COU - ONT

$256 Find Cheap Flights from Columbia to Ontario - Compare and Save

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 8/3. 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
$318
United Airlines
Wed 9/9Tue 9/15
COU - ONT • 1 stop
Cheapest one-way
$256
Multiple Airlines
Mon 8/3
COU - ONT • 2 stops
Top airlines
Cheapest • from $318 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Columbia and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $327 (round-trip)
Shortest trip • 5h 49m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
9:00 am - 12:50 pm
COU
-
ONT
5h 50m
1 stop
United Airlines Logo
1:18 pm - 8:59 pm
ONT
-
COU
5h 41m
1 stop
$318United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
11:20 am - 8:53 pm
COU
-
ONT
11h 33m
2 stops
United Airlines Logo
1:18 pm - 8:59 pm
ONT
-
COU
5h 41m
1 stop
$324United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
11:20 am - 8:53 pm
COU
-
ONT
11h 33m
2 stops
United Airlines Logo
6:08 am - 8:59 pm
ONT
-
COU
12h 51m
2 stops
$410United Airlines
Fri, Sep 4 - Fri, Sep 11
United Airlines Logo
3:12 pm - 10:35 pm
COU
-
ONT
9h 23m
1 stop
United Airlines Logo
7:13 pm - 10:38 am
ONT
-
COU
13h 25m
2 stops
$414United Airlines
Fri, Oct 9 - Tue, Oct 13
American Airlines Logo
5:17 pm - 11:06 pm
COU
-
ONT
7h 49m
1 stop
American Airlines Logo
8:00 pm - 11:07 am
ONT
-
COU
13h 07m
2 stops
$474American Airlines
Mon, Jul 13 - Wed, Jul 22
American Airlines Logo
7:26 pm - 11:59 pm
COU
-
ONT
6h 33m
1 stop
American Airlines Logo
12:35 pm - 10:20 pm
ONT
-
COU
7h 45m
1 stop
$504American Airlines
Sat, Oct 3 - Tue, Oct 6
United Airlines Logo
11:19 am - 10:59 pm
COU
-
ONT
13h 40m
2 stops
United Airlines Logo
4:07 pm - 8:33 pm
ONT
-
COU
26h 26m
2 stops
$507United Airlines
Sat, Oct 3 - Tue, Oct 6
United Airlines Logo
11:19 am - 10:59 pm
COU
-
ONT
13h 40m
2 stops
United Airlines Logo
1:52 pm - 10:37 am
ONT
-
COU
18h 45m
2 stops
$512United Airlines
Sat, Oct 3 - Tue, Oct 6
United Airlines Logo
11:19 am - 10:59 pm
COU
-
ONT
13h 40m
2 stops
United Airlines Logo
5:00 am - 8:33 pm
ONT
-
COU
13h 33m
1 stop
$522United Airlines
Sat, Oct 3 - Tue, Oct 6
United Airlines Logo
11:19 am - 10:59 pm
COU
-
ONT
13h 40m
2 stops
United Airlines Logo
7:00 am - 10:37 am
ONT
-
COU
25h 37m
1 stop
$528United 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.

Which airlines provide the cheapest flights from Columbia to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Columbia to Ontario were found on United Airlines ($318) and American Airlines ($474).

Good to know

Cheapest flight$256
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 5 days, the lowest price for a flight from Columbia to Ontario was $256 for a one-way ticket and $318 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?

    Star Alliance, and oneworld are the airline alliances operating flights between Columbia and Ontario, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Columbia to Ontario, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Columbia to Ontario are United Airlines and American Airlines. With an average price for the route of $383 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $556 and an overall rating of 7.1.

  • 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 airlines 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.
7.4
United AirlinesOverall score based on 9909 reviews
6.6Food
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

2.0 Mediocremary kay, Jul 2026
ORD - LAX
Read more United Airlines reviews

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

The flight attendant was very polite and attentive. The food was good.

Flight cancelled. Twice. And no communication. No gate agent. Went past boarding time and had to go and see email from AA. Airport communication was bad

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

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

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Everything minus the seat, was okay. Not enough room. 15 hours in a small space was hard on my back. I'm still quite sore.

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

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

Information on your arrival and departure airports