Cheap Flights from Boston to San Diego

View €89 flight on Sat, 13 Sep 2025Opens in a new window

Popular airlines from Boston to San Diego

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

Prices were available within the past 7 days and start at €89 for one-way flights and €175 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
CLD
Carlsbad
€175 Return, found 1 day ago
€175
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 Aug from Boston to Carlsbad, returning Sat, 6 Sep, priced at €175 found 1 day ago
American Airlines
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SAN
San Diego
€175 Return, found 1 day ago
€175
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 Aug from Boston to San Diego, returning Sat, 6 Sep, priced at €175 found 1 day ago
JetBlue Airways
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SAN
San Diego
€203 Return, found 1 day ago
€203
Return
found 1 day ago
Select JetBlue Airways flight, departing Sat, 30 Aug from Boston to San Diego, returning Sat, 6 Sep, priced at €203 found 1 day ago
Delta
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SAN
San Diego
€203 Return, found 1 day ago
€203
Return
found 1 day ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Diego, returning Sat, 6 Sep, priced at €203 found 1 day ago
United
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SAN
San Diego
€241 Return, found 1 day ago
€241
Return
found 1 day ago
Select United flight, departing Sat, 30 Aug from Boston to San Diego, returning Sat, 6 Sep, priced at €241 found 1 day ago
Breeze Airways
Fri, 1 Aug - Tue, 5 Aug
PVD
Providence
SAN
San Diego
€289 Return, found 1 day ago
€289
Return
found 1 day ago
Select Breeze Airways flight, departing Fri, 1 Aug from Providence to San Diego, returning Tue, 5 Aug, priced at €289 found 1 day ago

Find the cheapest month to fly from Boston (BOS) to San Diego (SAN)

September is typically the cheapest month to fly

From €119 - €227 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.