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Cheap flights from Boston (BOS) to San Antonio (SAT)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
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How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)

How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)
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How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)
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How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)
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Cheap flights from Boston to San Antonio in December 2025 , January 2026

31 Dec - 07 Jan $ 309.00
BOS
Boston
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
BOS
Boston
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25 Dec - 08 Jan $ 1,060.00
BOS
Boston
Alaska Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Alaska Airlines
1 STOPS
BOS
Boston
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25 Dec - 04 Jan $ 1,918.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Hawaiian Airlines
1 STOPS
BOS
Boston
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Last minute flights from Boston to San Antonio

31 Dec - 01 Jan $ 457.00
BOS
Boston
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
BOS
Boston
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25 Dec - 31 Dec $ 636.00
BOS
Boston
United Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
United Airlines
1 STOPS
BOS
Boston
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24 Dec - 31 Dec $ 714.00
BOS
Boston
United Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
United Airlines
1 STOPS
BOS
Boston
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One-way flights to San Antonio from Boston

5:45 AM - 9:07 PM
Spirit Airlines
1 Stops
18h 41m
BOS - SAT
$ 188
Kiwi
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12:20 PM - 7:41 PM
United Airlines
1 Stops
11h 34m
BOS - SAT
$ 404
Kiwi
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7:25 AM - 12:00 PM
United Airlines
1 Stops
6h 46m
BOS - SAT
$ 661
Kiwi
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How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)

Related info for your journey
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How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.