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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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Jul 7 — Jul 141
Tue 7/7
Tue 7/14
1 adult, Economy
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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 June 7, 2026.

This United Airlines deal was found by Cheapflights users on 6/5. 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 7/33:25 pm
COU
-
ONT
1 stop9h 26m
United Airlines
Sat 7/46:10 am
ONT
-
COU
1 stop6h 40m
United Airlines
Deal found 6/5$328
This American Airlines deal was found by Cheapflights users on 6/4. 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 7/27:26 pm
COU
-
ONT
1 stop6h 33m
American Airlines
Thu 7/91:11 pm
ONT
-
COU
2 stops7h 09m
American Airlines
Deal found 6/4$384
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/213:25 pm
COU
-
ONT
1 stop9h 26m
United Airlines
Sat 7/251:18 pm
ONT
-
COU
1 stop5h 21m
United Airlines
Deal found 6/3$408
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Thu 7/93:25 pm
COU
-
ONT
1 stop9h 26m
United Airlines
Sat 7/111:18 pm
ONT
-
COU
1 stop5h 21m
United Airlines
Deal found 6/6$418
This United Airlines deal was found by Cheapflights users on 6/6. 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 10/279:00 am
COU
-
ONT
2 stops10h 47m
United Airlines
Sat 10/311:00 pm
ONT
-
COU
1 stop5h 30m
United Airlines
Deal found 6/6$424
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Tue 8/45:19 pm
COU
-
ONT
1 stop7h 13m
American Airlines
Thu 8/137:06 am
ONT
-
COU
1 stop7h 41m
American Airlines
Deal found 6/4$469
This United Airlines deal was found by Cheapflights users on 6/4. 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 8/410:49 am
COU
-
ONT
2 stops13h 48m
United Airlines
Tue 8/111:18 pm
ONT
-
COU
1 stop5h 41m
United Airlines
Deal found 6/4$474
This American Airlines deal was found by Cheapflights users on 6/3. 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 7/187:26 pm
COU
-
ONT
1 stop6h 33m
American Airlines
Sat 7/252:16 pm
ONT
-
COU
1 stop6h 04m
American Airlines
Deal found 6/3$489
This United Airlines deal was found by Cheapflights users on 6/4. 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 10/1011:15 am
COU
-
ONT
2 stops11h 01m
United Airlines
Tue 10/131:18 pm
ONT
-
COU
1 stop5h 12m
United Airlines
Deal found 6/4$495

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 June 7, 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

$472
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. 17% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 7, 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

Fri 7/3

3:25 pm-10:51 pm

1 stop9h 26m

Ontario

Sat 7/4

6:10 am-2:50 pm

1 stop6h 40m

$328

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 6/25

3:25 pm-10:51 pm

1 stop9h 26m

Ontario

Fri 7/3

1:18 pm-8:39 pm

1 stop5h 21m

$571

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Fri 8/21

10:55 am-8:01 pm

2 stops11h 06m

Ontario

Sun 8/23

7:13 pm-10:16 am

2 stops13h 03m

$574
Quickest round-trip

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 6/11

9:14 am-12:47 pm

1 stop5h 33m

Ontario

Wed 6/17

1:18 pm-8:39 pm

1 stop5h 21m

$578

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 7/9

3:25 pm-10:51 pm

1 stop9h 26m

Ontario

Thu 7/16

6:10 am-10:13 am

1 stop26h 03m

$636

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sat 7/11

9:14 am-12:47 pm

1 stop5h 33m

Ontario

Sat 7/18

1:18 pm-8:39 pm

1 stop5h 21m

$645

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 7/22

10:49 am-10:37 pm

2 stops13h 48m

Ontario

Sat 7/25

5:45 am-11:33 pm

2 stops15h 48m

$723

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 7/22

10:49 am-10:37 pm

2 stops13h 48m

Ontario

Fri 7/24

1:50 pm-10:13 am

2 stops18h 23m

$723

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 6/10

9:14 am-12:47 pm

1 stop5h 33m

Ontario

Wed 6/17

1:18 pm-8:39 pm

1 stop5h 21m

$724

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 6/10

10:48 am-10:37 pm

2 stops13h 49m

Ontario

Sun 6/14

1:18 pm-8:39 pm

1 stop5h 21m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 June.
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 June 7, 2026.
See what other customers who have flown with 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.
American Airlines
7.1
Good
11,648 reviews

Comfort

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Overall

7.1

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,648 reviews
American Airlines
7.1
Good
11,648 reviews

Comfort

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Overall

7.1

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 26m. Your travel time can differ by up to . Airlines will cover a distance of 1442 mi.

  • What is the cheapest airline to fly from Columbia, Missouri to Ontario round-trip?

    Our cheapest airline available from Columbia, Missouri to Ontario is American Airlines. Our recent data shows that you can find tickets from as low as $476 on this airline.

  • 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

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Top airline flying from Columbia to Ontario

Discover the top airline 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 June 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$476Average$556FlexibilityNo cancel feeOn-time71%

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