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Cheap flights from Ontario to Colorado from C$ 190

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 23/3. 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.
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
WestJet Logo
12:15 p.m. - 5:10 p.m.
DEN
-
YHM
26h 55m
1 stop
C$ 474WestJet
Fri, 19 Jun - Tue, 23 Jun
Multiple Airlines Logo
7:00 a.m. - 9:35 p.m.
YOW
-
DEN
16h 35m
2 stops
Multiple Airlines Logo
9:25 a.m. - 12:02 a.m.
DEN
-
YOW
12h 37m
1 stop
C$ 494Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
United Airlines Logo
10:30 a.m. - 9:44 p.m.
YOW
-
COS
13h 14m
2 stops
United Airlines Logo
5:59 a.m. - 9:18 p.m.
COS
-
YOW
13h 19m
2 stops
C$ 509United Airlines
Mon, 23 Feb - Wed, 25 Feb
United Airlines Logo
10:25 a.m. - 8:49 a.m.
YOW
-
COS
24h 24m
2 stops
United Airlines Logo
1:33 p.m. - 9:11 a.m.
COS
-
YOW
17h 38m
2 stops
C$ 511United Airlines
Thu, 9 Apr - Mon, 13 Apr
Air Canada Logo
8:50 a.m. - 4:40 p.m.
YUL
-
DEN
9h 50m
2 stops
Air Canada Logo
8:05 a.m. - 9:00 p.m.
DEN
-
YUL
10h 55m
1 stop
C$ 519Air Canada
Mon, 23 Feb - Sun, 1 Mar
Air Canada Logo
8:00 a.m. - 5:44 p.m.
YYZ
-
DEN
11h 44m
1 stop
Air Canada Logo
5:30 p.m. - 10:41 p.m.
DEN
-
YYZ
3h 11mdirect
C$ 519Air Canada
Fri, 20 Mar - Fri, 27 Mar
Delta Logo
6:00 a.m. - 7:36 p.m.
YUL
-
DEN
15h 36m
2 stops
Delta Logo
12:51 p.m. - 11:59 a.m.
DEN
-
YUL
21h 08m
2 stops
C$ 533Delta
Wed, 11 Mar - Tue, 24 Mar
American Airlines Logo
12:30 p.m. - 11:59 p.m.
YUL
-
DEN
13h 29m
1 stop
American Airlines Logo
5:44 p.m. - 11:44 a.m.
DEN
-
YUL
16h 00m
1 stop
C$ 540American Airlines
Thu, 9 Apr - Mon, 13 Apr
American Airlines Logo
5:14 p.m. - 11:59 p.m.
YYZ
-
COS
8h 45m
1 stop
American Airlines Logo
4:49 p.m. - 4:19 p.m.
COS
-
YYZ
21h 30m
1 stop
C$ 550American Airlines
Fri, 27 Feb - Mon, 2 Mar
Delta Logo
5:40 a.m. - 8:28 p.m.
YOW
-
COS
16h 48m
2 stops
Delta Logo
1:28 p.m. - 12:39 a.m.
COS
-
YOW
9h 11m
2 stops
C$ 583Delta
Fri, 20 Mar - Fri, 27 Mar

Air Canada flights from Region of Ontario to Colorado

Our best Air Canada deals on Region of Ontario to Colorado flight tickets
Air Canada
23 Feb
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
1 Mar
DEN8:05 a.m.Denver Intl
10h 55m
1 stop
YUL9:00 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 519
Air Canada
23 Feb
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
1 Mar
DEN11:15 a.m.Denver Intl
3h 43m
YUL4:58 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 520
Air Canada
26 Feb
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
4 Mar
DEN8:05 a.m.Denver Intl
10h 55m
1 stop
YUL9:00 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 522

Alaska Airlines flights from Region of Ontario to Colorado

Our best Alaska Airlines deals on Region of Ontario to Colorado flight tickets
Alaska Airlines
26 Feb
YYZ4:45 p.m.Toronto Pearson Intl
9h 14m
1 stop
DEN11:59 p.m.Denver Intl
17 Mar
DEN6:16 p.m.Denver Intl
19h 19m
1 stop
YYZ3:35 p.m.Toronto Pearson Intl
C$ 544
Alaska Airlines
3 Mar
YYZ4:45 p.m.Toronto Pearson Intl
33h 14m
2 stops
DEN11:59 p.m.Denver Intl
10 Mar
DEN1:10 p.m.Denver Intl
24h 25m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
C$ 559
Alaska Airlines
4 Mar
YYZ4:45 p.m.Toronto Pearson Intl
19h 57m
2 stops
DEN10:42 a.m.Denver Intl
11 Mar
DEN11:38 a.m.Denver Intl
25h 57m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
C$ 594

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 4 February 2026.
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

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Fri 19/6

6:10 p.m.-11:20 a.m.

1 stop19h 10m

Denver Intl

Tue 23/6

12:15 p.m.-5:10 p.m.

1 stop26h 55m

C$ 474

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 4/3

7:00 a.m.-9:35 p.m.

2 stops16h 35m

Denver Intl

Wed 11/3

9:25 a.m.-12:02 a.m.

1 stop12h 37m

C$ 494

OttawaColorado Springs

YOW - COS

YOWCOS

Ottawa

Mon 23/2

10:30 a.m.-9:44 p.m.

2 stops13h 14m

Colorado Springs

Wed 25/2

5:59 a.m.-9:18 p.m.

2 stops13h 19m

C$ 509

OttawaColorado Springs

YOW - COS

YOWCOS

Ottawa

Thu 9/4

10:25 a.m.-8:49 a.m.

2 stops24h 24m

Colorado Springs

Mon 13/4

1:33 p.m.-9:11 a.m.

2 stops17h 38m

C$ 511

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

8:50 a.m.-4:40 p.m.

2 stops9h 50m

Denver Intl

Sun 1/3

8:05 a.m.-9:00 p.m.

1 stop10h 55m

C$ 519

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Fri 20/3

8:00 a.m.-5:44 p.m.

1 stop11h 44m

Denver Intl

Fri 27/3

5:30 p.m.-10:41 p.m.

Nonstop3h 11m

C$ 519

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Wed 11/3

6:00 a.m.-7:36 p.m.

2 stops15h 36m

Denver Intl

Tue 24/3

12:51 p.m.-11:59 a.m.

2 stops21h 08m

C$ 533

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

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

1 stop13h 29m

Denver Intl

Mon 13/4

5:44 p.m.-11:44 a.m.

1 stop16h 00m

C$ 540

TorontoColorado Springs

YYZ - COS

YYZCOS

Toronto Pearson Intl

Fri 27/2

5:14 p.m.-11:59 p.m.

1 stop8h 45m

Colorado Springs

Mon 2/3

4:49 p.m.-4:19 p.m.

1 stop21h 30m

C$ 550

OttawaColorado Springs

YOW - COS

YOWCOS

Ottawa

Fri 20/3

5:40 a.m.-8:28 p.m.

2 stops16h 48m

Colorado Springs

Fri 27/3

1:28 p.m.-12:39 a.m.

2 stops9h 11m

C$ 583

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$ 538, 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$ 567.

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$ 682. 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$ 980.

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 afternoon. momondo users have found flights departing from Region of Ontario to Colorado in the afternoon for as low as C$ 741. 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 at noon because they tend to be around C$ 970. 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$ 631 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$ 488 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 21% 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$ 330

Fastest flight time

3h 42m

Direct flights

Every day

Airports in Colorado

87 airports
The best one-way flight to Colorado from Region of Ontario in the past 72 hours is C$ 330. The best round-trip flight deal from Region of Ontario to Colorado found on momondo in the last 72 hours is C$ 587.
The fastest flight from Region of Ontario to Colorado takes 3h 42m
Direct flights go from Region of Ontario to Colorado every day.
There are 87 airports in Colorado. From Region of Ontario there are direct flights to 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$ 256Free CancellationRating
7.2
3,255 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 301Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 391Free CancellationRating
7.1
10,688 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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