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$476+ Cheap flights from Columbia, MO to Ontario (COU - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$476
(American Airlines)

Popular in

March

Cheapest in

June

Average price

$378
From Columbia Regional to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/244:23 pmCOU - ONT
1 stop8h 10mAmerican Airlines
Sat 9/276:10 amONT - COU
1 stop7h 43mAmerican Airlines
Deal found 9/10$476
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/239:01 amCOU - ONT
1 stop10h 22mUnited Airlines
Sun 10/266:38 pmONT - COU
2 stops24h 13mUnited Airlines
Deal found 9/10$498
This American Airlines deal was found by Cheapflights users on 9/11. 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 9/266:33 pmCOU - ONT
1 stop6h 00mAmerican Airlines
Tue 9/308:15 amONT - COU
1 stop7h 48mAmerican Airlines
Deal found 9/11$523
This American Airlines deal was found by Cheapflights users on 9/10. 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 9/254:23 pmCOU - ONT
1 stop7h 53mAmerican Airlines
Sun 9/288:15 amONT - COU
1 stop7h 27mAmerican Airlines
Deal found 9/10$570
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/149:01 amCOU - ONT
2 stops29h 12mUnited Airlines
Fri 10/176:27 pmONT - COU
1 stop23h 58mUnited Airlines
Deal found 9/11$581

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 September 11, 2025.
Use the filters below to find and compare flights from Columbia to Ontario that are best for you.

Fly from

Columbia

Fly to

Ontario

Route

Depart

Return

Price

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Wed 9/24

4:23 pm-10:33 pm

1 stop8h 10m

Ontario

Sat 9/27

6:10 am-3:53 pm

1 stop7h 43m

$476

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 10/23

9:01 am-5:23 pm

1 stop10h 22m

Ontario

Sun 10/26

6:38 pm-8:51 pm

2 stops24h 13m

$498

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Fri 9/26

6:33 pm-10:33 pm

1 stop6h 00m

Ontario

Tue 9/30

8:15 am-6:03 pm

1 stop7h 48m

$523

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 9/25

4:23 pm-10:16 pm

1 stop7h 53m

Ontario

Sun 9/28

8:15 am-5:42 pm

1 stop7h 27m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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.

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?

    American Airlines and United Airlines can get you from Columbia, Missouri to Ontario in just under 8h 10m. Your travel time can differ by up to 2h 12m. Airlines will cover a distance of 1442 mi. This flight may include one or multiple stops.

  • 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.

  • What is the cheapest month to book a flight from Columbia, Missouri to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Columbia, Missouri to Ontario (average of $246). Flying from Columbia, Missouri 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

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