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

For as low as $237, Southwest can have you in Washington, D.C. Dulles Intl Airport from San Antonio in 5h 15m. Airlines will cover a distance of 1360 mi. This flight may include one or multiple stops.

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

Currently priced at $204, Southwest will fly you from San Antonio to Washington, D.C. Dulles Intl Airport and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $218 and $237, respectively. Users have found that Southwest is 46% cheaper than the other options available to this destination.

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

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

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

The most flights from SAT to IAD are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

While on average a flight from San Antonio to Washington, D.C. Dulles Intl Airport is generally $947, our data shows the cheapest flight currently is $138. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $212 for that flight.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Antonio to Washington, D.C. Dulles Intl Airport on time: Air Canada (91%), Lufthansa (91%), United Airlines (89%).

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

The most popular airlines flying from San Antonio to Washington, D.C. Dulles Intl Airport are American Airlines, Delta and United Airlines. Something to consider prior to booking your flight.

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

Travelers have found that booking a Thursday departure is the best way to save up to 76% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

June is one of the best times of the year to fly to Washington, D.C. Dulles Intl Airport from San Antonio. Prices for June average $330 per person but you can even find prices for as low as $110. The most expensive prices can be found in the month of November. Opting for a June flight can save you 20% on your journey compared to booking in November

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

For a flight from San Antonio to Washington, D.C. Dulles Intl, you will be flying from San Antonio. San Antonio (SAT) is just 7.6 mi from the center of the city. San Antonio is the only San Antonio airport and it handles 6 outbound flights to Washington, D.C. Dulles Intl per day. 4 airlines have flights to Washington, D.C. Dulles Intl from San Antonio on a regular basis.

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

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

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

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

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

Yes. Cheapflights offers flight deals from San Antonio to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$71+ Cheap Flights from San Antonio to Washington, D.C. Dulles Intl Airport

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Cheapflights Tip: The best prices from San Antonio to Washington, D.C. Dulles Intl are usually found in February or July, booked 87 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from San Antonio to Dulles Intl

Round-trip from	$214 (Southwest)
One-way from	$71 (Kiwi.com)
Popular in	March
Cheapest in	February
Average price	$407
Good round-trip deal	$372 or less
Good one-way deal	$253 or less

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

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

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High demand for flights, 3% potential price rise

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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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

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

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Find flight deals from San Antonio to Dulles Intl

Cheapest flights from San Antonio to Dulles Intl
Explore the most affordable flight options available from San Antonio to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

vie. 9/196:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/10

$200

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

lun. 10/66:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/11

$204

vie. 9/125:40 pmSAT - IAD

1 stop5h 35mFrontier

lun. 9/156:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/8

$206

vie. 9/125:40 pmSAT - IAD

1 stop5h 35mFrontier

vie. 10/36:10 amIAD - SAT

1 stop11h 25mFrontier

Deal found 9/11

$214

vie. 10/107:10 pmSAT - IAD

1 stop24h 43mFrontier

lun. 10/136:04 amIAD - SAT

1 stop11h 46mFrontier

Deal found 9/10

$218

jue. 10/211:33 amSAT - IAD

1 stop11h 06mFrontier

dom. 10/510:09 pmIAD - SAT

2 stops19h 21mFrontier

Deal found 9/10

$219

mar. 11/183:05 pmSAT - IAD

1 stop6h 05mSouthwest

dom. 11/235:05 amIAD - SAT

1 stop13h 20mSouthwest

Deal found 9/8

$220

mié. 10/87:00 amSAT - IAD

2 stops28h 22mMultiple Airlines

dom. 10/126:15 amIAD - SAT

1 stop11h 37mMultiple Airlines

Deal found 9/9

$223

sáb. 11/16:05 pmSAT - IAD

1 stop25h 46mFrontier

lun. 11/36:00 amIAD - SAT

1 stop11h 40mFrontier

Deal found 9/11

$225

jue. 10/211:33 amSAT - IAD

1 stop11h 06mFrontier

lun. 10/66:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/9

$226

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

lun. 10/136:04 amIAD - SAT

1 stop11h 46mFrontier

Deal found 9/11

$229

jue. 9/2511:33 amSAT - IAD

1 stop11h 42mFrontier

lun. 9/296:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/9

$231

Best flights from San Antonio to Dulles Intl
Discover carefully curated flight deals from San Antonio to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated septiembre 11, 2025.

mié. 11/195:35 amSAT - IAD

1 stop9h 10mSouthwest

dom. 11/235:05 amIAD - SAT

1 stop6h 55mSouthwest

Deal found 9/10

$214

jue. 11/612:23 pmSAT - IAD

1 stop5h 15mDelta

mar. 11/1111:05 amIAD - SAT

1 stop5h 57mDelta

Deal found 9/10

$237

mié. 10/811:55 amSAT - IAD

Nonstop3h 21mUnited Airlines

dom. 10/128:25 amIAD - SAT

Nonstop3h 33mUnited Airlines

Deal found 9/9

$249

sáb. 10/46:24 amSAT - IAD

1 stop6h 06mDelta

lun. 10/67:35 pmIAD - SAT

1 stop5h 45mDelta

Deal found 9/10

$237

sáb. 1/1012:15 pmSAT - IAD

Nonstop3h 09mUnited Airlines

dom. 1/186:03 amIAD - SAT

1 stop5h 44mUnited Airlines

Deal found 9/11

$252

mié. 10/15:10 amSAT - IAD

1 stop5h 18mDelta

dom. 10/57:20 amIAD - SAT

1 stop4h 59mDelta

Deal found 9/10

$242

mié. 10/222:25 pmSAT - IAD

1 stop5h 35mUnited Airlines

sáb. 10/256:30 amIAD - SAT

1 stop6h 28mUnited Airlines

Deal found 9/10

$255

vie. 10/36:11 pmSAT - IAD

1 stop5h 02mDelta

dom. 10/56:00 amIAD - SAT

1 stop6h 19mDelta

Deal found 9/9

$242

mar. 10/75:56 pmSAT - IAD

1 stop4h 55mUnited Airlines

dom. 10/128:25 amIAD - SAT

Nonstop3h 33mUnited Airlines

Deal found 9/9

$259

vie. 10/312:50 pmSAT - IAD

1 stop8h 43mUnited Airlines

dom. 10/58:25 amIAD - SAT

Nonstop3h 33mUnited Airlines

Deal found 9/10

$259

Last-minute flights from San Antonio to Dulles Intl
Discover last-minute flight deals from San Antonio to Dulles Intl. Data last updated septiembre 11, 2025 and is based on user searches.

vie. 9/125:40 pmSAT - IAD

1 stop5h 35mFrontier

vie. 10/36:10 amIAD - SAT

1 stop11h 25mFrontier

Deal found 9/11

$214

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

vie. 9/196:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/10

$200

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

lun. 10/66:10 amIAD - SAT

1 stop11h 20mFrontier

Deal found 9/11

$204

lun. 9/155:40 pmSAT - IAD

1 stop5h 35mFrontier

lun. 10/136:04 amIAD - SAT

1 stop11h 46mFrontier

Deal found 9/11

$229

jue. 9/1811:33 amSAT - IAD

1 stop11h 42mFrontier

dom. 9/2110:09 pmIAD - SAT

2 stops19h 21mFrontier

Deal found 9/11

$235

mié. 10/14:31 pmSAT - IAD

1 stop5h 35mDelta

lun. 10/67:35 pmIAD - SAT

1 stop5h 45mDelta

Deal found 9/10

$237

jue. 10/211:33 amSAT - IAD

1 stop11h 06mFrontier

dom. 10/510:09 pmIAD - SAT

2 stops19h 21mFrontier

Deal found 9/10

$219

mar. 10/77:00 amSAT - IAD

2 stops35h 46mMultiple Airlines

dom. 10/126:15 amIAD - SAT

1 stop11h 37mMultiple Airlines

Deal found 9/9

$239

mié. 10/87:00 amSAT - IAD

2 stops28h 22mMultiple Airlines

dom. 10/126:15 amIAD - SAT

1 stop11h 37mMultiple Airlines

Deal found 9/9

$223

vie. 10/107:10 pmSAT - IAD

1 stop24h 43mFrontier

lun. 10/136:04 amIAD - SAT

1 stop11h 46mFrontier

Deal found 9/10

$218

jue. 10/168:26 pmSAT - IAD

2 stops18h 13mFrontier

dom. 10/196:15 amIAD - SAT

1 stop11h 37mFrontier

Deal found 9/10

$234

One-way flights from San Antonio to Dulles Intl
Search for one-way flight options from San Antonio to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated septiembre 11, 2025.

lun. 11/35:35 pmSAT - IAD

1 stop5h 36mFrontier

Deal found 9/9

$71

vie. 11/75:35 pmSAT - IAD

1 stop5h 36mFrontier

Deal found 9/9

$73

vie. 10/247:10 pmSAT - IAD

1 stop24h 43mFrontier

Deal found 9/10

$78

mar. 10/285:45 amSAT - IAD

1 stop9h 15mSouthwest

Deal found 9/11

$80

vie. 9/195:40 pmSAT - IAD

1 stop5h 35mFrontier

Deal found 9/10

$86

mié. 11/53:05 pmSAT - IAD

1 stop6h 05mSouthwest

Deal found 9/11

$87

sáb. 11/156:25 amSAT - IAD

1 stop7h 50mSouthwest

Deal found 9/11

$91

mié. 1/1412:25 pmSAT - IAD

2 stops8h 30mSouthwest

Deal found 9/9

$92

vie. 10/107:10 pmSAT - IAD

1 stop24h 43mFrontier

Deal found 9/9

$93

sáb. 1/106:25 amSAT - IAD

1 stop7h 30mSouthwest

Deal found 9/11

$99

jue. 10/305:25 amSAT - IAD

1 stop6h 35mSouthwest

Deal found 9/11

$102

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mié. 11/19

5:35 am-3:45 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

dom. 11/23

5:05 am-11:00 am

1 stop6h 55m

$214

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

jue. 11/6

12:23 pm-6:38 pm

1 stop5h 15m

Washington, D.C. Dulles Intl

mar. 11/11

11:05 am-4:02 pm

1 stop5h 57m

$237

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

sáb. 10/4

6:24 am-1:30 pm

1 stop6h 06m

Washington, D.C. Dulles Intl

lun. 10/6

7:35 pm-12:20 am

1 stop5h 45m

$237

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mié. 10/1

5:10 am-11:28 am

1 stop5h 18m

Washington, D.C. Dulles Intl

dom. 10/5

7:20 am-11:19 am

1 stop4h 59m

$242

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

vie. 10/3

6:11 pm-12:13 am

1 stop5h 02m

Washington, D.C. Dulles Intl

dom. 10/5

6:00 am-11:19 am

1 stop6h 19m

$242

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mié. 10/8

11:55 am-4:16 pm

Nonstop3h 21m

Washington, D.C. Dulles Intl

dom. 10/12

8:25 am-10:58 am

Nonstop3h 33m

$249

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

sáb. 1/10

12:15 pm-4:24 pm

Nonstop3h 09m

Washington, D.C. Dulles Intl

dom. 1/18

6:03 am-10:47 am

1 stop5h 44m

$252

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mié. 10/22

2:25 pm-9:00 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

sáb. 10/25

6:30 am-11:58 am

1 stop6h 28m

$255

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mar. 10/7

5:56 pm-11:51 pm

1 stop4h 55m

Washington, D.C. Dulles Intl

dom. 10/12

8:25 am-10:58 am

Nonstop3h 33m

$259

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

vie. 10/3

12:50 pm-10:33 pm

1 stop8h 43m

Washington, D.C. Dulles Intl

dom. 10/5

8:25 am-10:58 am

Nonstop3h 33m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 22 results

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

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

Airports

SAT

For longer trips, economy lots with shuttle service offer better value than the new parking garage at SAT.

IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cheap way to get to the airport.

Our travel experts

Ramsey Qubein

Expert on SAT and IAD

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

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

Prices

Airlines

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

The best time to book flights from San Antonio to Washington, D.C. Dulles Intl Airport is 87 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 San Antonio to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San Antonio to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 SAT to IAD?

One of the essential ways to save on airfare from San Antonio to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 71% on airfare.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from San Antonio to Washington, D.C. Dulles Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,248 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

4,248 reviews

Southwest

8.0

Very good

4,248 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

8.0

Very good

7,960 reviews

Southwest

8.0

Very good

4,248 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

8,937 reviews

Southwest

8.0

Very good

4,248 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

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,248 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 from for flights from San Antonio to Washington, D.C. Dulles Intl?
For a flight from San Antonio to Washington, D.C. Dulles Intl, you will be flying from San Antonio. San Antonio (SAT) is just 7.6 mi from the center of the city. San Antonio is the only San Antonio airport and it handles 6 outbound flights to Washington, D.C. Dulles Intl per day. 4 airlines have flights to Washington, D.C. Dulles Intl from San Antonio on a regular basis.
How long is the flight from San Antonio to Washington, D.C. Dulles Intl Airport?
For as low as $237, Southwest can have you in Washington, D.C. Dulles Intl Airport from San Antonio in 5h 15m. Airlines will cover a distance of 1360 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Antonio to Washington, D.C. Dulles Intl Airport round-trip?
Currently priced at $204, Southwest will fly you from San Antonio to Washington, D.C. Dulles Intl Airport and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $218 and $237, respectively. Users have found that Southwest is 46% cheaper than the other options available to this destination.
What are the most reliable airlines from San Antonio to Washington, D.C. Dulles Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Antonio to Washington, D.C. Dulles Intl Airport on time: Air Canada (91%), Lufthansa (91%), United Airlines (89%).
What are the cheapest flights from San Antonio to Washington, D.C. Dulles Intl Airport?
While on average a flight from San Antonio to Washington, D.C. Dulles Intl Airport is generally $947, our data shows the cheapest flight currently is $138. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $212 for that flight.
Can I find deals for flights from San Antonio to Dulles Intl that include hotel bookings?
Yes. In addition to deals on San Antonio to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Dulles Intl.
Can I find deals for business class flights from San Antonio to Dulles Intl?
Yes. Cheapflights offers flight deals from San Antonio to Dulles Intl 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 San Antonio to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San Antonio to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

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Top 4 airlines flying from San Antonio to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$204	Average$353	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$218	Average$318	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$237	Average$392	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$248	Average$324	FlexibilityNo cancel fee	On-timeN/A

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$71+ Cheap flights from San Antonio (SAT) to Dulles Intl (IAD)

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Dulles Intl with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Antonio to Washington, D.C. Dulles Intl are usually found in February or July, booked 87 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from San Antonio to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Antonio to Dulles Intl

Cheapest flights from San Antonio to Dulles IntlExplore the most affordable flight options available from San Antonio to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

Explore the most affordable flight options available from San Antonio to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

Cheapflights Fare Finder

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

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

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

Airports

SAT

IAD

Our travel experts

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

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

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

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

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from San Antonio to Washington, D.C. Dulles Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Dulles Intl. 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 from for flights from San Antonio to Washington, D.C. Dulles Intl?

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

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

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

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

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

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

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

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Alternative routes for San Antonio to Dulles Intl

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Top 4 airlines flying from San Antonio to Dulles Intl

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Cheapest flights from San Antonio to Dulles Intl
Explore the most affordable flight options available from San Antonio to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.