IAD - SAT

$89 Find Cheap Flights from Washington Dulles Airport to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to San Antonio departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Antonio, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Dulles Intl to San Antonio (IAD-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to San Antonio

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to San Antonio.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
5:15 am - 11:42 amIAD-SAT
7h 27m1 stop
Frontier Logo
12:27 pm - 11:32 pmSAT-IAD
10h 05m1 stop
$178Frontier
Find Deal
Wed, May 28 - Fri, May 30
Frontier Logo
5:15 am - 11:42 amIAD-SAT
7h 27m1 stop
Frontier Logo
12:19 pm - 10:32 pmSAT-IAD
9h 13m1 stop
$181Frontier
Find Deal
Wed, May 28 - Wed, Jun 4
United Airlines Logo
8:30 am - 11:00 amIAD-SAT
3h 30mnonstop
United Airlines Logo
5:30 am - 1:57 pmSAT-IAD
7h 27m1 stop
$215United Airlines
Find Deal
Fri, May 30 - Wed, Jun 4
United Airlines Logo
5:55 pm - 8:33 pmIAD-SAT
3h 38mnonstop
United Airlines Logo
7:00 am - 11:19 amSAT-IAD
3h 19mnonstop
$229United Airlines
Find Deal
Tue, Sep 2 - Mon, Sep 8
Delta Logo
10:09 am - 3:47 pmIAD-SAT
6h 38m1 stop
Delta Logo
4:15 pm - 12:28 amSAT-IAD
7h 13m1 stop
$237Delta
Find Deal
Sat, May 24 - Thu, May 29
Delta Logo
7:05 am - 12:30 pmIAD-SAT
6h 25m1 stop
Delta Logo
1:25 pm - 9:34 pmSAT-IAD
7h 09m1 stop
$243Delta
Find Deal
Fri, May 30 - Wed, Jun 4
 Logo
9:50 pm - 9:32 pmIAD-SAT
24h 42m2 stops
 Logo
10:51 pm - 2:44 pmSAT-IAD
14h 53m2 stops
Sat, May 24 - Fri, May 30
American Airlines Logo
5:07 pm - 10:03 pmIAD-SAT
5h 56m1 stop
American Airlines Logo
2:42 pm - 11:59 pmSAT-IAD
8h 17m2 stops
$335American Airlines
Find Deal
Fri, May 30 - Sat, Jun 7
 Logo
11:54 am - 5:08 pmIAD-SAT
6h 14m1 stop
 Logo
7:05 am - 4:15 pmSAT-IAD
32h 10m3 stops
Thu, May 22 - Sun, May 25
American Airlines Logo
5:02 am - 10:52 amIAD-SAT
6h 50m1 stop
American Airlines Logo
6:05 pm - 12:02 amSAT-IAD
4h 57m1 stop
$369American Airlines
Find Deal
Fri, May 16 - Sun, May 18
Expert advice

Expert advice for your flight from Dulles Intl to San Antonio

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
IAD

For a smooth departure from IAD, use the AeroTrain to quickly navigate between terminals, especially during busy weekday mornings.

Read more about IADby Stefanie Waldek
SAT

Upon arrival at SAT, take the #5 VIA bus to downtown San Antonio. It's affordable and takes about 30 minutes, perfect for easy city access.

Read more about SATby Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Useful Info

KAYAK's insights & trends for Dulles Intl to San Antonio flights

Get data-powered insights and trends into flights from Dulles Intl to San Antonio to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to San Antonio?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to San Antonio clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to San Antonio on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Washington Dulles Airport to San Antonio. For your return ticket, we recommend flying on a Thursday and avoiding Tuesdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to San Antonio is August, where tickets cost $331 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $460 and $438 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $630 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to San Antonio, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
High seasonAugust
Cheapest flight$89
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Washington Dulles Airport to San Antonio

When to book flights from Dulles Intl to San Antonio

Are your dates flexible? Find out the best times to travel from Dulles Intl to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to San Antonio flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San Antonio was $89 for a one-way ticket and $178 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and San Antonio?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington Dulles Airport to San Antonio?

    Washington Dulles Airport and San Antonio are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at San Antonio.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to San Antonio?

    American Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the Washington Dulles Airport to San Antonio flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to San Antonio?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Washington Dulles Airport to San Antonio flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to San Antonio?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and San Antonio.

  • On which days can I fly direct from Washington Dulles Airport to San Antonio?

    There are nonstop flights from Washington Dulles Airport to San Antonio on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to San Antonio, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San Antonio are Delta and United Airlines. With an average price for the route of $344 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $422 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $129 or less one-way and $310 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to San Antonio?

Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to San Antonio

Monday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Tuesday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Wednesday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Thursday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Friday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Saturday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Sunday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

See more direct flights

Direct returns

San Antonio to Washington, D.C. Dulles Intl

Monday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Tuesday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Wednesday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Thursday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Friday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Saturday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

Sunday

Air Canada, Brussels Airlines, Lufthansa, +1 more

Air Canada, Brussels Airlines, +2 more

See more direct flights
See more direct flights

Top 3 airlines serving from Dulles Intl to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7934 reviews
7.9Comfort
8.2Boarding
7.9Entertainment
7.3Food
8.5Crew
Airline reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

8.0 ExcellentFredrick, Apr 2025GSO - DTW
Read more Delta reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

Several delays. Next flight was worse. Did not arrive home until 2am PT

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Any sort of gluten free snack option would be nice

I had a carry on and a personal bag. I put my personal item under my seat and on way to the seat I put my bag up. I usually close my eyes and rest as I was on call for last 36 hours. I heard very loud announcements that someone needs to identify their bag. Pretty sure it was not mine until the hostess pointed out my jacket details attached to the bag. I asked why she got my bag out. I got berated and did not want to create a scene. But this person needs to be talked to.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Standard. No different than a discount carrier on a short trip.

Everything you need to know for your flight from Dulles Intl to San Antonio

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