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Cheap flights from Colorado to Ontario from C$ 154

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 23/6. 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.
WestJet Logo
12:15 p.m. - 10:45 p.m.
DEN
-
YYZ
8h 30m
1 stop
WestJet Logo
8:00 p.m. - 11:20 a.m.
YYZ
-
DEN
17h 20m
1 stop
C$ 395WestJet
Wed, 27 May - Sat, 30 May
WestJet Logo
12:15 p.m. - 12:10 a.m.
DEN
-
YYZ
9h 55m
1 stop
WestJet Logo
10:25 p.m. - 11:20 a.m.
YYZ
-
DEN
14h 55m
1 stop
C$ 399WestJet
Fri, 5 Jun - Mon, 8 Jun
Multiple Airlines Logo
7:43 a.m. - 4:00 p.m.
DEN
-
YTZ
6h 17m
1 stop
Multiple Airlines Logo
8:50 a.m. - 11:54 p.m.
YTZ
-
DEN
17h 04m
1 stop
C$ 459Multiple Airlines
Tue, 23 Jun - Sat, 27 Jun
Multiple Airlines Logo
4:54 p.m. - 12:55 p.m.
DEN
-
YTZ
18h 01m
1 stop
Multiple Airlines Logo
8:45 a.m. - 11:54 p.m.
YTZ
-
DEN
17h 09m
1 stop
C$ 460Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
United Airlines Logo
12:45 p.m. - 9:35 p.m.
COS
-
YOW
6h 50m
1 stop
United Airlines Logo
6:25 a.m. - 10:59 a.m.
YOW
-
COS
6h 34m
1 stop
C$ 586United Airlines
Tue, 18 Aug - Wed, 19 Aug
United Airlines Logo
12:45 p.m. - 9:35 p.m.
COS
-
YOW
6h 50m
1 stop
United Airlines Logo
6:25 a.m. - 10:59 a.m.
YOW
-
COS
6h 34m
1 stop
C$ 587United Airlines
Tue, 18 Aug - Wed, 19 Aug
American Airlines Logo
12:36 p.m. - 11:29 p.m.
COS
-
YYZ
8h 53m
1 stop
American Airlines Logo
6:46 a.m. - 6:40 p.m.
YYZ
-
COS
13h 54m
1 stop
C$ 659American Airlines
Tue, 11 Aug - Sat, 15 Aug
Delta Logo
6:00 a.m. - 5:19 p.m.
COS
-
YYZ
9h 19m
1 stop
Delta Logo
6:30 a.m. - 5:40 p.m.
YYZ
-
COS
13h 10m
2 stops
C$ 693Delta
Mon, 15 Jun - Fri, 19 Jun
Delta Logo
8:14 a.m. - 11:14 p.m.
COS
-
YYZ
13h 00m
2 stops
Delta Logo
6:30 a.m. - 5:40 p.m.
YYZ
-
COS
13h 10m
2 stops
C$ 700Delta
Mon, 15 Jun - Fri, 19 Jun
American Airlines Logo
3:45 p.m. - 12:28 p.m.
COS
-
YUL
18h 43m
2 stops
American Airlines Logo
7:29 a.m. - 10:24 p.m.
YUL
-
COS
16h 55m
2 stops
C$ 704American Airlines
Wed, 3 Jun - Sat, 6 Jun

WestJet flights from Colorado to Region of Ontario

Our best WestJet deals on Colorado to Region of Ontario flight tickets
WestJet
15 May
DEN12:15 p.m.Denver Intl
8h 30m
1 stop
YYZ10:45 p.m.Toronto Pearson Intl
19 May
YYZ10:25 p.m.Toronto Pearson Intl
14h 55m
1 stop
DEN11:20 a.m.Denver Intl
C$ 377
WestJet
27 May
DEN12:15 p.m.Denver Intl
8h 30m
1 stop
YYZ10:45 p.m.Toronto Pearson Intl
30 May
YYZ8:00 p.m.Toronto Pearson Intl
17h 20m
1 stop
DEN11:20 a.m.Denver Intl
C$ 395
WestJet
5 Jun
DEN12:15 p.m.Denver Intl
9h 55m
1 stop
YYZ12:10 a.m.Toronto Pearson Intl
8 Jun
YYZ10:25 p.m.Toronto Pearson Intl
14h 55m
1 stop
DEN11:20 a.m.Denver Intl
C$ 399

Delta flights from Colorado to Region of Ontario

Our best Delta deals on Colorado to Region of Ontario flight tickets
Delta
15 Jun
COS6:00 a.m.Colorado Springs
9h 19m
1 stop
YYZ5:19 p.m.Toronto Pearson Intl
19 Jun
YYZ6:30 a.m.Toronto Pearson Intl
13h 10m
2 stops
COS5:40 p.m.Colorado Springs
C$ 693
Delta
15 Jun
COS8:14 a.m.Colorado Springs
13h 00m
2 stops
YYZ11:14 p.m.Toronto Pearson Intl
19 Jun
YYZ6:30 a.m.Toronto Pearson Intl
13h 10m
2 stops
COS5:40 p.m.Colorado Springs
C$ 700
Delta
9 Aug
COS6:00 a.m.Colorado Springs
9h 19m
1 stop
YYZ5:19 p.m.Toronto Pearson Intl
15 Aug
YYZ1:38 p.m.Toronto Pearson Intl
10h 16m
1 stop
COS9:54 p.m.Colorado Springs
C$ 704

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 6 May 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

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 27/5

12:15 p.m.-10:45 p.m.

1 stop8h 30m

Toronto Pearson Intl

Sat 30/5

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

1 stop17h 20m

C$ 395

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 5/6

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

1 stop9h 55m

Toronto Pearson Intl

Mon 8/6

10:25 p.m.-11:20 a.m.

1 stop14h 55m

C$ 399

DenverToronto

DEN - YTZ

DENYTZ

Denver Intl

Tue 23/6

7:43 a.m.-4:00 p.m.

1 stop6h 17m

Toronto Island

Sat 27/6

8:50 a.m.-11:54 p.m.

1 stop17h 04m

C$ 459

DenverToronto

DEN - YTZ

DENYTZ

Denver Intl

Wed 3/6

4:54 p.m.-12:55 p.m.

1 stop18h 01m

Toronto Island

Wed 10/6

8:45 a.m.-11:54 p.m.

1 stop17h 09m

C$ 460
Quickest round-trip

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Tue 18/8

12:45 p.m.-9:35 p.m.

1 stop6h 50m

Ottawa

Wed 19/8

6:25 a.m.-10:59 a.m.

1 stop6h 34m

C$ 586

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Tue 18/8

12:45 p.m.-9:35 p.m.

1 stop6h 50m

Ottawa

Wed 19/8

6:25 a.m.-10:59 a.m.

1 stop6h 34m

C$ 587

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Tue 11/8

12:36 p.m.-11:29 p.m.

1 stop8h 53m

Toronto Pearson Intl

Sat 15/8

6:46 a.m.-6:40 p.m.

1 stop13h 54m

C$ 659

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Mon 15/6

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

1 stop9h 19m

Toronto Pearson Intl

Fri 19/6

6:30 a.m.-5:40 p.m.

2 stops13h 10m

C$ 693

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Mon 15/6

8:14 a.m.-11:14 p.m.

2 stops13h 00m

Toronto Pearson Intl

Fri 19/6

6:30 a.m.-5:40 p.m.

2 stops13h 10m

C$ 700

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Wed 3/6

3:45 p.m.-12:28 p.m.

2 stops18h 43m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

7:29 a.m.-10:24 p.m.

2 stops16h 55m

C$ 704

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, May 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$ 147. If you are unable to visit Region of Ontario during the month of May, then departing from Colorado during the month July is also very affordable. Most momondo users find prices during this month for around C$ 162.

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$ 539. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 833.

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 morning. Flights from Colorado to Region of Ontario during this time can be as low as C$ 544. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 864 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$ 747 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$ 553 on momondo.

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

You could potentially save up to 61% 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$ 380

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$ 380. The best round-trip flight deal from Colorado to Region of Ontario found on momondo in the last 72 hours is C$ 267.
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$ 283Free CancellationRating
7.1
11,000 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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