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Cheap Flights from Washington Ronald Reagan to San Antonio International

Compare Washington Ronald Reagan to San Antonio International flight deals

Find the cheapest month or even day of the year to fly to San Antonio International

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Flight deals from Washington Ronald Reagan to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Washington Ronald Reagan to San Antonio International? Find the lowest prices on one-way and return tickets right here.
San Antonio.C$104 per passenger.Departing Wed., Nov. 12.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Wed., Nov. 12, arriving in San Antonio International.Price includes taxes and charges.From C$104, select.
San Antonio.C$118 per passenger.Departing Tue., Oct. 7.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Tue., Oct. 7, arriving in San Antonio International.Price includes taxes and charges.From C$118, select.
San Antonio.C$177 per passenger.Departing Wed., Dec. 3.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Wed., Dec. 3, arriving in San Antonio International.Price includes taxes and charges.From C$177, select.
San Antonio.C$186 per passenger.Departing Sat., Jan. 3.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Sat., Jan. 3, arriving in San Antonio International.Price includes taxes and charges.From C$186, select.
San Antonio.C$186 per passenger.Departing Mon., Apr. 6.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Mon., Apr. 6, arriving in San Antonio International.Price includes taxes and charges.From C$186, select.
San Antonio.C$208 per passenger.Departing Fri., Sep. 26.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Fri., Sep. 26, arriving in San Antonio International.Price includes taxes and charges.From C$208, select.
San Antonio.C$267 per passenger.Departing Sat., Mar. 14.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Sat., Mar. 14, arriving in San Antonio International.Price includes taxes and charges.From C$267, select.

Find the cheapest month to fly from Washington Ronald Reagan 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 Ronald Reagan to San Antonio International flights are currently cheapest in November.
Sep.
from C$208
Oct.
from C$118
Nov.
from C$104
Dec.
from C$177
Jan.
from C$186
Feb.
Find prices
Mar.
from C$267
Apr.
from C$186
May
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Jun.
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Jul.
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Aug.
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Direct flights from Washington Ronald Reagan to San Antonio International

Washington Ronald Reagan to San Antonio International: Alternative routes

Compare routes from Washington Ronald Reagan 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$104
Cheapest month to flyNovember
Average flight time3 hrs, 44 mins
Most popular airlineAmerican Airlines
Average flights per week8

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

The best price we found for a return flight from Washington Ronald Reagan to San Antonio International is C$231. 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 44 minutes is the average flight time from Washington Ronald Reagan to San Antonio International.
American Airlines flies direct from Washington Ronald Reagan to San Antonio International.
As of September 2025, there are 8 flights per week flying from Washington Ronald Reagan to San Antonio International.
The cheapest month to fly from Washington Ronald Reagan to San Antonio International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Ronald Reagan Airport to San Antonio International Airport on Wednesday, October 15, 2025.
Yes – the average flight time is 3 hours and 44 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.
Currently, Frontier Airlines offers the cheapest flight tickets to San Antonio International.

Traveling from Ronald Reagan National Airport (DCA) to San Antonio International Airport (SAT): what you need to know

  • Longer lines at check-in and security are more likely if you're heading away during high season, so give yourself a little extra breathing room. A good general rule for peak times? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.

  • To break up your flight from Ronald Reagan National Airport to San Antonio International Airport, consider adding a stopover. Just deselect 'Direct flights only' and find a city that appeals to you. Popular stopovers on the DCA - SAT route are:

    • Charlotte Douglas International Airport

    • Nashville International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Ronald Reagan National Airport (DCA) to San Antonio International Airport (SAT)

  • C$104 is currently the best price for a one-way ticket from Ronald Reagan National Airport to San Antonio International Airport. A return flight starts at C$231. These prices may change based on demand and availability.

  • To find cheap flight tickets from DCA to SAT, book in advance. Airlines usually offer the most competitive fares when flights are first released.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' search tool. It'll give you the lowest price across every month when looking for your ticket from Ronald Reagan National Airport to San Antonio International Airport.

  • Create a Price Alert for cheap flight tickets from DCA to SAT. There's no need to search every day to see if prices have fallen. We'll let you know as soon as the price changes.

  • Take advantage of filters to find the best trip for you. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Ronald Reagan National Airport to San Antonio International Airport, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about Ronald Reagan National Airport (DCA)

  • Ronald Reagan National Airport is about 8 kilometres from central Washington DC. If you're ride-sharing, catching a cab or driving from the center, it'll take you 16 minutes or so to get there, depending on traffic. If you're using public transport, expect the journey time to be approximately 43 minutes.

  • Booked an early flight from Ronald Reagan National Airport to San Antonio International Airport? Avoid the hassle of rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels close to DCA:

Arriving at San Antonio International Airport (SAT)

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

  • San Antonio International Airport is approximately 19 kilometres from central San Antonio. With your own car rental or if you're catching a cab, the drive is around 21 minutes.

  • Traveling on public transport takes around 1 hour and 32 minutes.

When to fly to San Antonio International Airport (SAT)

  • July is the busiest month for flights from Ronald Reagan National Airport to San Antonio International Airport. To avoid the crowds, head to San Antonio in April.

  • The warmest month in San Antonio is August, with the temperature ranging between 23ºC and 40ºC. Lock in your flights from Ronald Reagan National Airport to San Antonio International Airport in this month if you like this kind of weather.

  • Look for cheap flight tickets from DCA to SAT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 3ºC and 20ºC on average.

More about San Antonio

  • Once you've locked in your flights from DCA to SAT, you'll want to find a place to stay in San Antonio. Make one of these accommodation options your base for exploring this exciting destination:

  • There are so many things to explore in this city it can be difficult to know where to begin. The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral are top sights which should feature on any well-planned San Antonio itinerary.

Complete your San Antonio trip with hotels and a car rental

  • You've got your cheap ticket to San Antonio International Airport — now it's time to find a great place to stay, and maybe even a set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in San Antonio.

Plan the rest of your trip from Washington D.C. to San Antonio

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