What are the cheapest airlines flying from Ontario to Charleston round-trip?

United Airlines, at $276, was found to be the cheapest airline from Ontario to Charleston.Alternate airlines to your destination round-trip include Delta and American Airlines. Users have found that United Airlines is 41% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $141 on American Airlines. Other airlines that offer cheap prices include Delta from $149 and United Airlines from $186 one-way.

What is the cheapest day to fly from Ontario to Charleston?

Travelers seeking maximum savings on their Ontario to Charleston flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Ontario to Charleston?

Before booking your flight from Ontario to Charleston check out the most popular airlines for this route: American Airlines, Delta or Breeze Airways.

What is the cheapest day to fly round-trip from Ontario to Charleston?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Charleston. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ontario to Charleston?

To save on the cost of your flight from Ontario to Charleston, book at least 41 days before your planned departure. Booking around this time can save you about 69% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $328 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $455.

What is the cheapest month to fly from Ontario to Charleston?

August can be a great time to fly to Charleston from Ontario with a flight ticket averaging about $373. Cheapflights users have found deals in the month of August for as cheap as $119. The most expensive prices can be found in the month of March.

Most accurate provider : When it comes to deals on Ontario-Charleston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Charleston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Charleston flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Charleston 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 Ontario-Charleston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Charleston that include hotel bookings?

Yes. In addition to deals on Ontario to Charleston flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Charleston?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Charleston.

Can I find deals for business class flights from Ontario to Charleston?

Yes. Cheapflights offers flight deals from Ontario to Charleston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$141+ Flights from Ontario to Charleston

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Find cheap flights from Ontario to Charleston 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.

The best prices from Ontario to Charleston are usually found in January or September, booked 32 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from Ontario to Charleston

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$276 (United Airlines)
One-way from	$141 (American Airlines)
Popular in	November
Cheapest in	January
Average price	$330

Provider with most accurate pricing for Ontario-Charleston flight deals.

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Provider most trusted by Cheapflights users for Ontario-Charleston flights.

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From Ontario to Charleston

Search Deals

One-way flight from Ontario to Charleston

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($92 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2025

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Find flight deals from Ontario to Charleston

Cheapest flights from Ontario to Charleston
Explore the most affordable flight options available from Ontario to Charleston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 24, 2025.

Tue 3/186:45 pmONT - CHS

2 stops12h 19mUnited Airlines

Tue 3/254:51 pmCHS - ONT

1 stop8h 08mUnited Airlines

Deal found 1/23

$276

Sat 2/221:05 pmONT - CHS

1 stop7h 51mDelta

Sat 3/85:00 pmCHS - ONT

1 stop8h 52mDelta

Deal found 1/23

$297

Wed 3/57:30 pmONT - CHS

2 stops10h 05mAmerican Airlines

Mon 3/107:18 pmCHS - ONT

1 stop7h 36mAmerican Airlines

Deal found 1/23

$299

Wed 3/510:55 amONT - CHS

1 stop8h 55mSouthwest

Mon 3/103:00 pmCHS - ONT

1 stop9h 10mSouthwest

Deal found 1/23

$344

Fri 11/146:55 pmONT - CHS

1 stop19h 36mAlaska Airlines

Sun 11/166:45 pmCHS - ONT

1 stop18h 54mAlaska Airlines

Deal found 1/23

$364

Best flights from Ontario to Charleston
Discover carefully curated flight deals from Ontario to Charleston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 24, 2025.

Tue 3/186:45 pmONT - CHS

2 stops12h 19mUnited Airlines

Tue 3/254:51 pmCHS - ONT

1 stop8h 08mUnited Airlines

Deal found 1/23

$276

Sat 2/221:05 pmONT - CHS

1 stop7h 51mDelta

Sat 3/85:00 pmCHS - ONT

1 stop8h 52mDelta

Deal found 1/23

$297

Wed 3/57:30 pmONT - CHS

2 stops10h 05mAmerican Airlines

Mon 3/107:18 pmCHS - ONT

1 stop7h 36mAmerican Airlines

Deal found 1/23

$299

Wed 3/510:55 amONT - CHS

1 stop8h 55mSouthwest

Mon 3/103:00 pmCHS - ONT

1 stop9h 10mSouthwest

Deal found 1/23

$344

Wed 3/511:45 amONT - CHS

2 stops26h 51mAlaska Airlines

Mon 3/106:36 pmCHS - ONT

2 stops25h 23mAlaska Airlines

Deal found 1/23

$392

Last-minute flights from Ontario to Charleston
Discover last-minute flight deals from Ontario to Charleston. Data last updated January 24, 2025 and is based on user searches.

Wed 1/2911:33 amONT - CHS

1 stop26h 59mAlaska Airlines

Mon 2/36:32 pmCHS - ONT

1 stop19h 17mAlaska Airlines

Deal found 1/23

$789

Fri 1/311:00 pmONT - CHS

1 stop6h 37mDelta

Tue 2/46:40 amCHS - ONT

1 stop8h 10mDelta

Deal found 1/23

$657

Fri 1/315:10 amONT - CHS

1 stop7h 05mUnited Airlines

Sat 2/14:15 pmCHS - ONT

1 stop7h 36mUnited Airlines

Deal found 1/22

$1,169

Fri 2/1410:51 amONT - CHS

1 stop8h 48mAmerican Airlines

Sun 2/167:18 pmCHS - ONT

1 stop7h 35mAmerican Airlines

Deal found 1/22

$331

Fri 2/141:00 pmONT - CHS

1 stop7h 40mSouthwest

Mon 2/178:10 amCHS - ONT

2 stops11h 10mSouthwest

Deal found 1/22

$427

Sat 2/221:05 pmONT - CHS

1 stop7h 51mDelta

Sat 3/85:00 pmCHS - ONT

1 stop8h 52mDelta

Deal found 1/23

$297

Mon 2/2411:45 amONT - CHS

2 stops26h 51mAlaska Airlines

Fri 3/76:36 pmCHS - ONT

1 stop28h 41mAlaska Airlines

Deal found 1/23

$397

Thu 2/275:05 amONT - CHS

1 stop6h 58mUnited Airlines

Wed 4/24:12 pmCHS - ONT

1 stop7h 30mUnited Airlines

Deal found 1/23

$389

One-way flights from Ontario to Charleston
Search for one-way flight options from Ontario to Charleston. Find affordable one-way fares based on user searches. Data last updated January 24, 2025.

Wed 3/57:30 pmONT - CHS

2 stops10h 05mAmerican Airlines

Deal found 1/23

$141

Tue 4/227:00 amONT - CHS

1 stop8h 54mDelta

Deal found 1/23

$149

Sat 2/226:00 amONT - CHS

1 stop7h 28mUnited Airlines

Deal found 1/22

$186

Thu 3/278:05 amONT - CHS

2 stops10h 50mSouthwest

Deal found 1/23

$314

Sat 2/2211:45 amONT - CHS

2 stops26h 51mAlaska Airlines

Deal found 1/22

$315

Find flights from Ontario to Charleston within your budget

Fly from

Fly to

Route

Depart

Return

Price

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Tue 3/18

6:45 pm-10:04 am

2 stops12h 19m

Charleston

Tue 3/25

4:51 pm-9:59 pm

1 stop8h 08m

$276

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Sat 2/22

1:05 pm-11:56 pm

1 stop7h 51m

Charleston

Sat 3/8

5:00 pm-10:52 pm

1 stop8h 52m

$297

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Wed 3/5

7:30 pm-8:35 am

2 stops10h 05m

Charleston

Mon 3/10

7:18 pm-11:54 pm

1 stop7h 36m

$299

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Wed 3/5

10:55 am-10:50 pm

1 stop8h 55m

Charleston

Mon 3/10

3:00 pm-9:10 pm

1 stop9h 10m

$344

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Wed 3/5

11:45 am-5:36 pm

2 stops26h 51m

Charleston

Mon 3/10

6:36 pm-4:59 pm

2 stops25h 23m

$392

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Wed 3/5

7:30 pm-8:35 am

2 stops10h 05m

$141

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Tue 4/22

7:00 am-6:54 pm

1 stop8h 54m

$149

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Sat 2/22

6:00 am-4:28 pm

1 stop7h 28m

$186

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Thu 3/27

8:05 am-9:55 pm

2 stops10h 50m

$314

OntarioCharleston

ONT - CHS

ONTCHS

Ontario

Sat 2/22

11:45 am-5:36 pm

2 stops26h 51m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Compare providers for flights from Ontario to Charleston

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Charleston in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy2 stars	Trust 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 Ontario-Charleston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Charleston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Charleston flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Charleston 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 Ontario-Charleston 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 Ontario to Charleston

Have a flexible travel schedule? Discover the best time to fly to Charleston from Ontario 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.

Travel insights for flights from Ontario to Charleston

Get recent, data-driven insights about flights from Ontario to Charleston including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to Charleston?

To ensure you get the cheapest price possible for a flight from Ontario to Charleston, you should look to book at least 31 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Ontario to Charleston?

Currently, August is the cheapest month in which you can book a flight from Ontario to Charleston (average of $217). Flying from Ontario to Charleston in March is currently the most expensive (average of $335). 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 ONT to CHS?

One of the essential ways to save on airfare from Ontario to Charleston is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 5% on airfare.

Rainfall in Charleston by month

In terms of precipitation, rainfall in Charleston ranges from 2.4 - 7.2 inches per month. August is typically the wettest month, when rainfall can reach 7.2 in. November is typically the driest time to visit Charleston when rainfall is around 2.4 in.

Temperature in Charleston by month

If weather is an important factor for your trip to Charleston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Charleston

To help decide which airline to fly from Ontario to Charleston, see what other customers have to say about United Airlines, Delta and Alaska Airlines. 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.

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest

8.1

Very good

4,647 reviews

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines

8.0

Very good

9,699 reviews

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta

8.0

Very good

8,508 reviews

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines

7.4

Good

8,971 reviews

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,647 reviews

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

What are the cheapest airlines flying from Ontario to Charleston round-trip?
United Airlines, at $276, was found to be the cheapest airline from Ontario to Charleston.Alternate airlines to your destination round-trip include Delta and American Airlines. Users have found that United Airlines is 41% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Ontario to Charleston one-way?
One-way options have recently been found by users for as low as $141 on American Airlines. Other airlines that offer cheap prices include Delta from $149 and United Airlines from $186 one-way.
Can I find deals for flights from Ontario to Charleston that include hotel bookings?
Yes. In addition to deals on Ontario to Charleston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Charleston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Charleston.
Can I find deals for business class flights from Ontario to Charleston?
Yes. Cheapflights offers flight deals from Ontario to Charleston 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 Ontario to Charleston?
Currently, August is the cheapest month in which you can book a flight from Ontario to Charleston (average of $217). Flying from Ontario to Charleston in March is currently the most expensive (average of $335). 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.