$333+ Cheap flights from Ontario to Columbia, MO (ONT - COU)
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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — COU
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Columbia 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 Ontario to Columbia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to ColumbiaExplore the most affordable flight options available from Ontario to Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Ontario to Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/282:22 pm -
1 stop5h 31m
Thu 11/127:48 pm -
1 stop5h 58m
Deal found 9/21![American Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 9/21. 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 11/410:30 am -
1 stop6h 48m
Thu 11/197:48 pm -
1 stop6h 11m
Deal found 9/21![American Airlines logo]()
$383
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/289:25 am -
2 stops11h 33m
Thu 11/128:00 am -
2 stops14h 15m
Deal found 9/21![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/68:03 am -
2 stops12h 52m
Sat 10/103:19 pm -
1 stop9h 30m
Deal found 9/21![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/241:22 pm -
1 stop5h 11m
Sat 10/319:01 am -
1 stop5h 32m
Deal found 9/17![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/271:29 pm -
1 stop5h 12m
Wed 11/49:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/311:29 pm -
1 stop5h 12m
Wed 11/48:00 am -
2 stops14h 15m
Deal found 9/21![United Airlines logo]()
$464
Best flights from Ontario to ColumbiaDiscover carefully curated flight deals from Ontario to Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Ontario to Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/68:03 am -
2 stops12h 52m
Sat 10/103:19 pm -
1 stop9h 30m
Deal found 9/21![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/241:22 pm -
1 stop5h 11m
Sat 10/319:01 am -
1 stop5h 32m
Deal found 9/17![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/301:32 pm -
1 stop5h 09m
Wed 11/49:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/301:32 pm -
1 stop5h 09m
Tue 11/39:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/19. 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 1/301:00 pm -
1 stop5h 30m
Wed 2/39:00 am -
1 stop5h 33m
Deal found 9/19![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/311:29 pm -
1 stop5h 12m
Wed 11/49:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/301:32 pm -
1 stop5h 09m
Sat 10/319:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
Last-minute flights from Ontario to ColumbiaDiscover last-minute flight deals from Ontario to Columbia. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Columbia. Data last updated September 22, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/68:03 am -
2 stops12h 52m
Sat 10/103:19 pm -
1 stop9h 30m
Deal found 9/21![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/62:22 pm -
1 stop5h 31m
Sat 10/106:39 am -
1 stop8h 51m
Deal found 9/21![American Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/241:22 pm -
1 stop5h 11m
Sat 10/319:01 am -
1 stop5h 32m
Deal found 9/17![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/271:29 pm -
1 stop5h 12m
Tue 11/39:01 am -
1 stop5h 32m
Deal found 9/21![United Airlines logo]()
$458
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/282:22 pm -
1 stop5h 31m
Thu 11/127:48 pm -
1 stop5h 58m
Deal found 9/21![American Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/289:25 am -
2 stops11h 33m
Thu 11/128:00 am -
2 stops14h 15m
Deal found 9/21![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/311:29 pm -
1 stop5h 12m
Wed 11/48:00 am -
2 stops14h 15m
Deal found 9/21![United Airlines logo]()
$464
One-way flights from Ontario to ColumbiaSearch for one-way flight options from Ontario to Columbia. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Ontario to Columbia. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/21. 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 11/31:29 pm -
1 stop5h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![United Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/196:32 pm -
2 stops14h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/192:22 pm -
1 stop5h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![American Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/1311:10 am -
2 stops9h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$430
Find flight deals from Ontario to Columbia
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Columbia (COU). 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 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (American Airlines) |
One-way from | $333 (American Airlines) |
Popular in | June |
Cheapest in | December |
Average price | $433 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Columbia 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 22, 2026.
Use the filters below to find and compare flights from Ontario to Columbia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sat 11/21
2:09 pm-9:43 pm
1 stop5h 34m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$333
Quickest round-trip
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Tue 11/3
1:29 pm-8:41 pm
1 stop5h 12m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$333
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Mon 10/19
6:32 pm-10:39 am
2 stops14h 07m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$339
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sun 11/22
6:30 am-9:43 pm
2 stops13h 13m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$339
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Fri 11/20
2:09 pm-9:43 pm
1 stop5h 34m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$374
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Tue 10/6
8:03 am-10:55 pm
2 stops12h 52m
Columbia Regional
Sat 10/10
3:19 pm-10:49 pm
1 stop9h 30m
$424
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Tue 10/13
11:10 am-10:55 pm
2 stops9h 45m
Columbia Regional
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$430
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sat 10/24
1:22 pm-8:33 pm
1 stop5h 11m
Columbia Regional
Sat 10/31
9:01 am-12:33 pm
1 stop5h 32m
$438
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Fri 10/30
1:32 pm-8:41 pm
1 stop5h 09m
Columbia Regional
Wed 11/4
9:01 am-12:33 pm
1 stop5h 32m
$458
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Fri 10/30
1:32 pm-8:41 pm
1 stop5h 09m
Columbia Regional
Tue 11/3
9:01 am-12:33 pm
1 stop5h 32m
$458
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Ontario to Columbia
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 Ontario to Columbia 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 Ontario-Columbia, Missouri flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Columbia, Missouri flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Columbia, Missouri flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Columbia, Missouri 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 Ontario-Columbia, Missouri 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 Ontario to Columbia
Have a flexible travel schedule? Discover the best time to fly to Columbia from Ontario with our price prediction graph.
ONT-COU
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 Columbia
Get insights into the airlines that provide service to Columbia. 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 Columbia. Reviews last updated September 22, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Ontario to Columbia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Overall
7.4
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Entertainment
7.1
Overall
7.4
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Entertainment
7.1
Overall
7.4
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Columbia?
Book flights to Columbia if you plan to visit one of these locationsJefferson City
Browse thousands of different options on Cheapflights for your next trip
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Other flights to Columbia
Explore flights to Columbia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Complete your trip
Complete your trip to Columbia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Columbia by cabin class
Find flights from Ontario to Columbia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Columbia flights
Browse other Ontario and Columbia flight options. Last updated on September 22, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Columbia
Discover the top 2 airlines that operate flights from Ontario to Columbia. 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 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$328 | Average$519 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$418 | Average$425 | FlexibilityNo cancel fee | On-time69% |