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 $228. Other airlines that can offer you cheap pricing are Delta, from $317, and Southwest, from $322. You may be able to fly from Charleston to San Antonio for 45% less than the average price by searching for these airlines.

What is the cheapest day to fly from Charleston to San Antonio?

Travelers seeking maximum savings on their Charleston to San Antonio flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday afternoons 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 Charleston to San Antonio?

When booking a flight from Charleston to San Antonio, you may want to consider flying on American Airlines, Delta or Spirit Airlines as they are the most popular for this route.

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

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 60 days in advance, which can save you up to 132% on flights from Charleston to San Antonio compared to booking the week you need them. Waiting 60 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $517. For sooner than that we have options available in the next 3 days from $786.

What is the cheapest month to fly from Charleston to San Antonio?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, May can be a great choice for travel to San Antonio. Flights to San Antonio from Charleston in May are about $416 on average during May, but can be found for as low as $268.

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.

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.

$228+ Flights from Charleston to San Antonio - Compare & Save Big

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1. Tell us where you want to go

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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

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$228 (Mytrip)
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

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 ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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 May 12, 2025.

Thu 6/129:42 amCHS - SAT

1 stop14h 27mSpirit Airlines

Sat 6/147:05 amSAT - CHS

1 stop24h 32mSpirit Airlines

Deal found 5/10

$228

Fri 5/3012:22 pmCHS - SAT

1 stop5h 52mDelta

Tue 6/35:20 amSAT - CHS

1 stop7h 13mDelta

Deal found 5/12

$317

Fri 5/304:10 pmCHS - SAT

2 stops8h 15mSouthwest

Tue 6/33:40 pmSAT - CHS

1 stop5h 05mSouthwest

Deal found 5/11

$322

Mon 6/307:03 amCHS - SAT

1 stop12h 16mMultiple Airlines

Wed 7/210:00 amSAT - CHS

1 stop21h 37mMultiple Airlines

Deal found 5/12

$333

Thu 8/76:06 pmCHS - SAT

2 stops6h 34mAmerican Airlines

Sun 8/102:17 pmSAT - CHS

1 stop6h 47mAmerican Airlines

Deal found 5/12

$392

Sun 6/15:50 amCHS - SAT

1 stop6h 10mUnited Airlines

Sun 6/222:24 pmSAT - CHS

1 stop6h 36mUnited Airlines

Deal found 5/10

$397

Mon 8/46:03 pmCHS - SAT

2 stops30h 52mAlaska Airlines

Wed 8/67:00 amSAT - CHS

2 stops34h 34mAlaska Airlines

Deal found 5/11

$934

Best flights from Charleston to San Antonio
Discover carefully curated flight deals from Charleston to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 12, 2025.

Thu 6/129:42 amCHS - SAT

1 stop14h 27mSpirit Airlines

Sat 6/147:05 amSAT - CHS

1 stop24h 32mSpirit Airlines

Deal found 5/10

$228

Fri 5/3012:22 pmCHS - SAT

1 stop5h 52mDelta

Tue 6/35:20 amSAT - CHS

1 stop7h 13mDelta

Deal found 5/12

$317

Fri 5/304:10 pmCHS - SAT

2 stops8h 15mSouthwest

Tue 6/33:40 pmSAT - CHS

1 stop5h 05mSouthwest

Deal found 5/11

$322

Mon 6/307:03 amCHS - SAT

1 stop12h 16mMultiple Airlines

Wed 7/210:00 amSAT - CHS

1 stop21h 37mMultiple Airlines

Deal found 5/12

$333

Thu 8/76:06 pmCHS - SAT

2 stops6h 34mAmerican Airlines

Sun 8/108:00 amSAT - CHS

1 stop4h 55mAmerican Airlines

Deal found 5/11

$392

Sun 6/15:50 amCHS - SAT

1 stop6h 10mUnited Airlines

Sun 6/222:24 pmSAT - CHS

1 stop6h 36mUnited Airlines

Deal found 5/10

$397

Mon 8/46:03 pmCHS - SAT

2 stops30h 52mAlaska Airlines

Wed 8/67:00 amSAT - CHS

2 stops34h 34mAlaska Airlines

Deal found 5/11

$934

Last-minute flights from Charleston to San Antonio
Discover last-minute flight deals from Charleston to San Antonio. Data last updated May 12, 2025 and is based on user searches.

Sat 5/175:35 amCHS - SAT

1 stop5h 02mDelta

Sun 5/188:00 amSAT - CHS

1 stop6h 54mDelta

Deal found 5/12

$751

Wed 5/213:10 pmCHS - SAT

1 stop8h 06mAmerican Airlines

Sat 5/242:34 pmSAT - CHS

1 stop7h 21mAmerican Airlines

Deal found 5/11

$462

Wed 5/214:30 pmCHS - SAT

1 stop7h 29mUnited Airlines

Sat 5/242:10 pmSAT - CHS

2 stops8h 49mUnited Airlines

Deal found 5/11

$535

Fri 5/3012:22 pmCHS - SAT

1 stop5h 52mDelta

Tue 6/35:20 amSAT - CHS

1 stop7h 13mDelta

Deal found 5/12

$317

Fri 5/304:10 pmCHS - SAT

2 stops8h 15mSouthwest

Tue 6/33:40 pmSAT - CHS

1 stop5h 05mSouthwest

Deal found 5/11

$322

Sun 6/15:50 amCHS - SAT

1 stop6h 10mUnited Airlines

Sun 6/222:24 pmSAT - CHS

1 stop6h 36mUnited Airlines

Deal found 5/10

$397

Sun 6/85:00 amCHS - SAT

1 stop5h 05mAmerican Airlines

Wed 6/116:32 amSAT - CHS

1 stop6h 21mAmerican Airlines

Deal found 5/11

$442

Sun 6/86:56 pmCHS - SAT

2 stops28h 02mAlaska Airlines

Wed 6/116:30 amSAT - CHS

2 stops15h 02mAlaska Airlines

Deal found 5/11

$1,034

Thu 6/129:42 amCHS - SAT

1 stop14h 27mSpirit Airlines

Sat 6/147:05 amSAT - CHS

1 stop24h 32mSpirit Airlines

Deal found 5/10

$228

Mon 6/307:03 amCHS - SAT

1 stop12h 16mMultiple Airlines

Wed 7/210:00 amSAT - CHS

1 stop21h 37mMultiple Airlines

Deal found 5/12

$333

Cheapflights Fare Finder

Use the filters below to find and compare flights from Charleston to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 6/12

9:42 am-11:09 pm

1 stop14h 27m

San Antonio

Sat 6/14

7:05 am-8:37 am

1 stop24h 32m

$228

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Fri 5/30

12:22 pm-5:14 pm

1 stop5h 52m

San Antonio

Tue 6/3

5:20 am-1:33 pm

1 stop7h 13m

$317

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Fri 5/30

4:10 pm-11:25 pm

2 stops8h 15m

San Antonio

Tue 6/3

3:40 pm-9:45 pm

1 stop5h 05m

$322

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Mon 6/30

7:03 am-6:19 pm

1 stop12h 16m

San Antonio

Wed 7/2

10:00 am-8:37 am

1 stop21h 37m

$333

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Thu 8/7

6:06 pm-11:40 pm

2 stops6h 34m

San Antonio

Sun 8/10

2:17 pm-10:04 pm

1 stop6h 47m

$392

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Sun 6/1

5:50 am-11:00 am

1 stop6h 10m

San Antonio

Sun 6/22

2:24 pm-10:00 pm

1 stop6h 36m

$397

CharlestonSan Antonio

CHS - SAT

CHSSAT

Charleston

Mon 8/4

6:03 pm-11:55 pm

2 stops30h 52m

San Antonio

Wed 8/6

7:00 am-6:34 pm

2 stops34h 34m

$934

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Compare providers for flights from Charleston to San Antonio

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.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 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 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?

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?

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

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

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

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

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

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

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

7,950 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

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

8,724 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

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

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

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 $228. Other airlines that can offer you cheap pricing are Delta, from $317, and Southwest, from $322. You may be able to fly from Charleston to San Antonio for 45% less than the average price by searching for these airlines.
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.

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Other flights to San Antonio

Top 5 airlines flying from Charleston to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$157	Average$228	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$198	Average$409	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$291	Average$381	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$300	Average$436	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$304	Average$422	FlexibilityNo cancel fee	On-time71%

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$228+ Cheap flights from Charleston to San Antonio (CHS - SAT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Charleston to San Antonio with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Charleston to San Antonio

Cheapest flights from Charleston to San AntonioExplore 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 12, 2025.

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 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Charleston to San Antonio that are best for you.

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.

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.

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 9, 2025.

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

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 12, 2025.

Rainfall in San Antonio by month

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

Temperature in San Antonio by month

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

Reviews of airlines servicing San Antonio

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.

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?

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

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

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

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

Traveling to a place near Charleston?

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Alternative routes for Charleston to San Antonio

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Top 5 airlines flying from Charleston to San Antonio

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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 12, 2025.