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$162+ Cheap flights from Ontario 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DEN
Nov 5 — Nov 121
Tue 11/5
Tue 11/12
1 adult, Economy
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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 October 31, 2024.

This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 11/2112:21 pmYYZ - COS
1 stop10h 35mDelta
Wed 11/276:00 amCOS - YYZ
1 stop9h 00mDelta
Deal found 10/30$258
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 12/38:05 amYUL - COS
1 stop6h 11mUnited Airlines
Tue 12/109:00 amCOS - YUL
1 stop6h 19mUnited Airlines
Deal found 10/30$275
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/215:30 amYOW - DEN
1 stop6h 58mAir Canada
Sat 11/3011:25 amDEN - YOW
1 stop5h 33mAir Canada
Deal found 10/29$285
This American Airlines deal was found by Cheapflights users on 10/30. 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 12/35:30 pmYUL - COS
2 stops18h 31mAmerican Airlines
Tue 12/104:41 pmCOS - YUL
2 stops19h 03mAmerican Airlines
Deal found 10/30$289
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 11/138:00 pmYYZ - DEN
2 stops16h 24mMultiple Airlines
Sun 11/1711:59 pmDEN - YYZ
1 stop12h 01mMultiple Airlines
Deal found 10/30$329
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 11/132:35 pmYUL - DEN
2 stops15h 24mMultiple Airlines
Mon 11/1810:43 pmDEN - YUL
1 stop15h 52mMultiple Airlines
Deal found 10/31$330
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/131:10 pmYTZ - DEN
2 stops13h 31mMultiple Airlines
Mon 12/168:55 pmDEN - YTZ
1 stop15h 02mMultiple Airlines
Deal found 10/30$332
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/128:05 amYUL - COS
1 stop10h 31mAir Canada
Tue 11/198:30 amCOS - YUL
1 stop6h 38mAir Canada
Deal found 10/30$345
This American Airlines deal was found by Cheapflights users on 10/29. 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 12/177:14 amYUL - DEN
1 stop17h 50mAmerican Airlines
Mon 12/306:50 amDEN - YUL
1 stop14h 00mAmerican Airlines
Deal found 10/29$365
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/64:20 pmYYZ - DEN
1 stop9h 39mAlaska Airlines
Tue 12/104:56 pmDEN - YYZ
1 stop19h 59mAlaska Airlines
Deal found 10/30$372
This Air Canada deal was found by Cheapflights users on 10/31. 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 11/289:10 amYYZ - DEN
1 stop9h 30mAir Canada
Thu 12/511:15 amDEN - YYZ
Nonstop3h 12mAir Canada
Deal found 10/31$384
This Delta deal was found by Cheapflights users on 10/31. 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 12/36:30 amYYZ - DEN
1 stop8h 46mDelta
Tue 12/1010:31 amDEN - YYZ
1 stop10h 19mDelta
Deal found 10/31$400

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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 12/17

5:35 pm-3:54 am

1 stop12h 19m

$163

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 12/3

10:05 am-4:38 pm

1 stop8h 33m

$164

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Wed 11/20

11:25 am-8:56 pm

2 stops11h 31m

$169

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Wed 1/8

10:54 am-10:15 pm

2 stops13h 21m

$177

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 12/10

4:20 pm-11:49 am

2 stops21h 29m

$242

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Wed 12/4

8:05 am-10:35 am

Nonstop4h 30m

$276

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Mon 3/24

6:45 am-8:11 pm

2 stops15h 26m

$312

MontrealColorado Springs

YUL - COS

YULCOS

Montreal Pierre Elliott Trudeau Intl

Tue 11/19

8:05 am-12:16 pm

1 stop6h 11m

$172

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Fri 12/6

2:00 pm-12:41 am

2 stops12h 41m

$181

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Wed 11/27

4:10 pm-3:59 am

2 stops13h 49m

$183

Flights are sorted by cheapest first

Deals found on 10/30

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, October is the cheapest month in which you can book a flight from Region of Ontario to Colorado (average of $194). Flying from Region of Ontario to Colorado in March is currently the most expensive (average of $270). 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 October 31, 2024.

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.

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 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 October 31, 2024.
Read reviews from past customers who have flown Air Canada, WestJet and American Airlines from Ontario to Colorado. 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
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,420 reviews
Alaska Airlines
8.0
Very good
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,835 reviews
Alaska Airlines
8.0
Very good
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

Reviews

1 / 10

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

United Airlines
7.4
Good
9,240 reviews
Alaska Airlines
8.0
Very good
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

Reviews

1 / 10

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

WestJet
7.3
Good
2,804 reviews
Alaska Airlines
8.0
Very good
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

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
9,420 reviews

Comfort

7.9

Crew

8.6

Entertainment

7.1

Boarding

8.2

Overall

8.0

Food

7.2

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 Ontario to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Region of Ontario to Colorado for under $300 on Cheapflights?

    Yes, there are multiple flights from Region of Ontario to Colorado for under $300. The cheapest flight booked recently is on Multiple Airlines for just $255, but on average you can expect to pay $340.

  • Are there nonstop flights from Region of Ontario to Colorado for under $400 on Cheapflights?

    Cheapflights has at least 7 direct flights from Region of Ontario to Colorado under $400. A good price for a nonstop flight from Region of Ontario to Colorado is less than $566.

  • Are there last-minute flights available from Region of Ontario to Colorado for under $300?

    There are currently 17+ open flights from Region of Ontario to Colorado within the next 7 days for less than $300.

  • What are the cheapest airlines to fly from Region of Ontario to Colorado one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $164. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Region of Ontario to Colorado for a low price.

  • What does YYZ to DEN mean?

    This is defined as Toronto Pearson Intl Airport (YYZ) and Denver Intl Airport (DEN). Codes like Denver Intl Airport are often used to just call airports uniquely. Ready for more IATA code knowledge? These are related airports for your current travel destination: Colorado Springs Airport (COS), Aspen Pitkin County Airport (ASE), Grand Junction Regnl Airport (GJT), Vail Eagle County Airport (EGE), Durango La Plata County Airport (DRO).

  • Can I find deals for flights from Ontario to Colorado that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Colorado flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Colorado with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Colorado flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Ontario to Colorado that allow pets onboard?

    Many airlines flying from Ontario to Colorado offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Colorado?

    Yes, you can often find last-minute deals on Ontario to Colorado flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Region of Ontario to Colorado flight deals updated?

    The Region of Ontario to Colorado flight deals you see on this page were last updated on 10/31.

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

    Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Colorado (average of $194). Flying from Region of Ontario to Colorado in March is currently the most expensive (average of $270). 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 2 airlines flying from Ontario to Colorado

Discover the top 2 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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$254Average$570FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$266Average$520FlexibilityNo cancel feeOn-time69%
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