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

Currently priced at $237, Delta will fly you from San Antonio to Washington, D.C. Dulles Intl Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Frontier - these airlines can fly you to your destination from $240 and $257, respectively. Users have found that Delta is 41% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $102 on Frontier. Other airlines that offer cheap prices include United Airlines from $105 and Delta from $119 one-way.

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. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 $915, our data shows the cheapest flight currently is $89. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $174 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: Mesa Airlines (90%), United Airlines (87%), Air Canada (84%).

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 Wednesday departure is the best way to save up to 64% 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?

August is one of the best times of the year to fly to Washington, D.C. Dulles Intl Airport from San Antonio. Prices for August average $347 per person but you can even find prices for as low as $180. The most expensive prices can be found in the month of November. Opting for a August flight can save you 14% on your journey compared to booking in November

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

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

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 4 outbound flights to Washington, D.C. Dulles Intl per day. 3 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.

$102+ Flights from San Antonio to Washington, D.C. Dulles Intl Airport

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

Find cheap flights from San Antonio to Dulles Intl 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.

The best prices from San Antonio to Washington, D.C. Dulles Intl are usually found in February or October, booked 72 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from San Antonio to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$237 (Delta)
One-way from	$102 (Booking.com)
Popular in	March
Cheapest in	February
Average price	$328
Good round-trip deal	$397 or less
Good one-way deal	$154 or less

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

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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

Search Deals

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

Search Deals

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 febrero 21, 2025.

sáb. 3/226:26 pmSAT - IAD

1 stop5h 05mDelta

sáb. 3/2912:15 pmIAD - SAT

1 stop9h 08mDelta

Deal found 2/20

$237

vie. 5/22:25 pmSAT - IAD

1 stop6h 48mUnited Airlines

dom. 5/48:20 amIAD - SAT

Nonstop3h 44mUnited Airlines

Deal found 2/20

$240

vie. 5/21:43 pmSAT - IAD

1 stop15h 48mFrontier

dom. 5/115:26 pmIAD - SAT

1 stop27h 05mFrontier

Deal found 2/21

$257

mar. 4/11:40 pmSAT - IAD

1 stop8h 45mSouthwest

mar. 4/87:50 amIAD - SAT

2 stops10h 55mSouthwest

Deal found 2/20

$294

sáb. 5/39:10 amSAT - IAD

1 stop6h 13mAmerican Airlines

sáb. 5/38:14 pmIAD - SAT

1 stop15h 40mAmerican Airlines

Deal found 2/19

$327

mié. 4/210:58 amSAT - IAD

3 stops23h 28mMultiple Airlines

lun. 4/78:25 amIAD - SAT

3 stops26h 38mMultiple Airlines

Deal found 2/19

$331

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 febrero 21, 2025.

sáb. 3/226:26 pmSAT - IAD

1 stop5h 05mDelta

sáb. 3/2912:15 pmIAD - SAT

1 stop9h 08mDelta

Deal found 2/20

$237

vie. 5/22:25 pmSAT - IAD

1 stop6h 48mUnited Airlines

dom. 5/48:20 amIAD - SAT

Nonstop3h 44mUnited Airlines

Deal found 2/20

$240

vie. 5/21:43 pmSAT - IAD

1 stop15h 48mFrontier

dom. 5/115:26 pmIAD - SAT

1 stop27h 05mFrontier

Deal found 2/21

$257

mar. 4/11:40 pmSAT - IAD

1 stop8h 45mSouthwest

mar. 4/87:50 amIAD - SAT

2 stops10h 55mSouthwest

Deal found 2/20

$294

sáb. 5/39:10 amSAT - IAD

1 stop6h 13mAmerican Airlines

sáb. 5/38:14 pmIAD - SAT

1 stop15h 40mAmerican Airlines

Deal found 2/19

$327

mié. 4/210:58 amSAT - IAD

3 stops23h 28mMultiple Airlines

lun. 4/78:25 amIAD - SAT

3 stops26h 38mMultiple Airlines

Deal found 2/19

$331

Last-minute flights from San Antonio to Dulles Intl
Discover last-minute flight deals from San Antonio to Dulles Intl. Data last updated febrero 21, 2025 and is based on user searches.

jue. 2/275:25 amSAT - IAD

1 stop5h 23mDelta

mar. 3/185:14 pmIAD - SAT

1 stop8h 23mDelta

Deal found 2/21

$348

jue. 2/277:44 amSAT - IAD

Nonstop3h 11mUnited Airlines

mar. 3/185:10 pmIAD - SAT

1 stop7h 10mUnited Airlines

Deal found 2/19

$405

jue. 2/276:00 amSAT - IAD

2 stops9h 01mAmerican Airlines

mar. 3/189:20 amIAD - SAT

2 stops9h 07mAmerican Airlines

Deal found 2/21

$464

vie. 2/285:15 amSAT - IAD

1 stop10h 50mSouthwest

dom. 3/22:15 pmIAD - SAT

1 stop11h 50mSouthwest

Deal found 2/20

$430

dom. 3/27:50 pmSAT - IAD

1 stop20h 23mFrontier

sáb. 3/811:32 amIAD - SAT

1 stop9h 05mFrontier

Deal found 2/20

$318

dom. 3/25:45 amSAT - IAD

2 stops30h 05mMultiple Airlines

sáb. 3/88:25 amIAD - SAT

3 stops25h 51mMultiple Airlines

Deal found 2/20

$439

dom. 3/23:03 pmSAT - IAD

2 stops24h 15mAlaska Airlines

sáb. 3/87:00 amIAD - SAT

1 stop31h 07mAlaska Airlines

Deal found 2/20

$1,034

mié. 3/51:22 pmSAT - IAD

2 stops28h 13mMultiple Airlines

lun. 3/1012:55 pmIAD - SAT

3 stops22h 21mMultiple Airlines

Deal found 2/20

$339

jue. 3/66:44 pmSAT - IAD

1 stop20h 10mFrontier

sáb. 3/155:54 pmIAD - SAT

1 stop26h 43mFrontier

Deal found 2/19

$310

mar. 3/183:03 pmSAT - IAD

2 stops24h 27mAlaska Airlines

jue. 3/207:31 amIAD - SAT

2 stops23h 09mAlaska Airlines

Deal found 2/20

$618

mié. 3/197:00 amSAT - IAD

Nonstop3h 11mUnited Airlines

mié. 3/268:15 amIAD - SAT

Nonstop3h 54mUnited Airlines

Deal found 2/20

$270

jue. 3/206:11 pmSAT - IAD

1 stop4h 47mAmerican Airlines

jue. 3/275:28 pmIAD - SAT

1 stop6h 08mAmerican Airlines

Deal found 2/20

$329

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 febrero 21, 2025.

dom. 3/238:37 pmSAT - IAD

1 stop19h 36mFrontier

Deal found 2/21

$102

mar. 3/257:00 amSAT - IAD

1 stop7h 56mUnited Airlines

Deal found 2/21

$105

mar. 4/86:23 pmSAT - IAD

1 stop5h 05mDelta

Deal found 2/21

$119

vie. 4/113:05 pmSAT - IAD

1 stop6h 35mSouthwest

Deal found 2/21

$125

dom. 5/49:30 pmSAT - IAD

2 stops22h 12mMultiple Airlines

Deal found 2/21

$154

mié. 3/191:52 pmSAT - IAD

2 stops9h 06mAmerican Airlines

Deal found 2/20

$174

lun. 3/247:00 amSAT - IAD

2 stops21h 40mAlaska Airlines

Deal found 2/20

$267

Find flights from San Antonio to Dulles Intl within your budget

Fly from

Fly to

Route

Depart

Return

Price

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

sáb. 3/22

6:26 pm-12:31 am

1 stop5h 05m

Washington, D.C. Dulles Intl

sáb. 3/29

12:15 pm-8:23 pm

1 stop9h 08m

$237

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

vie. 5/2

2:25 pm-10:13 pm

1 stop6h 48m

Washington, D.C. Dulles Intl

dom. 5/4

8:20 am-11:04 am

Nonstop3h 44m

$240

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

vie. 5/2

1:43 pm-6:31 am

1 stop15h 48m

Washington, D.C. Dulles Intl

dom. 5/11

5:26 pm-7:31 pm

1 stop27h 05m

$257

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mar. 4/1

1:40 pm-11:25 pm

1 stop8h 45m

Washington, D.C. Dulles Intl

mar. 4/8

7:50 am-5:45 pm

2 stops10h 55m

$294

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

sáb. 5/3

9:10 am-4:23 pm

1 stop6h 13m

Washington, D.C. Dulles Intl

sáb. 5/3

8:14 pm-10:54 am

1 stop15h 40m

$327

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mié. 4/2

10:58 am-11:26 am

3 stops23h 28m

Washington, D.C. Dulles Intl

lun. 4/7

8:25 am-10:03 am

3 stops26h 38m

$331

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

dom. 3/23

8:37 pm-5:13 pm

1 stop19h 36m

$102

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mar. 3/25

7:00 am-3:56 pm

1 stop7h 56m

$105

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

mar. 4/8

6:23 pm-12:28 am

1 stop5h 05m

$119

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

vie. 4/11

3:05 pm-10:40 pm

1 stop6h 35m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 13 results

Compare providers for flights from San Antonio to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Dulles Intl in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars

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

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

Travel insights for flights from San Antonio to Dulles Intl

Get recent, data-driven insights about flights from San Antonio to Dulles Intl including ideal travel times, pricing trends, and more.

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 72 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 $309). Flying from San Antonio to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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 72% on airfare.

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl by month

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).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Southwest, Alaska Airlines and Delta from San Antonio to Washington, D.C. have to say. 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

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest

8.1

Very good

4,408 reviews

Southwest

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Alaska Airlines

8.0

Very good

9,697 reviews

Southwest

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Delta

8.0

Very good

8,217 reviews

Southwest

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

United Airlines

7.4

Good

8,760 reviews

Southwest

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,408 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

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 4 outbound flights to Washington, D.C. Dulles Intl per day. 3 airlines have flights to Washington, D.C. Dulles Intl from San Antonio on a regular basis.
What are the cheapest airlines flying from San Antonio to Washington, D.C. Dulles Intl Airport round-trip?
Currently priced at $237, Delta will fly you from San Antonio to Washington, D.C. Dulles Intl Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Frontier - these airlines can fly you to your destination from $240 and $257, respectively. Users have found that Delta is 41% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from San Antonio to Washington, D.C. Dulles Intl Airport one-way?
One-way options have recently been found by users for as low as $102 on Frontier. Other airlines that offer cheap prices include United Airlines from $105 and Delta from $119 one-way.
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: Mesa Airlines (90%), United Airlines (87%), Air Canada (84%).
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 $915, our data shows the cheapest flight currently is $89. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $174 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 $309). Flying from San Antonio to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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

Arlington

Alexandria

Fairfax

Springfield

Rockville

Tysons

Gaithersburg

Silver Spring

Fredericksburg

Linthicum Heights

Laurel

Falls Church

Woodbridge

Sterling

Easton

Herndon

Bowie

Reston

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from San Antonio to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$215	Average$320	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$218	Average$343	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$230	Average$418	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.

$102+ 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 3/23. 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from San Antonio to Washington, D.C. Dulles Intl are usually found in February or October, booked 72 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from San Antonio to Dulles Intl

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 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 febrero 21, 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 febrero 21, 2025.

Find flights from San Antonio to Dulles Intl within your budget

Compare providers for flights from San Antonio to Dulles Intl

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 San Antonio to Dulles Intl in February.

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.

Travel insights for flights from San Antonio to Dulles Intl

Get recent, data-driven insights about flights from San Antonio to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Dulles Intl. Price data was last updated on February 14, 2025.

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

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

Find hourly flight availability from San Antonio to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 21, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Southwest, Alaska Airlines and Delta from San Antonio to Washington, D.C. have to say. 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

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?

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

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

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?

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

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

Traveling to a place near San Antonio?

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 San Antonio to Dulles Intl

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

Top 3 airlines flying from San Antonio to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 febrero 21, 2025.