HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$160+ 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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ONT
déc. 5 — déc. 121
ven. 12/5
ven. 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Charleston to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 novembre 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$328
(Delta)

One-way from

$160
(Trip.com)

Popular in

April

Cheapest in

June

Average price

$369
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. 16% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 novembre 5, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
ven. 12/57:24 pmCHS - ONT
1 stop26h 09mAlaska Airlines
dim. 12/76:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 11/3$364
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
dim. 12/77:24 pmCHS - ONT
1 stop18h 55mAlaska Airlines
mar. 12/96:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 11/3$385
This Delta deal was found by Cheapflights users on 11/3. 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.
dim. 12/215:58 pmCHS - ONT
1 stop8h 25mDelta
lun. 12/2910:29 pmONT - CHS
1 stop9h 01mDelta
Deal found 11/3$462
This Southwest deal was found by Cheapflights users on 11/3. 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.
ven. 12/196:10 amCHS - ONT
2 stops9h 40mSouthwest
sam. 12/274:30 pmONT - CHS
1 stop6h 20mSouthwest
Deal found 11/3$463
This United Airlines deal was found by Cheapflights users on 11/3. 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.
sam. 12/204:59 pmCHS - ONT
1 stop8h 26mUnited Airlines
sam. 12/2711:59 pmONT - CHS
1 stop7h 36mUnited Airlines
Deal found 11/3$468
This Southwest deal was found by Cheapflights users on 11/3. 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.
sam. 12/201:55 pmCHS - ONT
2 stops13h 10mSouthwest
sam. 12/274:30 pmONT - CHS
1 stop6h 20mSouthwest
Deal found 11/3$484
This Delta deal was found by Cheapflights users on 11/5. 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.
lun. 12/225:58 pmCHS - ONT
1 stop8h 25mDelta
lun. 12/2910:29 pmONT - CHS
1 stop9h 01mDelta
Deal found 11/5$497
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
mer. 11/266:19 pmCHS - ONT
1 stop24h 35mAlaska Airlines
mar. 12/26:00 amONT - CHS
1 stop9h 24mAlaska Airlines
Deal found 11/3$517

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 novembre 5, 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

jeu. 1/1

6:00 am-10:00 am

1 stop7h 00m

Ontario

mar. 1/6

10:30 pm-9:19 am

1 stop7h 49m

$328

CharlestonOntario

CHS - ONT

CHSONT

Charleston

ven. 12/5

7:24 pm-6:33 pm

1 stop26h 09m

Ontario

dim. 12/7

6:00 am-6:24 pm

1 stop9h 24m

$364

CharlestonOntario

CHS - ONT

CHSONT

Charleston

dim. 12/7

7:24 pm-11:19 am

1 stop18h 55m

Ontario

mar. 12/9

6:00 am-6:24 pm

1 stop9h 24m

$385

CharlestonOntario

CHS - ONT

CHSONT

Charleston

jeu. 1/1

6:44 am-1:52 pm

2 stops10h 08m

Ontario

mar. 1/6

9:59 am-11:07 pm

2 stops10h 08m

$449

CharlestonOntario

CHS - ONT

CHSONT

Charleston

sam. 1/17

4:01 pm-8:58 pm

1 stop7h 57m

Ontario

dim. 1/25

6:00 am-4:10 pm

1 stop7h 10m

$461

CharlestonOntario

CHS - ONT

CHSONT

Charleston

dim. 12/21

5:58 pm-11:23 pm

1 stop8h 25m

Ontario

lun. 12/29

10:29 pm-10:30 am

1 stop9h 01m

$462

CharlestonOntario

CHS - ONT

CHSONT

Charleston

ven. 12/19

6:10 am-12:50 pm

2 stops9h 40m

Ontario

sam. 12/27

4:30 pm-1:50 am

1 stop6h 20m

$463

CharlestonOntario

CHS - ONT

CHSONT

Charleston

lun. 12/22

5:58 pm-11:23 pm

1 stop8h 25m

Ontario

lun. 12/29

10:29 pm-10:30 am

1 stop9h 01m

$497

CharlestonOntario

CHS - ONT

CHSONT

Charleston

lun. 1/5

12:25 pm-12:14 am

2 stops14h 49m

Ontario

jeu. 1/8

6:00 am-6:22 pm

1 stop9h 22m

$512

CharlestonOntario

CHS - ONT

CHSONT

Charleston

mer. 11/26

4:11 pm-8:44 pm

1 stop7h 33m

Ontario

mar. 12/2

5:05 am-7:30 pm

2 stops11h 25m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 19 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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 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 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 novembre 5, 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 novembre 5, 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
8,004 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

7.9

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
8,004 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

7.9

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
11,042 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

7.9

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. Delta provides one of the quickest options available for as low as $328. 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.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Charleston to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Las Vegas flights
Charlotte to Los Angeles flights
Charlotte to San Francisco flights
Charlotte to Ontario flights
Charlotte to San Diego flights
Charleston to Las Vegas flights
Greenville to Las Vegas flights
Charlotte to Santa Ana flights
Myrtle Beach to Las Vegas flights
Savannah to Las Vegas flights
Charleston to Los Angeles flights
Columbia to Las Vegas flights
Charlotte to Sacramento flights
Charlotte to San Jose flights
Greenville to San Francisco flights
Charleston to San Francisco flights
Augusta to Las Vegas flights
Columbia to San Diego flights
Charlotte to Fresno flights
Charlotte to Burbank flights
Greenville to Palm Springs flights
Savannah to San Francisco flights
Greenville to Santa Ana flights
Charleston to Sacramento flights
Savannah to Los Angeles flights
Columbia to Los Angeles flights
Charlotte to Palm Springs flights
Greenville to San Jose flights
Greenville to Los Angeles flights
Charleston to Palm Springs flights
Greenville to San Diego flights
Charlotte to Reno flights
Myrtle Beach to Los Angeles flights
Charlotte to Long Beach flights
Columbia to Ontario flights
Charleston to San Diego flights
Augusta to Los Angeles flights
Greenville to Ontario flights
Savannah to Ontario flights
Myrtle Beach to San Diego flights
Greenville to Oakland flights
Charlotte to Santa Barbara flights
Charlotte to Monterey flights
Augusta to San Diego flights
Greenville to Sacramento flights
Savannah to Palm Springs flights
Savannah to San Diego flights
Greenville to Fresno flights
Charleston to Santa Ana flights

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 novembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$267Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$332FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.