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Cheap flights from Boston (BOS) to San Diego (SAN)

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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 Diego (SAN)

How to find the cheapest flight from Boston (BOS) to San Diego (SAN)
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How to find the cheapest flight from Boston (BOS) to San Diego (SAN)
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How to find the cheapest flight from Boston (BOS) to San Diego (SAN)
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Cheap flights from Boston to San Diego in January , February 2026

28 Jan - 03 Feb $ 237.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
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22 Jan - 10 Feb $ 334.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
21 Jan - 10 Feb $ 334.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
Pick dates

Last minute flights from Boston to San Diego

27 Jan - 31 Jan $ 351.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
BOS
Boston
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18 Jan - 31 Jan $ 447.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
BOS
Boston
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21 Jan - 31 Jan $ 482.00
BOS
Boston
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
BOS
Boston
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One-way flights to San Diego from Boston

4:20 PM - 4:20 PM
Alaska Airlines
0 Stops
6h 40m
BOS - SAN
$ 135
Kiwi
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4:20 PM - 4:20 PM
Alaska Airlines
0 Stops
6h 40m
BOS - SAN
$ 230
Kiwi
Pick dates
4:20 PM - 4:20 PM
Alaska Airlines
0 Stops
6h 40m
BOS - SAN
$ 230
Kiwi
Pick dates

How to find the cheapest flight from Boston (BOS) to San Diego (SAN)

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