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Ontario

$198+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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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 July 30, 2026.

This Delta deal was found by Cheapflights users on 7/30. 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.
Wed 8/266:15 am
CHS
-
ONT
1 stop7h 27m
Delta
Sat 8/2912:00 pm
ONT
-
CHS
1 stop6h 51m
Delta
Deal found 7/30$333
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:54 pm
CHS
-
ONT
2 stops11h 05m
United Airlines
Tue 8/255:00 am
ONT
-
CHS
1 stop7h 28m
United Airlines
Deal found 7/27$334
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/2610:19 am
CHS
-
ONT
2 stops12h 42m
United Airlines
Sat 8/295:00 am
ONT
-
CHS
1 stop7h 28m
United Airlines
Deal found 7/30$338
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/96:44 am
CHS
-
ONT
1 stop9h 41m
American Airlines
Wed 9/166:00 am
ONT
-
CHS
1 stop6h 40m
American Airlines
Deal found 7/27$339
This Southwest deal was found by Cheapflights users on 7/27. 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.
Wed 9/91:15 pm
CHS
-
ONT
1 stop11h 50m
Southwest
Wed 9/167:45 am
ONT
-
CHS
2 stops9h 05m
Southwest
Deal found 7/27$344
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 12/244:30 pm
CHS
-
ONT
1 stop8h 44m
Delta
Thu 12/3110:59 pm
ONT
-
CHS
1 stop7h 43m
Delta
Deal found 7/29$356
This Southwest deal was found by Cheapflights users on 7/29. 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.
Thu 12/246:35 am
CHS
-
ONT
2 stops10h 50m
Southwest
Wed 12/308:05 am
ONT
-
CHS
1 stop8h 15m
Southwest
Deal found 7/29$361
This Southwest deal was found by Cheapflights users on 7/27. 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.
Mon 8/2411:30 am
CHS
-
ONT
2 stops10h 50m
Southwest
Tue 8/2511:55 pm
ONT
-
CHS
2 stops9h 40m
Southwest
Deal found 7/27$366
This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 8/245:10 am
CHS
-
ONT
1 stop8h 32m
Delta
Sat 8/2912:00 pm
ONT
-
CHS
1 stop6h 51m
Delta
Deal found 7/29$376
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 12/245:55 pm
CHS
-
ONT
1 stop7h 19m
Delta
Tue 12/2910:59 pm
ONT
-
CHS
1 stop7h 43m
Delta
Deal found 7/29$379
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 8/285:06 pm
CHS
-
ONT
1 stop7h 46m
Delta
Mon 8/3112:00 pm
ONT
-
CHS
1 stop8h 59m
Delta
Deal found 7/29$381

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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$333
(Delta)

One-way from

$198
(KAYAK)

Popular in

December

Cheapest in

February

Average price

$566
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. 44% potential increase in price ($475 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease ($95 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 30, 2026.
Use the filters below to find and compare flights from Charleston to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 10/21

2:20 pm-8:45 pm

1 stop9h 25m

Ontario

Wed 10/28

8:35 am-7:30 pm

1 stop7h 55m

$333

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 11/11

5:20 am-11:10 am

1 stop8h 50m

Ontario

Mon 11/16

12:22 pm-11:59 pm

1 stop8h 37m

$333

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Mon 8/24

2:54 pm-10:59 pm

2 stops11h 05m

Ontario

Tue 8/25

5:00 am-3:28 pm

1 stop7h 28m

$334

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 12/24

6:35 am-2:25 pm

2 stops10h 50m

Ontario

Wed 12/30

8:05 am-7:20 pm

1 stop8h 15m

$361

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 12/24

4:30 pm-10:14 pm

1 stop8h 44m

Ontario

Wed 12/30

10:59 pm-9:42 am

1 stop7h 43m

$379

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 10/7

2:20 pm-8:45 pm

1 stop9h 25m

Ontario

Sun 10/11

6:00 am-10:00 pm

1 stop13h 00m

$415
Quickest round-trip

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 10/29

4:15 pm-8:51 pm

1 stop7h 36m

Ontario

Sat 11/14

7:00 am-5:49 pm

1 stop7h 49m

$443

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 8/20

2:54 pm-10:59 pm

2 stops11h 05m

Ontario

Tue 8/25

5:00 am-3:28 pm

1 stop7h 28m

$448

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 10/20

4:58 pm-10:49 pm

1 stop8h 51m

Ontario

Sat 10/24

6:00 am-12:15 am

2 stops15h 15m

$466

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Mon 8/17

5:06 pm-9:52 pm

1 stop7h 46m

Ontario

Thu 8/20

12:00 pm-11:59 pm

1 stop8h 59m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust 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, February is the cheapest month in which you can book a flight from Charleston to Ontario (average of $326). Flying from Charleston to Ontario in December is currently the most expensive (average of $1,617). 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.

How much does it cost to fly round-trip from Charleston to Ontario?

Airfare is typical for this route at the moment.

Charleston to Ontario flights typically cost between $296 and $814 in August.
The cheapest round-trip price found within the last 5 days was $333 on Delta (Aug 26-Aug 29).

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 July 30, 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
7.8
Good
8,487 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

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
7.8
Good
8,487 reviews
Delta
7.8
Good
8,487 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

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
7.1
Good
11,841 reviews
Delta
7.8
Good
8,487 reviews

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

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 8h 50m. Southwest provides one of the quickest options available for as low as $333. 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 $326 round trip. American Airlines is currently priced 71% 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, February is the cheapest month in which you can book a flight from Charleston to Ontario (average of $326). Flying from Charleston to Ontario in December is currently the most expensive (average of $1,617). 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

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Alternative routes for Charleston to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$168Average$417FlexibilityNo cancel feeOn-time71%
DeltaCheapest$326Average$536FlexibilityNo cancel feeOn-timeN/A

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