$174+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Nov 28 — Dec 51
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 October 29, 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 October 29, 2026.
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/237:48 pm -
1 stop6h 11m
Tue 12/17:45 pm -
2 stops12h 02m
Deal found 10/27![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/149:01 am -
1 stop5h 32m
Tue 11/179:25 am -
2 stops11h 33m
Deal found 10/24![United Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/67:48 pm -
1 stop5h 58m
Sun 11/812:42 pm -
1 stop7h 01m
Deal found 10/28![American Airlines logo]()
$488
This American Airlines deal was found by Cheapflights users on 10/27. 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 10/306:00 am -
2 stops11h 16m
Sun 11/16:00 am -
1 stop8h 41m
Deal found 10/27![American Airlines logo]()
$554
This American Airlines deal was found by Cheapflights users on 10/26. 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 12/206:44 pm -
1 stop7h 15m
Thu 12/3110:34 am -
1 stop5h 27m
Deal found 10/26![American Airlines logo]()
$559
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 October 29, 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 October 29, 2026.
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/237:48 pm -
1 stop6h 11m
Tue 12/16:00 am -
1 stop8h 38m
Deal found 10/27![American Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 10/24. 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 2/169:05 am -
1 stop5h 34m
Tue 3/21:45 pm -
1 stop5h 08m
Deal found 10/24![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/24. 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 2/1711:35 am -
1 stop9h 07m
Wed 3/31:45 pm -
1 stop5h 08m
Deal found 10/24![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/24. 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 2/168:00 am -
1 stop9h 22m
Sat 3/61:00 pm -
1 stop5h 30m
Deal found 10/24![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/24. 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 2/169:05 am -
1 stop5h 34m
Mon 3/11:45 pm -
1 stop5h 08m
Deal found 10/24![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/28. 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 2/38:53 am -
1 stop5h 47m
Sat 2/611:20 am -
2 stops10h 10m
Deal found 10/28![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/149:01 am -
1 stop5h 32m
Tue 11/179:25 am -
2 stops11h 33m
Deal found 10/24![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 10/28. 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 2/38:53 am -
2 stops10h 42m
Sun 2/76:37 pm -
2 stops14h 09m
Deal found 10/28![United Airlines logo]()
$469
Last-minute flights from Columbia to OntarioDiscover last-minute flight deals from Columbia to Ontario. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from Columbia to Ontario. Data last updated October 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/27. 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 10/306:00 am -
2 stops11h 16m
Sun 11/16:00 am -
1 stop8h 41m
Deal found 10/27![American Airlines logo]()
$554
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/67:48 pm -
1 stop5h 58m
Sun 11/812:42 pm -
1 stop7h 01m
Deal found 10/28![American Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/149:01 am -
1 stop5h 32m
Tue 11/179:25 am -
2 stops11h 33m
Deal found 10/24![United Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/237:48 pm -
1 stop6h 11m
Tue 12/17:45 pm -
2 stops12h 02m
Deal found 10/27![American Airlines logo]()
$354
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 October 29, 2026.
Search for one-way flight options from Columbia to Ontario. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
This American Airlines deal was found by Cheapflights users on 10/29. 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 12/216:44 pm -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![American Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/109:01 am -
1 stop5h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![United Airlines logo]()
$493
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/213:10 pm -
2 stops31h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 10/26. 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 12/263:10 pm -
1 stop9h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$643
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/299:01 am -
1 stop13h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![United Airlines logo]()
$804
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 October 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $354 (American Airlines) |
One-way from | $174 (American Airlines) |
Popular in | July |
Cheapest in | March |
Average price | $538 |
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 October 29, 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 Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Mon 12/21
6:44 pm-11:59 pm
1 stop7h 15m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$174
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Mon 11/23
7:48 pm-11:59 pm
1 stop6h 11m
Ontario
Tue 12/1
6:00 am-4:38 pm
1 stop8h 38m
$418
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Tue 2/16
9:05 am-12:39 pm
1 stop5h 34m
Ontario
Tue 3/2
1:45 pm-8:53 pm
1 stop5h 08m
$458
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Wed 2/17
11:35 am-6:42 pm
1 stop9h 07m
Ontario
Wed 3/3
1:45 pm-8:53 pm
1 stop5h 08m
$458
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Tue 2/16
8:00 am-3:22 pm
1 stop9h 22m
Ontario
Sat 3/6
1:00 pm-8:30 pm
1 stop5h 30m
$458
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Tue 2/16
9:05 am-12:39 pm
1 stop5h 34m
Ontario
Mon 3/1
1:45 pm-8:53 pm
1 stop5h 08m
$458
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Wed 2/3
8:53 am-12:40 pm
1 stop5h 47m
Ontario
Sat 2/6
11:20 am-11:30 pm
2 stops10h 10m
$464
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Sat 11/14
9:01 am-12:33 pm
1 stop5h 32m
Ontario
Tue 11/17
9:25 am-10:58 pm
2 stops11h 33m
$464
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Wed 2/3
8:53 am-5:35 pm
2 stops10h 42m
Ontario
Sun 2/7
6:37 pm-10:46 am
2 stops14h 09m
$469
ColumbiaOntario
COU Columbia Regional - ONT Ontario
COUONT
Columbia Regional
Mon 12/21
3:10 pm-9:00 pm
2 stops31h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$497
Showing 1-10 of 12 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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 October 29, 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.
Overall
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Overall
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Overall
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
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 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 October 29, 2026.
Columbia and Ontario flights
Browse other Columbia and Ontario flight options. Last updated on October 29, 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 October 29, 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 October 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$328 | Average$408 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$383 | Average$553 | FlexibilityNo cancel fee | On-time71% |