$70 Cheap Flights from San Antonio (SAT) to Baltimore (BWI)

View $70 flight on Mon, Nov 17, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $70 for one-way flights and $129 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Dec 11 - Sat, Jan 10
SAT
San Antonio
BWI
Baltimore
$129 Roundtrip, found 3 days ago
$129
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Thu, Dec 11 from San Antonio to Baltimore, returning Sat, Jan 10, priced at $129 found 3 days ago
Frontier Airlines
Sun, Dec 14 - Sat, Jan 10
SAT
San Antonio
BWI
Baltimore
$142 Roundtrip, found 3 days ago
$142
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Dec 14 from San Antonio to Baltimore, returning Sat, Jan 10, priced at $142 found 3 days ago
Frontier Airlines
Fri, Dec 12 - Sat, Jan 10
SAT
San Antonio
BWI
Baltimore
$143 Roundtrip, found 3 days ago
$143
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Dec 12 from San Antonio to Baltimore, returning Sat, Jan 10, priced at $143 found 3 days ago
Frontier Airlines
Sun, Dec 7 - Fri, Dec 12
SAT
San Antonio
BWI
Baltimore
$151 Roundtrip, found 3 days ago
$151
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Dec 7 from San Antonio to Baltimore, returning Fri, Dec 12, priced at $151 found 3 days ago
Spirit Airlines
Sat, Nov 15 - Tue, Nov 18
SAT
San Antonio
BWI
Baltimore
$156 Roundtrip, found 4 days ago
$156
Roundtrip
found 4 days ago
Select Spirit Airlines flight, departing Sat, Nov 15 from San Antonio to Baltimore, returning Tue, Nov 18, priced at $156 found 4 days ago
Spirit Airlines
Sat, Nov 15 - Mon, Nov 17
SAT
San Antonio
BWI
Baltimore
$157 Roundtrip, found 3 hours ago
$157
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Sat, Nov 15 from San Antonio to Baltimore, returning Mon, Nov 17, priced at $157 found 3 hours ago
Spirit Airlines
Mon, Dec 15 - Sat, Jan 10
SAT
San Antonio
BWI
Baltimore
$161 Roundtrip, found 3 days ago
$161
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Mon, Dec 15 from San Antonio to Baltimore, returning Sat, Jan 10, priced at $161 found 3 days ago
Delta
Wed, Jan 7 - Mon, Jan 12
SAT
San Antonio
BWI
Baltimore
$184 Roundtrip, found 1 day ago
$184
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 7 from San Antonio to Baltimore, returning Mon, Jan 12, priced at $184 found 1 day ago
Southwest Airlines
Thu, Dec 11 - Sun, Dec 14
SAT
San Antonio
BWI
Baltimore
$192 Roundtrip, found 6 hours ago
$192
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Thu, Dec 11 from San Antonio to Baltimore, returning Sun, Dec 14, priced at $192 found 6 hours ago
American Airlines
Mon, Jan 19 - Fri, Jan 23
SAT
San Antonio
BWI
Baltimore
$193 Roundtrip, found 3 hours ago
$193
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Mon, Jan 19 from San Antonio to Baltimore, returning Fri, Jan 23, priced at $193 found 3 hours ago

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

May is typically the cheapest month to fly

From $107 - $480 per traveler.

Alternative airports near Baltimore

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Average driving time to city center is 57 minutes. Flights from $602
DCA
Ronald Reagan Washington National
Average driving time to city center57 min
Flights from $602
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, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$129
Distance
1405 mi
Average flight time
4 hours 10 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 December. 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 $70 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?
Grab a cheap one-way flight from $70 or cheap return flight from $129 from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
December is the cheapest month to fly from SAT to BWI. Planning your trip for the off-season is often the key to finding better fares.
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 San Antonio Intl. Airport (SAT) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SAT to BWI flight.
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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*Available to One Key members.