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

Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to San Antonio round-trip from $237. Other airlines that can offer you cheap pricing are Frontier, from $240, and United Airlines, from $244. You may be able to fly from Washington, D.C. Dulles Intl Airport to San Antonio for 40% less than the average price by searching for these airlines.

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

One-way options have recently been found by users for as low as $89 on Frontier. Other airlines that offer cheap prices include United Airlines from $90 and Southwest from $100 one-way.

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

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

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

Looking at all options, your cheapest flight can be booked for $124. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $215 on average our data indicates $482 when flying from Washington, D.C. Dulles Intl Airport to San Antonio.

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

Consider Mesa Airlines (86%), United Airlines (84%) or Air Canada (83%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to San Antonio.

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

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to San Antonio.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to San Antonio?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 32%.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to San Antonio?

August can be a great time to fly to San Antonio from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $386. Cheapflights users have found deals in the month of August for as cheap as $237. The most expensive prices can be found in the month of December.

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-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. Dulles Intl Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Antonio flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-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 Washington, D.C. Dulles Intl Airport-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. Dulles Intl?

San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to San Antonio. 3 airlines have flights to San Antonio from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to San Antonio should not be difficult; the airport handles an average of 3 inbound flights from Washington, D.C. Dulles Intl per day.

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

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

How can I find direct flights from Dulles Intl to San Antonio?

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

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

Yes. Cheapflights offers flight deals from Dulles Intl 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.

$89+ Flights from Washington, D.C. Dulles Intl Airport to San Antonio - Compare & Save Big

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Dulles Intl 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 Washington, D.C. Dulles Intl to San Antonio are usually found in August or January, booked 57 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Dulles Intl to San Antonio

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$237 (Delta)
One-way from	$89 (Frontier)
Popular in	March
Cheapest in	August
Average price	$408
Good round-trip deal	$310 or less
Good one-way deal	$129 or less

Provider with most accurate pricing for Washington, D.C. Dulles Intl-San Antonio flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San Antonio flights.

Search Deals

From Washington, D.C. Dulles Intl to San Antonio

Search Deals

One-way flight from Washington, D.C. Dulles Intl to San Antonio

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($21 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 May 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to San Antonio.

Search Deals

Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San Antonio.

Search Deals

Find flight deals from Dulles Intl to San Antonio

Cheapest flights from Dulles Intl to San Antonio
Explore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Sat 5/241:20 pmIAD - SAT

1 stop8h 06mDelta

Fri 5/304:35 pmSAT - IAD

1 stop5h 19mDelta

Deal found 4/29

$237

Sat 8/95:25 pmIAD - SAT

1 stop7h 34mUnited Airlines

Tue 8/127:00 amSAT - IAD

Nonstop3h 24mUnited Airlines

Deal found 4/28

$239

Fri 5/235:15 amIAD - SAT

1 stop7h 27mFrontier

Sat 5/312:18 pmSAT - IAD

1 stop14h 37mFrontier

Deal found 4/29

$240

Thu 5/2911:54 amIAD - SAT

1 stop6h 14mMultiple Airlines

Wed 6/47:05 amSAT - IAD

2 stops26h 57mMultiple Airlines

Deal found 4/30

$262

Sat 5/175:05 amIAD - SAT

1 stop7h 00mSouthwest

Tue 5/206:05 amSAT - IAD

1 stop7h 00mSouthwest

Deal found 4/29

$269

Fri 5/305:07 pmIAD - SAT

1 stop5h 56mAmerican Airlines

Sat 6/72:42 pmSAT - IAD

2 stops8h 17mAmerican Airlines

Deal found 4/30

$335

Best flights from Dulles Intl to San Antonio
Discover carefully curated flight deals from Dulles Intl to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Sat 5/246:00 pmIAD - SAT

1 stop7h 19mDelta

Sun 5/255:20 amSAT - IAD

1 stop5h 21mDelta

Deal found 4/30

$237

Wed 5/285:15 amIAD - SAT

1 stop7h 27mFrontier

Sun 6/12:09 pmSAT - IAD

1 stop14h 49mFrontier

Deal found 4/30

$240

Fri 5/305:50 pmIAD - SAT

Nonstop3h 32mUnited Airlines

Thu 6/511:56 amSAT - IAD

Nonstop3h 22mUnited Airlines

Deal found 4/29

$244

Thu 5/2911:54 amIAD - SAT

1 stop6h 14mMultiple Airlines

Wed 6/47:05 amSAT - IAD

2 stops26h 57mMultiple Airlines

Deal found 4/30

$262

Thu 5/292:10 pmIAD - SAT

1 stop9h 35mSouthwest

Mon 6/212:15 pmSAT - IAD

2 stops9h 25mSouthwest

Deal found 4/30

$313

Fri 5/305:07 pmIAD - SAT

1 stop5h 56mAmerican Airlines

Sat 6/72:42 pmSAT - IAD

2 stops8h 17mAmerican Airlines

Deal found 4/30

$335

Last-minute flights from Dulles Intl to San Antonio
Discover last-minute flight deals from Dulles Intl to San Antonio. Data last updated May 1, 2025 and is based on user searches.

Tue 5/67:50 amIAD - SAT

2 stops10h 55mSouthwest

Tue 5/136:05 amSAT - IAD

1 stop7h 00mSouthwest

Deal found 4/29

$339

Thu 5/85:26 pmIAD - SAT

1 stop27h 05mFrontier

Fri 5/161:43 pmSAT - IAD

1 stop15h 48mFrontier

Deal found 4/30

$268

Thu 5/87:05 amIAD - SAT

1 stop6h 20mDelta

Mon 5/121:46 pmSAT - IAD

1 stop8h 48mDelta

Deal found 4/29

$334

Thu 5/812:50 pmIAD - SAT

Nonstop3h 52mUnited Airlines

Mon 5/1212:10 pmSAT - IAD

Nonstop3h 19mUnited Airlines

Deal found 4/29

$359

Thu 5/85:02 amIAD - SAT

2 stops9h 15mAmerican Airlines

Mon 5/126:05 pmSAT - IAD

1 stop4h 57mAmerican Airlines

Deal found 4/29

$384

Thu 5/86:30 amIAD - SAT

2 stops15h 04mAlaska Airlines

Sun 5/116:35 amSAT - IAD

1 stop10h 38mAlaska Airlines

Deal found 4/30

$1,954

Fri 5/99:42 pmIAD - SAT

3 stops32h 22mMultiple Airlines

Wed 5/147:05 amSAT - IAD

3 stops27h 21mMultiple Airlines

Deal found 4/30

$360

Sat 5/175:05 amIAD - SAT

1 stop7h 00mSouthwest

Tue 5/206:05 amSAT - IAD

1 stop7h 00mSouthwest

Deal found 4/29

$269

Fri 5/235:15 amIAD - SAT

1 stop7h 27mFrontier

Sat 5/312:18 pmSAT - IAD

1 stop14h 37mFrontier

Deal found 4/29

$240

Sat 5/241:20 pmIAD - SAT

1 stop8h 06mDelta

Fri 5/304:35 pmSAT - IAD

1 stop5h 19mDelta

Deal found 4/29

$237

Thu 5/2911:54 amIAD - SAT

1 stop6h 14mMultiple Airlines

Wed 6/47:05 amSAT - IAD

2 stops26h 57mMultiple Airlines

Deal found 4/30

$262

Fri 5/305:50 pmIAD - SAT

Nonstop3h 32mUnited Airlines

Fri 6/67:15 amSAT - IAD

Nonstop3h 21mUnited Airlines

Deal found 4/30

$244

One-way flights from Dulles Intl to San Antonio
Search for one-way flight options from Dulles Intl to San Antonio. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Wed 6/45:15 amIAD - SAT

1 stop7h 14mFrontier

Deal found 5/1

$89

Sat 5/318:30 amIAD - SAT

Nonstop3h 30mUnited Airlines

Deal found 4/30

$90

Thu 5/292:10 pmIAD - SAT

1 stop9h 35mSouthwest

Deal found 4/30

$100

Sat 6/79:43 pmIAD - SAT

1 stop20h 25mMultiple Airlines

Deal found 4/30

$108

Sat 5/243:37 pmIAD - SAT

1 stop7h 19mDelta

Deal found 4/30

$119

Sat 5/249:11 amIAD - SAT

2 stops9h 41mAmerican Airlines

Deal found 4/30

$205

Tue 6/107:15 amIAD - SAT

2 stops22h 55mAlaska Airlines

Deal found 4/30

$242

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 5/24

1:20 pm-8:26 pm

1 stop8h 06m

San Antonio

Fri 5/30

4:35 pm-10:54 pm

1 stop5h 19m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 5/23

5:15 am-11:42 am

1 stop7h 27m

San Antonio

Fri 5/30

12:27 pm-11:32 pm

1 stop10h 05m

$240

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 6/4

5:50 pm-8:22 pm

Nonstop3h 32m

San Antonio

Wed 6/18

5:30 am-1:57 pm

1 stop7h 27m

$241

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Thu 5/29

11:54 am-5:08 pm

1 stop6h 14m

San Antonio

Wed 6/4

7:05 am-11:02 am

2 stops26h 57m

$262

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 5/17

5:05 am-11:05 am

1 stop7h 00m

San Antonio

Tue 5/20

6:05 am-2:05 pm

1 stop7h 00m

$269

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 5/30

5:07 pm-10:03 pm

1 stop5h 56m

San Antonio

Sat 6/7

2:42 pm-11:59 pm

2 stops8h 17m

$335

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Mon 6/9

5:50 am-4:43 pm

1 stop11h 53m

$95

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 5/31

5:05 am-11:05 am

1 stop7h 00m

$100

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 6/28

9:42 pm-5:18 pm

1 stop20h 36m

$108

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 6/21

8:30 am-11:00 am

Nonstop3h 30m

$116

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 14 results

Compare providers for flights from Dulles Intl to San Antonio

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl 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
Priceline	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-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. Dulles Intl Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Antonio flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-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 Washington, D.C. Dulles Intl Airport-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 Dulles Intl to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to San Antonio

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

The best time to book flights from Washington, D.C. Dulles Intl Airport to San Antonio is 57 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 Washington, D.C. Dulles Intl Airport to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Antonio (average of $295). Flying from Washington, D.C. Dulles Intl Airport 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 IAD to SAT?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 29% on flights from Washington, D.C. Dulles Intl Airport to San Antonio by exploring options for tickets at noon.

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 Washington, D.C. to San Antonio to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,972 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

9,972 reviews

Alaska Airlines

8.0

Very good

9,972 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

4,294 reviews

Alaska Airlines

8.0

Very good

9,972 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

7,934 reviews

Alaska Airlines

8.0

Very good

9,972 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

8,696 reviews

Alaska Airlines

8.0

Very good

9,972 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

9,972 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 airport do you fly into for flights to San Antonio from Washington, D.C. Dulles Intl?
San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to San Antonio. 3 airlines have flights to San Antonio from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to San Antonio should not be difficult; the airport handles an average of 3 inbound flights from Washington, D.C. Dulles Intl per day.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San Antonio round-trip?
Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to San Antonio round-trip from $237. Other airlines that can offer you cheap pricing are Frontier, from $240, and United Airlines, from $244. You may be able to fly from Washington, D.C. Dulles Intl Airport to San Antonio for 40% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San Antonio one-way?
One-way options have recently been found by users for as low as $89 on Frontier. Other airlines that offer cheap prices include United Airlines from $90 and Southwest from $100 one-way.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to San Antonio?
Consider Mesa Airlines (86%), United Airlines (84%) or Air Canada (83%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to San Antonio.
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to San Antonio?
Looking at all options, your cheapest flight can be booked for $124. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $215 on average our data indicates $482 when flying from Washington, D.C. Dulles Intl Airport to San Antonio.
Can I find deals for flights from Dulles Intl to San Antonio that include hotel bookings?
Yes. In addition to deals on Dulles Intl to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Antonio.
Can I find deals for business class flights from Dulles Intl to San Antonio?
Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to San Antonio?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Antonio (average of $295). Flying from Washington, D.C. Dulles Intl Airport 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

New Braunfels

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to San Antonio

Baltimore to Dallas/Fort Worth flights

Dulles Intl to Dallas/Fort Worth flights

Reagan-National to Dallas/Fort Worth flights

Baltimore to Hobby flights

Reagan-National to Hobby flights

Dulles Intl to Hobby flights

Dulles Intl to George Bush Intcntl flights

Baltimore to George Bush Intcntl flights

Dulles Intl to Austin flights

Reagan-National to George Bush Intcntl flights

Baltimore to Austin flights

Dulles Intl to Love Field flights

Baltimore to Love Field flights

Reagan-National to Austin flights

Reagan-National to Love Field flights

Baltimore to San Antonio flights

Reagan-National to San Antonio flights

Dulles Intl to El Paso flights

Reagan-National to El Paso flights

Baltimore to El Paso flights

Dulles Intl to Corpus Christi flights

Dulles Intl to McAllen flights

Dulles Intl to Midland flights

Reagan-National to Midland flights

Baltimore to Corpus Christi flights

Reagan-National to Corpus Christi flights

Reagan-National to McAllen flights

Dulles Intl to Lubbock flights

Baltimore to McAllen flights

Baltimore to Brownsville flights

Dulles Intl to Killeen flights

Reagan-National to Brownsville flights

Baltimore to Lubbock flights

Dulles Intl to Waco flights

Dulles Intl to Brownsville flights

Baltimore to Killeen flights

Reagan-National to Killeen flights

Dulles Intl to San Angelo flights

Baltimore to Tyler flights

Reagan-National to Harlingen flights

Baltimore to Waco flights

Reagan-National to Waco flights

Dulles Intl to Amarillo flights

Baltimore to Laredo flights

Baltimore to Harlingen flights

Dulles Intl to Harlingen flights

Reagan-National to Lubbock flights

Reagan-National to San Angelo flights

Reagan-National to Amarillo flights

Other flights to San Antonio

Top 3 airlines flying from Dulles Intl to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$218	Average$317	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$244	Average$344	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$249	Average$422	FlexibilityNo cancel fee	On-time69%

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.

$89+ Cheap flights from Dulles Intl (IAD) 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to San Antonio with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Antonio are usually found in August or January, booked 57 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Dulles Intl to San Antonio

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to San Antonio

Cheapest flights from Dulles Intl to San AntonioExplore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Dulles Intl 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 Dulles Intl to San Antonio in May.

Best time to book a flight from Dulles Intl to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to San Antonio

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

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

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

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

Find hourly flight availability from Dulles Intl 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 1, 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 Washington, D.C. to San Antonio to help guide your decision. Users have also rated airlines 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 Dulles Intl 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 airport do you fly into for flights to San Antonio from Washington, D.C. Dulles Intl?

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

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

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

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

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

How can I find direct flights from Dulles Intl to San Antonio?

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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 Dulles Intl to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Dulles Intl to San Antonio

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to San Antonio
Explore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.