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$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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This Delta deal was found by Cheapflights users on 2/9. 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.
Tue 5/55:20 am
CHS
-
ONT
2 stops11h 19m
Delta
Tue 5/125:50 pm
ONT
-
CHS
2 stops11h 53m
Delta
Deal found 2/9$334
This Delta deal was found by Cheapflights users on 2/8. 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
1 stop9h 16m
Delta
Sat 5/210:15 pm
ONT
-
CHS
1 stop8h 54m
Delta
Deal found 2/8$351
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:32 pm
CHS
-
ONT
1 stop32h 00m
Alaska Airlines
Tue 3/1012:02 pm
ONT
-
CHS
1 stop26h 30m
Alaska Airlines
Deal found 2/9$353
This American Airlines deal was found by Cheapflights users on 2/8. 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 4/257:30 pm
CHS
-
ONT
1 stop7h 16m
American Airlines
Sat 5/210:59 am
ONT
-
CHS
2 stops10h 00m
American Airlines
Deal found 2/8$356
This Southwest deal was found by Cheapflights users on 2/7. 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 3/207:40 am
CHS
-
ONT
1 stop9h 25m
Southwest
Tue 3/241:20 pm
ONT
-
CHS
1 stop6h 05m
Southwest
Deal found 2/7$387

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$334
(Delta)

One-way from

$169
(United Airlines)

Popular in

December

Cheapest in

June

Average price

$326
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 ($410 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease ($76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 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

Tue 5/5

5:20 am-1:39 pm

2 stops11h 19m

Ontario

Tue 5/12

5:50 pm-9:40 am

2 stops12h 50m

$334

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sat 4/25

5:20 am-11:36 am

1 stop9h 16m

Ontario

Sat 5/2

10:15 pm-10:09 am

1 stop8h 54m

$351

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 3/4

6:32 pm-11:32 pm

1 stop32h 00m

Ontario

Tue 3/10

12:02 pm-5:32 pm

1 stop26h 30m

$353

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 3/12

4:55 pm-10:18 pm

1 stop8h 23m

$169

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Thu 4/23

4:46 pm-9:07 pm

1 stop7h 21m

$186

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sun 3/8

6:32 pm-11:08 am

1 stop19h 36m

$201

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 4/21

5:12 pm-9:50 pm

1 stop7h 38m

$219

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Wed 4/22

5:12 pm-9:50 pm

1 stop7h 38m

$219

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Sun 3/8

5:15 pm-12:15 am

1 stop10h 00m

$220

CharlestonOntario

CHS - ONT

CHSONT

Charleston

Tue 3/3

10:20 am-8:50 pm

2 stops13h 30m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 11 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 February.
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 $102). Flying from Charleston to Ontario in December is currently the most expensive (average of $272). 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 February 11, 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
8,180 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

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
8,180 reviews
Delta
7.9
Good
8,180 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

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
11,266 reviews
Delta
7.9
Good
8,180 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

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 11h 19m. Delta provides one of the quickest options available for as low as $334. The distance from Charleston to Ontario is about 2152 mi.

  • 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 67% 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 $102). Flying from Charleston to Ontario in December is currently the most expensive (average of $272). 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$168Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$378FlexibilityNo cancel feeOn-timeN/A

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