฿8,565 Cheap United flights from Boston to San Diego (BOS→SAN)

Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from BOS to SAN. Affordable one-way tickets from ฿8,565 are also available.*

*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the least expensive months to get away to San Diego with United Airlines. You could also find fantastic deals on one-way and round-trip fares in November.

Fill in your dates, press search and check the "Nonstop" filter on Expedia to browse any direct flights from BOS to SAN with United Airlines or other airlines.

Catch a United Airlines flight from Logan Intl. Airport (BOS) to San Diego, and you'll likely arrive at San Diego Intl. Airport (SAN). This is the airline's main hub in this destination.

Depending on the ticket type you purchased, a fee generally applies if you change or cancel your flight more than 24 hours after it has been confirmed. To find flexible fares, select our "Changes included" and "No cancel fee" boxes when searching for flights. For additional information on cancelling or modifying your reservation, head to "Trips," select your flight and tick "Manage Booking."