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$146+ Cheap flights from Toronto (YTO) 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — DEN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Toronto to Colorado

Keep the following information in mind while searching for Toronto to Colorado flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$346
(Kiwi.com)

One-way from

$146
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$475

Good round-trip deal

$424 or less

Good one-way deal

$265 or less
Provider with most accurate pricing for Toronto (YTO)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Toronto (YTO)-Denver Intl flights.
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From Toronto (YTO) to Colorado
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One-way flight from Toronto (YTO) to Colorado
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Toronto (YTO) to Colorado.
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Price to beat on a one-way flight from Toronto (YTO) to Colorado.
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Find flight deals from Toronto to Colorado

Cheapest flights from Toronto to Colorado
Explore the most affordable flight options available from Toronto to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/127:55 pmYYZ - DEN
1 stop10h 03mMultiple Airlines
Wed 1/74:25 pmDEN - YYZ
1 stop13h 30mMultiple Airlines
Deal found 10/28$346
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Tue 12/94:45 pmYYZ - DEN
1 stop27h 18mAlaska Airlines
Tue 1/68:22 pmDEN - YYZ
1 stop17h 13mAlaska Airlines
Deal found 10/28$350
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Sun 12/148:00 pmYYZ - DEN
1 stop9h 58mMultiple Airlines
Tue 1/611:59 pmDEN - YYZ
1 stop9h 47mMultiple Airlines
Deal found 10/28$351
This Flightnetwork deal was found by Cheapflights users on 10/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2012:30 pmYTZ - DEN
1 stop9h 25mAir Canada
Wed 11/2611:15 amDEN - YTZ
1 stop8h 20mAir Canada
Deal found 10/28$352
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Mon 11/177:55 pmYYZ - DEN
1 stop10h 04mMultiple Airlines
Mon 11/249:44 amDEN - YYZ
2 stops19h 14mMultiple Airlines
Deal found 10/28$352
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/117:55 pmYYZ - DEN
1 stop10h 03mMultiple Airlines
Tue 1/611:59 pmDEN - YYZ
1 stop9h 47mMultiple Airlines
Deal found 10/28$353
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Tue 11/2512:40 pmYYZ - DEN
1 stop17h 18mMultiple Airlines
Tue 12/210:50 amDEN - YYZ
2 stops35h 21mMultiple Airlines
Deal found 10/27$354
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 12/11:30 pmYYZ - DEN
2 stops16h 28mMultiple Airlines
Sun 12/75:35 pmDEN - YYZ
1 stop10h 45mMultiple Airlines
Deal found 10/27$355
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 12/197:55 pmYYZ - DEN
1 stop10h 03mMultiple Airlines
Tue 1/611:59 pmDEN - YYZ
1 stop12h 17mMultiple Airlines
Deal found 10/27$356
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 12/84:45 pmYYZ - DEN
1 stop9h 14mAlaska Airlines
Tue 1/66:02 amDEN - YYZ
1 stop31h 33mAlaska Airlines
Deal found 10/28$358
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/129:15 amYTZ - DEN
1 stop12h 44mMultiple Airlines
Thu 11/1312:59 amDEN - YTZ
2 stops15h 56mMultiple Airlines
Deal found 10/28$359
This Flightnetwork deal was found by Cheapflights users on 10/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/201:00 pmYYZ - DEN
1 stop8h 55mAir Canada
Wed 11/2611:15 amDEN - YYZ
1 stop8h 29mAir Canada
Deal found 10/28$359

Cheapflights Fare Finder

 
Customize your flight search to find flights from Toronto 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 October 29, 2025.
Use the filters below to find and compare flights from Toronto to Colorado that are best for you.

Fly from

Toronto

Fly to

Colorado

Route

Depart

Return

Price

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Thu 11/20

12:30 pm-7:55 pm

1 stop9h 25m

Denver Intl

Wed 11/26

11:15 am-9:35 pm

1 stop8h 20m

$352

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Wed 11/12

9:15 am-7:59 pm

1 stop12h 44m

Denver Intl

Thu 11/13

12:59 am-6:55 pm

2 stops15h 56m

$359

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Fri 11/14

9:15 am-2:16 pm

1 stop7h 01m

Denver Intl

Mon 11/17

8:05 am-6:57 pm

1 stop8h 52m

$359

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Mon 11/24

9:15 am-5:22 pm

1 stop10h 07m

Denver Intl

Mon 12/1

8:45 pm-1:42 pm

1 stop14h 57m

$361

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 12/8

4:45 pm-6:03 pm

1 stop27h 18m

Denver Intl

Fri 1/9

11:49 am-3:35 pm

2 stops25h 46m

$368

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 12/8

4:45 pm-11:59 pm

1 stop9h 14m

Denver Intl

Tue 1/6

7:20 am-3:35 pm

2 stops30h 15m

$368

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Tue 12/2

7:40 pm-10:18 am

2 stops16h 38m

Denver Intl

Thu 12/4

8:45 pm-1:42 pm

1 stop14h 57m

$381

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Tue 11/25

12:30 pm-7:55 pm

1 stop9h 25m

Denver Intl

Tue 12/2

11:15 am-7:55 pm

1 stop6h 40m

$388

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Fri 1/9

4:10 pm-6:10 pm

Nonstop4h 00m

Denver Intl

Mon 1/12

5:30 pm-10:41 pm

Nonstop3h 11m

$395

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Wed 2/4

12:30 pm-7:55 pm

1 stop9h 25m

Denver Intl

Wed 2/11

11:15 am-9:35 pm

1 stop8h 20m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

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

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

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

Currently, December is the cheapest month in which you can book a flight from Toronto to Colorado (average of $220). Flying from Toronto to Colorado in October is currently the most expensive (average of $324). 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 YTO to CO?

Find hourly flight availability from Toronto 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 29, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 43% on flights from Toronto to Colorado by exploring options for tickets in the evening.

How much does it cost to fly round-trip from Toronto to Colorado?

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 29, 2025.
Read through reviews of airlines operating flights from Toronto to Colorado, such as United Airlines, WestJet, and Air Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
WestJet
7.2
Good
3,148 reviews
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,372 reviews
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

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

  • How long is the flight from Toronto to Colorado?

    Departing from Toronto to Colorado will take you 7h 38m. There are 1339 mi between Toronto and Colorado. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $230. However, be on the lookout for offers from United Airlines and WestJet, as they are both options that can get you from Toronto to Colorado for a low price.

  • What are the most popular routes from Toronto to Colorado?

    The most popular flight routes from Toronto to Colorado are Toronto Pearson Intl - Denver Intl, Toronto Island - Denver Intl and Toronto Pearson Intl - Aspen Pitkin County.

  • What are the most reliable airlines from Toronto to Colorado?

    The top 3 most reliable airlines when flying from Toronto to Colorado are United Airlines (67%), Air Canada (65%) and Brussels Airlines (62%).

  • What are the cheapest flights from Toronto to Colorado?

    Looking for the cheapest flight from Toronto to Colorado? While on average our users pay $500, our data indicates the cheapest price to be $232. The most popular route (Toronto Pearson Intl - Denver Intl), is priced around $235.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Toronto to Colorado (average of $220). Flying from Toronto to Colorado in October is currently the most expensive (average of $324). 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 Toronto 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 Toronto to Colorado

Discover the top 2 airlines that operate flights from Toronto 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$317Average$419FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$384Average$592FlexibilityNo cancel feeOn-time69%

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