Cheap flights from Washington Dulles to San Antonio International

Compare Washington Dulles to San Antonio International flight deals

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Flight deals from Washington Dulles to San Antonio International

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

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Find the cheapest month to fly from Washington Dulles 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 Dulles to San Antonio International flights are currently cheapest in July.

Direct flights from Washington Dulles to San Antonio International

Washington Dulles to San Antonio International: Alternative routes

Compare routes from Washington Dulles 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 foundC$427
Cheapest month to flyJuly
Average flight time3 hrs, 34 mins
Most popular airlineUnited
Average flights per week39

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

The best price we found for a round-trip flight from Washington Dulles to San Antonio International is C$427. 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 34 minutes is the average flight time from Washington Dulles to San Antonio International.
United, Air Canada and Brussels Airlines fly direct from Washington Dulles to San Antonio International.
There are 39 flights per week flying from Washington Dulles to San Antonio International, as of April 2024.
The cheapest month to fly from Washington Dulles to San Antonio International is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to San Antonio International Airport on Thursday, July 11, 2024.
Yes – the average flight time is 3 hours and 34 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 International is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta and United offer the cheapest flight tickets to San Antonio International.

How to find cheap flights to San Antonio (SAT) from Washington, D.C. (IAD) in 2024

Looking for cheap tickets from Washington Dulles to San Antonio International? Round-trip tickets start from C$427 and one-way flights to San Antonio International from Washington Dulles start from C$326

Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit "search." From American Airlines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Washington Dulles to San Antonio. And with us, there are no hidden fees – what you see is what you pay.
  • Compare flight deals to San Antonio from Washington, D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to San Antonio start from C$326 one-way.
  • Flex your dates to find the best IAD–SAT ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to San Antonio International from Washington Dulles.
  • Set up a Price Alert. You can easily track the fare of your cheap Washington Dulles-San Antonio flights by creating an alert. Whenever prices go up or down, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Washington Dulles and San Antonio International? Make sure to check "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: United
    Air Canada
    Brussels Airlines
    Lufthansa
    Mesa Airlines
  • Find the cheapest Business class flights from Washington Dulles and San Antonio International. We scour the Internet for the best Business, Premium Economy and First Class flight fares to San Antonio, too. Check the difference in price as you search – you might just chance upon a last-minute deal. Note that not all cabin classes are available for every destination or airline.
  • Flexible on when you travel? The cheapest month to fly from Washington Dulles to San Antonio International is July.
  • Include nearby airports in your search. Widen your search for Washington Dulles to San Antonio International flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
  • Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Washington Dulles and San Antonio International whenever you want.

Combine your flight to San Antonio International from Washington Dulles with hotels and car rental

Once you've secured your cheap flight ticket from Washington Dulles to San Antonio International, discover the best prices and exclusive rates for hotels in San Antonio or nearby. You can also compare hundreds of car rental companies all at once so you get the best car rental price for your trip.


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