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$171+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
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 December 14, 2025.

This Delta deal was found by Cheapflights users on 12/14. 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 12/255:30 amCHS - ONT
1 stop7h 30mDelta
Wed 12/3111:15 amONT - CHS
1 stop6h 24mDelta
Deal found 12/14$410
This Delta deal was found by Cheapflights users on 12/14. 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 12/255:30 amCHS - ONT
1 stop7h 30mDelta
Tue 12/3010:29 pmONT - CHS
1 stop8h 04mDelta
Deal found 12/14$429
This American Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/257:00 amCHS - ONT
1 stop7h 53mAmerican Airlines
Mon 12/296:10 amONT - CHS
1 stop9h 13mAmerican Airlines
Deal found 12/14$444
This Delta deal was found by Cheapflights users on 12/14. 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 12/255:30 amCHS - ONT
1 stop7h 30mDelta
Thu 1/111:15 amONT - CHS
1 stop6h 24mDelta
Deal found 12/14$510
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/254:05 pmCHS - ONT
1 stop8h 02mUnited Airlines
Thu 1/15:05 amONT - CHS
1 stop7h 04mUnited Airlines
Deal found 12/14$512
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/244:05 pmCHS - ONT
1 stop8h 02mUnited Airlines
Tue 12/305:05 amONT - CHS
1 stop7h 04mUnited Airlines
Deal found 12/13$560
This Delta deal was found by Cheapflights users on 12/14. 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 12/255:30 amCHS - ONT
1 stop7h 30mDelta
Sat 12/2710:29 pmONT - CHS
1 stop7h 13mDelta
Deal found 12/14$590
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/314:05 pmCHS - ONT
1 stop8h 02mUnited Airlines
Sun 1/411:59 pmONT - CHS
1 stop7h 36mUnited Airlines
Deal found 12/13$610

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 December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$344
(Alaska Airlines)

One-way from

$171
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,617
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. 36% potential increase in price ($290 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 26% potential price decrease ($102 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 14, 2025.
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 1/14

7:22 pm-11:56 pm

1 stop31h 34m

Ontario

Sat 1/17

11:53 am-6:22 pm

1 stop27h 29m

$364

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Fri 1/23

7:22 pm-3:08 pm

1 stop22h 46m

Ontario

Mon 1/26

6:00 am-6:22 pm

1 stop9h 22m

$364

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 2/5

7:00 am-9:05 pm

2 stops17h 05m

Ontario

Tue 2/24

5:00 pm-9:23 am

2 stops13h 23m

$372

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 1/14

5:25 am-11:31 am

1 stop9h 06m

Ontario

Fri 1/16

12:41 pm-10:07 pm

1 stop6h 26m

$401

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Mon 1/26

7:22 pm-3:08 pm

1 stop22h 46m

Ontario

Thu 1/29

6:00 am-6:22 pm

1 stop9h 22m

$404

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sun 3/8

6:32 pm-11:32 pm

1 stop32h 00m

Ontario

Fri 3/13

12:02 pm-5:32 pm

1 stop26h 30m

$418

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sat 3/7

7:00 am-9:05 pm

2 stops17h 05m

Ontario

Fri 3/13

10:30 pm-5:06 pm

2 stops15h 36m

$440

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 1/8

7:22 pm-11:56 pm

1 stop31h 34m

Ontario

Sun 1/11

6:00 am-6:22 pm

1 stop9h 22m

$462

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 2/19

6:32 pm-11:32 pm

1 stop32h 00m

Ontario

Mon 2/23

12:02 pm-5:32 pm

1 stop26h 30m

$484

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sun 2/15

5:00 pm-9:34 pm

3 stops55h 34m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 18 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Charleston-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December is currently the most expensive (average of $315). 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.

What is the cheapest time of day to fly from CHS to ONT?

Find hourly flight availability from Charleston to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 14, 2025.

It’s typically best to fly out from Charleston to Ontario in the morning. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.

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 December 14, 2025.
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
8,007 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Food

7.3

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Food

7.3

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
11,054 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Food

7.3

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 17h 05m. Alaska Airlines provides one of the quickest options available for as low as $372. 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 $267. Another option worth looking into is Delta, starting at $296 round trip. American Airlines is currently priced 45% 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 $148 and $171, 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, 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 December is currently the most expensive (average of $315). 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

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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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$168Average$339FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$330FlexibilityNo cancel feeOn-timeN/A

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