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$167+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
Aug 12 — Aug 191
Wed 8/12
Wed 8/19
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 13, 2026.

This Delta deal was found by Cheapflights users on 7/9. 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 11/115:55 pm
CHS
-
ONT
1 stop7h 19m
Delta
Mon 11/1610:59 pm
ONT
-
CHS
1 stop7h 43m
Delta
Deal found 7/9$297
This Southwest deal was found by Cheapflights users on 7/10. 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 8/134:05 pm
CHS
-
ONT
1 stop9h 05m
Southwest
Mon 8/175:15 am
ONT
-
CHS
2 stops9h 10m
Southwest
Deal found 7/10$302
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Sat 8/2211:40 am
CHS
-
ONT
2 stops11h 21m
United Airlines
Wed 8/266:08 am
ONT
-
CHS
2 stops12h 27m
United Airlines
Deal found 7/10$307
This Delta deal was found by Cheapflights users on 7/12. 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 9/176:51 pm
CHS
-
ONT
1 stop6h 35m
Delta
Tue 9/2212:17 pm
ONT
-
CHS
1 stop8h 40m
Delta
Deal found 7/12$333
This JetBlue deal was found by Cheapflights users on 7/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:05 am
CHS
-
ONT
1 stop12h 08m
JetBlue
Sat 9/129:10 pm
ONT
-
CHS
1 stop10h 05m
JetBlue
Deal found 7/12$339
This CheapOair deal was found by Cheapflights users on 7/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:09 pm
CHS
-
ONT
1 stop19h 07m
Alaska Airlines
Mon 9/283:14 pm
ONT
-
CHS
1 stop23h 52m
Alaska Airlines
Deal found 7/10$360
This CheapOair deal was found by Cheapflights users on 7/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:01 pm
CHS
-
ONT
1 stop20h 07m
Alaska Airlines
Sat 8/223:07 pm
ONT
-
CHS
1 stop23h 58m
Alaska Airlines
Deal found 7/10$374

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 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$167
(Delta)

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. 45% potential increase in price ($478 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 13, 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

Thu 8/13

4:05 pm-10:10 pm

1 stop9h 05m

Ontario

Mon 8/17

5:15 am-5:25 pm

2 stops9h 10m

$338

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 9/9

11:05 am-8:13 pm

1 stop12h 08m

Ontario

Sat 9/12

9:10 pm-10:15 am

1 stop10h 05m

$339

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 9/4

4:38 pm-10:35 pm

1 stop8h 57m

Ontario

Mon 9/7

7:13 pm-10:41 am

2 stops12h 28m

$343
Quickest round-trip

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sat 8/15

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sat 8/22

12:00 pm-9:51 pm

1 stop6h 51m

$428

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 9/9

4:30 pm-8:53 pm

1 stop7h 23m

Ontario

Sat 9/12

5:00 am-9:34 pm

2 stops13h 34m

$448

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 8/19

11:40 am-8:01 pm

2 stops11h 21m

Ontario

Wed 8/26

5:00 am-3:30 pm

1 stop7h 30m

$448
Cheapest one-way

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 10/20

5:30 am-11:08 am

1 stop8h 38m

$167

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 10/20

1:55 pm-9:20 pm

2 stops10h 25m

$172

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Mon 8/31

4:38 pm-10:35 pm

1 stop8h 57m

$204
Quickest one-way

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sun 10/4

6:51 pm-10:26 pm

1 stop6h 35m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 17 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.

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 13, 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
8,462 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

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
8,462 reviews
Delta
7.8
Good
8,462 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

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
11,811 reviews
Delta
7.8
Good
8,462 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

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 57m. Southwest provides one of the quickest options available for as low as $343. 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.

  • What are the cheapest airlines to fly from Charleston to Ontario one-way?

    $118 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $150 and $156, respectively.

  • 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.

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Alternative routes for Charleston to Ontario

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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 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$168Average$394FlexibilityNo cancel feeOn-time71%
DeltaCheapest$326Average$646FlexibilityNo cancel feeOn-timeN/A

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