HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$323+ Cheap flights from Columbia, MO to Ontario (COU - 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Columbia 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 Columbia to Ontario

Cheapest flights from Columbia to Ontario
Explore the most affordable flight options available from Columbia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This American Airlines deal was found by Cheapflights users on 7/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:51 pm
COU
-
ONT
1 stop7h 46m
American Airlines
Sat 9/266:00 am
ONT
-
COU
1 stop8h 19m
American Airlines
Deal found 7/25$389
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/293:12 pm
COU
-
ONT
1 stop9h 23m
United Airlines
Tue 9/11:18 pm
ONT
-
COU
1 stop5h 41m
United Airlines
Deal found 7/26$418
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:14 pm
COU
-
ONT
1 stop5h 57m
American Airlines
Tue 11/37:00 am
ONT
-
COU
1 stop7h 41m
American Airlines
Deal found 7/27$479
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 9/193:11 pm
COU
-
ONT
1 stop9h 48m
United Airlines
Sat 9/265:00 am
ONT
-
COU
1 stop13h 33m
United Airlines
Deal found 7/26$496
This United Airlines deal was found by Cheapflights users on 7/23. 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 11/49:00 am
COU
-
ONT
1 stop13h 56m
United Airlines
Sat 11/76:46 am
ONT
-
COU
1 stop8h 37m
United Airlines
Deal found 7/23$501
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:17 pm
COU
-
ONT
1 stop7h 42m
American Airlines
Sun 8/167:05 am
ONT
-
COU
1 stop7h 42m
American Airlines
Deal found 7/26$514
This American Airlines deal was found by Cheapflights users on 7/23. 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 7/307:26 pm
COU
-
ONT
1 stop6h 33m
American Airlines
Thu 8/62:27 pm
ONT
-
COU
1 stop6h 01m
American Airlines
Deal found 7/23$523
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 9/1811:17 am
COU
-
ONT
2 stops13h 34m
United Airlines
Sun 9/207:13 pm
ONT
-
COU
2 stops13h 26m
United Airlines
Deal found 7/27$529

Find flight deals from Columbia to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Columbia (COU) 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$328
(United Airlines)

One-way from

$323
(American Airlines)

Popular in

May

Cheapest in

January

Average price

$448
Provider with most accurate pricing for Columbia Regional-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Columbia Regional-Ontario flights.
Search Deals
From Columbia Regional to Ontario
Search Deals
One-way flight from Columbia Regional to Ontario
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Columbia 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 July 28, 2026.
Use the filters below to find and compare flights from Columbia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 9/19

3:11 pm-10:59 pm

1 stop9h 48m

Ontario

Wed 9/23

1:18 pm-8:39 pm

1 stop5h 21m

$418

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 8/29

3:12 pm-10:35 pm

1 stop9h 23m

Ontario

Tue 9/1

1:18 pm-8:59 pm

1 stop5h 41m

$418
Quickest round-trip

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 9/26

3:19 pm-10:49 pm

1 stop9h 30m

Ontario

Tue 9/29

1:22 pm-8:33 pm

1 stop5h 11m

$418

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 9/9

3:12 pm-10:59 pm

1 stop9h 47m

Ontario

Wed 9/16

1:18 pm-8:39 pm

1 stop5h 21m

$418

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 9/12

3:11 pm-10:59 pm

1 stop9h 48m

Ontario

Wed 9/16

1:18 pm-8:39 pm

1 stop5h 21m

$418

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 9/19

3:11 pm-10:59 pm

1 stop9h 48m

Ontario

Tue 9/22

1:18 pm-8:39 pm

1 stop5h 21m

$418
Cheapest one-way

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 8/22

5:17 pm-10:59 pm

1 stop7h 42m

$323
Quickest one-way

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Tue 9/15

9:00 am-12:50 pm

1 stop5h 50m

$323

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Fri 8/21

5:17 pm-10:59 pm

1 stop7h 42m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Sorted by cheapest first

Compare providers for flights from Columbia 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 Columbia to Ontario in July.
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 Columbia, Missouri-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Columbia, Missouri-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Columbia, Missouri-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Columbia, Missouri-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 Columbia, Missouri-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 Columbia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Columbia 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.

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 July 28, 2026.
See what other customers who have flown with United Airlines and American Airlines from Columbia to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,041 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
10,041 reviews
United Airlines
7.4
Good
10,041 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
American Airlines
7.1
Good
11,836 reviews
United Airlines
7.4
Good
10,041 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

Find useful and relevant information for your journey from Columbia 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 Columbia, Missouri to Ontario?

    United Airlines can get you from Columbia, Missouri to Ontario in just under 9h 48m. Your travel time can differ by up to . Airlines will cover a distance of 1442 mi.

  • What are the cheapest airlines flying from Columbia, Missouri to Ontario round-trip?

    Our cheapest airline available from Columbia, Missouri to Ontario is United Airlines. Our recent data shows that you can find tickets from as low as $327 on this airline. An additional option worth looking into is American Airlines, starting at $476.

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

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

  • How can I find direct flights from Columbia to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Columbia 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.

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 Columbia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Las Vegas flights
Kansas City to Las Vegas flights
Kansas City to Los Angeles flights
St. Louis to Los Angeles flights
St. Louis to San Francisco flights
Kansas City to San Diego flights
Kansas City to San Francisco flights
St. Louis to San Diego flights
Kansas City to Ontario flights
Springfield to San Diego flights
Kansas City to Sacramento flights
St. Louis to Sacramento flights
St. Louis to Ontario flights
Kansas City to Santa Ana flights
St. Louis to Reno flights
St. Louis to Santa Ana flights
Kansas City to San Jose flights
St. Louis to Long Beach flights
St. Louis to Oakland flights
St. Louis to Burbank flights
Columbia to Las Vegas flights
Springfield to Las Vegas flights
Kansas City to Oakland flights
Springfield to Los Angeles flights
Kansas City to Monterey flights
Kansas City to Reno flights
St. Louis to San Jose flights
Springfield to Ontario flights
Kansas City to Fresno flights
Kansas City to Palm Springs flights
St. Louis to Fresno flights
Kansas City to Burbank flights
Springfield to San Francisco flights
Springfield to Santa Ana flights
St. Louis to Palm Springs flights
Columbia to San Diego flights
Kansas City to Long Beach flights
Kansas City to San Luis Obispo flights
Springfield to Burbank flights
St. Louis to Santa Barbara flights
Springfield to Reno flights
Columbia to San Francisco flights
Springfield to Sacramento flights
Springfield to San Jose flights
Kansas City to Santa Barbara flights
Kansas City to Medford flights
Columbia to Los Angeles flights
St. Louis to Monterey flights

Top 2 airlines flying from Columbia to Ontario

Discover the top 2 airlines that operate flights from Columbia 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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$327Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$476Average$556FlexibilityNo cancel feeOn-time71%

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.
Site
©2026 Cheapflights