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Cheap flights from Ontario to Colorado from C$ 204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Colorado departing on 26/1. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:52 p.m. - 10:49 a.m.YUL-DEN
20h 57m1 stop
American Airlines Logo
4:30 p.m. - 3:08 p.m.DEN-YUL
20h 38m1 stop
C$ 458American Airlines
Find Deal
Tue, 20 Jan - Mon, 26 Jan
Multiple Airlines Logo
8:00 a.m. - 10:20 a.m.YUL-DEN
28h 20m2 stops
Multiple Airlines Logo
11:59 p.m. - 12:30 a.m.DEN-YUL
22h 31m1 stop
C$ 471Multiple Airlines
Find Deal
Tue, 20 Jan - Thu, 29 Jan
Alaska Airlines Logo
4:45 p.m. - 6:03 p.m.YYZ-DEN
27h 18m1 stop
Alaska Airlines Logo
8:22 p.m. - 3:35 p.m.DEN-YYZ
17h 13m1 stop
C$ 489Alaska Airlines
Find Deal
Tue, 9 Dec - Tue, 6 Jan
Air Canada Logo
12:30 p.m. - 7:55 p.m.YTZ-DEN
9h 25m1 stop
Air Canada Logo
11:15 a.m. - 9:35 p.m.DEN-YTZ
8h 20m1 stop
C$ 492Air Canada
Find Deal
Thu, 20 Nov - Wed, 26 Nov
Air Canada Logo
5:25 p.m. - 7:55 p.m.YUL-DEN
4h 30mdirect
Air Canada Logo
11:15 a.m. - 4:58 p.m.DEN-YUL
3h 43mdirect
C$ 493Air Canada
Find Deal
Thu, 20 Nov - Wed, 26 Nov
Alaska Airlines Logo
4:45 p.m. - 2:46 p.m.YYZ-DEN
24h 01m1 stop
Alaska Airlines Logo
6:48 p.m. - 3:35 p.m.DEN-YYZ
18h 47m2 stops
C$ 503Alaska Airlines
Find Deal
Tue, 9 Dec - Tue, 6 Jan
United Airlines Logo
6:00 a.m. - 4:12 p.m.YUL-DEN
12h 12m1 stop
United Airlines Logo
6:00 a.m. - 6:40 p.m.DEN-YUL
10h 40m1 stop
C$ 585United Airlines
Find Deal
Sat, 17 Jan - Tue, 27 Jan
United Airlines Logo
1:10 p.m. - 9:59 p.m.YUL-DEN
10h 49m1 stop
United Airlines Logo
8:25 p.m. - 10:20 a.m.DEN-YUL
11h 55m1 stop
C$ 586United Airlines
Find Deal
Wed, 21 Jan - Wed, 28 Jan
WestJet Logo
6:20 a.m. - 3:35 p.m.YKF-DEN
35h 15m2 stops
WestJet Logo
6:30 a.m. - 5:29 a.m.DEN-YKF
20h 59m2 stops
C$ 959WestJet
Find Deal
Mon, 2 Mar - Mon, 9 Mar
WestJet Logo
6:20 a.m. - 7:02 p.m.YKF-DEN
14h 42m2 stops
WestJet Logo
6:30 a.m. - 5:29 a.m.DEN-YKF
20h 59m2 stops
C$ 1,119WestJet
Find Deal
Tue, 3 Mar - Wed, 4 Mar

WestJet flights from Region of Ontario to Colorado

Our best WestJet deals on Region of Ontario to Colorado flight tickets
WestJet
2 Mar
YKF6:20 a.m.Toronto Region of Waterloo Intl
35h 15m
2 stops
DEN3:35 p.m.Denver Intl
9 Mar
DEN6:30 a.m.Denver Intl
20h 59m
2 stops
YKF5:29 a.m.Toronto Region of Waterloo Intl
C$ 959
Find similar
WestJet
2 Nov
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
10h 42m
1 stop
DEN3:42 p.m.Denver Intl
13 Nov
DEN11:08 a.m.Denver Intl
10h 34m
1 stop
YUL11:42 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,153
Find similar
WestJet
4 Nov
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
31h 54m
2 stops
DEN12:39 p.m.Denver Intl
8 Nov
DEN11:05 a.m.Denver Intl
35h 38m
2 stops
YUL12:43 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,193
Find similar

Air Canada flights from Region of Ontario to Colorado

Our best Air Canada deals on Region of Ontario to Colorado flight tickets
Air Canada
20 Nov
YTZ12:30 p.m.Toronto Island
9h 25m
1 stop
DEN7:55 p.m.Denver Intl
26 Nov
DEN11:15 a.m.Denver Intl
8h 20m
1 stop
YTZ9:35 p.m.Toronto Island
C$ 492
Find similar
Air Canada
20 Nov
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
26 Nov
DEN11:15 a.m.Denver Intl
3h 43m
YUL4:58 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 493
Find similar
Air Canada
20 Nov
YYZ1:00 p.m.Toronto Pearson Intl
8h 55m
1 stop
DEN7:55 p.m.Denver Intl
26 Nov
DEN11:15 a.m.Denver Intl
8h 29m
1 stop
YYZ9:44 p.m.Toronto Pearson Intl
C$ 501
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of 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, momondo users made 96,600 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from Ontario to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 20/1

3:52 p.m.-10:49 a.m.

1 stop20h 57m

Denver Intl

Mon 26/1

4:30 p.m.-3:08 p.m.

1 stop20h 38m

C$ 458

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 20/1

8:00 a.m.-10:20 a.m.

2 stops28h 20m

Denver Intl

Thu 29/1

11:59 p.m.-12:30 a.m.

1 stop22h 31m

C$ 471

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-6:03 p.m.

1 stop27h 18m

Denver Intl

Tue 6/1

8:22 p.m.-3:35 p.m.

1 stop17h 13m

C$ 489

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Thu 20/11

12:30 p.m.-7:55 p.m.

1 stop9h 25m

Denver Intl

Wed 26/11

11:15 a.m.-9:35 p.m.

1 stop8h 20m

C$ 492

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

5:25 p.m.-7:55 p.m.

Nonstop4h 30m

Denver Intl

Wed 26/11

11:15 a.m.-4:58 p.m.

Nonstop3h 43m

C$ 493

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-2:46 p.m.

1 stop24h 01m

Denver Intl

Tue 6/1

6:48 p.m.-3:35 p.m.

2 stops18h 47m

C$ 503

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

6:00 a.m.-4:12 p.m.

1 stop12h 12m

Denver Intl

Tue 27/1

6:00 a.m.-6:40 p.m.

1 stop10h 40m

C$ 585

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

1:10 p.m.-9:59 p.m.

1 stop10h 49m

Denver Intl

Wed 28/1

8:25 p.m.-10:20 a.m.

1 stop11h 55m

C$ 586

TorontoDenver

YKF - DEN

YKFDEN

Toronto Region of Waterloo Intl

Mon 2/3

6:20 a.m.-3:35 p.m.

2 stops35h 15m

Denver Intl

Mon 9/3

6:30 a.m.-5:29 a.m.

2 stops20h 59m

C$ 959

TorontoDenver

YKF - DEN

YKFDEN

Toronto Region of Waterloo Intl

Tue 3/3

6:20 a.m.-7:02 p.m.

2 stops14h 42m

Denver Intl

Wed 4/3

6:30 a.m.-5:29 a.m.

2 stops20h 59m

C$ 1,119

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Colorado from

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

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

What is the cheapest month to fly to Colorado?

The cheapest month to fly to Colorado from Region of Ontario is in November. Flight prices, which tend to average around C$ 584, are often lower during this time because this is during the off-season. If you don’t want to visit Colorado in November, then you should wait until August to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 593.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart on your flight to Colorado is on a Friday when prices can be found for as low as C$ 716. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Region of Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,057.

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

According to our data, the cheapest time of day to fly to Colorado is in the evening. momondo users have found flights departing from Region of Ontario to Colorado in the evening for as low as C$ 636. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around C$ 822. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ontario to Colorado flight route?

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

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

You are more likely to see cheaper flights to Colorado from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around C$ 639 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Region of Ontario for as low as C$ 574 on momondo.

What cabin class options are available on Ontario to Colorado flights?

There are 4 cabin classes available to choose from on Ontario to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 26% on your flight if you consider stops on a Region of Ontario to Colorado flight.

Cheap Region of Ontario to Colorado flight deals and tips

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

Best price found

C$ 384

Fastest flight time

3h 50m

Direct flights

Every day

Airports in Colorado

1 airport
The best one-way flight to Colorado from Region of Ontario in the past 72 hours is C$ 384. The best round-trip flight deal from Region of Ontario to Colorado found on momondo in the last 72 hours is C$ 627.
The fastest flight from Region of Ontario to Colorado takes 3h 50m
Direct flights go from Region of Ontario to Colorado every day.
There is 1 airport near Colorado: Denver Intl (DEN)
Search flight deals

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

    Prices for flights from Ontario to Colorado are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Colorado.

  • What documentation or ID do you need to fly to Colorado?

    The travel and health documents you'll need for your trip to Colorado 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 Colorado. 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 Region of Ontario to Colorado?

Best airlines flying from Region of Ontario to Colorado

Compare and see reviews for airlines that fly from Region of Ontario to Colorado with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 262Free CancellationRating
7.2
3,152 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 308Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 398Free CancellationRating
7.1
10,381 reviews
Search Air Canada flights

Why use momondo?

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

Finding the right flight to Colorado from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Colorado quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Colorado from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Ontario to Colorado flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Colorado, momondo offers a useful price alert feature which will track prices for flights to Colorado from Ontario and alert you when they change.

An easier way to manage your Colorado 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.
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