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Ontario

$109+ Cheap flights from Colorado Springs to Ontario (COS - ONT)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
COS — ONT
Apr 28 — May 51
Tue 4/28
Tue 5/5
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 29, 2026.

This Delta deal was found by Cheapflights users on 3/25. 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.
Sat 4/1811:55 am
COS
-
ONT
1 stop5h 30m
Delta
Tue 4/216:00 am
ONT
-
COS
1 stop4h 12m
Delta
Deal found 3/25$217
This Southwest deal was found by Cheapflights users on 3/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:00 pm
COS
-
ONT
1 stop4h 05m
Southwest
Sat 5/231:20 pm
ONT
-
COS
1 stop6h 25m
Southwest
Deal found 3/28$219
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:20 pm
COS
-
ONT
2 stops6h 45m
Southwest
Tue 6/95:30 am
ONT
-
COS
1 stop4h 05m
Southwest
Deal found 3/27$224
This Delta deal was found by Cheapflights users on 3/25. 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 4/147:59 am
COS
-
ONT
1 stop5h 15m
Delta
Tue 4/216:00 am
ONT
-
COS
1 stop4h 12m
Delta
Deal found 3/25$258
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/2611:31 am
COS
-
ONT
1 stop6h 57m
United Airlines
Sat 5/305:00 am
ONT
-
COS
1 stop4h 46m
United Airlines
Deal found 3/25$280
This Delta deal was found by Cheapflights users on 3/25. 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.
Sat 4/187:59 am
COS
-
ONT
1 stop5h 15m
Delta
Sat 4/185:59 pm
ONT
-
COS
1 stop4h 07m
Delta
Deal found 3/25$283
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:20 pm
COS
-
ONT
2 stops6h 45m
Southwest
Mon 5/45:05 pm
ONT
-
COS
1 stop5h 45m
Southwest
Deal found 3/24$289
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/285:13 pm
COS
-
ONT
1 stop4h 23m
United Airlines
Thu 4/305:00 am
ONT
-
COS
1 stop6h 26m
United Airlines
Deal found 3/26$297
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/215:13 pm
COS
-
ONT
1 stop4h 23m
United Airlines
Sat 4/255:10 am
ONT
-
COS
1 stop4h 55m
United Airlines
Deal found 3/27$299
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/51:25 pm
COS
-
ONT
2 stops10h 34m
United Airlines
Wed 5/65:00 am
ONT
-
COS
1 stop5h 05m
United Airlines
Deal found 3/25$302

Find flight deals from Colorado Springs to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Colorado Springs (COS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Delta)

One-way from

$109
(Southwest)

Popular in

May

Cheapest in

January

Average price

$496
Provider with most accurate pricing for Colorado Springs-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Colorado Springs-Ontario flights.
Search Deals
From Colorado Springs to Ontario
Search Deals
One-way flight from Colorado Springs to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 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 29, 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 SpringsOntario

COS - ONT

COSONT

Colorado Springs

Tue 5/5

5:12 pm-8:36 pm

1 stop4h 24m

Ontario

Wed 5/6

5:00 am-11:05 am

1 stop5h 05m

$297
Quickest round-trip

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Tue 4/21

5:13 pm-8:36 pm

1 stop4h 23m

Ontario

Sat 4/25

5:10 am-11:05 am

1 stop4h 55m

$299

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Mon 5/11

5:20 pm-10:40 pm

1 stop6h 20m

Ontario

Sun 5/24

6:40 am-1:55 pm

1 stop6h 15m

$312

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Wed 6/3

11:31 am-5:28 pm

1 stop6h 57m

Ontario

Wed 6/10

6:30 pm-11:59 pm

1 stop4h 29m

$368

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Mon 7/13

6:40 am-11:20 am

1 stop5h 40m

Ontario

Fri 7/17

5:30 am-11:45 am

1 stop5h 15m

$379

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Sun 4/19

5:05 pm-10:45 pm

2 stops6h 40m

Ontario

Thu 4/23

5:30 am-10:55 am

1 stop4h 25m

$379

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Sat 5/23

8:15 am-12:19 pm

1 stop5h 04m

Ontario

Sun 5/31

6:00 am-11:15 am

1 stop4h 15m

$391

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Sat 7/18

7:15 am-12:45 pm

2 stops6h 30m

Ontario

Sat 7/25

3:00 pm-11:30 pm

2 stops7h 30m

$395
Cheapest one-way

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Mon 4/20

5:20 pm-10:40 pm

1 stop6h 20m

$109

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

Wed 5/27

8:15 am-12:19 pm

1 stop5h 04m

$110

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Colorado Springs to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colorado Springs to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Colorado Springs-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colorado Springs-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Colorado Springs-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Colorado Springs-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colorado Springs-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 Ontario?

Currently, July is the cheapest month in which you can book a flight from Colorado Springs to Ontario (average of $57). Flying from Colorado Springs to Ontario in June is currently the most expensive (average of $97). 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.

How much does it cost to fly round-trip from Colorado Springs to Ontario?

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 29, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Colorado Springs to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,331 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,359 reviews
Southwest
8.0
Very good
4,331 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,510 reviews
Southwest
8.0
Very good
4,331 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

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

    Airlines like United Airlines and Southwest fly from Colorado Springs to Ontario in about 5h 32m. The time it takes to get you to your destination can typically vary by up to 48m. The distance between Colorado Springs and Ontario is about 787 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Colorado Springs to Ontario round-trip?

    Our cheapest airline available from Colorado Springs to Ontario is Delta. Our recent data shows that you can find tickets from as low as $196 on this airline. Additional options worth looking into are Southwest and United Airlines, starting at $212 and $232 round-trip. Users have found that Delta is 47% cheaper than the other options available to this destination.

  • 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 Ontario?

    Currently, July is the cheapest month in which you can book a flight from Colorado Springs to Ontario (average of $57). Flying from Colorado Springs to Ontario in June is currently the most expensive (average of $97). 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

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Top 3 airlines flying from Colorado Springs to Ontario

Discover the top 3 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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$288FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$212Average$380FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$232Average$496FlexibilityNo cancel feeOn-time69%

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