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Cheap Flights from San Antonio International to Baltimore Washington International

Compare San Antonio International to Baltimore Washington International flight deals

Find the cheapest month or even day of the year to fly to Baltimore Washington International

Book the best Baltimore Washington International fare with no extra fees

Flight deals from San Antonio International to Baltimore Washington International

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to Baltimore Washington International Airport? If you want to travel next month, return fares start from R 4,090. Find the lowest prices on one-way and return tickets right here.
Washington D.C..R 2,003 per passenger.Departing Wed, 14 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 14 Oct, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,003, select.
Washington D.C..R 2,091 per passenger.Departing Sat, 5 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 5 Sep, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,091, select.
Washington D.C..R 2,097 per passenger.Departing Mon, 10 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 10 Aug, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,097, select.
Washington D.C..R 2,485 per passenger.Departing Mon, 12 Oct.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Mon, 12 Oct, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,485, select.
Washington D.C..R 2,485 per passenger.Departing Mon, 24 Aug.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Mon, 24 Aug, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,485, select.
Washington D.C..R 2,485 per passenger.Departing Mon, 7 Sep.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Mon, 7 Sep, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,485, select.
Washington D.C..R 2,811 per passenger.Departing Mon, 7 Dec.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Mon, 7 Dec, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,811, select.
Washington D.C..R 2,986 per passenger.Departing Thu, 14 Jan.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Thu, 14 Jan, arriving in Baltimore Washington International.Price includes taxes and charges.From R 2,986, select.
Washington D.C..R 3,239 per passenger.Departing Sat, 25 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 25 Jul, arriving in Baltimore Washington International.Price includes taxes and charges.From R 3,239, select.
Washington D.C..R 3,633 per passenger.Departing Tue, 24 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 24 Nov, arriving in Baltimore Washington International.Price includes taxes and charges.From R 3,633, select.
Washington D.C..R 3,636 per passenger.Departing Tue, 24 Nov.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Tue, 24 Nov, arriving in Baltimore Washington International.Price includes taxes and charges.From R 3,636, select.
Washington D.C..R 7,586 per passenger.Departing Fri, 24 Jul.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Fri, 24 Jul, arriving in Baltimore Washington International.Price includes taxes and charges.From R 7,586, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Baltimore Washington International flights are currently cheapest in October.
Jul
from R 3,239
Aug
from R 2,097
Sep
from R 2,091
Oct
from R 2,003
Nov
from R 3,633
Dec
from R 2,811
Jan
from R 2,986
Feb
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Mar
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Apr
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May
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Jun
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Direct flights from San Antonio International to Baltimore Washington International

San Antonio International to Baltimore Washington International: 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 Baltimore Washington International.

Washington Ronald Reagan

5km from central Washington D.C.
ClosestCheapest
from R 1,997
Search flights

Washington Dulles

37km from central Washington D.C.
from R 2,237
Search flights

Baltimore Washington International

44km from central Washington D.C.
from R 2,003
Search flights

San Antonio to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR 2,003
Cheapest month to flyOctober
Average flight time3 hrs, 16 mins
Most popular airlineSouthwest Airlines
Average flights per week16

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

The best price we found for a return flight from San Antonio International to Baltimore Washington International is R 4,005. 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 16 minutes is the average flight time from San Antonio International to Baltimore Washington International.
Southwest Airlines flies direct from San Antonio International to Baltimore Washington International.
As of July 2026, there are 16 flights per week flying from San Antonio International to Baltimore Washington International.
The cheapest month to fly from San Antonio International to Baltimore Washington International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Baltimore Washington International Airport on Saturday, 5 September 2026.
Yes – the average flight time is 3 hours and 16 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 Baltimore Washington 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Baltimore Washington International.

Flying from San Antonio International Airport (SAT) to Baltimore Washington International Airport (BWI): what you need to know

  • Take a direct flight from San Antonio International Airport to Baltimore Washington International Airport and you'll be travelling for an average of 3 hours 20 minutes.

  • Washington DC's timezone is UTC-5, which makes Washington DC one hour ahead of San Antonio.

  • Each week, there are nine San Antonio International Airport to Baltimore Washington International Airport flights. If you want to get going as soon as possible, go for the 05:00 Southwest Airlines flight. If you'd rather make the most of your day before you fly, the latest flight is at 17:40 with Southwest Airlines.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your SAT to BWI flight.

  • Flying during a peak month such as July? Public holidays and other popular seasons can lead to longer lines and delays at airport checkpoints. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

  • Southwest Airlines is your ticket to exploring Washington DC (and maybe even some other great parts of the United States!). Browse the direct flights from San Antonio International Airport to Baltimore Washington International Airport offered by this carrier.

  • The airline that serves the most passengers on this route is Southwest Airlines.

  • Southwest Airlines is the most punctual carrier that operates SAT to BWI flights. A dependable 83.59% of its departures on this route land on time.

  • If you'd like to break up your flight, just deselect 'Direct flights only' when searching for your ticket from San Antonio International Airport to Baltimore Washington International Airport. Here are the top stopovers between SAT and BWI:

    • Atlanta Hartsfield-Jackson Airport

    • Nashville Airport

    • St Louis Airport

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

  • R 2,003 is currently the best price for a one-way San Antonio International Airport to Baltimore Washington International Airport flight. A return flight starts from R 4,005. These fares can change based on availability and demand.

  • To score cheap tickets from SAT to BWI, book in advance. Airlines usually offer lower fares when flights are first released.

  • Schedule your trip for May. That's the cheapest month for flights from San Antonio International Airport to Baltimore Washington International Airport. If you're flexible with your dates, try out the 'Whole month' tool to see the lowest price across each month.

  • Finding cheap flights from SAT to BWI couldn't be easier with Price Alerts. Simply set up one of these automatic alerts and we'll notify you as soon as there's a better deal.

  • Pick your preferred arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from San Antonio International Airport to Baltimore Washington International Airport.

Handy information about San Antonio International Airport (SAT)

  • SAT is located at 9800 Airport Boulevard.

  • 82% of flights leaving San Antonio International Airport reach their destination as planned. Given its solid on-time performance, 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 ride-sharing, catching a taxi or driving from the centre, it'll take you 20 minutes or so to arrive, depending on the traffic.

  • Catching public transport? Expect a trip time of around 50 minutes.

  • Get your trip off to a relaxed start by staying near SAT. Whether you have an early flight from San Antonio International Airport to Baltimore Washington International Airport or just don't like being rushed, these hotels are perfect:

Arriving at Baltimore Washington International Airport (BWI)

When to fly to Baltimore Washington International Airport (BWI)

  • The quietest month for a flight from San Antonio International Airport to Baltimore Washington International Airport is March, while July is the busiest. Choose the ideal time to go to Washington DC based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • When booking your flight from San Antonio International Airport to Baltimore Washington International Airport, think about the kind of weather you enjoy. July is the warmest month in Washington DC, with the temperature ranging from 19ºC (66ºF) to 33ºC (91ºF).

  • January has average temperatures of between -6ºC (21ºF) and 10ºC (50ºF). Look for cheap tickets from SAT to BWI sometime around then if you like travelling in cooler conditions.

Explore more of the United States

  • You've done Washington DC, now it's time to discover other parts of the United States. Journey around 322 kilometres north-east to New York to tick off its must-visit sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, there's plenty to keep you busy.

  • If you're ready to explore another great destination in the United States, head for Philadelphia, roughly 193 kilometres north-east of Washington DC. Independence Hall, Liberty Bell and Philadelphia Museum of Art are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.