A riverside walkway with colorful umbrellas and a stone bridge.

£188 Cheap Flights from Baltimore (BWI) to San Antonio (SAT)

View £188 flight on Sun, 13 Sept 2026Opens in a new window

Popular airlines from Baltimore Washington International Airport (BWI) to San Antonio International Airport (SAT)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Baltimore (BWI) to San Antonio (SAT)

Prices were available within the past 7 days and start at £188 for one-way flights and £213 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 15 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£213 Return, found 4 days ago
£213
Return
found 4 days ago
Select Delta flight, departing Tue, 15 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £213 found 4 days ago
Delta
Mon, 14 Sept - Tue, 15 Sept
BWI
Baltimore
SAT
San Antonio
£217 Return, found 4 days ago
£217
Return
found 4 days ago
Select Delta flight, departing Mon, 14 Sept from Baltimore to San Antonio, returning Tue, 15 Sept, priced at £217 found 4 days ago
United
Tue, 15 Sept - Thu, 17 Sept
BWI
Baltimore
SAT
San Antonio
£279 Return, found 4 days ago
£279
Return
found 4 days ago
Select United flight, departing Tue, 15 Sept from Baltimore to San Antonio, returning Thu, 17 Sept, priced at £279 found 4 days ago
American Airlines
Sun, 13 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£293 Return, found 4 days ago
£293
Return
found 4 days ago
Select American Airlines flight, departing Sun, 13 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £293 found 4 days ago
American Airlines
Sun, 13 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£322 Return, found 4 days ago
£322
Return
found 4 days ago
Select American Airlines flight, departing Sun, 13 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £322 found 4 days ago
American Airlines
Sun, 13 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£327 Return, found 4 days ago
£327
Return
found 4 days ago
Select American Airlines flight, departing Sun, 13 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £327 found 4 days ago
American Airlines
Sun, 13 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£354 Return, found 4 days ago
£354
Return
found 4 days ago
Select American Airlines flight, departing Sun, 13 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £354 found 4 days ago
Delta
Sun, 13 Sept - Wed, 16 Sept
BWI
Baltimore
SAT
San Antonio
£356 Return, found 4 days ago
£356
Return
found 4 days ago
Select Delta flight, departing Sun, 13 Sept from Baltimore to San Antonio, returning Wed, 16 Sept, priced at £356 found 4 days ago
Southwest Airlines
Wed, 26 Aug - Wed, 2 Sept
BWI
Baltimore
SAT
San Antonio
£626 Return, found 3 days ago
£626
Return
found 3 days ago
Select Southwest Airlines flight, departing Wed, 26 Aug from Baltimore to San Antonio, returning Wed, 2 Sept, priced at £626 found 3 days ago
Alaska Airlines
Fri, 18 Jun - Fri, 25 Jun
BWI
Baltimore
SAT
San Antonio
£727 Return, found 6 days ago
£727
Return
found 6 days ago
Select Alaska Airlines flight, departing Fri, 18 Jun from Baltimore to San Antonio, returning Fri, 25 Jun, priced at £727 found 6 days ago

Find the cheapest month to fly from Baltimore (BWI) to San Antonio (SAT)

February is typically the cheapest month to fly

From £109 - £318 per traveller.

Frequently asked questions

How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) cost?
You can find one-way and return flights from BWI to SAT with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when BWI to SAT ticket fares go up or down.
What is the cheapest month to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
If you're looking for the cheapest time to fly from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT), August is typically your best bet. You can expect average return flight prices around £245 during this month. Other budget-friendly months for this route include May and September.
Which airlines fly direct from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
Only one airline offers direct flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT). Southwest Airlines operates 18 direct flights from BWI to SAT every week.
What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
Spirit Airlines offers one of the cheapest connecting return flights from BWI to SAT with a layover in Orlando Intl. (MCO), starting from around £106. Thurgood Marshall (BWI) to San Antonio Intl. (SAT), with tickets starting from around £175 for flights that can be booked for departure within the next year. Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Baltimore Washington Intl. These prices are for economy/coach class per adult. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
To find a cheap flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
The best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
The best time to fly from Baltimore Washington International Thurgood Marshall (BWI) to San Antonio International (SAT) is typically August or September. These months offer a great balance, with prices around £245 for a return flight. While these might be the cheapest months, you'll still find plenty of flight options to suit your schedule. This information is Giving you a good idea of what to expect.
How many flights per day from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
You'll find around 3 nonstop flights per day from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT). For even more choices, look at flights that include layovers, as there are approximately 72 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Seattle - Tacoma Intl. (SEA).
What is the earliest flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
The earliest flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT) typically departs around 5:00 AM. This service is operated by American Airlines. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
You'll typically find the most flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT) on a Friday, with around 69 flights available. This gives you a good selection of options for your journey. Major airlines on this route include Southwest Airlines, Delta, and American Airlines. Flight options are fairly consistent throughout the week, with Fridays offering slightly more choices compared to other days.
What are the most popular departure times for flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
The most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT) are in the early morning, from 6am to 9am. Many major carriers, including Southwest Airlines, United and Delta, offer flights during this window. Many travellers prefer these times to get an early start on their journey.
How long does it take to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
A direct flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT) typically takes around 3 hours 30 minutes, covering a distance of about 2,263 kilometers. If you opt for a flight with one stop, your journey will usually be longer, taking about 6 hours 20 minutes. Flights with two or more stops will add even more travel time, typically around 10 hours 20 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
Yes, you can fly business class or first class between BWI and SAT. Airlines that offer business class service on this route include:
  • Delta
  • Frontier Airlines
First class cabins are available on Alaska Airlines, Delta, Spirit Airlines, United, and American Airlines.
How do I earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) flight with Expedia?
It's easy to earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Antonio, TX (SAT) from Baltimore, MD (BWI)?
If you're planning to travel to San Antonio from Baltimore Washington Intl. Thurgood Marshall (BWI), you can fly directly into San Antonio Intl. (SAT). Some flights may connect through major hubs like O'Hare Intl. (ORD), Birmingham Intl. (BHM), or Louisville Intl. (SDF) before reaching San Antonio. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) at the last minute?
Typically, booking a last minute flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) flight and hotel package?
Securing a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.)?
If you booked your Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to San Antonio, TX (SAT-San Antonio Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

0
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
San Antonio Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
£212
Distance
2249 km

Book with confidence

Compare flights from Baltimore to San Antonio easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Baltimore to San Antonio. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Antonio Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Baltimore Washington Intl. Thurgood Marshall to San Antonio Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to San Antonio Intl. (SAT)

The easiest way to view the best deals on flights from Baltimore to San Antonio today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Baltimore Washington Intl. Thurgood Marshall to San Antonio Intl. start at just £213 and range up to £727.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Baltimore and San Antonio
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Baltimore to San Antonio flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Baltimore Washington Intl. Thurgood Marshall to San Antonio Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Baltimore to San Antonio easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.