$323+ Cheap flights from Ontario to Columbia, MO (ONT - COU)
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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — COU
Sep 21 — Sep 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 August 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 August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/18. 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 10/237:34 pm -
2 stops12h 24m
Sat 10/3110:40 am -
2 stops10h 03m
Deal found 8/18![American Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sat 9/52:43 pm -
1 stop5h 45m
Wed 9/94:51 pm -
1 stop7h 46m
Deal found 8/21![American Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Wed 9/91:18 pm -
1 stop5h 21m
Sat 9/123:11 pm -
1 stop9h 48m
Deal found 8/17![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/11:18 pm -
1 stop5h 41m
Sat 9/53:12 pm -
1 stop9h 23m
Deal found 8/17![United Airlines logo]()
$488
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 August 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 August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/91:18 pm -
1 stop5h 21m
Sat 9/123:11 pm -
1 stop9h 48m
Deal found 8/16![United Airlines logo]()
$418
Last-minute flights from Ontario to ColumbiaDiscover last-minute flight deals from Ontario to Columbia. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Columbia. Data last updated August 22, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/11:18 pm -
1 stop5h 41m
Sat 9/53:12 pm -
1 stop9h 23m
Deal found 8/17![United Airlines logo]()
$488
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sat 9/52:43 pm -
1 stop5h 45m
Wed 9/94:51 pm -
1 stop7h 46m
Deal found 8/21![American Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Wed 9/91:18 pm -
1 stop5h 21m
Sat 9/123:11 pm -
1 stop9h 48m
Deal found 8/17![United Airlines logo]()
$418
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 August 22, 2026.
Search for one-way flight options from Ontario to Columbia. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 12/156:00 am -
1 stop8h 41m
Deal found 8/19![American Airlines logo]()
$323
This American Airlines deal was found by Cheapflights users on 8/19. 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 12/2112:41 pm -
1 stop7h 26m
Deal found 8/19![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 12/166:00 am -
2 stops12h 30m
Deal found 8/19![United Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 12/155:00 am -
2 stops14h 33m
Deal found 8/19![United Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Sun 12/2011:52 pm -
1 stop20h 00m
Deal found 8/19![United Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 8/19. 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 12/1911:52 pm -
1 stop20h 00m
Deal found 8/19![United Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/39:01 am -
2 stops11h 54m
Deal found 8/20![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Sun 8/307:13 pm -
2 stops13h 03m
Deal found 8/19![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 12/175:55 am -
2 stops13h 57m
Deal found 8/19![United Airlines logo]()
$563
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/41:18 pm -
1 stop5h 41m
Deal found 8/20![United Airlines logo]()
$584
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (American Airlines) |
One-way from | $323 (United Airlines) |
Popular in | June |
Cheapest in | December |
Average price | $338 |
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 August 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
Quickest round-trip
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Wed 9/9
1:18 pm-8:39 pm
1 stop5h 21m
Columbia Regional
Sat 9/12
3:11 pm-10:59 pm
1 stop9h 48m
$418
Cheapest one-way
Quickest one-way
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Thu 12/17
12:41 pm-10:07 pm
1 stop7h 26m
$323
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Wed 12/16
6:00 am-8:30 pm
2 stops12h 30m
$370
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Tue 12/15
5:00 am-9:33 pm
2 stops14h 33m
$377
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sat 12/19
11:52 pm-9:52 pm
1 stop20h 00m
$417
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Fri 9/4
9:01 am-10:55 pm
2 stops11h 54m
$429
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sun 12/20
5:00 am-9:52 pm
2 stops14h 52m
$467
OntarioColumbia
ONT Ontario - COU Columbia Regional
ONTCOU
Ontario
Sun 8/30
7:13 pm-10:16 am
2 stops13h 03m
$504
Sorted 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 August.
| 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 August 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.
Food
6.7
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Columbia flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Columbia
See prices for flight routes from nearby airports that may be better suited for you.
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 August 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 August 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 August 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 August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$418 | Average$425 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$418 | Average$570 | FlexibilityNo cancel fee | On-time71% |