How long is the flight from Washington, D.C. to San Antonio?

Departing from Washington, D.C. to San Antonio will take you 3h 35m. There are 1405 mi between Washington, D.C. and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Washington, D.C. to San Antonio round-trip?

According to our current data, Frontier ($132), American Airlines ($249), and United Airlines ($249) offers the cheapest pricing from Washington, D.C. to San Antonio. You may be able to fly from Washington, D.C. to San Antonio for 65% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Washington, D.C. to San Antonio one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $72. Delta flights start at $144 while deals on United Airlines start at $145 one-way.

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.

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).

What are the most popular routes from Washington, D.C. to San Antonio?

The most popular flight routes from Washington, D.C. to San Antonio are Washington, D.C. Dulles Intl - San Antonio, Washington, D.C. Reagan-National - San Antonio and Baltimore/Washington - San Antonio.

What are the cheapest flights from Washington, D.C. to San Antonio?

Looking at all options, your cheapest flight can be booked for $193. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $259 on average, our data indicates $394 when flying from Washington, D.C. to San Antonio.

What are the most reliable airlines from Washington, D.C. to San Antonio?

The top 3 most reliable airlines when flying from Washington, D.C. to San Antonio are Mesa Airlines (100%), United Airlines (92%) and Air Canada (81%).

What are the most popular airlines that fly from Washington, D.C. to San Antonio?

Before booking your flight from Washington, D.C. to San Antonio check out the most popular airlines for this route: United Airlines, American Airlines or Southwest.

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

Most trusted provider : When it comes to deals on Washington, D.C.-San Antonio 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 Washington, D.C.-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to San Antonio from Washington, D.C.?

If you book a flight to San Antonio from Washington, D.C., you will be flying to San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 6 flights from Washington, D.C. to San Antonio per day from 6 different airlines.

Can I find deals for flights from Washington, D.C. to San Antonio that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to San Antonio?

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

Can I find deals for business class flights from Washington, D.C. to San Antonio?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$125+ Cheap Flights from Washington, D.C. to San Antonio

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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 Washington, D.C. to San Antonio are usually found in October or January, booked 80 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Washington, D.C. to San Antonio

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to San Antonio
Explore the most affordable flight options available from Washington, D.C. to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Thu 9/249:32 pm -

1 stop12h 38m

Mon 9/2810:05 am -

1 stop9h 39m

Deal found 8/25

$238

Thu 9/173:04 pm -

1 stop19h 06m

Wed 9/2310:03 am -

1 stop21h 28m

Deal found 8/26

$239

Sun 10/189:52 pm -

1 stop12h 16m

Fri 10/2310:03 am -

1 stop9h 54m

Deal found 8/25

$240

Thu 10/229:52 pm -

1 stop12h 16m

Mon 10/2610:03 am -

1 stop27h 05m

Deal found 8/23

$248

Sun 9/279:27 am -

1 stop24h 43m

Wed 9/3010:03 am -

1 stop21h 28m

Deal found 8/21

$249

Thu 9/109:32 pm -

1 stop12h 38m

Mon 9/1410:05 am -

1 stop9h 39m

Deal found 8/22

$259

Sun 10/253:04 pm -

1 stop19h 04m

Mon 11/210:13 am -

1 stop26h 55m

Deal found 8/24

$263

Tue 9/223:10 pm -

1 stop18h 57m

Fri 9/2510:05 am -

1 stop6h 22m

Deal found 8/25

$264

Thu 9/179:32 pm -

1 stop12h 38m

Mon 9/2110:05 am -

1 stop27h 06m

Deal found 8/25

$273

Tue 9/812:09 pm -

1 stop21h 58m

Fri 9/1110:05 am -

1 stop9h 39m

Deal found 8/25

$290

Thu 10/86:00 pm -

1 stop26h 26m

Sat 10/108:21 pm -

1 stop14h 43m

Deal found 8/23

$307

Fri 10/166:00 am -

1 stop16h 49m

Sun 10/1810:34 pm -

1 stop30h 46m

Deal found 8/26

$308

Best flights from Washington, D.C. to San Antonio
Discover carefully curated flight deals from Washington, D.C. to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Fri 11/1310:11 am -

1 stop8h 14m

Sat 11/142:00 pm -

1 stop5h 10m

Deal found 8/23

$314

Thu 10/298:25 am -

Nonstop3h 35m

Mon 11/25:15 am -

Nonstop3h 10m

Deal found 8/21

$317

Fri 9/256:10 am -

1 stop7h 01m

Sun 9/277:00 am -

Nonstop3h 20m

Deal found 8/24

$329

Fri 10/305:29 pm -

1 stop6h 38m

Tue 11/36:50 am -

1 stop6h 19m

Deal found 8/23

$314

Fri 9/186:00 am -

1 stop8h 40m

Wed 9/232:50 pm -

1 stop7h 15m

Deal found 8/25

$319

Thu 11/126:10 am -

2 stops10h 28m

Mon 11/165:30 am -

1 stop5h 06m

Deal found 8/24

$332

Thu 11/56:12 pm -

1 stop6h 14m

Sun 11/86:20 pm -

1 stop5h 22m

Deal found 8/25

$324

Fri 10/238:25 pm -

Nonstop3h 35m

Tue 10/275:15 am -

Nonstop3h 15m

Deal found 8/22

$343

Fri 10/3010:57 am -

1 stop6h 16m

Mon 11/25:00 pm -

1 stop6h 42m

Deal found 8/25

$324

Sat 9/1210:00 am -

2 stops7h 00m

Sat 9/196:35 am -

1 stop8h 20m

Deal found 8/21

$343

Thu 9/176:00 am -

1 stop6h 51m

Sat 9/194:12 pm -

1 stop6h 47m

Deal found 8/22

$379

Sat 10/245:36 pm -

1 stop5h 44m

Tue 11/35:00 pm -

1 stop6h 31m

Deal found 8/23

$327

Wed 10/149:10 am -

2 stops9h 15m

Mon 10/192:35 pm -

1 stop7h 55m

Deal found 8/25

$343

Tue 9/156:00 pm -

Nonstop3h 38m

Sat 9/199:10 am -

1 stop7h 42m

Deal found 8/22

$389

Thu 9/176:10 am -

1 stop5h 29m

Tue 9/222:30 pm -

1 stop6h 00m

Deal found 8/25

$327

Thu 9/246:00 am -

1 stop8h 40m

Mon 9/283:30 pm -

2 stops7h 25m

Deal found 8/23

$344

Wed 11/48:25 am -

Nonstop3h 53m

Tue 11/108:56 am -

1 stop7h 59m

Deal found 8/25

$389

Thu 11/1912:29 pm -

1 stop8h 19m

Mon 11/231:44 pm -

1 stop5h 57m

Deal found 8/23

$334

Thu 10/223:35 pm -

2 stops9h 00m

Sat 10/245:00 am -

1 stop8h 00m

Deal found 8/25

$344

Thu 11/1911:25 am -

1 stop5h 40m

Thu 11/265:30 am -

1 stop7h 24m

Deal found 8/24

$334

Fri 9/256:00 pm -

Nonstop3h 38m

Sat 9/267:00 am -

Nonstop3h 20m

Deal found 8/23

$408

Thu 10/223:35 pm -

2 stops9h 00m

Mon 10/264:45 pm -

1 stop5h 10m

Deal found 8/25

$344

Sat 9/511:06 am -

1 stop6h 33m

Sat 9/125:00 pm -

1 stop6h 41m

Deal found 8/21

$338

Tue 9/221:05 pm -

1 stop5h 38m

Tue 9/292:00 pm -

1 stop6h 02m

Deal found 8/25

$417

Wed 9/166:05 am -

2 stops9h 45m

Sat 9/198:35 am -

2 stops8h 25m

Deal found 8/21

$354

Fri 11/206:30 pm -

1 stop7h 03m

Sun 11/225:30 am -

1 stop4h 59m

Deal found 8/24

$339

Wed 10/149:10 am -

2 stops9h 15m

Fri 10/161:05 pm -

1 stop8h 00m

Deal found 8/25

$368

Fri 11/207:37 pm -

1 stop5h 56m

Sun 11/226:30 am -

1 stop6h 24m

Deal found 8/24

$339

Sat 10/318:10 am -

2 stops8h 30m

Wed 11/48:20 am -

2 stops6h 25m

Deal found 8/21

$373

Thu 11/1912:26 pm -

1 stop8h 12m

Sun 11/226:40 am -

1 stop6h 19m

Deal found 8/21

$359

Last-minute flights from Washington, D.C. to San Antonio
Discover last-minute flight deals from Washington, D.C. to San Antonio. Data last updated August 26, 2026 and is based on user searches.

Sun 9/66:24 am -

1 stop27h 32m

Wed 9/910:03 am -

1 stop21h 28m

Deal found 8/23

$310

Tue 9/812:09 pm -

1 stop21h 58m

Fri 9/1110:05 am -

1 stop9h 39m

Deal found 8/25

$290

Thu 9/109:32 pm -

1 stop12h 38m

Mon 9/1410:05 am -

1 stop9h 39m

Deal found 8/22

$259

Fri 9/116:00 am -

1 stop16h 03m

Tue 9/153:19 pm -

1 stop14h 01m

Deal found 8/22

$310

Sun 9/136:00 pm -

1 stop26h 25m

Wed 9/168:20 pm -

1 stop19h 39m

Deal found 8/25

$310

Sun 9/1311:12 am -

1 stop22h 58m

Wed 9/2310:03 am -

1 stop23h 24m

Deal found 8/21

$312

Thu 9/173:04 pm -

1 stop19h 06m

Wed 9/2310:03 am -

1 stop21h 28m

Deal found 8/25

$239

Thu 9/173:04 pm -

1 stop19h 06m

Mon 9/2110:05 am -

1 stop21h 26m

Deal found 8/24

$248

Mon 9/216:00 am -

1 stop16h 03m

Fri 9/2510:05 am -

1 stop23h 12m

Deal found 8/22

$308

Tue 9/223:10 pm -

1 stop18h 57m

Fri 9/2510:05 am -

1 stop6h 22m

Deal found 8/25

$264

Thu 9/249:32 pm -

1 stop12h 38m

Mon 9/2810:05 am -

1 stop9h 39m

Deal found 8/25

$238

Sun 9/279:32 pm -

1 stop12h 38m

Wed 9/3010:03 am -

1 stop21h 28m

Deal found 8/26

$249

One-way flights from Washington, D.C. to San Antonio
Search for one-way flight options from Washington, D.C. to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Thu 10/229:52 pm -

1 stop12h 16m

Deal found 8/26

$125

Sun 9/279:32 pm -

1 stop12h 38m

Deal found 8/26

$126

Tue 9/229:27 am -

1 stop24h 40m

Deal found 8/23

$130

Tue 10/205:40 am -

2 stops28h 28m

Deal found 8/23

$133

Mon 10/199:12 pm -

2 stops36h 56m

Deal found 8/25

$142

Tue 10/278:17 pm -

2 stops24h 08m

Deal found 8/26

$143

Mon 9/216:22 pm -

2 stops26h 03m

Deal found 8/24

$146

Sun 9/209:32 pm -

1 stop12h 38m

Deal found 8/23

$150

Wed 9/166:05 am -

2 stops9h 45m

Deal found 8/22

$150

Tue 9/86:24 am -

1 stop27h 43m

Deal found 8/25

$151

Sat 9/127:50 am -

2 stops25h 55m

Deal found 8/24

$153

Mon 11/169:06 pm -

2 stops23h 19m

Deal found 8/25

$163

Find flight deals from Washington, D.C. to San Antonio

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$238 (Frontier)
One-way from	$125 (Frontier)
Popular in	June
Cheapest in	October
Average price	$397
Good round-trip deal	$319 or less
Good one-way deal	$179 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-San Antonio flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Antonio flights.

Search Deals

From Washington, D.C. (WAS) to San Antonio

Search Deals

One-way flight from Washington, D.C. (WAS) to San Antonio

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Antonio.

Search Deals

Price to beat on a one-way flight from Washington, D.C. (WAS) to San Antonio.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Antonio

IAD Washington, D.C. Dulles Intl - SAT San Antonio

IADSAT

Washington, D.C. Dulles Intl

Fri 11/13

10:11 am-5:25 pm

1 stop8h 14m

San Antonio

Sat 11/14

2:00 pm-8:10 pm

1 stop5h 10m

$314

Washington, D.C.San Antonio

IAD Washington, D.C. Dulles Intl - SAT San Antonio

IADSAT

Washington, D.C. Dulles Intl

Fri 10/30

5:29 pm-11:07 pm

1 stop6h 38m

San Antonio

Tue 11/3

6:50 am-2:09 pm

1 stop6h 19m

$314

Quickest round-trip

BaltimoreSan Antonio

BWI Baltimore/Washington - SAT San Antonio

BWISAT

Baltimore/Washington

Thu 10/29

8:25 am-11:00 am

Nonstop3h 35m

San Antonio

Mon 11/2

5:15 am-9:25 am

Nonstop3h 10m

$317

Washington, D.C.San Antonio

DCA Washington, D.C. Reagan-National - SAT San Antonio

DCASAT

Washington, D.C. Reagan-National

Fri 9/18

6:00 am-1:40 pm

1 stop8h 40m

San Antonio

Wed 9/23

2:50 pm-11:05 pm

1 stop7h 15m

$319

Washington, D.C.San Antonio

IAD Washington, D.C. Dulles Intl - SAT San Antonio

IADSAT

Washington, D.C. Dulles Intl

Thu 11/5

6:12 pm-11:26 pm

1 stop6h 14m

San Antonio

Sun 11/8

6:20 pm-12:42 am

1 stop5h 22m

$324

Washington, D.C.San Antonio

IAD Washington, D.C. Dulles Intl - SAT San Antonio

IADSAT

Washington, D.C. Dulles Intl

Fri 10/30

10:57 am-4:13 pm

1 stop6h 16m

San Antonio

Mon 11/2

5:00 pm-12:42 am

1 stop6h 42m

$324

BaltimoreSan Antonio

BWI Baltimore/Washington - SAT San Antonio

BWISAT

Baltimore/Washington

Sat 10/24

5:36 pm-10:20 pm

1 stop5h 44m

San Antonio

Tue 11/3

5:00 pm-12:31 am

1 stop6h 31m

$327

BaltimoreSan Antonio

BWI Baltimore/Washington - SAT San Antonio

BWISAT

Baltimore/Washington

Thu 9/17

6:10 am-10:39 am

1 stop5h 29m

San Antonio

Tue 9/22

2:30 pm-9:30 pm

1 stop6h 00m

$327

Washington, D.C.San Antonio

IAD Washington, D.C. Dulles Intl - SAT San Antonio

IADSAT

Washington, D.C. Dulles Intl

Fri 9/25

6:10 am-12:11 pm

1 stop7h 01m

San Antonio

Sun 9/27

7:00 am-11:20 am

Nonstop3h 20m

$329

BaltimoreSan Antonio

BWI Baltimore/Washington - SAT San Antonio

BWISAT

Baltimore/Washington

Thu 11/12

6:10 am-3:38 pm

2 stops10h 28m

San Antonio

Mon 11/16

5:30 am-11:36 am

1 stop5h 06m

$332

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/25

Showing 1-10 of 56 resultsSorted by cheapest first

...

Compare providers for flights from Washington, D.C. to San Antonio

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to San Antonio in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy1 star	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star

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

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Washington, D.C. with our price prediction graph.

WAS-SAT

BWI-SAT

IAD-SAT

DCA-SAT

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 Washington, D.C. to San Antonio

WAS-SAT

BWI-SAT

IAD-SAT

DCA-SAT

What is the cheapest month to book a flight from Washington, D.C. to San Antonio?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $342). Flying from Washington, D.C. to San Antonio in May is currently the most expensive (average of $451). 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 WAS to SAT?

It’s typically best to fly out from Washington, D.C. to San Antonio in the morning. Doing so could potentially save you 6% on the flight price compared to flying in the evening, which is usually more expensive.

Weekly flight availability from Washington, D.C. to San Antonio

The most flights from WAS to SAT are scheduled on a Tuesday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Washington, D.C. to San Antonio?

Airfare is below average for this route at the moment.

Washington, D.C. to San Antonio flights typically cost between $314 and $487 in September.
The cheapest round-trip price found within the last 5 days was $238 on Frontier (Sep 24-Sep 28).

What’s the top layover airport for flights from Washington, D.C. to San Antonio?

Dallas (DAL) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to San Antonio?

Dallas (DAL) is the most affordable 1-stop option, with an average round-trip price of $395.

What’s the fastest layover option from Washington, D.C. to San Antonio?

Flights via Dallas (DAL) have the shortest average one-way travel time for 1-stop routes: 5h 33m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to San Antonio?

Flights via Dallas (DAL) offer the fastest connection on this route, with an average layover time of 0h 48m.

How far ahead should I book a flight from Washington, D.C. to San Antonio?

The price you pay for your flight from Washington, D.C. to San Antonio may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Washington, D.C. to San Antonio?

Travelers seeking maximum savings on their Washington, D.C. to San Antonio flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Washington, D.C. to San Antonio flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Antonio trip

Our travel experts

Ramsey Qubein

Expert on SAT and IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. to San Antonio. 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

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,204 reviews

Southwest

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

7.8

Good

8,529 reviews

Southwest

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

10,124 reviews

Southwest

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.1

Good

11,995 reviews

Southwest

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Frontier

5.6

Fair

2,647 reviews

Southwest

8.0

Very good

4,204 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

What airport do you fly into for flights to San Antonio from Washington, D.C.?
If you book a flight to San Antonio from Washington, D.C., you will be flying to San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 6 flights from Washington, D.C. to San Antonio per day from 6 different airlines.
How long is the flight from Washington, D.C. to San Antonio?
Departing from Washington, D.C. to San Antonio will take you 3h 35m. There are 1405 mi between Washington, D.C. and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Washington, D.C. to San Antonio round-trip?
According to our current data, Frontier ($132), American Airlines ($249), and United Airlines ($249) offers the cheapest pricing from Washington, D.C. to San Antonio. You may be able to fly from Washington, D.C. to San Antonio for 65% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Washington, D.C. to San Antonio one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $72. Delta flights start at $144 while deals on United Airlines start at $145 one-way.
What are the most popular routes from Washington, D.C. to San Antonio?
The most popular flight routes from Washington, D.C. to San Antonio are Washington, D.C. Dulles Intl - San Antonio, Washington, D.C. Reagan-National - San Antonio and Baltimore/Washington - San Antonio.
What are the most reliable airlines from Washington, D.C. to San Antonio?
The top 3 most reliable airlines when flying from Washington, D.C. to San Antonio are Mesa Airlines (100%), United Airlines (92%) and Air Canada (81%).
What are the cheapest flights from Washington, D.C. to San Antonio?
Looking at all options, your cheapest flight can be booked for $193. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $259 on average, our data indicates $394 when flying from Washington, D.C. to San Antonio.
Can I find deals for flights from Washington, D.C. to San Antonio that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to San Antonio.
Can I find deals for business class flights from Washington, D.C. to San Antonio?
Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to San Antonio?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $342). Flying from Washington, D.C. to San Antonio in May is currently the most expensive (average of $451). 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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Top 6 airlines flying from Washington, D.C. to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$132	Average$272	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$246	Average$377	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$249	Average$416	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$249	Average$399	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$264	Average$429	FlexibilityNo cancel fee	On-time63%
JetBlue	Cheapest$381	Average$455	FlexibilityNo cancel fee	On-time62%

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$125+ Cheap flights from Washington, D.C. (WAS) to San Antonio (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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington, D.C. to San Antonio

Cheapest flights from Washington, D.C. to San AntonioExplore the most affordable flight options available from Washington, D.C. to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Explore the most affordable flight options available from Washington, D.C. to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Best flights from Washington, D.C. to San AntonioDiscover carefully curated flight deals from Washington, D.C. to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Discover carefully curated flight deals from Washington, D.C. to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Last-minute flights from Washington, D.C. to San AntonioDiscover last-minute flight deals from Washington, D.C. to San Antonio. Data last updated August 26, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to San Antonio. Data last updated August 26, 2026 and is based on user searches.

One-way flights from Washington, D.C. to San AntonioSearch for one-way flight options from Washington, D.C. to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Search for one-way flight options from Washington, D.C. to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

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Use the filters below to find and compare flights from Washington, D.C. to San Antonio that are best for you.

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to San Antonio in August.

Best time to book a flight from Washington, D.C. to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Washington, D.C. with our price prediction graph.

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What is the cheapest month to book a flight from Washington, D.C. to San Antonio?

What is the cheapest time of day to fly from WAS to SAT?

Find hourly flight availability from Washington, D.C. 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 August 26, 2026.

It’s typically best to fly out from Washington, D.C. to San Antonio in the morning. Doing so could potentially save you 6% on the flight price compared to flying in the evening, which is usually more expensive.

Weekly flight availability from Washington, D.C. to San Antonio

The most flights from WAS to SAT are scheduled on a Tuesday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Washington, D.C. to San Antonio?

Airfare is below average for this route at the moment.

Washington, D.C. to San Antonio flights typically cost between $314 and $487 in September.The cheapest round-trip price found within the last 5 days was $238 on Frontier (Sep 24-Sep 28).

What’s the top layover airport for flights from Washington, D.C. to San Antonio?

Share of 1-stop round-trip flights from Washington, D.C. to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.

Dallas (DAL) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to San Antonio?

Average round-trip fare for 1-stop flights from Washington, D.C. to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Dallas (DAL) is the most affordable 1-stop option, with an average round-trip price of $395.

What’s the fastest layover option from Washington, D.C. to San Antonio?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dallas (DAL) have the shortest average one-way travel time for 1-stop routes: 5h 33m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to San Antonio?

Average layover duration for 1-stop one-way flights from Washington, D.C. to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Dallas (DAL) offer the fastest connection on this route, with an average layover time of 0h 48m.

How far ahead should I book a flight from Washington, D.C. to San Antonio?

The price you pay for your flight from Washington, D.C. to San Antonio may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Washington, D.C. to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to San Antonio. Price data was last updated on August 22, 2026.

Travelers seeking maximum savings on their Washington, D.C. to San Antonio flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Washington, D.C. to San Antonio flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Antonio trip

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Reviews of airlines servicing San Antonio

Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. to San Antonio. 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.

Related info for your journey

What airport do you fly into for flights to San Antonio from Washington, D.C.?

How long is the flight from Washington, D.C. to San Antonio?

What are the cheapest airlines flying from Washington, D.C. to San Antonio round-trip?

What are the cheapest airlines to fly from Washington, D.C. to San Antonio one-way?

What are the most popular routes from Washington, D.C. to San Antonio?

What are the most reliable airlines from Washington, D.C. to San Antonio?

What are the cheapest flights from Washington, D.C. to San Antonio?

Can I find deals for flights from Washington, D.C. to San Antonio that include hotel bookings?

How can I find direct flights from Washington, D.C. to San Antonio?

Can I find deals for business class flights from Washington, D.C. to San Antonio?

What is the cheapest month to book a flight from Washington, D.C. to San Antonio?

Traveling to a place near San Antonio?

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Cheapest flights from Washington, D.C. to San Antonio
Explore the most affordable flight options available from Washington, D.C. to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Best flights from Washington, D.C. to San Antonio
Discover carefully curated flight deals from Washington, D.C. to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Last-minute flights from Washington, D.C. to San Antonio
Discover last-minute flight deals from Washington, D.C. to San Antonio. Data last updated August 26, 2026 and is based on user searches.

One-way flights from Washington, D.C. to San Antonio
Search for one-way flight options from Washington, D.C. to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Washington, D.C. to San Antonio flights typically cost between $314 and $487 in September.
The cheapest round-trip price found within the last 5 days was $238 on Frontier (Sep 24-Sep 28).