Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

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)
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.
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.

Cheap flights from Boston to San Antonio in January , February 2026

30 Jan - 15 Feb $ 247.00
BOS
Boston
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
BOS
Boston
Pick dates
22 Jan - 07 Feb $ 919.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
20 Jan - 07 Feb $ 936.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates

Last minute flights from Boston to San Antonio

27 Jan - 31 Jan $ 325.00
BOS
Boston
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
BOS
Boston
Pick dates
22 Jan - 01 Feb $ 1,133.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
22 Jan - 01 Feb $ 1,134.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates

One-way flights to San Antonio from Boston

3:43 PM - 9:43 PM
Spirit Airlines
1 Stops
9h 9m
BOS - SAT
$ 171
Kiwi
Pick dates
7:00 AM - 9:43 PM
Spirit Airlines
1 Stops
17h 52m
BOS - SAT
$ 313
Kiwi
Pick dates
5:45 AM - 8:15 AM
United Airlines
1 Stops
6h 34m
BOS - SAT
$ 459
Kiwi
Pick dates

How to find the cheapest flight from Boston (BOS) to San Antonio (SAT)

Related info for your journey
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.
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.