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$149+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Cheap 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 octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$109
(Kiwi.com)

Popular in

April

Cheapest in

June

Average price

$435
Provider with most accurate pricing for Charleston-Ontario flight deals.
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Provider most trusted by Cheapflights users for Charleston-Ontario flights.
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From Charleston to Ontario
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One-way flight from Charleston to Ontario
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Highest demand for flights based on searches. 15% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 octubre 16, 2025.

This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/46:31 pmCHS - ONT
1 stop7h 33mDelta
mié. 12/1010:25 pmONT - CHS
1 stop8h 02mDelta
Deal found 10/13$297
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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.
lun. 11/246:19 pmCHS - ONT
1 stop9h 42mAlaska Airlines
mar. 12/166:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/15$307
This Delta deal was found by Cheapflights users on 10/16. 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.
jue. 11/2712:51 pmCHS - ONT
1 stop9h 51mDelta
mié. 12/1710:25 pmONT - CHS
1 stop8h 02mDelta
Deal found 10/16$317
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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.
lun. 11/246:19 pmCHS - ONT
1 stop9h 42mAlaska Airlines
lun. 12/156:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/16$336
This American Airlines deal was found by Cheapflights users on 10/15. 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.
sáb. 12/64:15 pmCHS - ONT
1 stop7h 52mAmerican Airlines
sáb. 12/1310:34 pmONT - CHS
1 stop7h 04mAmerican Airlines
Deal found 10/15$337
This American Airlines deal was found by Cheapflights users on 10/16. 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.
mié. 11/127:00 amCHS - ONT
1 stop7h 54mAmerican Airlines
mié. 11/1912:46 pmONT - CHS
1 stop6h 38mAmerican Airlines
Deal found 10/16$338
This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/57:24 pmCHS - ONT
1 stop26h 09mAlaska Airlines
lun. 12/812:13 pmONT - CHS
1 stop27h 11mAlaska Airlines
Deal found 10/14$344
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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.
lun. 11/246:19 pmCHS - ONT
1 stop9h 42mAlaska Airlines
dom. 12/146:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/15$357
This Delta deal was found by Cheapflights users on 10/16. 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.
jue. 11/2712:51 pmCHS - ONT
1 stop9h 51mDelta
dom. 12/1410:25 pmONT - CHS
1 stop8h 02mDelta
Deal found 10/16$367
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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.
mar. 11/256:19 pmCHS - ONT
1 stop9h 42mAlaska Airlines
mar. 12/166:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/15$373
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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.
mar. 11/256:19 pmCHS - ONT
1 stop9h 42mAlaska Airlines
sáb. 12/136:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/16$377
This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/127:24 pmCHS - ONT
1 stop18h 55mAlaska Airlines
dom. 12/146:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 10/14$384

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 octubre 16, 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

jue. 12/4

6:31 pm-11:04 pm

1 stop7h 33m

Ontario

mié. 12/10

10:25 pm-9:27 am

1 stop8h 02m

$297

CharlestonOntario

CHS - ONT

CHSONT

Charleston

jue. 11/27

12:51 pm-7:42 pm

1 stop9h 51m

Ontario

mar. 12/16

12:12 pm-9:48 pm

1 stop6h 36m

$317

CharlestonOntario

CHS - ONT

CHSONT

Charleston

lun. 11/24

6:19 pm-1:01 am

1 stop9h 42m

Ontario

lun. 12/15

6:00 am-6:24 pm

1 stop9h 24m

$336

CharlestonOntario

CHS - ONT

CHSONT

Charleston

vie. 12/5

7:24 pm-6:33 pm

1 stop26h 09m

Ontario

lun. 12/8

12:13 pm-6:24 pm

1 stop27h 11m

$344

CharlestonOntario

CHS - ONT

CHSONT

Charleston

jue. 11/27

12:51 pm-7:42 pm

1 stop9h 51m

Ontario

dom. 12/14

10:25 pm-9:27 am

1 stop8h 02m

$367

CharlestonOntario

CHS - ONT

CHSONT

Charleston

mar. 11/25

6:19 pm-1:01 am

1 stop9h 42m

Ontario

sáb. 12/13

6:00 am-6:24 pm

1 stop9h 24m

$377

CharlestonOntario

CHS - ONT

CHSONT

Charleston

vie. 12/12

7:24 pm-11:19 am

1 stop18h 55m

Ontario

dom. 12/14

6:00 am-6:24 pm

1 stop9h 24m

$384

CharlestonOntario

CHS - ONT

CHSONT

Charleston

jue. 11/6

5:05 pm-9:49 pm

1 stop7h 44m

Ontario

lun. 11/10

6:05 am-4:16 pm

1 stop7h 11m

$427

CharlestonOntario

CHS - ONT

CHSONT

Charleston

sáb. 11/1

2:30 pm-7:19 pm

1 stop7h 49m

Ontario

mié. 11/5

11:36 am-8:51 pm

1 stop6h 15m

$432

CharlestonOntario

CHS - ONT

CHSONT

Charleston

mar. 12/30

5:30 am-10:05 am

1 stop7h 35m

Ontario

mié. 1/7

10:30 pm-9:29 am

1 stop7h 59m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 20 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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, 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 $258). 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 octubre 16, 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 octubre 16, 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
8.0
Very good
7,984 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

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
8.0
Very good
7,984 reviews
Delta
8.0
Very good
7,984 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

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
11,043 reviews
Delta
8.0
Very good
7,984 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

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 7h 33m. Delta provides one of the quickest options available for as low as $297. 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 34% below the average price you’ll pay for this route.

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

    $149 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $195 and $218, 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 January is currently the most expensive (average of $258). 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 octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$267Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$332FlexibilityNo cancel feeOn-timeN/A

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