COU - ONT

$339 Find Cheap Flights from Columbia to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Columbia to Ontario departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Columbia to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Columbia to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$358
United Airlines
Sat 4/25Tue 4/28
COU - ONT • 1 stop
Cheapest one-way
$339
United Airlines
Sun 3/8
COU - ONT • 1 stop
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Columbia to Ontario (COU-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Columbia to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Columbia to Ontario

Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
3:23 pm - 10:26 pm
COU
-
ONT
9h 03m
1 stop
United Airlines Logo
1:34 pm - 9:03 pm
ONT
-
COU
5h 29m
1 stop
$358United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
11:30 am - 10:45 pm
COU
-
ONT
13h 15m
2 stops
United Airlines Logo
1:34 pm - 9:03 pm
ONT
-
COU
5h 29m
1 stop
$364United Airlines
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
3:23 pm - 10:26 pm
COU
-
ONT
9h 03m
1 stop
United Airlines Logo
1:34 pm - 9:03 pm
ONT
-
COU
5h 29m
1 stop
$383United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
11:30 am - 10:45 pm
COU
-
ONT
13h 15m
2 stops
United Airlines Logo
6:00 am - 9:03 pm
ONT
-
COU
13h 03m
2 stops
$394United Airlines
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
11:30 am - 8:36 pm
COU
-
ONT
11h 06m
2 stops
United Airlines Logo
1:34 pm - 9:03 pm
ONT
-
COU
5h 29m
1 stop
$414United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
3:23 pm - 10:26 pm
COU
-
ONT
9h 03m
1 stop
United Airlines Logo
5:10 am - 9:03 pm
ONT
-
COU
13h 53m
1 stop
$434United Airlines
Sat, Apr 25 - Mon, Apr 27
United Airlines Logo
3:23 pm - 10:26 pm
COU
-
ONT
9h 03m
1 stop
United Airlines Logo
6:49 pm - 9:03 pm
ONT
-
COU
24h 14m
2 stops
$440United Airlines
Sat, Apr 25 - Mon, Apr 27
United Airlines Logo
11:30 am - 8:36 pm
COU
-
ONT
11h 06m
2 stops
United Airlines Logo
6:49 pm - 9:03 pm
ONT
-
COU
24h 14m
2 stops
$445United Airlines
Mon, Mar 16 - Sat, Mar 21
United Airlines Logo
2:41 pm - 10:18 pm
COU
-
ONT
9h 37m
1 stop
United Airlines Logo
5:15 am - 8:20 pm
ONT
-
COU
13h 05m
1 stop
$469United Airlines
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
11:30 am - 8:36 pm
COU
-
ONT
11h 06m
2 stops
United Airlines Logo
6:00 am - 9:03 pm
ONT
-
COU
13h 03m
2 stops
$480United Airlines
Booking Insights

KAYAK's insights & trends for Columbia to Ontario flights

Get data-powered insights and trends into flights from Columbia to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Columbia to Ontario?

Percentage of 1-stop round-trip flights from Columbia to Ontario chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Dallas (DFW) is the top choice – 75% of KAYAK users who clicked on 1-stop flights from Columbia to Ontario picked an itinerary connecting there.

What is the cheapest layover airport when flying from Columbia to Ontario?

Average round-trip price for 1-stop flights from Columbia to Ontario clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $365.

Which layover airport offers the shortest total travel time from Columbia to Ontario?

Shortest average total travel time for 1-stop one-way flights from Columbia to Ontario via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Denver (DEN) for the shortest journey. The average one-way travel time for flights connecting there is 5h 49m.

Which layover airport has the quickest connection when flying from Columbia to Ontario?

Average layover duration at different layover airports for 1-stop one-way flights from Columbia to Ontario, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Denver (DEN) often has the shortest layovers from Columbia to Ontario, with an average of 0h 52m.

Find deals

Good to know

Cheapest flight$339
Flight from Columbia to Ontario

When to book flights from Columbia to Ontario

Are your dates flexible? Find out the best times to travel from Columbia to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Columbia to Ontario

  • What is the cheapest flight from Columbia to Ontario?

    In the last 3 days, the lowest price for a flight from Columbia to Ontario was $339 for a one-way ticket and $358 for a round-trip.

  • Do I need a passport to fly between Columbia and Ontario?

    A passport is not required to fly from Columbia to Ontario.

  • Which airports will I be using when flying from Columbia to Ontario?

    Columbia and Ontario are both served by 1 main airport. You will leave Columbia from Columbia Regional and will be arriving at Ontario.

  • Which aircraft models fly most regularly from Columbia to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Columbia to Ontario?

    oneworld is the only airline alliance operating flights between Columbia and Ontario.

  • How does KAYAK find such low prices on flights from Columbia to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Columbia to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Columbia to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Columbia to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Columbia with another airline. Booking your flights between Columbia and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Columbia to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Columbia to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Columbia to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Columbia to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11288 reviews
7.2Comfort
6.4Food
7.5Boarding
6.9Entertainment
8.0Crew
Airline reviews

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

2.0 MediocreAlan, Feb 2026
BOS - LAX
Read more American Airlines reviews

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

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

Information on your arrival and departure airports

Columbia (COU)
Ontario (ONT)