HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$47+ 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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SAT
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Baltimore/Washington to San Antonio are usually found in August or September, booked 33 days in advance, depart on a Friday or Thursday and return on a Tuesday

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 November 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Wed 12/178:00 amBWI - SAT
2 stops52h 21mFrontier
Wed 12/245:56 pmSAT - BWI
1 stop5h 33mFrontier
Deal found 11/12$132
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Fri 11/215:40 amBWI - SAT
1 stop11h 28mFrontier
Sun 11/237:39 pmSAT - BWI
1 stop11h 44mFrontier
Deal found 11/12$134
This Frontier deal was found by Cheapflights users on 11/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:55 amBWI - SAT
1 stop11h 56mFrontier
Fri 12/125:46 pmSAT - BWI
1 stop5h 46mFrontier
Deal found 11/12$138
This Frontier deal was found by Cheapflights users on 11/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:45 amBWI - SAT
1 stop12h 06mFrontier
Fri 12/195:56 pmSAT - BWI
1 stop5h 33mFrontier
Deal found 11/11$141
This Frontier deal was found by Cheapflights users on 11/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:55 amBWI - SAT
1 stop11h 56mFrontier
Thu 12/119:10 amSAT - BWI
1 stop10h 06mFrontier
Deal found 11/12$142
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 11/206:29 pmBWI - SAT
1 stop22h 39mMultiple Airlines
Mon 11/245:07 pmSAT - BWI
1 stop5h 51mMultiple Airlines
Deal found 11/12$151
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 11/206:29 pmBWI - SAT
1 stop22h 39mMultiple Airlines
Tue 12/27:37 pmSAT - BWI
2 stops36h 07mMultiple Airlines
Deal found 11/12$154
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/181:27 pmBWI - SAT
2 stops22h 54mFrontier
Wed 12/245:56 pmSAT - BWI
1 stop5h 33mFrontier
Deal found 11/12$156
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/181:27 pmBWI - SAT
2 stops22h 54mFrontier
Mon 12/225:56 pmSAT - BWI
1 stop5h 44mFrontier
Deal found 11/12$160
This Super.com deal was found by Cheapflights users on 11/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:45 amBWI - SAT
1 stop11h 14mSpirit Airlines
Sun 11/233:23 pmSAT - BWI
1 stop8h 24mSpirit Airlines
Deal found 11/12$161
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 11/228:45 pmBWI - SAT
1 stop22h 59mMultiple Airlines
Mon 12/15:07 pmSAT - BWI
1 stop15h 24mMultiple Airlines
Deal found 11/12$162

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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$132
(Kiwi.com)

One-way from

$47
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$538
Provider with most accurate pricing for Baltimore/Washington-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-San Antonio flights.
Search Deals
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. 16% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 13, 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

Thu 1/8

5:25 pm-9:40 am

1 stop17h 15m

San Antonio

Sun 1/11

7:14 pm-12:07 pm

1 stop15h 53m

$154

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 2/20

6:00 am-4:43 pm

1 stop11h 43m

San Antonio

Sun 2/22

3:02 pm-7:47 am

1 stop15h 45m

$207

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 12/4

4:38 pm-11:26 pm

1 stop7h 48m

San Antonio

Wed 12/10

7:00 am-10:55 am

2 stops26h 55m

$221

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 2/27

4:30 pm-11:53 pm

1 stop8h 23m

San Antonio

Sun 3/1

10:13 am-7:47 am

2 stops20h 34m

$225

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Sun 1/11

8:42 am-6:39 pm

1 stop10h 57m

San Antonio

Fri 1/16

5:38 pm-12:26 am

1 stop5h 48m

$230

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 2/19

7:01 pm-12:36 am

1 stop6h 35m

San Antonio

Mon 2/23

4:00 pm-10:55 pm

1 stop5h 55m

$297

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Tue 3/10

4:30 pm-11:53 pm

1 stop8h 23m

San Antonio

Wed 3/11

6:00 am-11:17 pm

1 stop16h 17m

$316

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 1/9

11:30 am-9:40 am

2 stops23h 10m

San Antonio

Sun 1/11

10:35 am-11:17 am

3 stops23h 42m

$332

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Tue 12/9

1:10 pm-10:59 pm

2 stops10h 49m

San Antonio

Wed 12/10

2:12 pm-9:08 pm

1 stop5h 56m

$344

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Tue 12/9

10:10 am-1:05 pm

Nonstop3h 55m

San Antonio

Wed 12/10

4:20 pm-10:30 pm

1 stop5h 10m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Baltimore to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to San Antonio in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-San Antonio flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Baltimore-San Antonio flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Baltimore-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-San Antonio flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 November 7, 2025.

To ensure you get the cheapest price possible for a flight from Baltimore to San Antonio, you should look to book at least 33 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, July is the cheapest month in which you can book a flight from Baltimore to San Antonio (average of $94). Flying from Baltimore to San Antonio in December is currently the most expensive (average of $177). 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 November 13, 2025.

It’s typically best to fly out from Baltimore to San Antonio in the morning. Doing so could potentially save you 33% 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 November 2, 2025.

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

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

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 November 13, 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

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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
7.9
Good
8,007 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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
9,017 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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
11,051 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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
8,139 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

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 45m 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 Frontier fly from Baltimore to San Antonio in about 11h 43m. The time it takes to get you to your destination can typically vary by up to . There are 1405 mi between Baltimore and San Antonio.

  • 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 $156. On average you can expect to pay $445. The most popular route, (Baltimore/Washington - San Antonio), can usually be booked for $150.

  • 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, July is the cheapest month in which you can book a flight from Baltimore to San Antonio (average of $94). Flying from Baltimore to San Antonio in December is currently the most expensive (average of $177). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Reagan-National to Dallas/Fort Worth flights
Philadelphia to Dallas/Fort Worth flights
Dulles Intl to Hobby flights
Reagan-National to Hobby flights
Dulles Intl to George Bush Intcntl flights
Baltimore to Hobby flights
Reagan-National to George Bush Intcntl flights
Philadelphia to Hobby flights
Dulles Intl to Austin flights
Baltimore to George Bush Intcntl flights
Philadelphia to George Bush Intcntl flights
Philadelphia to Love Field flights
Baltimore to Austin flights
Reagan-National to Austin flights
Baltimore to Love Field flights
Dulles Intl to San Antonio flights
Dulles Intl to Love Field flights
Reagan-National to Love Field flights
Reagan-National to San Antonio flights
Philadelphia to Austin flights
Philadelphia to San Antonio flights
Dulles Intl to El Paso flights
Reagan-National to El Paso flights
Baltimore to El Paso flights
Philadelphia to El Paso flights
Philadelphia to McAllen flights
Dulles Intl to Lubbock flights
Dulles Intl to Brownsville flights
Baltimore to Lubbock flights
Reagan-National to Lubbock flights
Dulles Intl to Midland flights
Baltimore to Brownsville flights
Philadelphia to Corpus Christi flights
Baltimore to Corpus Christi flights
Philadelphia to Midland flights
Reagan-National to Midland flights
Reagan-National to Brownsville flights
Reagan-National to Texarkana flights
Baltimore to Midland flights
Dulles Intl to Corpus Christi flights
Philadelphia to Lubbock flights
Baltimore to Abilene flights
Baltimore to McAllen flights
Baltimore to Harlingen flights
Dulles Intl to Abilene flights
Dulles Intl to Laredo flights
Dulles Intl to Texarkana flights

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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$228FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$114Average$224FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$344FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$395FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$240Average$359FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$280Average$470FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.