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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

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Flight deals from San Antonio International to Baltimore Washington International

Looking for a cheap last-minute deal or the best round-trip flight from San Antonio International Airport to Baltimore Washington International Airport? If you want to travel next month, round-trip fares start from $257. Find the lowest prices on one-way and round-trip tickets right here.
Washington, D.C..$257 per passenger.Departing Fri, Jun 5, returning Tue, Jun 9.Round-trip flight with Breeze Airways and Frontier Airlines.Outbound indirect flight with Breeze Airways, departing from San Antonio International on Fri, Jun 5, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Tue, Jun 9, arriving in San Antonio International.Price includes taxes and charges.From $257, select.
Washington, D.C..$262 per passenger.Departing Wed, May 20, returning Sat, May 23.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from San Antonio International on Wed, May 20, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Sat, May 23, arriving in San Antonio International.Price includes taxes and charges.From $262, select.
Washington, D.C..$290 per passenger.Departing Mon, Aug 3, returning Thu, Aug 6.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from San Antonio International on Mon, Aug 3, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Thu, Aug 6, arriving in San Antonio International.Price includes taxes and charges.From $290, select.
Washington, D.C..$323 per passenger.Departing Tue, Jul 7, returning Tue, Jul 14.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from San Antonio International on Tue, Jul 7, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Tue, Jul 14, arriving in San Antonio International.Price includes taxes and charges.From $323, select.
Washington, D.C..$326 per passenger.Departing Wed, May 27, returning Mon, Jun 1.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from San Antonio International on Wed, May 27, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Mon, Jun 1, arriving in San Antonio International.Price includes taxes and charges.From $326, select.
Washington, D.C..$355 per passenger.Departing Mon, Jun 22, returning Mon, Jul 13.Round-trip flight with Breeze Airways and Frontier Airlines.Outbound indirect flight with Breeze Airways, departing from San Antonio International on Mon, Jun 22, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Mon, Jul 13, arriving in San Antonio International.Price includes taxes and charges.From $355, select.
Washington, D.C..$358 per passenger.Departing Sat, Jul 25, returning Tue, Aug 11.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from San Antonio International on Sat, Jul 25, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Tue, Aug 11, arriving in San Antonio International.Price includes taxes and charges.From $358, select.
Washington, D.C..$376 per passenger.Departing Tue, Jun 2, returning Wed, Jun 3.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Tue, Jun 2, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Wed, Jun 3, arriving in San Antonio International.Price includes taxes and charges.From $376, select.
Washington, D.C..$377 per passenger.Departing Wed, Sep 9, returning Wed, Sep 9.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Wed, Sep 9, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Wed, Sep 9, arriving in San Antonio International.Price includes taxes and charges.From $377, select.
Washington, D.C..$397 per passenger.Departing Tue, Jul 7, returning Tue, Jul 14.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Tue, Jul 7, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Tue, Jul 14, arriving in San Antonio International.Price includes taxes and charges.From $397, select.
Washington, D.C..$398 per passenger.Departing Tue, May 26, returning Thu, May 28.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Tue, May 26, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Thu, May 28, arriving in San Antonio International.Price includes taxes and charges.From $398, select.
Washington, D.C..$399 per passenger.Departing Thu, May 28, returning Tue, Jun 2.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Thu, May 28, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Tue, Jun 2, arriving in San Antonio International.Price includes taxes and charges.From $399, select.
Washington, D.C..$471 per passenger.Departing Tue, Sep 29, returning Thu, Oct 1.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from San Antonio International on Tue, Sep 29, arriving in Baltimore Washington International.Inbound indirect flight with Southwest Airlines, departing from Baltimore Washington International on Thu, Oct 1, arriving in San Antonio International.Price includes taxes and charges.From $471, select.
Washington, D.C..$475 per passenger.Departing Tue, Jun 30, returning Sun, Jul 5.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Tue, Jun 30, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Sun, Jul 5, arriving in San Antonio International.Price includes taxes and charges.From $475, select.
Washington, D.C..$476 per passenger.Departing Sat, Jul 25, returning Tue, Aug 11.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from San Antonio International on Sat, Jul 25, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departing from Baltimore Washington International on Tue, Aug 11, arriving in San Antonio International.Price includes taxes and charges.From $476, select.
Washington, D.C..$567 per passenger.Departing Thu, Oct 22, returning Mon, Oct 26.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from San Antonio International on Thu, Oct 22, arriving in Baltimore Washington International.Inbound indirect flight with Southwest Airlines, departing from Baltimore Washington International on Mon, Oct 26, arriving in San Antonio International.Price includes taxes and charges.From $567, 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 June.
May
from $262
Jun
from $257
Jul
from $323
Aug
from $290
Sep
from $377
Oct
from $567
Nov
from $584
Dec
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Jan
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Feb
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Mar
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Apr
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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 $204
Search flights

Camp Springs Andrews AFB

17km from central Washington, D.C.
Search flights

Washington Dulles

37km from central Washington, D.C.
from $229
Search flights

Baltimore Washington International

44km from central Washington, D.C.
from $257
Search flights

Manassas

47km from central Washington, D.C.
Search flights

San Antonio to Washington, D.C.: Flight information

The things to know before you go.
Cheapest flight found$257
Cheapest month to flyJune
Average flight time3 hrs, 17 mins
Most popular airlineSouthwest Airlines
Average flights per week18

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

The best price we found for a round-trip flight from San Antonio International to Baltimore Washington International is $257. 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 17 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.
There are 18 flights per week flying from San Antonio International to Baltimore Washington International, as of May 2026.
The cheapest month to fly from San Antonio International to Baltimore Washington International is usually June.
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 Friday, June 5, 2026.
Yes – the average flight time is 3 hours and 17 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, Breeze Airways and Southwest Airlines offer the cheapest flight tickets to Baltimore Washington International.

Traveling from San Antonio International Airport (SAT) to Baltimore/Wash International Thurgood Marshall Airport (BWI): what you need to know

  • Around 3 hours 15 minutes is how long you'll be traveling on a direct flight from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport.

  • Washington DC is one hour ahead of San Antonio and observes the UTC-4 timezone.

  • Flights from SAT to BWI start from 05:00 — the earliest with Southwest Airlines. The latest departure is at 19:50 with Southwest Airlines. In total, you can choose from 12 weekly San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport flights.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Get to the airport on time to catch your SAT to BWI flight.

  • During popular months like July, it's best to get to the airport earlier than normal. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're traveling during a high season in general.

  • Southwest Airlines has direct flights from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport. Book with this popular airline, then get ready to see the sights in Washington DC — and maybe even more of United States if time allows.

  • Southwest Airlines is the airline most travelers choose for this route.

  • Southwest Airlines is the most punctual carrier offering SAT to BWI flights. An impressive 83.59% of its services on this route arrive as planned.

  • If you want to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport. Here are the most popular stopovers between SAT and BWI:

    • Lambert-St. Louis International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • Nashville International Airport

How to find the cheapest flights from San Antonio International Airport (SAT) to Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • $131 is the lowest price for a one-way San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport flight. A return flight starts at $257. These fares can change based on availability and demand.

  • Book six months before your departure date. After looking at the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from SAT to BWI.

  • May is the cheapest month for flights from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport. If you need to fly at a different time of year, the 'Whole month' tool will give you the lowest prices across every month.

  • Spend less time searching for cheap flights from SAT to BWI by setting up a Price Alert. You'll receive an email or push notification on the app when a special offer becomes available.

  • Choose your ideal departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport.

Handy information about San Antonio International Airport (SAT)

  • The address for SAT is 9800 Airport Boulevard.

  • San Antonio International Airport gets high marks for on-time performance. 83.17% of flights that depart SAT arrive at their destination without delay.

  • Central San Antonio to San Antonio International Airport is around 19 kilometers. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, catching a cab or ride-sharing.

  • The journey on public transport takes about 1 hour 30 minutes.

  • Have an early flight from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport? Avoid rushing to the airport (and get some extra shut-eye) by choosing one of these stays near SAT:

Arriving at Baltimore/Wash International Thurgood Marshall Airport (BWI)

Getting from Baltimore/Wash International Thurgood Marshall Airport (BWI) to central Washington DC

  • Baltimore/Wash International Thurgood Marshall Airport to central Washington DC has a drive time of about 50 minutes. It's approximately 48 kilometers away.

  • If you're traveling on public transport, expect a journey of about 1 hour 30 minutes.

When to fly to Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • The quietest month for a flight from San Antonio International Airport to Baltimore/Wash International Thurgood Marshall Airport is May, while July is the busiest. Pick the best time to go to Washington DC based on whether you prefer a faster pace or a more relaxed vibe.

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

  • Search for cheap tickets from SAT to BWI in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

Explore more of United States

  • Washington DC has loads to offer, but there are so many other parts of United States waiting to be explored. Around 322 kilometers north-east of Washington DC, a visit to New York will keep your itinerary busy. Check out popular attractions like Statue of Liberty, Central Park and Empire State Building.

  • Around 193 kilometers north-east of Washington DC, Philadelphia is another favorite stop in United States. Experience major highlights starting with Liberty Bell, Independence Hall and Philadelphia Museum of Art.

More travel options

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