$143 Cheap Flights from Charleston (CHS) to Ontario (ONT)

View $143 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Charleston to Ontario (CHS-ONT)

Prices were available within the past 7 days and start at $143 for one-way flights and $287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 6 - Wed, Jan 14
CHS
Charleston
ONT
Ontario
$287 Roundtrip, found 16 hours ago
$287
Roundtrip
found 16 hours ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Charleston to Ontario, returning Wed, Jan 14, priced at $287 found 16 hours ago
American Airlines
Wed, Feb 11 - Sun, Feb 15
CHS
Charleston
ONT
Ontario
$287 Roundtrip, found 6 hours ago
$287
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Feb 11 from Charleston to Ontario, returning Sun, Feb 15, priced at $287 found 6 hours ago
United
Fri, Jan 23 - Mon, Jan 26
CHS
Charleston
ONT
Ontario
$287 Roundtrip, found 9 hours ago
$287
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Jan 23 from Charleston to Ontario, returning Mon, Jan 26, priced at $287 found 9 hours ago
United
Fri, Jan 23 - Mon, Jan 26
CHS
Charleston
ONT
Ontario
$289 Roundtrip, found 9 hours ago
$289
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Jan 23 from Charleston to Ontario, returning Mon, Jan 26, priced at $289 found 9 hours ago
Delta
Thu, Dec 11 - Sun, Dec 14
CHS
Charleston
ONT
Ontario
$292 Roundtrip, found 2 hours ago
$292
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Dec 11 from Charleston to Ontario, returning Sun, Dec 14, priced at $292 found 2 hours ago
Southwest Airlines
Fri, Jan 9 - Wed, Jan 14
CHS
Charleston
ONT
Ontario
$292 Roundtrip, found 2 days ago
$292
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, Jan 9 from Charleston to Ontario, returning Wed, Jan 14, priced at $292 found 2 days ago
Delta
Fri, Jan 23 - Mon, Jan 26
CHS
Charleston
ONT
Ontario
$294 Roundtrip, found 9 hours ago
$294
Roundtrip
found 9 hours ago
Select Delta flight, departing Fri, Jan 23 from Charleston to Ontario, returning Mon, Jan 26, priced at $294 found 9 hours ago
Delta
Fri, Dec 12 - Mon, Dec 15
CHS
Charleston
ONT
Ontario
$296 Roundtrip, found 2 hours ago
$296
Roundtrip
found 2 hours ago
Select Delta flight, departing Fri, Dec 12 from Charleston to Ontario, returning Mon, Dec 15, priced at $296 found 2 hours ago
Delta
Thu, Dec 11 - Sun, Dec 14
CHS
Charleston
ONT
Ontario
$297 Roundtrip, found 2 hours ago
$297
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Dec 11 from Charleston to Ontario, returning Sun, Dec 14, priced at $297 found 2 hours ago
United
Tue, Jan 27 - Mon, Feb 2
CHS
Charleston
ONT
Ontario
$297 Roundtrip, found 5 days ago
$297
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jan 27 from Charleston to Ontario, returning Mon, Feb 2, priced at $297 found 5 days ago

Find the cheapest month to fly from Charleston (CHS) to Ontario (ONT)

August is typically the cheapest month to fly

From $226 - $814 per traveler.

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Average driving time to city center is 42 minutes. Flights from $768
SNA
John Wayne
Average driving time to city center42 min
Flights from $768

Frequently asked questions

How much does a flight from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Get a cheap one-way flight from $143 or cheap return flight from $287 from Charleston Intl. Airport (CHS) 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 Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)?
January is the most affordable month to fly from CHS to ONT. Traveling outside of peak seasons is often the key to finding a great deal.
What is the cheapest airline that flies from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from CHS to ONT. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CHS to ONT?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute fares from CHS to ONT are generally more expensive. To lock in the lowest rates, start looking for flights as early as possible. That being said, if your travel plans are flexible, it's possible to find a cheap ticket right before you leave.
Is it cheaper to book a CHS to ONT flight and hotel package?
Compared with arranging hotels and flights separately, booking a CHS to ONT flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of travel planning. Simply secure your flights and select from our wide range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Charleston Intl. Airport (CHS) to Los Angeles - Ontario Intl. Airport (ONT)?
If you booked your CHS to ONT flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Charleston Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$286
Distance
2153 mi

Book with confidence

Charleston to Ontario Flights

The cheapest times to fly from Charleston 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 Charleston to Ontario are during the month of January. You can find some of the cheapest flights from Charleston to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Charleston to Ontario

Sunday is one of the best days to book for cheap flights from Charleston 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 Charleston 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 Charleston to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $143 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 Charleston 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 Charleston 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.

 

Charleston to Ontario Flights

Explore a world of travel with Expedia

*Available to One Key members.