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$154+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
COS — YYZ
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find 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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:26 pmCOS - YYZ
2 stops36h 42mMultiple Airlines
Sun 12/72:20 pmYYZ - COS
1 stop20h 40mMultiple Airlines
Deal found 10/30$403
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 12/612:38 pmCOS - YYZ
1 stop21h 52mAmerican Airlines
Wed 12/106:10 amYYZ - COS
1 stop7h 36mAmerican Airlines
Deal found 10/28$472
This Delta deal was found by Cheapflights users on 10/28. 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 11/201:42 pmCOS - YYZ
1 stop8h 17mDelta
Mon 11/246:10 amYYZ - COS
1 stop8h 27mDelta
Deal found 10/28$504
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 11/2312:36 pmCOS - YYZ
1 stop20h 16mAmerican Airlines
Mon 12/16:10 amYYZ - COS
1 stop19h 38mAmerican Airlines
Deal found 10/30$536
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/275:45 amCOS - YYZ
2 stops28h 09mAmerican Airlines
Mon 12/15:13 pmYYZ - COS
1 stop18h 41mAmerican Airlines
Deal found 10/28$544
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 12/124:59 pmCOS - YUL
2 stops17h 21mAmerican Airlines
Fri 12/197:08 amYUL - COS
2 stops18h 39mAmerican Airlines
Deal found 10/28$655
This Air Canada deal was found by Cheapflights users on 10/28. 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.
Fri 12/1212:50 pmCOS - YUL
1 stop19h 20mMultiple Airlines
Fri 12/195:25 pmYUL - COS
1 stop8h 34mMultiple Airlines
Deal found 10/28$864

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$372
(United Airlines)

One-way from

$154
(United Airlines)

Popular in

November

Cheapest in

March

Average price

$533
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
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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

Tue 4/7

5:13 pm-1:45 pm

2 stops18h 32m

Ottawa

Wed 4/8

5:25 pm-11:59 pm

2 stops8h 34m

$377

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sat 12/6

12:38 pm-10:56 am

1 stop20h 18m

Toronto Pearson Intl

Wed 12/10

6:00 am-5:35 pm

2 stops13h 35m

$449

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Thu 12/4

3:26 pm-7:40 pm

1 stop26h 14m

Toronto Pearson Intl

Sun 12/7

2:20 pm-9:00 am

1 stop20h 40m

$449

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Thu 11/20

1:42 pm-11:59 pm

1 stop8h 17m

Toronto Pearson Intl

Mon 11/24

6:10 am-12:37 pm

1 stop8h 27m

$504

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sat 11/22

4:37 pm-1:12 pm

1 stop18h 35m

Toronto Pearson Intl

Tue 11/25

6:10 am-11:48 am

1 stop7h 38m

$504

Colorado SpringsToronto

COS - YYZ

COSYYZ

Colorado Springs

Sun 11/23

5:45 am-4:34 pm

2 stops8h 49m

Toronto Pearson Intl

Mon 12/1

5:13 pm-9:54 am

1 stop18h 41m

$514

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Sun 4/5

1:00 pm-10:11 am

1 stop19h 11m

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

9:25 am-11:18 am

1 stop27h 53m

$630

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Fri 12/12

4:59 pm-12:20 pm

2 stops17h 21m

Montreal Pierre Elliott Trudeau Intl

Fri 12/19

7:08 am-11:47 pm

2 stops18h 39m

$655

Colorado SpringsMontreal

COS - YUL

COSYUL

Colorado Springs

Sun 4/5

6:00 am-6:49 pm

2 stops10h 49m

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

9:28 am-9:25 pm

2 stops13h 57m

$785

Colorado SpringsOttawa

COS - YOW

COSYOW

Colorado Springs

Wed 11/26

12:54 pm-11:54 pm

2 stops9h 00m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 18 results
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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 October 30, 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
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 $504, United Airlines can have you in Region of Ontario from Colorado Springs in 8h 17m. Airlines will cover a distance of 1339 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Colorado Springs to Region of Ontario one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $154. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Colorado Springs to Region of Ontario for a low price.

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

    While some choose either Colorado Springs - Ottawa or Colorado Springs - Montreal Pierre Elliott Trudeau Intl, Colorado Springs - Toronto Pearson 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.

See more FAQs

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$144Average$176FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$180Average$514FlexibilityNo cancel feeOn-time69%

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