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Cheap flights from Colorado to Ontario from C$ 152

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 7/3. 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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Find the cheapest flights from Colorado to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:49 p.m. - 7:36 p.m.
DEN
-
YYZ
18h 47m
2 stops
Multiple Airlines Logo
7:55 p.m. - 3:56 a.m.
YYZ
-
DEN
10h 01m
1 stop
C$ 359Multiple Airlines
Tue, 3 Mar - Fri, 6 Mar
Multiple Airlines Logo
10:49 p.m. - 7:55 p.m.
DEN
-
YYZ
19h 06m
1 stop
Multiple Airlines Logo
7:55 p.m. - 3:56 a.m.
YYZ
-
DEN
10h 01m
1 stop
C$ 360Multiple Airlines
Tue, 3 Mar - Fri, 6 Mar
American Airlines Logo
5:44 p.m. - 11:44 a.m.
DEN
-
YUL
16h 00m
1 stop
American Airlines Logo
12:30 p.m. - 11:59 p.m.
YUL
-
DEN
13h 29m
1 stop
C$ 533American Airlines
Sat, 11 Apr - Tue, 14 Apr
WestJet Logo
12:15 p.m. - 5:15 p.m.
DEN
-
YHM
27h 00m
1 stop
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
C$ 538WestJet
Sun, 26 Apr - Sat, 23 May
WestJet Logo
12:15 p.m. - 5:15 p.m.
DEN
-
YHM
27h 00m
1 stop
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
C$ 543WestJet
Fri, 15 May - Mon, 18 May
American Airlines Logo
5:44 p.m. - 11:44 a.m.
DEN
-
YUL
16h 00m
1 stop
American Airlines Logo
12:30 p.m. - 10:40 p.m.
YUL
-
DEN
12h 10m
1 stop
C$ 550American Airlines
Fri, 17 Apr - Tue, 21 Apr
United Airlines Logo
7:05 a.m. - 3:02 p.m.
COS
-
YYZ
5h 57m
1 stop
United Airlines Logo
6:10 a.m. - 11:33 a.m.
YYZ
-
COS
7h 23m
1 stop
C$ 670United Airlines
Wed, 25 Feb - Thu, 26 Feb
United Airlines Logo
5:59 a.m. - 4:02 p.m.
COS
-
YYZ
8h 03m
2 stops
United Airlines Logo
6:10 a.m. - 11:33 a.m.
YYZ
-
COS
7h 23m
1 stop
C$ 683United Airlines
Wed, 25 Feb - Thu, 26 Feb
Air Canada Logo
1:25 p.m. - 9:21 p.m.
DEN
-
YXU
5h 56m
1 stop
Air Canada Logo
5:10 a.m. - 10:18 a.m.
YXU
-
DEN
7h 08m
1 stop
C$ 946Air Canada
Sat, 28 Mar - Sat, 4 Apr
Air Canada Logo
5:30 p.m. - 8:46 a.m.
DEN
-
YXU
13h 16m
1 stop
Air Canada Logo
5:10 a.m. - 10:23 a.m.
YXU
-
DEN
7h 13m
1 stop
C$ 1,038Air Canada
Sat, 21 Mar - Sat, 28 Mar

Alaska Airlines flights from Colorado to Region of Ontario

Our best Alaska Airlines deals on Colorado to Region of Ontario flight tickets
Alaska Airlines
18 Feb
DEN11:38 a.m.Denver Intl
25h 57m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
25 Feb
YYZ4:45 p.m.Toronto Pearson Intl
33h 14m
2 stops
DEN11:59 p.m.Denver Intl
C$ 810
Alaska Airlines
16 Feb
DEN11:38 a.m.Denver Intl
25h 57m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
19 Feb
YYZ4:45 p.m.Toronto Pearson Intl
19h 57m
2 stops
DEN10:42 a.m.Denver Intl
C$ 957
Alaska Airlines
19 Feb
DEN7:52 p.m.Denver Intl
17h 43m
1 stop
YYZ3:35 p.m.Toronto Pearson Intl
8 Mar
YYZ4:45 p.m.Toronto Pearson Intl
21h 29m
1 stop
DEN12:14 p.m.Denver Intl
C$ 1,005

Air Canada flights from Colorado to Region of Ontario

Our best Air Canada deals on Colorado to Region of Ontario flight tickets
Air Canada
14 May
DEN11:25 a.m.Denver Intl
8h 07m
1 stop
YTZ9:32 p.m.Toronto Island
19 May
YTZ12:30 p.m.Toronto Island
8h 30m
1 stop
DEN7:00 p.m.Denver Intl
C$ 640
Air Canada
27 Apr
DEN11:10 a.m.Denver Intl
6h 42m
1 stop
YTZ7:52 p.m.Toronto Island
30 Apr
YTZ12:30 p.m.Toronto Island
9h 25m
1 stop
DEN7:55 p.m.Denver Intl
C$ 642
Air Canada
3 Mar
DEN11:15 a.m.Denver Intl
3h 43m
YUL4:58 p.m.Montreal Pierre Elliott Trudeau Intl
10 Mar
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
C$ 651

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Region of Ontario 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 5 February 2026.
Use the filters below to find and compare flights from Colorado to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Tue 3/3

10:49 p.m.-7:36 p.m.

2 stops18h 47m

Toronto Pearson Intl

Fri 6/3

7:55 p.m.-3:56 a.m.

1 stop10h 01m

C$ 359

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Tue 3/3

10:49 p.m.-7:55 p.m.

1 stop19h 06m

Toronto Pearson Intl

Fri 6/3

7:55 p.m.-3:56 a.m.

1 stop10h 01m

C$ 360

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Sat 11/4

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

1 stop16h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

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

1 stop13h 29m

C$ 532

DenverHamilton

DEN - YHM

DENYHM

Denver Intl

Sun 26/4

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

1 stop27h 00m

Hamilton

Sat 23/5

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

1 stop19h 10m

C$ 538

DenverHamilton

DEN - YHM

DENYHM

Denver Intl

Fri 15/5

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

1 stop27h 00m

Hamilton

Mon 18/5

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

1 stop19h 10m

C$ 543

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Fri 17/4

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

1 stop16h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 21/4

12:30 p.m.-10:40 p.m.

1 stop12h 10m

C$ 550

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Wed 25/2

7:05 a.m.-3:02 p.m.

1 stop5h 57m

Toronto Pearson Intl

Thu 26/2

6:10 a.m.-11:33 a.m.

1 stop7h 23m

C$ 670

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Wed 25/2

5:59 a.m.-4:02 p.m.

2 stops8h 03m

Toronto Pearson Intl

Thu 26/2

6:10 a.m.-11:33 a.m.

1 stop7h 23m

C$ 683

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sat 28/3

1:25 p.m.-9:21 p.m.

1 stop5h 56m

London

Sat 4/4

5:10 a.m.-10:18 a.m.

1 stop7h 08m

C$ 946

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sat 21/3

5:30 p.m.-8:46 a.m.

1 stop13h 16m

London

Sat 28/3

5:10 a.m.-10:23 a.m.

1 stop7h 13m

C$ 1,038

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 Ontario from

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

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

In general, January is the cheapest month to fly from Colorado to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 433. If you are unable to visit Region of Ontario during the month of January, then departing from Colorado during the month March is also very affordable. Most momondo users find prices during this month for around C$ 539.

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

The cheapest day to depart from Colorado to Region of Ontario is on a Monday. Travellers who choose to depart for Region of Ontario on a Monday will often find tickets for as low as C$ 519. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 835.

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

Our most recent data shows that the best time of day to fly to Region of Ontario is in the afternoon. Flights from Colorado to Region of Ontario during this time can be as low as C$ 519. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,048 on average. Flights to Region of Ontario from Colorado at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 to Region of 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 C$ 693 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 C$ 519 on momondo.

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

There are 3 cabin classes available to choose from on Colorado to Ontario 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 Colorado to Region of Ontario flights?

You could potentially save up to 76% 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

C$ 366

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Region of Ontario

123 airports
The best flight deal from Colorado to Region of Ontario found on momondo in the last 72 hours is C$ 366
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 123 airports in Region of Ontario. From Colorado there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ).
Search flight deals

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

    Prices for flights from Colorado to Ontario were last updated today.

  • How many operators does momondo search 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 required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Colorado to Region of 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
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 214Free CancellationRating
7.4
9,240 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 249Free CancellationRating
7.1
10,694 reviews
Search Air Canada 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?

All flight searches from Colorado to Ontario on momondo can be filtered to show those which offer flexible booking policies.

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?

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

An easier way to manage your Region of Ontario trip

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Find better results for your trip to Ontario

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Popular flights according to clicks in the last 7 days on momondo
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