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Cheap flights from Colorado to Ontario from C$ 181

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 19/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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.
WestJet Logo
12:15 p.m. - 11:45 p.m.
DEN
-
YUL
9h 30m
1 stop
WestJet Logo
8:00 p.m. - 11:20 a.m.
YUL
-
DEN
17h 20m
1 stop
C$ 494WestJet
Sat, 29 Aug - Mon, 31 Aug
WestJet Logo
12:15 p.m. - 11:45 p.m.
DEN
-
YUL
9h 30m
1 stop
WestJet Logo
7:15 a.m. - 11:20 a.m.
YUL
-
DEN
30h 05m
1 stop
C$ 512WestJet
Tue, 11 Aug - Mon, 17 Aug
Multiple Airlines Logo
12:15 p.m. - 11:45 p.m.
DEN
-
YUL
9h 30m
1 stop
Multiple Airlines Logo
10:35 a.m. - 12:29 a.m.
YUL
-
DEN
15h 54m
2 stops
C$ 539Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
12:15 p.m. - 11:45 p.m.
DEN
-
YUL
9h 30m
1 stop
Multiple Airlines Logo
10:35 a.m. - 4:45 p.m.
YUL
-
DEN
32h 10m
2 stops
C$ 563Multiple Airlines
Wed, 2 Sep - Fri, 4 Sep
United Airlines Logo
7:40 a.m. - 10:36 p.m.
COS
-
YYZ
12h 56m
1 stop
United Airlines Logo
7:00 a.m. - 10:33 a.m.
YYZ
-
COS
5h 33m
1 stop
C$ 760United Airlines
Tue, 25 Aug - Wed, 26 Aug
Delta Logo
6:00 a.m. - 5:19 p.m.
COS
-
YYZ
9h 19m
1 stop
Delta Logo
10:00 a.m. - 9:07 p.m.
YYZ
-
COS
13h 07m
2 stops
C$ 774Delta
Mon, 6 Jul - Thu, 9 Jul
United Airlines Logo
1:30 p.m. - 9:32 p.m.
COS
-
YYZ
6h 02m
1 stop
United Airlines Logo
4:18 p.m. - 8:44 p.m.
YYZ
-
COS
6h 26m
1 stop
C$ 818United Airlines
Wed, 29 Jul - Tue, 11 Aug
Delta Logo
6:00 a.m. - 5:19 p.m.
COS
-
YYZ
9h 19m
1 stop
Delta Logo
7:55 a.m. - 9:38 p.m.
YYZ
-
COS
15h 43m
2 stops
C$ 821Delta
Thu, 6 Aug - Tue, 11 Aug
Air Canada Logo
11:30 a.m. - 8:32 p.m.
DEN
-
YXU
7h 02m
1 stop
Air Canada Logo
5:40 a.m. - 10:35 a.m.
YXU
-
DEN
6h 55m
1 stop
C$ 1,145Air Canada
Fri, 31 Jul - Sun, 9 Aug
Air Canada Logo
11:30 a.m. - 8:32 p.m.
DEN
-
YXU
7h 02m
1 stop
Air Canada Logo
5:40 a.m. - 10:35 a.m.
YXU
-
DEN
6h 55m
1 stop
C$ 1,149Air Canada
Fri, 31 Jul - Sun, 9 Aug

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United Airlines flights from Colorado to Region of Ontario

Our best United Airlines deals on Colorado to Region of Ontario flight tickets
United Airlines
25 Aug
COS7:40 a.m.Colorado Springs
12h 56m
1 stop
YYZ10:36 p.m.Toronto Pearson Intl
26 Aug
YYZ7:00 a.m.Toronto Pearson Intl
5h 33m
1 stop
COS10:33 a.m.Colorado Springs
C$ 760
United Airlines
29 Jul
COS1:30 p.m.Colorado Springs
6h 02m
1 stop
YYZ9:32 p.m.Toronto Pearson Intl
11 Aug
YYZ4:18 p.m.Toronto Pearson Intl
6h 26m
1 stop
COS8:44 p.m.Colorado Springs
C$ 818
United Airlines
29 Jul
COS1:30 p.m.Colorado Springs
8h 29m
2 stops
YYZ11:59 p.m.Toronto Pearson Intl
7 Aug
YYZ7:00 a.m.Toronto Pearson Intl
6h 09m
1 stop
COS11:09 a.m.Colorado Springs
C$ 832

Air Canada flights from Colorado to Region of Ontario

Our best Air Canada deals on Colorado to Region of Ontario flight tickets
Air Canada
12 Jul
DEN11:25 a.m.Denver Intl
6h 26m
1 stop
YTZ7:51 p.m.Toronto Island
21 Jul
YTZ12:30 p.m.Toronto Island
8h 25m
1 stop
DEN6:55 p.m.Denver Intl
C$ 711
Air Canada
9 Jul
DEN6:05 p.m.Denver Intl
3h 12m
YYZ11:17 p.m.Toronto Pearson Intl
20 Jul
YYZ8:55 a.m.Toronto Pearson Intl
3h 40m
DEN10:35 a.m.Denver Intl
C$ 767
Air Canada
9 Jul
DEN11:25 a.m.Denver Intl
6h 30m
1 stop
YYZ7:55 p.m.Toronto Pearson Intl
20 Jul
YYZ8:55 a.m.Toronto Pearson Intl
3h 40m
DEN10:35 a.m.Denver Intl
C$ 780

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 25 June 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

Cheapest round-trip

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Sat 29/8

12:15 p.m.-11:45 p.m.

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 31/8

8:00 p.m.-11:20 a.m.

1 stop17h 20m

C$ 494

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Tue 11/8

12:15 p.m.-11:45 p.m.

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 17/8

7:15 a.m.-11:20 a.m.

1 stop30h 05m

C$ 512

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Fri 11/9

12:15 p.m.-11:45 p.m.

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

10:35 a.m.-12:29 a.m.

2 stops15h 54m

C$ 539

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Wed 2/9

12:15 p.m.-11:45 p.m.

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

10:35 a.m.-4:45 p.m.

2 stops32h 10m

C$ 563

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Tue 25/8

7:40 a.m.-10:36 p.m.

1 stop12h 56m

Toronto Pearson Intl

Wed 26/8

7:00 a.m.-10:33 a.m.

1 stop5h 33m

C$ 760

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Mon 6/7

6:00 a.m.-5:19 p.m.

1 stop9h 19m

Toronto Pearson Intl

Thu 9/7

10:00 a.m.-9:07 p.m.

2 stops13h 07m

C$ 774
Quickest round-trip

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Wed 29/7

1:30 p.m.-9:32 p.m.

1 stop6h 02m

Toronto Pearson Intl

Tue 11/8

4:18 p.m.-8:44 p.m.

1 stop6h 26m

C$ 818

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Thu 6/8

6:00 a.m.-5:19 p.m.

1 stop9h 19m

Toronto Pearson Intl

Tue 11/8

7:55 a.m.-9:38 p.m.

2 stops15h 43m

C$ 821

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Fri 31/7

11:30 a.m.-8:32 p.m.

1 stop7h 02m

London

Sun 9/8

5:40 a.m.-10:35 a.m.

1 stop6h 55m

C$ 1,145

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Fri 31/7

11:30 a.m.-8:32 p.m.

1 stop7h 02m

London

Sun 9/8

5:40 a.m.-10:35 a.m.

1 stop6h 55m

C$ 1,149

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$ 184. 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$ 226.

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 Wednesday. Travellers who choose to depart for Region of Ontario on a Wednesday will often find tickets for as low as C$ 563. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 870.

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$ 409. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 903 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 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 C$ 819 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$ 647 on momondo.

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

There are 2 cabin classes available to choose from on Colorado to Region of 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 65% 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$ 475

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 C$ 475. The best round-trip flight deal from Colorado to Region of Ontario found on momondo in the last 72 hours is C$ 237.
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 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
Air CanadaPriceFrom C$ 296Free CancellationRating
7.1
11,254 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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