$78 Cheap Flights from San Antonio (SAT) to Baltimore (BWI)

View $78 flight on Wed, Aug 13, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $78 for one-way flights and $158 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Mon, Aug 4 - Thu, Aug 7
SAT
San Antonio
BWI
Baltimore
$158 Roundtrip, found 6 hours ago
$158
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Mon, Aug 4 from San Antonio to Baltimore, returning Thu, Aug 7, priced at $158 found 6 hours ago
Spirit Airlines
Thu, Jul 17 - Thu, Jul 31
SAT
San Antonio
BWI
Baltimore
$159 Roundtrip, found 1 day ago
$159
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Thu, Jul 17 from San Antonio to Baltimore, returning Thu, Jul 31, priced at $159 found 1 day ago
Southwest Airlines
Mon, Aug 4 - Thu, Aug 7
SAT
San Antonio
BWI
Baltimore
$162 Roundtrip, found 6 hours ago
$162
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Mon, Aug 4 from San Antonio to Baltimore, returning Thu, Aug 7, priced at $162 found 6 hours ago
Southwest Airlines
Fri, Aug 15 - Mon, Aug 18
SAT
San Antonio
BWI
Baltimore
$165 Roundtrip, found 5 hours ago
$165
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Fri, Aug 15 from San Antonio to Baltimore, returning Mon, Aug 18, priced at $165 found 5 hours ago
Southwest Airlines
Mon, Aug 4 - Thu, Aug 7
SAT
San Antonio
BWI
Baltimore
$167 Roundtrip, found 6 hours ago
$167
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Mon, Aug 4 from San Antonio to Baltimore, returning Thu, Aug 7, priced at $167 found 6 hours ago
American Airlines
Mon, Aug 4 - Thu, Aug 7
SAT
San Antonio
BWI
Baltimore
$168 Roundtrip, found 6 hours ago
$168
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Mon, Aug 4 from San Antonio to Baltimore, returning Thu, Aug 7, priced at $168 found 6 hours ago
Southwest Airlines
Mon, Aug 11 - Mon, Aug 18
SAT
San Antonio
BWI
Baltimore
$170 Roundtrip, found 2 days ago
$170
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Aug 11 from San Antonio to Baltimore, returning Mon, Aug 18, priced at $170 found 2 days ago
American Airlines
Fri, Aug 15 - Mon, Aug 18
SAT
San Antonio
BWI
Baltimore
$172 Roundtrip, found 5 hours ago
$172
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Fri, Aug 15 from San Antonio to Baltimore, returning Mon, Aug 18, priced at $172 found 5 hours ago
Frontier Airlines
Fri, Aug 15 - Mon, Aug 18
SAT
San Antonio
BWI
Baltimore
$173 Roundtrip, found 5 hours ago
$173
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Aug 15 from San Antonio to Baltimore, returning Mon, Aug 18, priced at $173 found 5 hours ago
Delta
Mon, Aug 4 - Thu, Aug 7
SAT
San Antonio
BWI
Baltimore
$193 Roundtrip, found 6 hours ago
$193
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Aug 4 from San Antonio to Baltimore, returning Thu, Aug 7, priced at $193 found 6 hours ago

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

May is typically the cheapest month to fly

From $104 - $200 per traveler.

Graph displaying average flight prices per month

Flights from San Antonio (SAT) to Baltimore (BWI)
Origin airport
San Antonio Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$157
Distance
1405 mi
Average flight time
4 hours 53 mins

San Antonio to Baltimore Flights

The cheapest times to fly from San Antonio to Baltimore

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Antonio to Baltimore are during the month of August. You can find some of the cheapest flights from San Antonio to Baltimore with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to Baltimore

Sunday is one of the best days to book for cheap flights from San Antonio to Baltimore: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Antonio to Baltimore

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Antonio to Baltimore in 2025. You can also book with separate airlines for your outbound and return journeys, from $78 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Antonio to Baltimore flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Antonio to Baltimore airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) cost?
You can book cheap return flights starting from $155 from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving SAT on July 28 2025 and touching down at BWI. The price was last updated on July 3 2025 and has not changed since.
What is the cheapest month to fly from SAT to BWI?
The cheapest flights from SAT to BWI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Take a direct flight with Southwest Airlines and go straight from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI).
What is the cheapest airline that flies from SAT to BWI?
Currently, the cheapest airline operating one-way flights from SAT to BWI is Spirit Airlines. You can jet off on this route from $110. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAT on July 7 2025. Prices were last updated on July 3 2025 and have not changed since.
How many flights per day from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
On average, you'll only find 1 nonstop flight departing from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) every day. If this isn't convenient for you, consider flights with layovers. Just customize your search on Expedia to include one or two stops to find a better alternative.
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The 6 AM departures from SAT to BWI are the busiest. They can also be more expensive. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from SAT to BWI?
Friday has the most flights from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Consider leaving on this day and you'll have the best chance of finding a departure that fits your schedule.
What is the earliest flight from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The earliest flight departing from San Antonio Intl. Airport (SAT) is at around 6:05AM UTC-6. Board this flight and you'll reach Baltimore Washington Intl. Thurgood Marshall Airport (BWI) at approximately 10:15AM UTC-5. The overall travel time is 3h 10m.
How long does it take to fly from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The average flight duration from SAT to BWI is 3 hours and 9 minutes, covering a distance of 1,400 mi.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
To arrive at Baltimore Washington Intl. Thurgood Marshall Airport (BWI) on time, choose a flight that takes off from San Antonio Intl. Airport (SAT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Baltimore from San Antonio Intl. Airport (SAT)?
If you're traveling on a direct flight from San Antonio Intl. Airport (SAT) to Baltimore, you'll land at either Washington Dulles Intl. Airport (IAD) or Baltimore Washington Intl. Thurgood Marshall Airport (BWI).
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) last-minute?
Last-minute bookings from SAT to BWI are generally more expensive. To lock in the best prices, start searching for flights well in advance. That being said, if you're flexible with your travel plans, you may score a cheap ticket right before your journey.
Is it cheaper to book a SAT to BWI flight and hotel package?
You'll typically save money by securing a SAT to BWI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
You can usually cancel or reschedule your SAT to BWI flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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