Find Cheap Flights from San Antonio to Washington Dulles Intl (SAT - IAD)

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Good to Know

Low Season:
October
Best time to beat the crowds
2%
expected price decrease
High Season:
February
Most popular time to fly
7%
expected price increase
Average Price:
$441
(avg. price over the last 2 weeks)
Good Deal:
$323
or less (round trip)

When to Book Flights from San Antonio to Washington Dulles Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $322 or less.
The cheapest flight from San Antonio to Washington Dulles Intl was found 24 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be January, February and March. The cheapest month to fly is October.
Morning departure is around 38% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Antonio to Washington Dulles Intl Flights

How long does a flight from San Antonio to Washington Dulles Intl take?
An average nonstop flight takes 3h 12m, covering a distance of 1361 miles.
How many flights are there between San Antonio and Washington Dulles Intl?
There are 93 (nonstop) flights between San Antonio and Washington Dulles Intl per week, averaging 13 per day.
Which airlines provide the cheapest flights from San Antonio to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($107), American Airlines ($273) and Delta ($360).
Do I need a passport to fly between San Antonio and Washington Dulles Intl?
No.
Which airlines fly most frequently between San Antonio and Washington Dulles Intl?
Air Canada (4 times daily), United (4 times daily), Brussels Airlines (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Antonio to Washington Dulles Intl?
For San Antonio to Washington Dulles Intl, Saturday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Washington Dulles Intl back to San Antonio, the best deals are generally found on Saturday, with Thursday being the most expensive.

Book cheap flights from San Antonio to Washington Dulles Intl (round-trip)

Airports
Origin
San Antonio
$107
only
$107
Destination
Washington
$107
only
$107
Sat, Feb 3
SAT
IAD
3h 12m
Wed, Feb 7
IAD
SAT
4h 03m
Trip: 5 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
LAS
Good 6.0

The crew was very friendly.

The seats were close together and not very comfortable. No entertainment, for example a movie for a 4 hour flight. You have to pay for everything. Only thing complimentary is water.

SAT
IAD
Mediocre 2.0

BESIDES BEING IN ZONE 1 & HAVING A WINDOW SEAT? NOTHING. It probably happened by accident, because I booked the Shy before and that's all that was probably left.

Just build carry on to your flight fees. Making it an option is inconvenient. Besides business class who travels with just a personal bag? SERIOUSLY?

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

MKE
PHX
Mediocre 3.0

Service was awful. Delayed for more than 8hrs without an explanation of what type of maintenance issues were happening. Never given a straight answer as to what was happening. Food vouchers were only offered after the airport restaurants had closed. Once the plane was finished the crew had timed out and we could not leave till the following afternoon. Ended up being put up in a hotel for the night and lost an entire day of our weekend get away. Poor contingency planning on frontiers part. There was no reason

IAD
MCO
Mediocre 2.0

Unorganized, confusing boarding, confusion with seating, unbelievable lines while checking bags. Literally the only redeeming factor was the price.

Thu, Mar 29
SAT
IAD
4h 39m
Sun, Apr 1
IAD
SAT
5h 11m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
CLT
Excellent 10.0

We had two medical emergency on board so the flight attendant took care of them really well

They check in my hand carry my whole point of carrying is not to be bother with claing my luggage

SFO
LAX
Excellent 10.0

great flight

NAS
MIA
Mediocre 2.0

We had to wait almost two hrs on the plane before take off.

MAD
PHL
Good 7.0

Flight was not full.

Luggage was very late and arrived at the wrong carousel.

DFW
BMI
Mediocre 3.6

I didn’t make this flight.

Wed, Jan 24
SAT
IAD
3h 12m
Sat, Jan 27
IAD
SAT
4h 03m
Trip: 4 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
LAS
Good 6.0

The crew was very friendly.

The seats were close together and not very comfortable. No entertainment, for example a movie for a 4 hour flight. You have to pay for everything. Only thing complimentary is water.

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

MIA
LGA
Mediocre 2.0

if you have a hard engagement that you have to make, i hate to say it, but use a bigger airline. These guys are not dependable nyc -> miami. Have had 2 flights cancelled and delayed over 6 hours in the last 6 months. Only one scheduled flight everyday. If you can risk it, fine, but otherwise not worth it.

DEN
RNO
Excellent 8.6

Easy flight with good price.

No one takes cash anymore! Have to pay for all snacks! Not alot of room for broad shoulders.

MKE
PHX
Mediocre 3.0

Service was awful. Delayed for more than 8hrs without an explanation of what type of maintenance issues were happening. Never given a straight answer as to what was happening. Food vouchers were only offered after the airport restaurants had closed. Once the plane was finished the crew had timed out and we could not leave till the following afternoon. Ended up being put up in a hotel for the night and lost an entire day of our weekend get away. Poor contingency planning on frontiers part. There was no reason

Tue, May 1
SAT
IAD
3h 31m
Tue, May 8
IAD
SAT
3h 59m
Trip: 8 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
IAD
Excellent 8.3

Whole flight boarding process is quick.

SAT
IAD
Mediocre 2.0

BESIDES BEING IN ZONE 1 & HAVING A WINDOW SEAT? NOTHING. It probably happened by accident, because I booked the Shy before and that's all that was probably left.

Just build carry on to your flight fees. Making it an option is inconvenient. Besides business class who travels with just a personal bag? SERIOUSLY?

CLE
MCO
Mediocre 2.3

enough space to move around

I dislike that once I got to the airport in Cleveland before boarding schools go to Orlando they charge me $45 for a suitcase that if I would have painted with my ticket it would have been $25 and that's what it told me I had to pay at the airport if I wasn't going to pay it with my ticket it was only $25 not $45 so they charge me $45 and then when I went to board the plane to go in they tried to charge me $45 for a backpack that fits under the seat and wasn't a carry on then they charge like $3 for a can of soda I don't think I'll ever recommend Frontier to anyone or I would never travel again with them that is ridiculous being a disabled person and being taken advantage of is unacceptable

SAT
IAD
Okay 4.0

That the company charges for every little thing. Need a glass of water wait we have a fee for that...even if you are choking or having a coughing fit you get charged for water. If you choose your seat on the check in on the app, you get charge 20 bucks just for choosing your seat. The seats are so cramped with very little room. Low technology as well.

ATL
LAS
Good 6.0

The crew was very friendly.

The seats were close together and not very comfortable. No entertainment, for example a movie for a 4 hour flight. You have to pay for everything. Only thing complimentary is water.

Tue, Jul 3
SAT
IAD
5h 55m
Mon, Jul 9
IAD
SAT
6h 05m
Trip: 7 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
BOS
AUS
Good 6.0

Delayed so I was not home until middle of the night.

CVG
SFO
Okay 5.6

Boarding was fine. And service was good.

TV controls didn’t work. So I couldn’t watch anything for the 4+ hour flight.

ATL
MEX
Excellent 8.3

Tudo conforme esperado em um voo da Delta.

Nada a reclamar.

TLH
ATL
Mediocre 2.0

Ice in the morning in Atlanta and Delta cancels my 6pm flight to Atlanta leaving me no flight home that night.

LIM
ATL
Excellent 8.0

The crew, food, plane, everything was excellent

Tue, Apr 17
SAT
IAD
3h 14m
Tue, Apr 24
IAD
SAT
3h 47m
Trip: 8 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
LGA
Mediocre 2.0

if you have a hard engagement that you have to make, i hate to say it, but use a bigger airline. These guys are not dependable nyc -> miami. Have had 2 flights cancelled and delayed over 6 hours in the last 6 months. Only one scheduled flight everyday. If you can risk it, fine, but otherwise not worth it.

SAT
IAD
Okay 4.0

That the company charges for every little thing. Need a glass of water wait we have a fee for that...even if you are choking or having a coughing fit you get charged for water. If you choose your seat on the check in on the app, you get charge 20 bucks just for choosing your seat. The seats are so cramped with very little room. Low technology as well.

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

IAD
MCO
Mediocre 2.0

Unorganized, confusing boarding, confusion with seating, unbelievable lines while checking bags. Literally the only redeeming factor was the price.

RDU
MCO
Mediocre 3.3

The dirt cheap, I can't believe an airline can operate at this low an airfare and still turn a profit-ticket prices

The hidden checked-baggage fees that were almost half the cost of the actual ticket for one bag. The non reclining seats. The lack of legroom. The feeling of cattle being herded into a slaughterhouse. The lack of friendliness with the RDU and MCO gate/ticket counter agents. The cost of having to pay $12 to ensure I sit beside my 5 year old son on the flight. Besides a free seat belt, having to pay for everything else under the sun. Surprised AC was free. Not even an in-flight magazine or barf bag. Which is exactly what I feel like doing after giving you my money......

Wed, Mar 7
SAT
IAD
3h 14m
Wed, Mar 14
IAD
SAT
3h 47m
Trip: 7 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
RDU
MCO
Mediocre 3.3

The dirt cheap, I can't believe an airline can operate at this low an airfare and still turn a profit-ticket prices

The hidden checked-baggage fees that were almost half the cost of the actual ticket for one bag. The non reclining seats. The lack of legroom. The feeling of cattle being herded into a slaughterhouse. The lack of friendliness with the RDU and MCO gate/ticket counter agents. The cost of having to pay $12 to ensure I sit beside my 5 year old son on the flight. Besides a free seat belt, having to pay for everything else under the sun. Surprised AC was free. Not even an in-flight magazine or barf bag. Which is exactly what I feel like doing after giving you my money......

SAT
IAD
Okay 4.0

That the company charges for every little thing. Need a glass of water wait we have a fee for that...even if you are choking or having a coughing fit you get charged for water. If you choose your seat on the check in on the app, you get charge 20 bucks just for choosing your seat. The seats are so cramped with very little room. Low technology as well.

SAT
IAD
Mediocre 2.0

Nothing

The attendant was rude on two different occasions. he needs to be trained in customer services. They Charge for everything. what's the point of giving a food price if you end up charging more than a better airline at the end of the day. terrible terrible airline.

CLE
MCO
Mediocre 2.3

enough space to move around

I dislike that once I got to the airport in Cleveland before boarding schools go to Orlando they charge me $45 for a suitcase that if I would have painted with my ticket it would have been $25 and that's what it told me I had to pay at the airport if I wasn't going to pay it with my ticket it was only $25 not $45 so they charge me $45 and then when I went to board the plane to go in they tried to charge me $45 for a backpack that fits under the seat and wasn't a carry on then they charge like $3 for a can of soda I don't think I'll ever recommend Frontier to anyone or I would never travel again with them that is ridiculous being a disabled person and being taken advantage of is unacceptable

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

Thu, May 3
SAT
IAD
3h 31m
Tue, May 8
IAD
SAT
3h 59m
Trip: 6 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
IAD
Excellent 8.3

Whole flight boarding process is quick.

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

DEN
RNO
Excellent 8.6

Easy flight with good price.

No one takes cash anymore! Have to pay for all snacks! Not alot of room for broad shoulders.

CLE
MCO
Mediocre 2.3

enough space to move around

I dislike that once I got to the airport in Cleveland before boarding schools go to Orlando they charge me $45 for a suitcase that if I would have painted with my ticket it would have been $25 and that's what it told me I had to pay at the airport if I wasn't going to pay it with my ticket it was only $25 not $45 so they charge me $45 and then when I went to board the plane to go in they tried to charge me $45 for a backpack that fits under the seat and wasn't a carry on then they charge like $3 for a can of soda I don't think I'll ever recommend Frontier to anyone or I would never travel again with them that is ridiculous being a disabled person and being taken advantage of is unacceptable

MIA
LGA
Mediocre 2.0

if you have a hard engagement that you have to make, i hate to say it, but use a bigger airline. These guys are not dependable nyc -> miami. Have had 2 flights cancelled and delayed over 6 hours in the last 6 months. Only one scheduled flight everyday. If you can risk it, fine, but otherwise not worth it.

Thu, Jul 19
SAT
IAD
3h 31m
Tue, Jul 31
IAD
SAT
3h 59m
Trip: 13 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
IAD
MCO
Mediocre 2.0

Unorganized, confusing boarding, confusion with seating, unbelievable lines while checking bags. Literally the only redeeming factor was the price.

ATL
LAS
Good 6.0

The crew was very friendly.

The seats were close together and not very comfortable. No entertainment, for example a movie for a 4 hour flight. You have to pay for everything. Only thing complimentary is water.

SAT
IAD
Okay 4.0

That the company charges for every little thing. Need a glass of water wait we have a fee for that...even if you are choking or having a coughing fit you get charged for water. If you choose your seat on the check in on the app, you get charge 20 bucks just for choosing your seat. The seats are so cramped with very little room. Low technology as well.

MKE
PHX
Mediocre 3.0

Service was awful. Delayed for more than 8hrs without an explanation of what type of maintenance issues were happening. Never given a straight answer as to what was happening. Food vouchers were only offered after the airport restaurants had closed. Once the plane was finished the crew had timed out and we could not leave till the following afternoon. Ended up being put up in a hotel for the night and lost an entire day of our weekend get away. Poor contingency planning on frontiers part. There was no reason

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

Fri, Feb 16
SAT
IAD
3h 12m
Sat, Feb 24
IAD
SAT
4h 03m
Trip: 9 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
PHX
Mediocre 3.0

Service was awful. Delayed for more than 8hrs without an explanation of what type of maintenance issues were happening. Never given a straight answer as to what was happening. Food vouchers were only offered after the airport restaurants had closed. Once the plane was finished the crew had timed out and we could not leave till the following afternoon. Ended up being put up in a hotel for the night and lost an entire day of our weekend get away. Poor contingency planning on frontiers part. There was no reason

ONT
AUS
Excellent 9.5

The crew were kind and efficient and the planes were clean and well maintained.

No entertainment on the flights, but that is to be expected for the price.

IAD
MCO
Mediocre 2.0

Unorganized, confusing boarding, confusion with seating, unbelievable lines while checking bags. Literally the only redeeming factor was the price.

RDU
MCO
Mediocre 3.3

The dirt cheap, I can't believe an airline can operate at this low an airfare and still turn a profit-ticket prices

The hidden checked-baggage fees that were almost half the cost of the actual ticket for one bag. The non reclining seats. The lack of legroom. The feeling of cattle being herded into a slaughterhouse. The lack of friendliness with the RDU and MCO gate/ticket counter agents. The cost of having to pay $12 to ensure I sit beside my 5 year old son on the flight. Besides a free seat belt, having to pay for everything else under the sun. Surprised AC was free. Not even an in-flight magazine or barf bag. Which is exactly what I feel like doing after giving you my money......

CLE
MCO
Mediocre 2.3

enough space to move around

I dislike that once I got to the airport in Cleveland before boarding schools go to Orlando they charge me $45 for a suitcase that if I would have painted with my ticket it would have been $25 and that's what it told me I had to pay at the airport if I wasn't going to pay it with my ticket it was only $25 not $45 so they charge me $45 and then when I went to board the plane to go in they tried to charge me $45 for a backpack that fits under the seat and wasn't a carry on then they charge like $3 for a can of soda I don't think I'll ever recommend Frontier to anyone or I would never travel again with them that is ridiculous being a disabled person and being taken advantage of is unacceptable

Tue, Jul 10
SAT
IAD
5h 05m
Sat, Jul 14
IAD
SAT
5h 13m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
CLT
Excellent 10.0

We had two medical emergency on board so the flight attendant took care of them really well

They check in my hand carry my whole point of carrying is not to be bother with claing my luggage

SFO
LAX
Excellent 10.0

great flight

MAD
PHL
Good 7.0

Flight was not full.

Luggage was very late and arrived at the wrong carousel.

DFW
PHL
Mediocre 3.0

They separated my bags, so I had to wait in Philadelphia for my bag to arrive on next flight 2 1/2 hours latter. Not happy after flying from Sydney.

MIA
DCA
Excellent 10.0

New plane, 737-Max. More fuel efficient, quieter, more in-cabin luggage storage.

Seats don’t decline as much.

Sat, Jan 27
SAT
IAD
5h 19m
Mon, Jan 29
IAD
SAT
5h 42m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
PHL
Mediocre 3.0

They separated my bags, so I had to wait in Philadelphia for my bag to arrive on next flight 2 1/2 hours latter. Not happy after flying from Sydney.

SNA
DFW
Mediocre 3.6

We were unfortunately stuck on the tarmac for 45 minutes. I ran to my connecting gate but they had already closed it. There wasn’t a service rep at the gate. I walked to another gate and there was a very helpful rep who rebooked me to a nearby city. It overall was disappointing and caused me to get home about 3 1/2 hours later.

MIA
DCA
Excellent 10.0

New plane, 737-Max. More fuel efficient, quieter, more in-cabin luggage storage.

Seats don’t decline as much.

DFW
BMI
Mediocre 3.6

I didn’t make this flight.

SFO
LAX
Excellent 10.0

great flight

Thu, Jun 21
SAT
IAD
3h 31m
Sun, Jun 24
IAD
SAT
3h 59m
Trip: 4 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 7 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
IAD
Mediocre 2.0

BESIDES BEING IN ZONE 1 & HAVING A WINDOW SEAT? NOTHING. It probably happened by accident, because I booked the Shy before and that's all that was probably left.

Just build carry on to your flight fees. Making it an option is inconvenient. Besides business class who travels with just a personal bag? SERIOUSLY?

ATL
LAS
Good 6.0

The crew was very friendly.

The seats were close together and not very comfortable. No entertainment, for example a movie for a 4 hour flight. You have to pay for everything. Only thing complimentary is water.

RDU
MCO
Mediocre 3.3

The dirt cheap, I can't believe an airline can operate at this low an airfare and still turn a profit-ticket prices

The hidden checked-baggage fees that were almost half the cost of the actual ticket for one bag. The non reclining seats. The lack of legroom. The feeling of cattle being herded into a slaughterhouse. The lack of friendliness with the RDU and MCO gate/ticket counter agents. The cost of having to pay $12 to ensure I sit beside my 5 year old son on the flight. Besides a free seat belt, having to pay for everything else under the sun. Surprised AC was free. Not even an in-flight magazine or barf bag. Which is exactly what I feel like doing after giving you my money......

SAT
IAD
Excellent 8.3

Whole flight boarding process is quick.

CLE
MCO
Mediocre 2.3

enough space to move around

I dislike that once I got to the airport in Cleveland before boarding schools go to Orlando they charge me $45 for a suitcase that if I would have painted with my ticket it would have been $25 and that's what it told me I had to pay at the airport if I wasn't going to pay it with my ticket it was only $25 not $45 so they charge me $45 and then when I went to board the plane to go in they tried to charge me $45 for a backpack that fits under the seat and wasn't a carry on then they charge like $3 for a can of soda I don't think I'll ever recommend Frontier to anyone or I would never travel again with them that is ridiculous being a disabled person and being taken advantage of is unacceptable

Show more results

San Antonio to Washington Dulles Intl Flight Information

Avg. Flight Duration 3h 39m
Flights Arrive in Washington Dulles Intl
Flights Depart from San Antonio
Flight Price $107
Distance 1361 miles
Airlines Frontier, American Airlines, Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.