HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$383+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ONT
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

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 Columbia to Ontario

Cheapest flights from Columbia to Ontario
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/28. 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 3/39:00 am
COU
-
ONT
1 stop5h 43m
United Airlines
Tue 3/1011:59 pm
ONT
-
COU
1 stop8h 34m
United Airlines
Deal found 1/28$383
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 2/38:45 am
COU
-
ONT
1 stop6h 02m
United Airlines
Sat 2/71:24 pm
ONT
-
COU
1 stop5h 09m
United Airlines
Deal found 1/27$478
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 9/123:16 pm
COU
-
ONT
1 stop9h 10m
United Airlines
Mon 9/141:00 pm
ONT
-
COU
1 stop5h 30m
United Airlines
Deal found 1/27$543
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 1/2711:17 am
COU
-
ONT
2 stops11h 41m
United Airlines
Sat 1/311:24 pm
ONT
-
COU
1 stop5h 09m
United Airlines
Deal found 1/26$544

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$383
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$258
Provider with most accurate pricing for Columbia Regional-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Columbia Regional-Ontario flights.
Search Deals
From Columbia Regional to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
Use the filters below to find and compare flights from Columbia to Ontario that are best for you.

Fly from

Columbia

Fly to

Ontario

Route

Depart

Return

Price

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Tue 3/3

9:00 am-12:43 pm

1 stop5h 43m

Ontario

Tue 3/10

11:59 pm-10:33 am

1 stop8h 34m

$383

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Thu 2/26

11:15 am-10:57 pm

2 stops13h 42m

Ontario

Sat 3/7

11:59 pm-9:33 am

1 stop7h 34m

$564

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sun 4/19

8:00 am-10:26 pm

1 stop16h 26m

Ontario

Sat 4/25

1:34 pm-9:03 pm

1 stop5h 29m

$638

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Mon 3/16

9:05 am-12:48 pm

1 stop5h 43m

Ontario

Wed 3/18

11:59 pm-10:33 am

1 stop8h 34m

$678

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Mon 3/16

9:05 am-12:48 pm

1 stop5h 43m

Ontario

Tue 3/17

11:59 pm-10:33 am

1 stop8h 34m

$678

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sun 3/15

2:41 pm-10:18 pm

1 stop9h 37m

Ontario

Wed 3/18

11:59 pm-10:33 am

1 stop8h 34m

$678

ColumbiaOntario

COU - ONT

COUONT

Columbia Regional

Sun 3/15

2:41 pm-10:18 pm

1 stop9h 37m

Ontario

Tue 3/17

11:59 pm-10:33 am

1 stop8h 34m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

  • 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.
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.

Cheapflights Insights

Everything you need to know about your flight from Columbia to Ontario

What is the cheapest month to book a flight from Columbia, Missouri to Ontario?

Currently, January is the cheapest month in which you can book a flight from Columbia, Missouri to Ontario (average of $258). Flying from Columbia, Missouri to Ontario in May is currently the most expensive (average of $563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 January 29, 2026.
See what other customers who have flown with 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.
American Airlines
7.2
Good
11,205 reviews

Overall

7.2

Crew

8.0

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
American Airlines
7.2
Good
11,205 reviews
American Airlines
7.2
Good
11,205 reviews

Overall

7.2

Crew

8.0

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

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.

  • How long is the flight from Columbia, Missouri to Ontario?

    United Airlines can get you from Columbia, Missouri to Ontario in just under 5h 43m. Your travel time can differ by up to . Airlines will cover a distance of 1442 mi.

  • What is the cheapest airline to fly from Columbia, Missouri to Ontario round-trip?

    Our cheapest airline available from Columbia, Missouri to Ontario is American Airlines. Our recent data shows that you can find tickets from as low as $444 on this airline.

  • Can I find deals for flights from Columbia to Ontario that include hotel bookings?

    Yes. In addition to deals on Columbia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Columbia to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Columbia to Ontario.

  • Can I find deals for business class flights from Columbia to Ontario?

    Yes. Cheapflights offers flight deals from Columbia to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Columbia, Missouri to Ontario?

    Currently, January is the cheapest month in which you can book a flight from Columbia, Missouri to Ontario (average of $258). Flying from Columbia, Missouri to Ontario in May is currently the most expensive (average of $563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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 for Columbia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Las Vegas flights
Kansas City to Las Vegas flights
Kansas City to Los Angeles flights
St. Louis to Los Angeles flights
Kansas City to San Francisco flights
St. Louis to San Francisco flights
St. Louis to San Diego flights
Kansas City to Santa Ana flights
Kansas City to Burbank flights
Kansas City to San Diego flights
Kansas City to Ontario flights
St. Louis to Ontario flights
Kansas City to Sacramento flights
Kansas City to San Jose flights
Kansas City to Oakland flights
Springfield to Los Angeles flights
St. Louis to Sacramento flights
Springfield to Las Vegas flights
Kansas City to Palm Springs flights
St. Louis to Santa Ana flights
St. Louis to San Jose flights
St. Louis to Reno flights
St. Louis to Oakland flights
Springfield to San Diego flights
Springfield to Ontario flights
Columbia to Las Vegas flights
St. Louis to Burbank flights
Kansas City to Reno flights
Kansas City to Monterey flights
St. Louis to Fresno flights
Springfield to San Jose flights
St. Louis to Palm Springs flights
Springfield to San Francisco flights
St. Louis to San Luis Obispo flights
Joplin to Los Angeles flights
Kansas City to Fresno flights
St. Louis to Santa Barbara flights
Columbia to Los Angeles flights
St. Louis to Long Beach flights
Springfield to Santa Ana flights
Kansas City to Long Beach flights
Joplin to Las Vegas flights
Kansas City to Santa Barbara flights
Kansas City to San Luis Obispo flights
St. Louis to Medford flights
Joplin to Santa Ana flights
Kansas City to Medford flights
Columbia to San Francisco flights
Springfield to Palm Springs flights
Springfield to Sacramento flights

Top airline flying from Columbia to Ontario

Discover the top airline 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$444Average$556FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.