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$79+ Cheap flights from Baltimore to San Antonio (BWI - SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SAT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to San Antonio are usually found in August or January, booked 45 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Baltimore to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$143
(Mytrip)

One-way from

$79
(Priceline)

Popular in

December

Cheapest in

August

Average price

$331
From Baltimore/Washington to San Antonio
Search Deals
One-way flight from Baltimore/Washington to San Antonio
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Baltimore to San Antonio

Cheapest flights from Baltimore to San Antonio
Explore the most affordable flight options available from Baltimore to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:22 amBWI - SAT
1 stop11h 13mFrontier
Mon 10/65:40 pmSAT - BWI
1 stop6h 13mFrontier
Deal found 9/14$143
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:22 amBWI - SAT
1 stop11h 08mFrontier
Thu 10/211:33 amSAT - BWI
1 stop6h 37mFrontier
Deal found 9/15$144
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:22 amBWI - SAT
1 stop11h 08mFrontier
Mon 10/65:40 pmSAT - BWI
1 stop6h 13mFrontier
Deal found 9/16$152
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:16 amBWI - SAT
1 stop13h 36mMultiple Airlines
Thu 9/2511:33 amSAT - BWI
1 stop6h 37mMultiple Airlines
Deal found 9/14$156
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:29 pmBWI - SAT
1 stop6h 46mFrontier
Mon 10/275:45 pmSAT - BWI
1 stop5h 28mFrontier
Deal found 9/15$157
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:27 pmBWI - SAT
1 stop21h 00mFrontier
Sun 10/58:20 pmSAT - BWI
1 stop20h 22mFrontier
Deal found 9/16$160
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:14 pmBWI - SAT
1 stop21h 21mFrontier
Mon 10/65:40 pmSAT - BWI
1 stop6h 13mFrontier
Deal found 9/16$164
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:11 pmBWI - SAT
1 stop20h 59mFrontier
Fri 11/75:35 pmSAT - BWI
1 stop5h 38mFrontier
Deal found 9/16$166
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:27 pmBWI - SAT
1 stop25h 48mFrontier
Thu 10/211:33 amSAT - BWI
1 stop6h 37mFrontier
Deal found 9/14$167
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:17 pmBWI - SAT
1 stop23h 20mFrontier
Mon 10/137:15 pmSAT - BWI
1 stop14h 05mFrontier
Deal found 9/15$175

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Baltimore to San Antonio that are best for you.

Fly from

Baltimore

Fly to

San Antonio

Route

Depart

Return

Price

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Mon 11/24

10:47 am-4:02 pm

1 stop6h 15m

San Antonio

Fri 11/28

5:15 am-12:46 pm

1 stop6h 31m

$237

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Tue 10/7

7:50 am-11:40 pm

1 stop16h 50m

San Antonio

Fri 10/10

7:35 pm-12:40 pm

2 stops16h 05m

$258

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 10/17

9:42 pm-4:37 pm

2 stops19h 55m

San Antonio

Mon 10/20

7:35 pm-11:01 am

1 stop14h 26m

$295

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Mon 11/24

6:16 pm-10:56 pm

1 stop5h 40m

San Antonio

Thu 11/27

5:30 am-5:14 pm

2 stops10h 44m

$304

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Wed 10/15

6:00 am-10:20 am

1 stop5h 20m

San Antonio

Wed 10/15

3:02 pm-11:34 pm

1 stop7h 32m

$357

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 11/21

6:16 pm-10:56 pm

1 stop5h 40m

San Antonio

Sun 11/23

4:24 pm-10:41 pm

1 stop5h 17m

$359

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 10/9

6:53 am-6:30 pm

2 stops12h 37m

San Antonio

Thu 10/9

7:35 pm-12:40 pm

2 stops16h 05m

$366

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 10/30

8:10 am-10:50 am

Nonstop3h 40m

San Antonio

Mon 11/3

3:05 pm-7:15 pm

Nonstop3h 10m

$377

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Wed 11/5

6:15 pm-9:10 pm

Nonstop3h 55m

San Antonio

Sat 11/8

5:30 am-9:40 am

Nonstop3h 10m

$377

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Wed 11/12

6:15 pm-9:10 pm

Nonstop3h 55m

San Antonio

Wed 11/19

3:05 pm-7:15 pm

Nonstop3h 10m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
1
2
3

The best insider tips for Baltimore to San Antonio flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to San Antonio trip
Airports
BWI

For early morning flights, arrive 20-30 minutes early due to busy security lines from 6-8 a.m. on weekdays.

Read more about BWIby Emily Zemler
SAT

Use rideshare services from SAT's lower level of Terminal A for convenient city access.

Read more about SATby Ramsey Qubein
Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on SAT

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Baltimore to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to San Antonio

How far ahead should I book a flight from Baltimore to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to San Antonio. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Baltimore to San Antonio, you should look to book at least 45 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Baltimore to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Baltimore to San Antonio (average of $295). Flying from Baltimore to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to SAT?

Find hourly flight availability from Baltimore to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s typically best to fly out from Baltimore to San Antonio in the morning. Doing so could potentially save you 32% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to San Antonio. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Baltimore to San Antonio flight should consider departing on Friday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Baltimore to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Baltimore to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Baltimore to San Antonio?

    Booking a flight from Baltimore/Washington (BWI) to San Antonio (SAT) is your only option if you wish to fly from Baltimore to San Antonio. On a typical day, there is 1 flight from Baltimore/Washington to San Antonio, all of which are around 3h 35m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Baltimore/Washington to San Antonio.

  • How popular is this Baltimore to San Antonio flight route?

    Flights from Baltimore/Washington to San Antonio have been viewed 4 times in the past calendar month.

  • How long is the flight from Baltimore to San Antonio?

    Airlines like Delta, Spirit Airlines, and United Airlines fly from Baltimore to San Antonio in about 5h 40m. The time it takes to get you to your destination can typically vary by up to 11h 10m. There are 1405 mi between Baltimore and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Baltimore to San Antonio round-trip?

    Our cheapest airline available from Baltimore to San Antonio is Frontier. Our recent data shows that you can find tickets from as low as $86 on this airline. Additional options worth looking into are Spirit Airlines and American Airlines, starting at $114 and $158 round-trip. You may be able to fly from Baltimore to San Antonio for 77% less than the average price by searching for these airlines.

  • What are the cheapest flights from Baltimore to San Antonio?

    The cheapest flight price from Baltimore to San Antonio is $250. On average you can expect to pay $437. The most popular route, (Baltimore/Washington - San Antonio), can usually be booked for $167.

  • Can I find deals for flights from Baltimore to San Antonio that include hotel bookings?

    Yes. In addition to deals on Baltimore to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to San Antonio.

  • Can I find deals for business class flights from Baltimore to San Antonio?

    Yes. Cheapflights offers flight deals from Baltimore to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Baltimore to San Antonio (average of $295). Flying from Baltimore to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Alternative routes for Baltimore to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Baltimore to San Antonio

Discover the top 6 airlines that operate flights from Baltimore to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$238FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$114Average$234FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$357FlexibilityNo cancel feeOn-time71%
DeltaCheapest$238Average$409FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$240Average$355FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$264Average$464FlexibilityNo cancel feeOn-time63%

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