What is the cheapest airline that flies from Colorado to Ontario?

Sun Country Air, WestJet, and Delta are the most popular carriers operating from Colorado to Ontario

How many flights depart from Colorado to Region of Ontario on average per day?

14 flights are operational daily from Colorado to Region of Ontario as of May 2026. The most popular departure time for this route is 9:00AM, with 43% of flights per day taking off at noon.

How long is the flight from Colorado to Region of Ontario?

Average flight duration from Colorado to Region of Ontario depends on which airport you fly into and out of. Flying from Denver to Toronto Pearson Intl Airport is 3h 10m on average, while flying from Durango to Toronto Pearson Intl Airport is 5h 57m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

What airlines fly to Region of Ontario?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Region of Ontario from Colorado according to our data. Air Canada is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to Region of Ontario on average per week?

As of May 2026, 102 flights take off from Colorado and land in Region of Ontario each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

When did momondo last update prices for flights from Colorado to Ontario?

Prices for flights from Colorado to Ontario are updated daily.

How many operators does momondo search for flights from Colorado to Ontario?

As of May 2026, there are 4 operators available to choose from for flights from Colorado to Ontario.

How old do you have to be to fly from Colorado to Ontario?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Ontario.

What documentation or ID do you need to fly to Ontario?

The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$113 Cheap Flights from Colorado to Ontario in 2026

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:15 pm - 10:45 pm

DEN

YYZ

8h 30m

1 stop

5:20 pm - 11:20 am

YYZ

DEN

20h 00m

2 stops

$258WestJet

Fri, May 15 - Sun, May 17

12:15 pm - 10:45 pm

DEN

YYZ

8h 30m

1 stop

10:25 pm - 11:20 am

YYZ

DEN

14h 55m

1 stop

$277WestJet

Fri, May 15 - Tue, May 19

7:43 am - 4:00 pm

DEN

YTZ

6h 17m

1 stop

8:50 am - 11:54 pm

YTZ

DEN

17h 04m

1 stop

$337Multiple Airlines

Tue, Jun 23 - Sat, Jun 27

7:43 am - 4:00 pm

DEN

YTZ

6h 17m

1 stop

8:50 am - 11:54 pm

YTZ

DEN

17h 04m

1 stop

$359Multiple Airlines

Tue, Jun 23 - Tue, Jun 30

12:45 pm - 9:35 pm

COS

YOW

6h 50m

1 stop

6:25 am - 10:59 am

YOW

COS

6h 34m

1 stop

$430United Airlines

Tue, Aug 18 - Wed, Aug 19

12:45 pm - 9:35 pm

COS

YOW

6h 50m

1 stop

6:25 am - 10:59 am

YOW

COS

6h 34m

1 stop

$431United Airlines

Tue, Aug 18 - Wed, Aug 19

12:36 pm - 11:29 pm

COS

YYZ

8h 53m

1 stop

6:46 am - 6:40 pm

YYZ

COS

13h 54m

1 stop

$484American Airlines

Tue, Aug 11 - Sat, Aug 15

6:00 am - 5:19 pm

COS

YYZ

9h 19m

1 stop

6:30 am - 5:40 pm

YYZ

COS

13h 10m

2 stops

$509Delta

Mon, Jun 15 - Fri, Jun 19

8:14 am - 11:14 pm

COS

YYZ

13h 00m

2 stops

6:30 am - 5:40 pm

YYZ

COS

13h 10m

2 stops

$514Delta

Mon, Jun 15 - Fri, Jun 19

3:45 pm - 12:28 pm

COS

YUL

18h 43m

2 stops

1:03 pm - 10:24 pm

YUL

COS

11h 21m

2 stops

$517American Airlines

Wed, Jun 3 - Sat, Jun 6

Delta flights from Colorado to Region of Ontario

Our best Delta deals on Colorado to Region of Ontario flight tickets

Delta

Jun 15

COS6:00 amColorado Springs

9h 19m

1 stop

YYZ5:19 pmToronto Pearson Intl

Jun 19

YYZ6:30 amToronto Pearson Intl

13h 10m

2 stops

COS5:40 pmColorado Springs

$509

Delta

Jun 15

COS8:14 amColorado Springs

13h 00m

2 stops

YYZ11:14 pmToronto Pearson Intl

Jun 19

YYZ6:30 amToronto Pearson Intl

13h 10m

2 stops

COS5:40 pmColorado Springs

$514

Delta

May 28

COS1:55 pmColorado Springs

8h 03m

1 stop

YYZ11:58 pmToronto Pearson Intl

Jun 3

YYZ5:45 pmToronto Pearson Intl

6h 37m

1 stop

COS10:22 pmColorado Springs

$517

WestJet flights from Colorado to Region of Ontario

Our best WestJet deals on Colorado to Region of Ontario flight tickets

WestJet

May 15

DEN12:15 pmDenver Intl

8h 30m

1 stop

YYZ10:45 pmToronto Pearson Intl

May 19

YYZ10:25 pmToronto Pearson Intl

14h 55m

1 stop

DEN11:20 amDenver Intl

$277

WestJet

May 27

DEN12:15 pmDenver Intl

8h 30m

1 stop

YYZ10:45 pmToronto Pearson Intl

May 30

YYZ8:00 pmToronto Pearson Intl

17h 20m

1 stop

DEN11:20 amDenver Intl

$290

WestJet

Jun 5

DEN12:15 pmDenver Intl

9h 55m

1 stop

YYZ12:10 amToronto Pearson Intl

Jun 8

YYZ10:25 pmToronto Pearson Intl

14h 55m

1 stop

DEN11:20 amDenver Intl

$293

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 5/15

12:15 pm-10:45 pm

1 stop8h 30m

Toronto Pearson Intl

Sun 5/17

5:20 pm-11:20 am

2 stops20h 00m

$258

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 5/15

12:15 pm-10:45 pm

1 stop8h 30m

Toronto Pearson Intl

Tue 5/19

10:25 pm-11:20 am

1 stop14h 55m

$277

DenverToronto

DEN - YTZ

DENYTZ

Denver Intl

Tue 6/23

7:43 am-4:00 pm

1 stop6h 17m

Toronto Island

Sat 6/27

8:50 am-11:54 pm

1 stop17h 04m

$337

DenverToronto

DEN - YTZ

DENYTZ

Denver Intl

Tue 6/23

7:43 am-4:00 pm

1 stop6h 17m

Toronto Island

Tue 6/30

8:50 am-11:54 pm

1 stop17h 04m

$359

Quickest round-trip

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Tue 8/18

12:45 pm-9:35 pm

1 stop6h 50m

Ottawa

Wed 8/19

6:25 am-10:59 am

1 stop6h 34m

$430

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Tue 8/18

12:45 pm-9:35 pm

1 stop6h 50m

Ottawa

Wed 8/19

6:25 am-10:59 am

1 stop6h 34m

$431

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Tue 8/11

12:36 pm-11:29 pm

1 stop8h 53m

Toronto Pearson Intl

Sat 8/15

6:46 am-6:40 pm

1 stop13h 54m

$484

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Mon 6/15

6:00 am-5:19 pm

1 stop9h 19m

Toronto Pearson Intl

Fri 6/19

6:30 am-5:40 pm

2 stops13h 10m

$509

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Mon 6/15

8:14 am-11:14 pm

2 stops13h 00m

Toronto Pearson Intl

Fri 6/19

6:30 am-5:40 pm

2 stops13h 10m

$514

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Wed 6/3

3:45 pm-12:28 pm

2 stops18h 43m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

1:03 pm-10:24 pm

2 stops11h 21m

$517

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

The month of May is, on average, the cheapest month to fly to Region of Ontario from Colorado, with most prices found around $108. If you aren’t able to travel during the month of May, then book flights to Region of Ontario from Colorado during July instead. Flights to Region of Ontario in July, while not as cheap as those in May, still average around $119.

What is the cheapest day to depart on your flight to Region of Ontario?

According to our data, Thursday is the cheapest day to fly to Region of Ontario from Colorado. The lowest ticket price found for a Thursday departure recently was $631. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Colorado to Region of Ontario on a Sunday will generally be more expensive and average around $807. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Region of Ontario?

According to our data, the cheapest time of day to fly to Region of Ontario is in the morning. momondo users have found flights departing from Colorado to Region of Ontario in the morning for as low as $689. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $743.

What is the cheapest Colorado to Ontario flight route?

Fly from Denver Intl to Toronto Pearson Intl for the best Colorado - Ontario flight prices

How far in advance should I book a flight from Colorado to Ontario?

You are more likely to see cheaper flights to Region of Ontario from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $549 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Colorado for as low as $406 on momondo.

Can stopping save me money on Colorado to Region of Ontario flights?

You could potentially save up to 56% on your flight if you consider stops on a Colorado to Region of Ontario flight.

Cheap Colorado to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Region of Ontario

Best Price Found	$372
Fastest flight time	3h 10m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Colorado in the past 72 hours is $372. The best round-trip flight deal from Colorado to Region of Ontario found on momondo in the last 72 hours is $648.

The fastest flight from Colorado to Region of Ontario takes 3h 10m

Direct flights go from Colorado to Region of Ontario every day.

There are 125 airports in Region of Ontario. From Colorado there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from Colorado to Ontario

When did momondo last update prices for flights from Colorado to Ontario?
Prices for flights from Colorado to Ontario are updated daily.
How many operators does momondo search for flights from Colorado to Ontario?
As of May 2026, there are 4 operators available to choose from for flights from Colorado to Ontario.
How old do you have to be to fly from Colorado to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Colorado to Region of Ontario?
Based on momondo bookings for flights between Colorado and Region of Ontario, the leading plane model is Airbus A319, making up 46.66% of the total bookings. Other popular models include Airbus A220-300 with 26.73%, Boeing 787 Dreamliner with 4.71%, and Airbus A320-100/200 with 4.49%.

Best airlines flying from Colorado to Region of Ontario

Compare and see reviews for airlines that fly from Colorado to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $180	Free Cancellation	Rating 7.4 9,684 reviews	Search United Airlines flights
Air Canada	PriceFrom $186	Free Cancellation	Rating 7.1 11,000 reviews	Search Air Canada flights
WestJet	PriceFrom $223	Free Cancellation	Rating 7.2 3,331 reviews	Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to Ontario for you.

Can I find flights from Colorado to Ontario with flexible booking policies on momondo?

Flights from Colorado to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Ontario?

Once you have performed a search for Colorado to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Colorado to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Region of Ontario trip

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Popular cities in Ontario

Flights to Torontofrom $151

Flights to Vancouverfrom $146

Flights to Montrealfrom $217

Flights to Calgaryfrom $186

Flights to Ottawafrom $238

Flights to Halifaxfrom $227

Flights to Winnipegfrom $280

Flights to Québec Cityfrom $217

Flights to Saskatoonfrom $231

Flights to Kelownafrom $243

Flights to St. John'sfrom $327

Flights to Reginafrom $343

Cheap flights from Colorado to Ontario from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Ontario departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Colorado to Region of Ontario

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

What is the cheapest time of day to depart on your flight to Region of Ontario?

What is the cheapest Colorado to Ontario flight route?

How far in advance should I book a flight from Colorado to Ontario?

Can stopping save me money on Colorado to Region of Ontario flights?

What is the cheapest airline that flies from Colorado to Ontario?

What airlines fly to Region of Ontario?

How many flights depart from Colorado to Region of Ontario on average per day?

How many flights depart from Colorado to Region of Ontario on average per week?

How long is the flight from Colorado to Region of Ontario?

Cheap Colorado to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Region of Ontario

Best Price Found

Fastest flight time

Direct flights

Airports in Region of Ontario

Frequently asked questions about flying from Colorado to Ontario

Best airlines flying from Colorado to Region of Ontario

Compare and see reviews for airlines that fly from Colorado to Region of Ontario with momondo

Why use momondo?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

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