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$140+ Cheap flights from Charleston to San Antonio (CHS - SAT)

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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SAT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Charleston to San Antonio are usually found in May or August, booked 64 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Charleston to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Charleston (CHS) to San Antonio (SAT). 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 July 30, 2025.

Round-trip from

$261
(CheapOair)

One-way from

$140
(FlightHub)

Popular in

November

Cheapest in

May

Average price

$416
From Charleston to San Antonio
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One-way flight from Charleston to San Antonio
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Highest demand for flights based on searches. 10% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Charleston to San Antonio

Cheapest flights from Charleston to San Antonio
Explore the most affordable flight options available from Charleston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:30 amCHS - SAT
1 stop8h 42mSpirit Airlines
Sun 11/212:45 pmSAT - CHS
1 stop18h 30mSpirit Airlines
Deal found 7/29$260
This Delta deal was found by Cheapflights users on 7/30. 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.
Fri 10/312:55 pmCHS - SAT
1 stop5h 11mDelta
Mon 10/65:05 pmSAT - CHS
1 stop5h 54mDelta
Deal found 7/30$297
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/216:06 pmCHS - SAT
2 stops6h 34mAmerican Airlines
Sun 8/247:02 amSAT - CHS
1 stop5h 48mAmerican Airlines
Deal found 7/29$302
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/213:32 pmCHS - SAT
2 stops23h 21mMultiple Airlines
Sun 8/244:50 pmSAT - CHS
2 stops25h 22mMultiple Airlines
Deal found 7/29$335
This Southwest deal was found by Cheapflights users on 7/28. 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.
Wed 11/196:00 amCHS - SAT
2 stops8h 35mSouthwest
Sat 11/2211:35 amSAT - CHS
1 stop6h 10mSouthwest
Deal found 7/28$347
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 10/36:02 amCHS - SAT
1 stop6h 56mUnited Airlines
Mon 10/611:45 amSAT - CHS
2 stops10h 59mUnited Airlines
Deal found 7/29$397

Cheapflights Fare Finder

 
Customize your flight search to find flights from Charleston to San Antonio 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 July 30, 2025.
Use the filters below to find and compare flights from Charleston to San Antonio that are best for you.

Fly from

Charleston

Fly to

San Antonio

Route

Depart

Return

Price

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 8/21

8:17 pm-4:48 pm

1 stop21h 31m

San Antonio

Sun 8/24

12:39 pm-9:33 am

1 stop19h 54m

$261

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Fri 10/3

12:55 pm-5:06 pm

1 stop5h 11m

San Antonio

Mon 10/6

5:05 pm-11:59 pm

1 stop5h 54m

$297

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 8/21

6:06 pm-11:40 pm

2 stops6h 34m

San Antonio

Sun 8/24

7:02 am-1:50 pm

1 stop5h 48m

$302

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 8/21

3:32 pm-1:53 pm

2 stops23h 21m

San Antonio

Sun 8/24

4:50 pm-7:12 pm

2 stops25h 22m

$335

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 8/28

7:35 pm-11:25 pm

1 stop4h 50m

San Antonio

Tue 9/2

7:00 am-5:05 pm

2 stops9h 05m

$347

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Fri 10/3

6:02 am-11:58 am

1 stop6h 56m

San Antonio

Mon 10/6

11:45 am-11:44 pm

2 stops10h 59m

$397

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sun 9/14

12:10 pm-6:12 pm

1 stop7h 02m

$140

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sun 8/17

9:36 pm-4:48 pm

2 stops20h 12m

$212

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sat 8/16

2:15 pm-10:16 pm

1 stop9h 01m

$224

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sat 8/16

6:05 am-3:25 pm

2 stops10h 20m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Charleston to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio 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 San Antonio

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

Use this chart to determine the optimal time to book a round-trip flight from Charleston to San Antonio. Price data was last updated on July 25, 2025.

The best time to book flights from Charleston to San Antonio is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Charleston to San Antonio (average of $295). Flying from Charleston to San Antonio in March is currently the most expensive (average of $376). 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 SAT?

Find hourly flight availability from Charleston to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

It’s typically best to fly out from Charleston to San Antonio at noon. Doing so could potentially save you 45% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated July 30, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Charleston to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Charleston to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Charleston to San Antonio round-trip?

    Cheapflights users have booked flights from Charleston to San Antonio round-trip from $261. Other airlines that can offer you cheap pricing are Delta, from $297, and American Airlines, from $302. You may be able to fly from Charleston to San Antonio for 37% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $140 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $224 and United Airlines from $229 one-way.

  • Can I find deals for flights from Charleston to San Antonio that include hotel bookings?

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

  • How can I find direct flights from Charleston to San Antonio?

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

  • Can I find deals for business class flights from Charleston to San Antonio?

    Yes. Cheapflights offers flight deals from Charleston to San Antonio 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 San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Charleston to San Antonio (average of $295). Flying from Charleston to San Antonio in March is currently the most expensive (average of $376). 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

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels

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Top 4 airlines flying from Charleston to San Antonio

Discover the top 4 airlines that operate flights from Charleston to San Antonio. 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$291Average$385FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$300Average$436FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$300Average$433FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$412FlexibilityNo cancel feeOn-time69%

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