SUMMER: Boston to San Diego (& vice versa) for only $222 roundtrip

All the information on this page is accurate at the time of publication.

If you are viewing this deal at a later date, the price and availability may no longer be as advertised.

Become a Secret Flying member to receive alerts to your inbox the moment we publish a flight deal.

Summer flights from Boston to San Diego for only $222 roundtrip with United Airlines.

Also works in reverse.

DEPART:
Boston, USA

ARRIVE:
San Diego, USA

RETURN:
Boston, USA

DATES:
Availability from August to October 2026

Example dates:

Boston – San Diego
18th-25th Aug
6th-14th Sep
6th-15th Sep
22nd-30th Sep
23rd-30th Sep
6th-14th Oct
7th-14th Oct
20th-27th Oct

San Diego – Boston
18th-25th Aug
5th-12th Sep
6th-15th Sep
22nd-30th Sep
23rd-30th Sep
26th Sep – 5th Oct
20th-27th Oct

and more…

STOPS:
Chicago

AIRLINES:
United Airlines