HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$160+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SAT
May 26 — Jun 21
Mon 5/26
Mon 6/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Charleston to San Antonio 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.

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 May 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$297
(Mytrip)

One-way from

$160
(Delta)

Popular in

November

Cheapest in

May

Average price

$362
Provider with most accurate pricing for Charleston-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Charleston-San Antonio flights.
Search Deals
From Charleston to San Antonio
Search Deals
One-way flight from Charleston to San Antonio
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 21, 2025.

This Mytrip deal was found by Cheapflights users on 5/20. 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.
Tue 6/247:03 amCHS - SAT
2 stops29h 34mSpirit Airlines
Fri 6/279:44 amSAT - CHS
1 stop11h 45mSpirit Airlines
Deal found 5/20$297
This Delta deal was found by Cheapflights users on 5/20. 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 8/128:00 amCHS - SAT
1 stop7h 31mDelta
Sat 8/165:45 pmSAT - CHS
1 stop5h 06mDelta
Deal found 5/20$342
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Tue 8/1212:17 pmCHS - SAT
2 stops7h 17mAmerican Airlines
Sat 8/166:29 amSAT - CHS
1 stop6h 17mAmerican Airlines
Deal found 5/19$347
This Southwest deal was found by Cheapflights users on 5/20. 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 7/94:55 pmCHS - SAT
1 stop6h 40mSouthwest
Sun 7/135:05 amSAT - CHS
1 stop7h 55mSouthwest
Deal found 5/20$353
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Tue 6/172:44 pmCHS - SAT
1 stop6h 38mUnited Airlines
Sat 6/2111:41 amSAT - CHS
2 stops8h 51mUnited Airlines
Deal found 5/20$358
This Mytrip deal was found by Cheapflights users on 5/20. 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.
Wed 6/411:59 amCHS - SAT
2 stops25h 33mMultiple Airlines
Sun 6/810:34 amSAT - CHS
2 stops28h 54mMultiple Airlines
Deal found 5/20$443
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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 7/93:25 pmCHS - SAT
2 stops15h 15mAlaska Airlines
Mon 7/147:37 pmSAT - CHS
2 stops22h 40mAlaska Airlines
Deal found 5/20$974

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 May 21, 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

Tue 6/24

7:03 am-11:37 am

2 stops29h 34m

San Antonio

Fri 6/27

9:44 am-10:29 pm

1 stop11h 45m

$297

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Tue 7/29

6:23 pm-12:14 am

1 stop6h 51m

San Antonio

Tue 8/26

8:00 am-1:50 pm

1 stop4h 50m

$319

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Tue 7/29

6:10 am-11:35 am

2 stops6h 25m

San Antonio

Tue 8/26

2:40 pm-9:15 pm

1 stop5h 35m

$324

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Tue 8/12

12:17 pm-6:34 pm

2 stops7h 17m

San Antonio

Sat 8/16

6:29 am-1:46 pm

1 stop6h 17m

$347

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Tue 6/17

2:44 pm-8:22 pm

1 stop6h 38m

San Antonio

Sat 6/21

11:41 am-9:32 pm

2 stops8h 51m

$358

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Wed 6/4

11:59 am-12:32 pm

2 stops25h 33m

San Antonio

Sun 6/8

10:34 am-4:28 pm

2 stops28h 54m

$443

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Wed 7/9

3:25 pm-5:40 am

2 stops15h 15m

San Antonio

Mon 7/14

7:37 pm-7:17 pm

2 stops22h 40m

$974

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Tue 6/24

7:25 am-11:15 am

1 stop4h 50m

$160

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Fri 6/6

12:33 pm-9:50 pm

1 stop10h 17m

$186

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sat 7/12

7:44 pm-12:43 am

1 stop5h 59m

$194

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 13 results
1
2

Compare providers for flights from Charleston to San Antonio

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 San Antonio in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Charleston-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Charleston-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Charleston-San Antonio 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-San Antonio 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 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 May 16, 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 May 21, 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.

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Antonio, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 May 21, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Charleston to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,745 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $297. Other airlines that can offer you cheap pricing are Delta, from $319, and Southwest, from $324. You may be able to fly from Charleston to San Antonio for 28% 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 $160 on Delta. Other airlines that offer cheap prices include Spirit Airlines from $186 and American Airlines from $194 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 Charleston?

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

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 San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Hobby flights
Charlotte to Dallas/Fort Worth flights
Charlotte to George Bush Intcntl flights
Charlotte to Love Field flights
Charlotte to Austin flights
Greenville to Dallas/Fort Worth flights
Charleston to Hobby flights
Savannah to Hobby flights
Savannah to George Bush Intcntl flights
Charleston to Dallas/Fort Worth flights
Greenville to Hobby flights
Charlotte to San Antonio flights
Columbia to Dallas/Fort Worth flights
Greenville to George Bush Intcntl flights
Charleston to George Bush Intcntl flights
Savannah to Dallas/Fort Worth flights
Columbia to Hobby flights
Savannah to Love Field flights
Columbia to Austin flights
Savannah to Austin flights
Columbia to George Bush Intcntl flights
Charleston to Austin flights
Myrtle Beach to Austin flights
Augusta to Dallas/Fort Worth flights
Charleston to Love Field flights
Columbia to San Antonio flights
Greenville to Love Field flights
Myrtle Beach to Hobby flights
Charlotte to El Paso flights
Greenville to Austin flights
Columbia to Love Field flights
Myrtle Beach to San Antonio flights
Savannah to San Antonio flights
Myrtle Beach to Dallas/Fort Worth flights
Greenville to El Paso flights
Myrtle Beach to George Bush Intcntl flights
Greenville to San Antonio flights
Charleston to El Paso flights
Augusta to George Bush Intcntl flights
Augusta to Hobby flights
Charlotte to Midland flights
Augusta to Love Field flights
Charlotte to Corpus Christi flights
Columbia to El Paso flights
Hilton Head Island to Dallas/Fort Worth flights
Augusta to Austin flights
Savannah to El Paso flights
Myrtle Beach to Love Field flights
Charlotte to McAllen flights

Top 5 airlines flying from Charleston to San Antonio

Discover the top 5 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 May 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$162Average$236FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$198Average$412FlexibilityNo cancel feeOn-time69%
DeltaCheapest$291Average$381FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$300Average$431FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$300Average$428FlexibilityNo cancel feeOn-time71%

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.