HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$106+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
COS — ONT
jul. 19 — jul. 261
sáb. 7/19
sáb. 7/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado Springs to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 julio 14, 2025.

Round-trip from

$213
(Southwest)

One-way from

$106
(American Airlines)

Popular in

January

Cheapest in

June

Average price

$397
From Colorado Springs to Ontario
Search Deals
One-way flight from Colorado Springs to Ontario
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 julio 14, 2025.

This Southwest deal was found by Cheapflights users on 7/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/125:50 pmCOS - ONT
1 stop4h 10mSouthwest
mar. 8/1910:20 amONT - COS
1 stop7h 55mSouthwest
Deal found 7/13$213
This Delta deal was found by Cheapflights users on 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/95:55 pmCOS - ONT
1 stop6h 22mDelta
mié. 8/134:50 pmONT - COS
1 stop4h 28mDelta
Deal found 7/12$217
This American Airlines deal was found by Cheapflights users on 7/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2010:54 amCOS - ONT
1 stop8h 30mAmerican Airlines
dom. 8/2412:22 pmONT - COS
2 stops10h 22mAmerican Airlines
Deal found 7/13$237
This United Airlines deal was found by Cheapflights users on 7/13. 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.
jue. 8/73:35 pmCOS - ONT
1 stop6h 19mUnited Airlines
lun. 8/116:31 pmONT - COS
1 stop4h 21mUnited Airlines
Deal found 7/13$283

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 julio 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 SpringsOntario

COS - ONT

COSONT

Colorado Springs

mar. 8/12

5:50 pm-9:00 pm

1 stop4h 10m

Ontario

mar. 8/19

10:20 am-7:15 pm

1 stop7h 55m

$213

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

sáb. 8/9

5:55 pm-11:17 pm

1 stop6h 22m

Ontario

mié. 8/13

4:50 pm-10:18 pm

1 stop4h 28m

$217

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

mié. 8/20

10:54 am-6:24 pm

1 stop8h 30m

Ontario

dom. 8/24

12:22 pm-11:44 pm

2 stops10h 22m

$237

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

jue. 8/7

3:35 pm-8:54 pm

1 stop6h 19m

Ontario

lun. 8/11

6:31 pm-11:52 pm

1 stop4h 21m

$283

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

mié. 8/13

6:27 am-11:52 am

1 stop6h 25m

$106

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

jue. 8/14

5:55 pm-11:40 pm

1 stop6h 45m

$109

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

dom. 8/31

7:30 am-12:32 pm

1 stop6h 02m

$142

Colorado SpringsOntario

COS - ONT

COSONT

Colorado Springs

lun. 7/28

6:35 pm-11:55 pm

1 stop6h 20m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

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, August is the cheapest month in which you can book a flight from Colorado Springs to Ontario (average of $246). Flying from Colorado Springs to Ontario in March is currently the most expensive (average of $328). 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.

What is the cheapest time of day to fly from COS to ONT?

Find hourly flight availability from Colorado Springs to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 14, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 14% on flights from Colorado Springs to Ontario by exploring options for tickets in the evening.

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 julio 14, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United 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
4,243 reviews

Food

7.0

Overall

8.0

Entertainment

7.6

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Entertainment

7.6

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,953 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Entertainment

7.6

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,856 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Entertainment

7.6

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Overall

8.0

Entertainment

7.6

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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

    Our cheapest airline available from Colorado Springs to Ontario is Southwest. Our recent data shows that you can find tickets from as low as $213 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $217 and $237 round-trip. Users have found that Southwest is 49% cheaper than the other options available to this destination.

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

    $106 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $109 and $142, respectively.

  • 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, August is the cheapest month in which you can book a flight from Colorado Springs to Ontario (average of $246). Flying from Colorado Springs to Ontario in March is currently the most expensive (average of $328). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado Springs to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to San Francisco flights
Denver to Los Angeles flights
Denver to San Diego flights
Denver to Santa Ana flights
Denver to Ontario flights
Denver to Reno flights
Denver to San Jose flights
Denver to Sacramento flights
Denver to Burbank flights
Colorado Springs to Las Vegas flights
Denver to Palm Springs flights
Denver to Oakland flights
Denver to Santa Barbara flights
Denver to Monterey flights
Denver to Fresno flights
Denver to Medford flights
Denver to San Luis Obispo flights
Denver to Long Beach flights
Colorado Springs to Los Angeles flights
Durango to San Francisco flights
Grand Junction to Los Angeles flights
Denver to Arcata flights
Colorado Springs to San Diego flights
Grand Junction to San Diego flights
Montrose to San Diego flights
Denver to Santa Rosa flights
Durango to San Jose flights
Aspen to San Francisco flights
Denver to Bakersfield flights
Colorado Springs to Sacramento flights
Montrose to Los Angeles flights
Aspen to Los Angeles flights
Durango to Las Vegas flights
Montrose to San Jose flights
Colorado Springs to San Francisco flights
Durango to San Diego flights
Vail to San Francisco flights
Colorado Springs to Reno flights
Colorado Springs to Santa Ana flights
Montrose to Burbank flights
Denver to Tijuana flights
Montrose to San Francisco flights
Montrose to Ontario flights
Denver to Redding flights
Durango to Los Angeles flights
Vail to San Diego flights
Grand Junction to Las Vegas flights
Grand Junction to Sacramento flights

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 julio 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$295FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$272Average$403FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$426FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.