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$366+ Cheap flights from Colorado Springs (COS) to Ontario

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
COS — YYZ
Apr 13 — Apr 201
Mon 4/13
Mon 4/20
1 adult, Economy
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Cheap flight deals from Colorado Springs to Ontario

Cheapest flights from Colorado Springs to Ontario
Explore the most affordable flight options available from Colorado Springs to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 14, 2026.

This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
COS
-
YOW
1 stop5h 59m
United Airlines
Sat 5/26:25 am
YOW
-
COS
1 stop6h 22m
United Airlines
Deal found 3/13$366
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:13 pm
COS
-
YOW
2 stops18h 46m
United Airlines
Sat 4/116:25 am
YOW
-
COS
1 stop6h 32m
United Airlines
Deal found 3/9$402
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:33 pm
COS
-
YYZ
1 stop5h 59m
United Airlines
Sat 5/24:18 pm
YYZ
-
COS
1 stop5h 43m
United Airlines
Deal found 3/13$452
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/291:33 pm
COS
-
YYZ
1 stop5h 59m
United Airlines
Mon 4/610:45 am
YYZ
-
COS
1 stop5h 45m
United Airlines
Deal found 3/10$497
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:43 am
COS
-
YUL
1 stop7h 43m
United Airlines
Mon 5/43:25 pm
YUL
-
COS
2 stops10h 34m
United Airlines
Deal found 3/13$499
This Air Canada deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:33 pm
COS
-
YOW
2 stops10h 03m
Air Canada
Sat 5/27:00 am
YOW
-
COS
2 stops9h 24m
Air Canada
Deal found 3/9$505
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:42 am
COS
-
YYZ
1 stop5h 55m
United Airlines
Sat 4/255:50 pm
YYZ
-
COS
1 stop6h 04m
United Airlines
Deal found 3/12$508
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:13 pm
COS
-
YUL
2 stops15h 27m
United Airlines
Tue 4/286:10 am
YUL
-
COS
1 stop17h 44m
United Airlines
Deal found 3/13$521
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:20 am
COS
-
YYZ
2 stops12h 10m
Delta
Tue 4/1412:22 pm
YYZ
-
COS
2 stops9h 58m
Delta
Deal found 3/10$523
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:18 pm
COS
-
YYZ
1 stop8h 18m
United Airlines
Sun 6/287:00 am
YYZ
-
COS
1 stop6h 10m
United Airlines
Deal found 3/13$534
This American Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:39 pm
COS
-
YUL
1 stop23h 05m
American Airlines
Thu 4/3012:30 pm
YUL
-
COS
2 stops13h 02m
American Airlines
Deal found 3/9$547
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:15 am
COS
-
YUL
1 stop9h 25m
Delta
Thu 4/3012:42 pm
YUL
-
COS
1 stop9h 38m
Delta
Deal found 3/9$551

Find flight deals from Colorado Springs to Ontario

Keep the following information in mind while searching for Colorado Springs to Ontario flight deals. Data was last updated March 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$366
(United Airlines)

Popular in

February

Cheapest in

September

Average price

$566
Provider with most accurate pricing for Denver Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Toronto (YTO) flights.
Search Deals
From Colorado Springs to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado Springs to 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, Cheapflights users made 2,558,603 searches. Data last updated March 14, 2026.
Use the filters below to find and compare flights from Colorado Springs to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Wed 4/29

6:00 am-1:59 pm

1 stop5h 59m

Ottawa

Sat 5/2

6:25 am-10:47 am

1 stop6h 22m

$366

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Mon 4/6

5:13 pm-1:59 pm

2 stops18h 46m

Ottawa

Sat 4/11

6:25 am-10:57 am

1 stop6h 32m

$402
Quickest round-trip

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Wed 4/29

1:33 pm-9:32 pm

1 stop5h 59m

Toronto Pearson Intl

Sat 5/2

4:18 pm-8:01 pm

1 stop5h 43m

$452

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Wed 4/22

11:40 am-9:32 pm

1 stop7h 52m

Toronto Pearson Intl

Sat 4/25

4:18 pm-9:57 pm

1 stop7h 39m

$497

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Wed 4/29

1:33 pm-1:36 am

2 stops10h 03m

Ottawa

Sat 5/2

7:00 am-2:24 pm

2 stops9h 24m

$505

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sun 3/29

1:33 pm-9:32 pm

1 stop5h 59m

Toronto Pearson Intl

Mon 4/6

6:10 am-2:30 pm

2 stops10h 20m

$507

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Tue 4/7

1:33 pm-11:59 pm

2 stops8h 26m

Toronto Pearson Intl

Tue 4/14

5:20 pm-9:54 pm

1 stop6h 34m

$507

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Sat 4/25

5:13 pm-10:40 am

2 stops15h 27m

Montreal Pierre Elliott Trudeau Intl

Tue 4/28

6:10 am-9:54 pm

1 stop17h 44m

$521

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Wed 6/3

1:55 pm-11:57 pm

1 stop8h 02m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

7:00 am-12:48 pm

1 stop7h 48m

$551

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Thu 4/23

1:39 pm-11:44 am

2 stops20h 05m

Montreal Pierre Elliott Trudeau Intl

Thu 4/30

12:30 pm-11:32 pm

2 stops13h 02m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Best time to book a flight from Colorado Springs to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Colorado Springs with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado Springs to Ontario

What is the cheapest month to book a flight from Colorado Springs to Region of Ontario?

Currently, March is the cheapest month in which you can book a flight from Colorado Springs to Region of Ontario (average of $156). Flying from Colorado Springs to Region of Ontario in April is currently the most expensive (average of $367). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 14, 2026.
See what other customers who have flown with Delta and United Airlines from Colorado Springs to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,291 reviews

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,291 reviews
Delta
7.9
Good
8,291 reviews

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,423 reviews
Delta
7.9
Good
8,291 reviews

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Colorado Springs to Ontario?

    If you book a flight to Ontario from Colorado Springs, you will be flying from Colorado Springs, which is the city’s only airport. Colorado Springs (COS) is located 6.7 mi from the center of Colorado Springs.

  • How long is the flight from Colorado Springs to Region of Ontario?

    For as low as $366, United Airlines can have you in Region of Ontario from Colorado Springs in 5h 59m. Airlines will cover a distance of 1545 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Colorado Springs to Region of Ontario?

    While some choose either Colorado Springs - Toronto Pearson Intl or Colorado Springs - Ottawa, Colorado Springs - Montreal Pierre Elliott Trudeau Intl is the most popular route from Colorado Springs to Region of Ontario.

  • Can I find deals for flights from Colorado Springs to Ontario that include hotel bookings?

    Yes. In addition to deals on Colorado Springs to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado Springs to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to Ontario.

  • Can I find deals for business class flights from Colorado Springs to Ontario?

    Yes. Cheapflights offers flight deals from Colorado Springs to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado Springs to Region of Ontario?

    Currently, March is the cheapest month in which you can book a flight from Colorado Springs to Region of Ontario (average of $156). Flying from Colorado Springs to Region of Ontario in April is currently the most expensive (average of $367). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Colorado Springs to Ontario

Discover the top 2 airlines that operate flights from Colorado Springs to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$144Average$172FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$177Average$515FlexibilityNo cancel feeOn-time69%

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