Earn point on your loyalty program!arrow arc left

Cheap flights from Seattle (BFI) 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 Seattle (BFI) to San Antonio (SAT)

How to find the cheapest flight from Seattle (BFI) 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 Seattle (BFI) 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 Seattle (BFI) 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 Seattle to San Antonio in September , October 2026

27 Sep - 29 Oct $ 1,055.00
BFI
Seattle
Air Excursions
3 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
29 Sep - 07 Oct $ 4,801.00
BFI
Seattle
Air Excursions
2 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
29 Sep - 07 Oct $ 4,877.00
BFI
Seattle
Air Excursions
2 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
2 STOPS
BFI
Seattle
Pick dates

Last minute flights from Seattle to San Antonio

27 Sep - 01 Oct $ 1,421.00
BFI
Seattle
Air Excursions
3 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
27 Sep - 01 Oct $ 1,449.00
BFI
Seattle
Air Excursions
3 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
27 Sep - 01 Oct $ 1,528.00
BFI
Seattle
Air Excursions
3 STOPS
SAT
San Antonio
SAT
San Antonio
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

One-way flights to San Antonio from Seattle

8:15 AM - 7:09 AM
Frontier Airlines
3 Stops
22h 55m
BFI - SAT
$ 711
Kiwi
Pick dates
5:25 AM - 6:59 PM
Alaska Airlines
2 Stops
16h 34m
BFI - SAT
$ 2,425
Kiwi
Pick dates
8:05 AM - 6:59 PM
Alaska Airlines
2 Stops
13h 54m
BFI - SAT
$ 2,500
Kiwi
Pick dates

How to find the cheapest flight from Seattle (BFI) 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 Seattle (BFI) 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 Seattle (BFI) to San Antonio (SAT)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.