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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 December 2025 , January 2026

19 Dec - 21 Jan $ 473.00
BOS
Boston
Hawaiian Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Hawaiian Airlines
DIRECT
BOS
Boston
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21 Dec - 05 Jan $ 507.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
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22 Dec - 08 Jan $ 533.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
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Last minute flights from Boston to San Diego

23 Dec - 31 Dec $ 590.00
BOS
Boston
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
BOS
Boston
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22 Dec - 31 Dec $ 632.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
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22 Dec - 31 Dec $ 663.00
BOS
Boston
Hawaiian Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Hawaiian Airlines
DIRECT
BOS
Boston
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One-way flights to San Diego from Boston

1:06 PM - 6:35 PM
United Airlines
1 Stops
10h 10m
BOS - SAN
$ 347
Kiwi
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6:30 AM - 6:30 AM
Alaska Airlines
0 Stops
6h 30m
BOS - SAN
$ 349
Kiwi
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6:30 AM - 6:30 AM
Hawaiian Airlines
0 Stops
6h 30m
BOS - SAN
$ 370
Kiwi
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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.