Cheap Flights from Washington D.C. to San Antonio International

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Flight deals from Washington D.C. to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to San Antonio International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Washington D.C. to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington D.C. to San Antonio International flights are currently cheapest in August.

Direct flights from Washington D.C. to San Antonio International

Washington D.C. to San Antonio International: Alternative routes

Compare routes from Washington D.C. to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

Washington D.C. to San Antonio: Flight information

The things to know before you go.
Cheapest flight found105 €
Cheapest month to flyJuly
Average flight time3 hrs, 37 mins
Most popular airlineSouthwest Airlines
Average flights per week69

Finding cheap flights from Washington D.C. to San Antonio International: Frequently asked questions

The best price we found for a return flight from Washington D.C. to San Antonio International is 105 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 36 minutes is the average flight time from Washington D.C. to San Antonio International.
Southwest Airlines, United and Air Canada fly direct from Washington D.C. to San Antonio International.
As of May 2025, there are 69 flights per week flying from Washington D.C. to San Antonio International.
The cheapest month to fly from Washington D.C. to San Antonio International is usually May 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to San Antonio International Airport on Thursday, 31 July 2025.
Yes – the average flight time is 3 hours and 36 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to San Antonio International is Spirit Airlines .

Travelling from Washington DC to San Antonio International Airport (SAT): what you need to know

  • Countless great adventures start at one of Washington DC's main airports, Ronald Reagan National Airport (DCA) or Washington Dulles International Airport (IAD). Check out your options for booking a flight from Washington DC to San Antonio International Airport (SAT) jetting off from either of these.

  • San Antonio International Airport is located in San Antonio. The city operates in the UTC-5 timezone and is 1 hour behind Washington DC.

  • Ronald Reagan National Airport (DCA) to San Antonio International Airport (SAT) is the most popular route. There are 20 direct flights a week to choose from. If you have things to do before heading off, hop on the last flight with Southwest Airlines at 22:10. Choose the first DCA to SAT departure with Southwest Airlines at 07:10 if you want to get going earlier.

  • Give yourself plenty of time to catch your flight from Washington DC to SAT. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • Popular months like July or holiday times such as Thanksgiving and Christmas will mean longer lines at check-in and security. Travelling then? Play it safe and get to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a wise move.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • DCA is about 8 kilometres from central Washington DC. To help you work out how to get there, use Google Maps. This essential traveller tool will give you the best route and available public transport options.

  • Searching for a handy hotel near Ronald Reagan National Airport? If you're catching an early flight from Washington DC to San Antonio International Airport, these accommodation options will put you moments from your departure gate:

Washington Dulles International Airport (IAD)

  • Looking to fly out of Washington Dulles International Airport (IAD)? You can book a direct flight from Washington DC to San Antonio International Airport (SAT) departing from this hub.

  • Get on your direct flight from Washington DC to SAT with United. This is one of the leading carriers operating this route out of IAD.

  • With public transport, you can travel from central Washington DC to IAD in around 3 hours and 26 minutes. The airport is roughly 56 kilometres away, and making the journey by car takes approximately 51 minutes.

  • Want to enjoy an extra night away before catching your flight from Washington DC to SAT? Kick back in a hotel near Washington Dulles International Airport before your holiday officially begins. These stays are calling your name:

About San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • San Antonio International Airport to the centre of San Antonio takes around 21 minutes in a car. It's approximately 19 kilometres away. See what options are available, such as car rentals, cabs or ride-sharing.

  • It takes roughly 1 hour and 32 minutes to get there using public transport.

How to find the cheapest flights from Washington DC to San Antonio International Airport (SAT)

  • 53 € is the lowest price we've seen for a one-way ticket from Washington DC to San Antonio International Airport. Return flights start from 105 €. Prices may vary depending on availability at the time of booking.

  • Don't leave everything to the last minute. You're more likely to find cheap tickets from Washington DC to SAT if you book in advance. Airlines often have some excellent early bird deals.

  • If you're flexible with your travel dates, use the 'Whole month' tool. It'll show you the cheapest price across the month when searching for your ticket from Washington DC to San Antonio International Airport.

  • Create a Price Alert and track any changes on this route through email or push notifications. You'll know straight away when prices fall. It's all about timing when scoring cheap tickets from Washington DC to SAT.

  • Tailor your flights with filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Washington DC to San Antonio International Airport.

The best time to fly from Washington DC to San Antonio International Airport (SAT)

  • April is the quietest time to fly to San Antonio. Alternatively, follow the crowds and take your trip in July. This is the busiest month for flights from Washington DC to San Antonio International Airport, but the best time to go is up to you.

  • Lock in your flight from Washington DC to SAT for August if you're eager to explore the city during its warmest month. You can expect temperatures in San Antonio to range from 23ºC to 40ºC.

  • If you like cooler conditions, lock in a cheap flight from Washington DC to San Antonio International Airport in January when temperatures average between 3ºC and 20ºC.

More about San Antonio

Complete your San Antonio trip with a car rental

  • Finding you a cheap flight from Washington DC to San Antonio International Airport isn't our only cool trick. Check out our car rentals in San Antonio and have more freedom to explore. We search for deals from trusted car rental providers and put them all in one place. You can instantly compare rates and then book with no fees.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.