$296+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Jul 15 — Jul 221
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
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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 June 15, 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 June 15, 2026.
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Thu 7/93:25 pm
COU
- ONT
1 stop9h 26m
United Airlines
Mon 7/136:39 pm
ONT
- COU
2 stops13h 34m
United Airlines
Deal found 6/13![United Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/97:26 pm
COU
- ONT
1 stop6h 33m
American Airlines
Tue 7/141:11 pm
ONT
- COU
2 stops7h 09m
American Airlines
Deal found 6/10![American Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/145:19 pm
COU
- ONT
1 stop8h 40m
American Airlines
Mon 7/207:15 pm
ONT
- COU
2 stops12h 46m
American Airlines
Deal found 6/14![American Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/259:00 am
COU
- ONT
1 stop5h 50m
United Airlines
Sat 8/291:18 pm
ONT
- COU
1 stop5h 41m
United Airlines
Deal found 6/11![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/93:25 pm
COU
- ONT
1 stop9h 26m
United Airlines
Tue 7/146:10 am
ONT
- COU
1 stop6h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/97:26 pm
COU
- ONT
1 stop6h 33m
American Airlines
Wed 7/152:15 pm
ONT
- COU
1 stop6h 05m
American Airlines
Deal found 6/10![American Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 10/273:16 pm
COU
- ONT
1 stop9h 10m
United Airlines
Sat 10/311:00 pm
ONT
- COU
1 stop5h 30m
United Airlines
Deal found 6/10![United Airlines logo]()
$448
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 June 15, 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 June 15, 2026.
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/259:00 am
COU
- ONT
1 stop5h 50m
United Airlines
Sat 8/291:18 pm
ONT
- COU
1 stop5h 41m
United Airlines
Deal found 6/11![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 6/15. 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
Wed 7/291:18 pm
ONT
- COU
1 stop5h 21m
United Airlines
Deal found 6/15![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/93:25 pm
COU
- ONT
1 stop9h 26m
United Airlines
Tue 7/146:10 am
ONT
- COU
1 stop6h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 10/273:16 pm
COU
- ONT
1 stop9h 10m
United Airlines
Sat 10/311:00 pm
ONT
- COU
1 stop5h 30m
United Airlines
Deal found 6/10![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Thu 7/910:49 am
COU
- ONT
2 stops13h 48m
United Airlines
Mon 7/136:39 pm
ONT
- COU
2 stops13h 34m
United Airlines
Deal found 6/13![United Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/15. 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 8/143:11 pm
COU
- ONT
1 stop9h 24m
United Airlines
Mon 8/177:13 pm
ONT
- COU
2 stops13h 03m
United Airlines
Deal found 6/15![United Airlines logo]()
$474
Last-minute flights from Columbia to OntarioDiscover last-minute flight deals from Columbia to Ontario. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from Columbia to Ontario. Data last updated June 15, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Mon 6/227:39 pm
COU
- ONT
1 stop6h 20m
American Airlines
Tue 6/307:00 am
ONT
- COU
1 stop7h 49m
American Airlines
Deal found 6/15![American Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Thu 7/93:25 pm
COU
- ONT
1 stop9h 26m
United Airlines
Mon 7/136:39 pm
ONT
- COU
2 stops13h 34m
United Airlines
Deal found 6/13![United Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/97:26 pm
COU
- ONT
1 stop6h 33m
American Airlines
Tue 7/141:11 pm
ONT
- COU
2 stops7h 09m
American Airlines
Deal found 6/10![American Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/93:25 pm
COU
- ONT
1 stop9h 26m
United Airlines
Tue 7/146:10 am
ONT
- COU
1 stop6h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/97:26 pm
COU
- ONT
1 stop6h 33m
American Airlines
Wed 7/152:15 pm
ONT
- COU
1 stop6h 05m
American Airlines
Deal found 6/10![American Airlines logo]()
$434
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/97:26 pm
COU
- ONT
1 stop6h 33m
American Airlines
Mon 7/137:15 pm
ONT
- COU
2 stops12h 46m
American Airlines
Deal found 6/10![American Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/145:19 pm
COU
- ONT
1 stop8h 40m
American Airlines
Mon 7/207:15 pm
ONT
- COU
2 stops12h 46m
American Airlines
Deal found 6/14![American Airlines logo]()
$403
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Mon 7/205:19 pm
COU
- ONT
1 stop7h 13m
American Airlines
Sat 7/252:16 pm
ONT
- COU
1 stop6h 04m
American Airlines
Deal found 6/15![American Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 6/15. 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
Wed 7/291:18 pm
ONT
- COU
1 stop5h 21m
United Airlines
Deal found 6/15![United Airlines logo]()
$408
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 June 15, 2026.
Search for one-way flight options from Columbia to Ontario. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:39 am
COU
- ONT
2 stops24h 24m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$296
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:19 pm
COU
- ONT
1 stop8h 40m
American Airlines
Deal found 6/12![American Airlines logo]()
$318
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Sat 7/46:55 am
COU
- ONT
1 stop8h 25m
American Airlines
Deal found 6/13![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 7/119:14 am
COU
- ONT
1 stop5h 33m
United Airlines
Deal found 6/12![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Sat 7/49:14 am
COU
- ONT
2 stops11h 19m
United Airlines
Deal found 6/13![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 7/1510:49 am
COU
- ONT
2 stops13h 48m
United Airlines
Deal found 6/12![United Airlines logo]()
$370
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Sun 6/285:19 pm
COU
- ONT
1 stop7h 20m
American Airlines
Deal found 6/13![American Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Tue 6/308:00 am
COU
- ONT
2 stops9h 29m
United Airlines
Deal found 6/13![United Airlines logo]()
$424
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 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $338 (United Airlines) |
One-way from | $296 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $478 |
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 15, 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
Quickest round-trip
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Tue 8/25
9:00 am-12:50 pm
1 stop5h 50m
Ontario
Sat 8/29
1:18 pm-8:59 pm
1 stop5h 41m
$408
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Tue 7/21
3:25 pm-10:51 pm
1 stop9h 26m
Ontario
Wed 7/29
1:18 pm-8:39 pm
1 stop5h 21m
$408
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Thu 7/9
3:25 pm-10:51 pm
1 stop9h 26m
Ontario
Tue 7/14
6:10 am-2:50 pm
1 stop6h 40m
$418
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Tue 10/27
3:16 pm-10:26 pm
1 stop9h 10m
Ontario
Sat 10/31
1:00 pm-8:30 pm
1 stop5h 30m
$448
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Thu 7/9
10:49 am-10:37 pm
2 stops13h 48m
Ontario
Mon 7/13
6:39 pm-10:13 am
2 stops13h 34m
$463
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Fri 8/14
3:11 pm-10:35 pm
1 stop9h 24m
Ontario
Mon 8/17
7:13 pm-10:16 am
2 stops13h 03m
$474
Cheapest one-way
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Sat 7/11
9:39 am-8:03 am
2 stops24h 24m
$296
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Sat 7/11
5:19 pm-11:59 pm
1 stop8h 40m
$318
Quickest one-way
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Sat 7/11
9:14 am-12:47 pm
1 stop5h 33m
$364
ColumbiaOntario
COU - ONT
COUONT
Columbia Regional
Sat 7/4
9:14 am-6:33 pm
2 stops11h 19m
$369
Showing 1-10 of 13 resultsSorted 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 June.
| 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 June 15, 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
6.6
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Food
6.6
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Food
6.6
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
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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Alternative routes for Columbia to Ontario
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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 June 15, 2026.
Columbia and Ontario flights
Browse other Columbia and Ontario flight options. Last updated on June 15, 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 June 15, 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 2,558,603 searches. Data last updated June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$327 | Average$383 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$476 | Average$556 | FlexibilityNo cancel fee | On-time71% |