Earn point on your loyalty program!arrow arc left

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

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 Diego (SAN)

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.
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.

Cheap flights from Boston to San Diego in May , June 2026

31 May - 16 Jun $ 307.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
18 May - 15 Jun $ 452.00
BOS
Boston
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
BOS
Boston
Pick dates
27 May - 06 Jun $ 494.00
BOS
Boston
JetBlue Airways
DIRECT
SAN
San Diego
SAN
San Diego
JetBlue Airways
DIRECT
BOS
Boston
Pick dates

Last minute flights from Boston to San Diego

31 May - 31 May $ 487.00
BOS
Boston
Alaska Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
26 May - 01 Jun $ 494.00
BOS
Boston
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
BOS
Boston
Pick dates
26 May - 31 May $ 656.00
BOS
Boston
JetBlue Airways
DIRECT
SAN
San Diego
SAN
San Diego
JetBlue Airways
DIRECT
BOS
Boston
Pick dates

One-way flights to San Diego from Boston

8:05 AM - 8:05 AM
Alaska Airlines
0 Stops
6h 27m
BOS - SAN
$ 174
Kiwi
Pick dates
5:45 AM - 8:26 AM
United Airlines
1 Stops
8h 4m
BOS - SAN
$ 207
Kiwi
Pick dates
6:37 AM - 6:37 AM
JetBlue Airways
0 Stops
6h 15m
BOS - SAN
$ 331
Kiwi
Pick dates

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

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 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.