14m

$372

DenverToronto

DEN - YTZ

DENYTZ

Denver Intl

Sat 1/4

9:50 am-8:17 pm

1 stop8h 27m

Toronto Island

Sat 1/11

2:15 pm-9:29 am

2 stops21h 14m

$412

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 2/14

7:00 am-2:55 pm

1 stop29h 55m

Toronto Pearson Intl

Sun 2/16

4:10 pm-11:49 pm

1 stop9h 39m

$415

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sun 12/1

10:42 pm-5:00 pm

1 stop16h 18m

Ottawa

Sun 12/8

7:00 pm-7:51 am

2 stops38h 51m

$443

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Wed 5/14

12:15 pm-12:43 am

1 stop10h 28m

Montreal Pierre Elliott Trudeau Intl

Wed 5/21

6:20 pm-11:27 am

2 stops43h 07m

$458

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Sat 1/11

6:37 am-3:25 pm

1 stop6h 48m

Montreal Pierre Elliott Trudeau Intl

Sun 1/26

2:20 pm-8:24 pm

1 stop8h 04m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 46 results
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Best time to book a flight from Colorado to Ontario

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

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of $242). Flying from Colorado to Region of Ontario in July is currently the most expensive (average of $359). 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 CO to ON?

Find hourly flight availability from Colorado to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

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

Weekly flight availability from Colorado to Region of Ontario

Explore weekly flight availability from Colorado to Ontario. 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 November 21, 2024.

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

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Region of Ontario, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated November 21, 2024.
Read through reviews of airlines operating flights from Colorado to Ontario, such as Alaska Airlines, American Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Alaska Airlines
8.0
Very good
9,458 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Delta
8.0
Very good
8,758 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

United Airlines
7.4
Good
9,172 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

WestJet
7.3
Good
2,810 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Related info for your journey

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $149. However, be on the lookout for offers from Air Canada and American Airlines, as they are both options that can get you from Colorado to Region of Ontario for a low price.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of $242). Flying from Colorado to Region of Ontario in July is currently the most expensive (average of $359). 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 Colorado to Ontario

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Top 2 airlines flying from Colorado to Ontario

Discover the top 2 airlines that operate flights from Colorado to Ontario. 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$130Average$455FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$160Average$555FlexibilityNo cancel feeOn-time69%
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