HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$169+ Cheap flights from Charleston to Ontario (CHS - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — 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 Charleston 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 Charleston to Ontario

Cheapest flights from Charleston to Ontario
Explore the most affordable flight options available from Charleston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:20 am
CHS
-
ONT
2 stops11h 19m
Delta
Tue 5/125:55 pm
ONT
-
CHS
2 stops12h 47m
Delta
Deal found 1/27$334
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:20 pm
CHS
-
ONT
1 stop9h 15m
American Airlines
Tue 5/1210:59 am
ONT
-
CHS
1 stop8h 42m
American Airlines
Deal found 1/28$340
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:15 am
CHS
-
ONT
1 stop9h 00m
Southwest
Mon 4/279:55 pm
ONT
-
CHS
1 stop10h 05m
Southwest
Deal found 1/26$354
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
CHS
-
ONT
1 stop9h 18m
American Airlines
Sat 5/210:59 am
ONT
-
CHS
1 stop8h 42m
American Airlines
Deal found 1/27$371
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:20 am
CHS
-
ONT
2 stops11h 19m
Delta
Sat 5/210:15 pm
ONT
-
CHS
1 stop8h 54m
Delta
Deal found 1/27$372
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:00 pm
CHS
-
ONT
1 stop8h 05m
Southwest
Mon 3/26:30 am
ONT
-
CHS
1 stop8h 15m
Southwest
Deal found 1/27$378
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.
Wed 4/228:00 am
CHS
-
ONT
2 stops12h 47m
United Airlines
Mon 4/276:49 pm
ONT
-
CHS
2 stops12h 34m
United Airlines
Deal found 1/26$382

Find flight deals from Charleston to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Charleston (CHS) 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

$334
(Delta)

One-way from

$169
(Delta)

Popular in

December

Cheapest in

February

Average price

$344
Provider with most accurate pricing for Charleston-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Charleston-Ontario flights.
Search Deals
From Charleston to Ontario
Search Deals
One-way flight from Charleston to Ontario
Search Deals
Highest demand for flights based on searches. 34% potential increase in price ($243 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 21% potential price decrease ($81 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 Charleston 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 Charleston to Ontario that are best for you.

Fly from

Charleston

Fly to

Ontario

Route

Depart

Return

Price

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 4/22

7:15 am-1:15 pm

1 stop9h 00m

Ontario

Mon 4/27

11:55 pm-1:35 pm

2 stops10h 40m

$359

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 2/27

1:00 pm-6:05 pm

1 stop8h 05m

Ontario

Mon 3/2

6:30 am-5:45 pm

1 stop8h 15m

$378

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 4/22

8:00 am-5:47 pm

2 stops12h 47m

Ontario

Mon 4/27

6:49 pm-10:23 am

2 stops12h 34m

$382

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 2/27

6:32 pm-3:08 pm

1 stop23h 36m

Ontario

Mon 3/2

4:02 pm-5:32 pm

1 stop22h 30m

$393

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 4/28

6:25 am-11:36 am

1 stop8h 11m

Ontario

Sun 5/3

10:15 pm-10:09 am

1 stop8h 54m

$404

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 3/20

5:06 pm-10:36 pm

1 stop8h 30m

Ontario

Mon 3/23

11:59 pm-12:05 pm

1 stop9h 06m

$404

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 3/20

2:25 pm-10:45 pm

2 stops11h 20m

Ontario

Mon 3/23

9:55 pm-10:00 am

1 stop9h 05m

$409

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 2/27

3:40 pm-11:35 pm

2 stops10h 55m

Ontario

Fri 3/6

5:40 am-5:10 pm

2 stops8h 30m

$429

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 3/27

5:27 am-11:47 am

1 stop9h 20m

Ontario

Sat 4/4

10:25 pm-9:57 am

1 stop8h 32m

$434

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 3/17

4:55 pm-10:18 pm

1 stop8h 23m

Ontario

Wed 3/18

6:00 am-4:08 pm

1 stop7h 08m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Charleston to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Charleston to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Charleston-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Charleston-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Charleston-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Charleston-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 Charleston-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 Charleston to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Charleston 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 Charleston to Ontario

What is the cheapest month to book a flight from Charleston to Ontario?

Currently, May is the cheapest month in which you can book a flight from Charleston to Ontario (average of $91). Flying from Charleston to Ontario in January is currently the most expensive (average of $300). 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.
Read reviews from past customers who have flown Delta and American Airlines from Charleston to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,128 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
11,205 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Charleston 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 Charleston to Ontario?

    A quick flight from Charleston to Ontario can take about 9h. Delta provides one of the quickest options available for as low as $359. The distance from Charleston to Ontario is about 2152 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Charleston to Ontario round-trip?

    Flying on American Airlines is currently your cheapest option to Ontario, with prices starting at $168. Another option worth looking into is Delta, starting at $296 round trip. American Airlines is currently priced 63% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Charleston 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 Charleston to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Charleston to Ontario (average of $91). Flying from Charleston to Ontario in January is currently the most expensive (average of $300). 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 Charleston to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Las Vegas flights
Charlotte to Los Angeles flights
Charlotte to San Francisco flights
Charlotte to San Diego flights
Charlotte to Ontario flights
Charleston to Las Vegas flights
Myrtle Beach to Las Vegas flights
Greenville to Las Vegas flights
Columbia to Las Vegas flights
Charlotte to Burbank flights
Charlotte to San Jose flights
Charleston to Los Angeles flights
Charlotte to Santa Ana flights
Augusta to Las Vegas flights
Savannah to Las Vegas flights
Charleston to San Francisco flights
Charleston to San Diego flights
Charlotte to Palm Springs flights
Greenville to San Diego flights
Charlotte to Sacramento flights
Greenville to Los Angeles flights
Columbia to Los Angeles flights
Charlotte to Reno flights
Myrtle Beach to San Diego flights
Greenville to San Francisco flights
Savannah to Los Angeles flights
Columbia to San Diego flights
Columbia to San Francisco flights
Charlotte to Oakland flights
Savannah to San Francisco flights
Greenville to San Jose flights
Charleston to Santa Ana flights
Savannah to San Diego flights
Savannah to Ontario flights
Myrtle Beach to Los Angeles flights
Charlotte to Fresno flights
Charleston to San Jose flights
Greenville to Ontario flights
Myrtle Beach to Santa Ana flights
Greenville to Santa Ana flights
Myrtle Beach to Reno flights
Charleston to Reno flights
Charleston to Oakland flights
Charlotte to Long Beach flights
Greenville to Reno flights
Augusta to Los Angeles flights
Columbia to Reno flights
Charleston to Palm Springs flights
Charlotte to Monterey flights

Top 2 airlines flying from Charleston to Ontario

Discover the top 2 airlines that operate flights from Charleston 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$168Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$377FlexibilityNo cancel feeOn-timeN/A

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.