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$315+ Cheap flights from Colorado Springs (COS) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
COS — YYZ
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
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 December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. 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.
Tue 12/1610:24 amCOS - YUL
2 stops9h 18mUnited Airlines
Wed 1/146:00 amYUL - COS
1 stop7h 02mUnited Airlines
Deal found 12/13$828
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Sat 12/1312:50 pmCOS - YYZ
1 stop6h 31mUnited Airlines
Sat 12/204:10 pmYYZ - COS
1 stop6h 06mUnited Airlines
Deal found 12/12$1,655

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 December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$378
(United Airlines)

One-way from

$315
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$588
Provider with most accurate pricing for Denver Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Toronto (YTO) flights.
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From Colorado Springs to Ontario
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One-way flight from Colorado Springs to Ontario
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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 14, 2025.
Use the filters below to find and compare flights from Colorado Springs to Ontario that are best for you.

Fly from

Colorado Springs

Fly to

Ontario

Route

Depart

Return

Price

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Sat 1/10

5:50 am-6:52 pm

2 stops11h 02m

Ottawa

Tue 1/13

9:45 am-10:06 pm

2 stops14h 21m

$378

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sat 1/10

12:08 pm-10:14 am

2 stops20h 06m

Toronto Pearson Intl

Sat 1/17

4:44 pm-1:54 pm

1 stop23h 10m

$479

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Thu 2/19

6:00 am-4:19 pm

1 stop8h 19m

Toronto Pearson Intl

Sun 2/22

4:43 pm-12:00 pm

1 stop21h 17m

$484

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sun 1/25

5:50 am-3:02 pm

1 stop7h 12m

Toronto Pearson Intl

Wed 1/28

3:45 pm-9:58 pm

1 stop8h 13m

$504

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Fri 1/23

11:43 am-9:17 pm

1 stop7h 34m

Montreal Pierre Elliott Trudeau Intl

Sun 1/25

6:00 am-11:02 am

1 stop7h 02m

$593

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Mon 12/22

9:39 am-4:23 pm

2 stops28h 44m

$438

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sun 1/4

12:22 pm-10:56 am

1 stop20h 34m

$445

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Mon 12/22

6:00 am-3:06 pm

1 stop7h 06m

$482

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sun 1/4

7:36 am-11:19 pm

2 stops13h 43m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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, June is the cheapest month in which you can book a flight from Colorado Springs to Region of Ontario (average of $129). Flying from Colorado Springs to Region of Ontario in February is currently the most expensive (average of $232). 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 December 14, 2025.
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
8,008 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

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
9,092 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

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 $378, United Airlines can have you in Region of Ontario from Colorado Springs in 11h 02m. 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, June is the cheapest month in which you can book a flight from Colorado Springs to Region of Ontario (average of $129). Flying from Colorado Springs to Region of Ontario in February is currently the most expensive (average of $232). 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.

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Alternative routes for Colorado Springs to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$144Average$176FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$180Average$504FlexibilityNo cancel feeOn-time69%

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