$105 Cheap Flights from Columbus (CMH) to Ontario (ONT)

View $105 flight on Tue, Dec 16, 2025Opens in a new window

Popular airlines from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Columbus to Ontario (CMH-ONT)

Prices were available within the past 7 days and start at $105 for one-way flights and $173 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 23 - Sun, Oct 26
CMH
Columbus
ONT
Ontario
$173 Roundtrip, found 10 hours ago
$173
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Columbus to Ontario, returning Sun, Oct 26, priced at $173 found 10 hours ago
Southwest Airlines
Wed, Feb 18 - Tue, Feb 24
CMH
Columbus
ONT
Ontario
$209 Roundtrip, found 5 days ago
$209
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Wed, Feb 18 from Columbus to Ontario, returning Tue, Feb 24, priced at $209 found 5 days ago
Southwest Airlines
Sat, Oct 4 - Wed, Oct 8
CMH
Columbus
ONT
Ontario
$227 Roundtrip, found 4 days ago
$227
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sat, Oct 4 from Columbus to Ontario, returning Wed, Oct 8, priced at $227 found 4 days ago
Frontier Airlines
Fri, Nov 7 - Mon, Nov 10
CMH
Columbus
ONT
Ontario
$290 Roundtrip, found 2 days ago
$290
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 7 from Columbus to Ontario, returning Mon, Nov 10, priced at $290 found 2 days ago
American Airlines
Sat, Nov 8 - Tue, Nov 18
CMH
Columbus
ONT
Ontario
$290 Roundtrip, found 1 day ago
$290
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Nov 8 from Columbus to Ontario, returning Tue, Nov 18, priced at $290 found 1 day ago
American Airlines
Sat, Nov 8 - Tue, Nov 18
CMH
Columbus
ONT
Ontario
$296 Roundtrip, found 1 day ago
$296
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Nov 8 from Columbus to Ontario, returning Tue, Nov 18, priced at $296 found 1 day ago
Frontier Airlines
Thu, Oct 23 - Mon, Oct 27
CMH
Columbus
ONT
Ontario
$307 Roundtrip, found 18 hours ago
$307
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Columbus to Ontario, returning Mon, Oct 27, priced at $307 found 18 hours ago
Southwest Airlines
Sat, Oct 18 - Wed, Oct 22
CMH
Columbus
ONT
Ontario
$310 Roundtrip, found 3 days ago
$310
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Oct 18 from Columbus to Ontario, returning Wed, Oct 22, priced at $310 found 3 days ago
United
Sat, Nov 8 - Tue, Nov 18
CMH
Columbus
ONT
Ontario
$311 Roundtrip, found 1 day ago
$311
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 8 from Columbus to Ontario, returning Tue, Nov 18, priced at $311 found 1 day ago
Alaska Airlines
Tue, Oct 14 - Tue, Oct 21
CMH
Columbus
ONT
Ontario
$316 Roundtrip, found 21 hours ago
$316
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Tue, Oct 14 from Columbus to Ontario, returning Tue, Oct 21, priced at $316 found 21 hours ago

Find the cheapest month to fly from Columbus (CMH) to Ontario (ONT)

August is typically the cheapest month to fly

From $198 - $718 per traveler.

Frequently asked questions

How much does a flight from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $105 or cheap return flight from $173 from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)?
October is the least expensive month to fly from CMH to ONT. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from CMH to ONT. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)?
Nonstop flights from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CMH to ONT?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)?
To touch down at Los Angeles - Ontario Intl. Airport (ONT) on time, select a flight that leaves from John Glenn Columbus Intl. Airport (CMH) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your ticket from CMH to ONT just before your trip is generally more expensive. However, if you're flexible with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a CMH to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking a CMH to ONT flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and choose from our wide range of stays, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from John Glenn Columbus Intl. Airport (CMH) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, it's possible to reschedule or cancel your CMH to ONT flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
John Glenn Columbus Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$172
Distance
1944 mi

Book with confidence

Book with confidence

Columbus to Ontario Flights

The cheapest times to fly from Columbus to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Columbus to Ontario are during the month of October. You can find some of the cheapest flights from Columbus to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Columbus to Ontario

Sunday is one of the best days to book for cheap flights from Columbus to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Columbus to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Columbus to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $105 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Columbus to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Columbus to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Columbus to Ontario Flights

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