Cheap Flights from San Antonio International to Washington Dulles

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Flight deals from San Antonio International to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to Washington Dulles Airport? If you want to travel next month, return fares start from Rs63,822. Find the lowest prices on one-way and return tickets right here.

Washington D.C..Rs26,472 per passenger.Departing Wed, 26 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 26 Aug, arriving in Washington Dulles.Price includes taxes and charges.From Rs26,472, select.

Washington D.C..Rs28,334 per passenger.Departing Mon, 5 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 5 Oct, arriving in Washington Dulles.Price includes taxes and charges.From Rs28,334, select.

Washington D.C..Rs31,980 per passenger.Departing Wed, 2 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 2 Sep, arriving in Washington Dulles.Price includes taxes and charges.From Rs31,980, select.

Washington D.C..Rs40,653 per passenger.Departing Tue, 1 Dec.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 1 Dec, arriving in Washington Dulles.Price includes taxes and charges.From Rs40,653, select.

Washington D.C..Rs40,653 per passenger.Departing Mon, 1 Mar.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Mon, 1 Mar, arriving in Washington Dulles.Price includes taxes and charges.From Rs40,653, select.

Washington D.C..Rs50,086 per passenger.Departing Mon, 2 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 2 Nov, arriving in Washington Dulles.Price includes taxes and charges.From Rs50,086, select.

Washington D.C..Rs54,655 per passenger.Departing Sun, 6 Sep.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Sun, 6 Sep, arriving in Washington Dulles.Price includes taxes and charges.From Rs54,655, select.

Washington D.C..Rs77,071 per passenger.Departing Fri, 1 Jan.One-way flight with United.Outbound indirect flight with United, departs from San Antonio International on Fri, 1 Jan, arriving in Washington Dulles.Price includes taxes and charges.From Rs77,071, select.

Washington D.C..Rs79,559 per passenger.Departing Sun, 28 Feb.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Sun, 28 Feb, arriving in Washington Dulles.Price includes taxes and charges.From Rs79,559, select.

Washington D.C..Rs80,040 per passenger.Departing Mon, 28 Dec.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Mon, 28 Dec, arriving in Washington Dulles.Price includes taxes and charges.From Rs80,040, select.

Washington D.C..Rs80,040 per passenger.Departing Fri, 1 Jan.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Fri, 1 Jan, arriving in Washington Dulles.Price includes taxes and charges.From Rs80,040, select.

Washington D.C..Rs80,213 per passenger.Departing Thu, 1 Oct.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Thu, 1 Oct, arriving in Washington Dulles.Price includes taxes and charges.From Rs80,213, select.

Washington D.C..Rs80,248 per passenger.Departing Thu, 27 Aug.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Thu, 27 Aug, arriving in Washington Dulles.Price includes taxes and charges.From Rs80,248, select.

Washington D.C..Rs80,248 per passenger.Departing Sun, 1 Nov.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Sun, 1 Nov, arriving in Washington Dulles.Price includes taxes and charges.From Rs80,248, select.

Washington D.C..Rs93,942 per passenger.Departing Mon, 1 Mar.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Mon, 1 Mar, arriving in Washington Dulles.Price includes taxes and charges.From Rs93,942, select.

Washington D.C..Rs93,942 per passenger.Departing Sun, 28 Feb.One-way flight with United.Outbound direct flight with United departs from San Antonio International on Sun, 28 Feb, arriving in Washington Dulles.Price includes taxes and charges.From Rs93,942, select.

Find the cheapest month to fly from San Antonio International to Washington Dulles

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

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Direct flights from San Antonio International to Washington Dulles

San Antonio International to Washington Dulles: Alternative routes

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

San Antonio to Washington D.C.: Flight information

The things to know before you go.

Cheapest flight found	Rs26,472
Cheapest month to fly	August
Average flight time	3 hrs, 21 mins
Most popular airline	United
Average flights per week	56

Finding cheap flights from San Antonio International to Washington Dulles: Frequently asked questions

How much are return flights from San Antonio International to Washington Dulles?

The best price we found for a return flight from San Antonio International to Washington Dulles is Rs63,822. 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.

How long does it take to fly from San Antonio International to Washington Dulles?

3 hours and 21 minutes is the average flight time from San Antonio International to Washington Dulles.

Which airlines fly direct from San Antonio International to Washington Dulles?

United, Lufthansa and Air Canada fly direct from San Antonio International to Washington Dulles.

How many flights are there a week from San Antonio International to Washington Dulles?

As of August 2026, there are 56 flights per week flying from San Antonio International to Washington Dulles.

When is the cheapest time to fly from San Antonio International to Washington Dulles?

The cheapest month to fly from San Antonio International to Washington Dulles is usually September.

Which upcoming date is cheapest to fly from San Antonio International Airport to Washington Dulles Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Washington Dulles Airport on Saturday, 19 September 2026.

Can I get a direct flight from San Antonio International Airport to Washington Dulles Airport?

Yes – the average flight time is 3 hours and 21 minutes.

How can I find the best flight deal to Washington Dulles?

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 Washington Dulles 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.

When is the best time to book flights to Washington D.C.?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from San Antonio International Airport to Washington Dulles with?

Currently, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

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

The average time for a direct flight from San Antonio International Airport to Washington Dulles Airport is 3 hours 15 minutes.
Washington DC is one hour ahead of San Antonio and observes the UTC-5 timezone.
Flights from SAT to IAD start at 06:00 — the first with United Airlines. The last service of the day is at 16:45 with United Airlines. In total, you can take your pick of 14 weekly San Antonio International Airport to Washington Dulles Airport flights.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to board your SAT to IAD flight.
You'll likely experience bigger queues in popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures will give you ample time for security and boarding.
United is your gateway to exploring Washington DC (and perhaps some other great corners of the United States!). Check out the direct flights from San Antonio International Airport to Washington Dulles Airport offered by this airline.
United is the airline with the highest passenger demand for this route.
With a reliable 92.93% of services landing on schedule, United is the most punctual carrier offering SAT to IAD flights.
If you'd like to explore another city along the way, simply deselect 'Direct flights only' when searching for your ticket from San Antonio International Airport to Washington Dulles Airport. These are the top stopovers between SAT and IAD:
- Atlanta Hartsfield-Jackson Airport
- Houston George Bush Intercntl. Airport
- New Orleans Louis Armstrong Airport

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

Rs26,472 is currently the lowest price for a one-way San Antonio International Airport to Washington Dulles Airport flight. A return flight starts at Rs63,822. These prices may change depending on demand.
To secure cheap tickets from SAT to IAD, reserve your journey five months before your departure.
The cheapest month for flights from San Antonio International Airport to Washington Dulles Airport is October. Use the 'Whole month' tool to see the lowest prices if you have flexible travel dates.
Cut down on the time spent looking for cheap flights from SAT to IAD by setting up a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.
Pick your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from San Antonio International Airport to Washington Dulles Airport.

Handy information about San Antonio International Airport (SAT)

SAT is located at 9800 Airport Boulevard.
82% of flights departing from San Antonio International Airport land at their destination according to schedule. Given its impressive on-time stats, you're unlikely to face delays when taking off from SAT.
San Antonio International Airport is about 14 kilometres from central San Antonio. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.
Catching public transport? You can expect a journey time of around 50 minutes.
Looking for a convenient hotel near SAT? If you're catching an early flight from San Antonio International Airport to Washington Dulles Airport, these stays will put you moments from your departure lounge:

Arriving at Washington Dulles Airport (IAD)

The last thing you want is a long journey to your hotel if you're landing late on a San Antonio International Airport to Washington Dulles Airport flight. Check in to one of these accommodation options near IAD instead:
Say yes to new adventures by picking up a Washington Dulles Airport rental car. Grab a set of wheels from Dollar, Thrifty or Sixt to explore Washington DC and beyond.
Booking your vehicle from Washington Dulles Airport around one week ahead gives you the best shot at securing a great deal.

Getting from Washington Dulles Airport (IAD) to central Washington DC

IAD is located at 1 Saarinen Circle.
From Washington Dulles Airport, Washington DC is approximately 40 kilometres away. It takes around 45 minutes to drive to the centre.
If you're travelling by public transport, expect a journey time of about 1 hour 10 minutes.

When to fly to Washington Dulles Airport (IAD)

July is the most popular month for flights from San Antonio International Airport to Washington Dulles Airport. For smaller crowds, visit Washington DC in February.
Book your flight from San Antonio International Airport to Washington Dulles Airport for July if you'd like to visit Washington DC during its warmest month. Expect temperatures of between 19ºC and 33ºC.
January has average temperatures of between -6ºC and 10ºC. Search for cheap tickets from SAT to IAD around that time if you want to travel when it's cooler.

Explore more of the United States

You've seen Washington DC, now it's time to explore other parts of the United States. Journey around 322 kilometres north-east to New York to tick off its popular sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, you'll have a packed itinerary ahead.
If you want to check out another side of the United States, head for Philadelphia, about 193 kilometres north-east of Washington DC. Independence Hall, Liberty Bell and Philadelphia Museum of Art are key reasons to visit.