$377+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Oct 12 — Oct 191
Round-trip
1 adult, Economy
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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
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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
Best
Last-minute
One-way
Cheapest flights from Columbia to OntarioExplore 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 12, 2026.
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 12, 2026.
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.
Thu 10/16:26 pm -
1 stop7h 10m
Sun 10/47:11 pm -
2 stops12h 47m
Deal found 9/11![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/289:01 am -
1 stop5h 32m
Wed 11/41:29 pm -
1 stop5h 12m
Deal found 9/9![United Airlines logo]()
$418
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.
Sat 11/1411:20 am -
1 stop9h 27m
Tue 11/179:25 am -
2 stops11h 33m
Deal found 9/10![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/9. 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 12/39:00 am -
2 stops13h 29m
Mon 12/146:40 pm -
2 stops13h 55m
Deal found 9/9![United Airlines logo]()
$464
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.
Sat 9/264:51 pm -
1 stop7h 46m
Wed 9/307:20 am -
1 stop6h 59m
Deal found 9/10![American Airlines logo]()
$468
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/234:51 pm -
1 stop7h 46m
Sun 9/277:11 pm -
2 stops12h 45m
Deal found 9/7![American Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/229:00 am -
1 stop5h 50m
Sat 9/261:22 pm -
1 stop5h 11m
Deal found 9/7![United Airlines logo]()
$508
Best flights from Columbia to OntarioDiscover carefully curated flight deals from Columbia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from Columbia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This American Airlines deal was found by Cheapflights users on 9/7. 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 1/810:17 am -
2 stops10h 29m
Wed 1/136:00 am -
1 stop8h 41m
Deal found 9/7![American Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/289:01 am -
1 stop5h 32m
Wed 11/41:29 pm -
1 stop5h 12m
Deal found 9/9![United Airlines logo]()
$418
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.
Sat 11/1411:20 am -
1 stop9h 27m
Tue 11/179:25 am -
2 stops11h 33m
Deal found 9/10![United Airlines logo]()
$424
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.
Sat 9/264:51 pm -
1 stop7h 46m
Wed 9/307:20 am -
1 stop6h 59m
Deal found 9/10![American Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:00 am -
2 stops12h 01m
Wed 11/41:29 pm -
1 stop5h 12m
Deal found 9/12![United Airlines logo]()
$444
Last-minute flights from Columbia to OntarioDiscover last-minute flight deals from Columbia to Ontario. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Columbia to Ontario. Data last updated September 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/229:00 am -
1 stop5h 50m
Sat 9/261:22 pm -
1 stop5h 11m
Deal found 9/7![United Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/234:51 pm -
1 stop7h 46m
Sun 9/277:11 pm -
2 stops12h 45m
Deal found 9/7![American Airlines logo]()
$485
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.
Sat 9/264:51 pm -
1 stop7h 46m
Wed 9/307:20 am -
1 stop6h 59m
Deal found 9/10![American Airlines logo]()
$468
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.
Thu 10/16:26 pm -
1 stop7h 10m
Sun 10/47:11 pm -
2 stops12h 47m
Deal found 9/11![American Airlines logo]()
$389
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.
Fri 10/23:43 pm -
1 stop9h 06m
Sun 10/46:32 pm -
2 stops14h 07m
Deal found 9/11![United Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:00 am -
2 stops12h 01m
Wed 11/41:29 pm -
1 stop5h 12m
Deal found 9/12![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/289:01 am -
1 stop5h 32m
Wed 11/41:29 pm -
1 stop5h 12m
Deal found 9/9![United Airlines logo]()
$418
One-way flights from Columbia to OntarioSearch for one-way flight options from Columbia to Ontario. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from Columbia to Ontario. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
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.
Mon 12/79:00 am -
2 stops26h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/293:19 pm -
1 stop9h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/2511:15 am -
2 stops13h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$439
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.
Mon 9/219:00 am -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$508
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.
Sun 10/116:15 am -
1 stop18h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$632
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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $389 (American Airlines) |
One-way from | $377 (United Airlines) |
Popular in | May |
Cheapest in | January |
Average price | $363 |
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 7,457,451 searches. Data last updated September 12, 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
Cheapest round-trip
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Mon 12/7
9:00 am-9:38 am
2 stops26h 38m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$377
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Fri 1/8
10:17 am-6:46 pm
2 stops10h 29m
Ontario
Wed 1/13
6:00 am-4:41 pm
1 stop8h 41m
$404
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Wed 10/28
9:01 am-12:33 pm
1 stop5h 32m
Ontario
Wed 11/4
1:29 pm-8:41 pm
1 stop5h 12m
$418
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Tue 9/29
3:19 pm-10:49 pm
1 stop9h 30m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$423
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Sat 11/14
11:20 am-6:47 pm
1 stop9h 27m
Ontario
Tue 11/17
9:25 am-10:58 pm
2 stops11h 33m
$424
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Fri 9/25
11:15 am-10:59 pm
2 stops13h 44m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$439
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Tue 10/27
8:00 am-6:01 pm
2 stops12h 01m
Ontario
Wed 11/4
1:29 pm-8:41 pm
1 stop5h 12m
$444
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Sat 9/26
4:51 pm-10:37 pm
1 stop7h 46m
Ontario
Wed 9/30
7:20 am-4:19 pm
1 stop6h 59m
$468
Quickest round-trip
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Mon 9/21
9:00 am-12:50 pm
1 stop5h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$508
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Sun 10/11
6:15 am-10:49 pm
1 stop18h 34m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$632
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
COU-ONT
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 September 12, 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.
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
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.
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Complete your trip
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Other flight options
Other flights from Columbia
Popular flights
Alternative routes for Columbia to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Columbia to Ontario by cabin class
Find flights from Columbia to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
Columbia and Ontario flights
Browse other Columbia and Ontario flight options. Last updated on September 12, 2026.
Other flights from Columbia
Browse through other flights departing from Columbia. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$327 | Average$404 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$388 | Average$556 | FlexibilityNo cancel fee | On-time71% |