This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $694 fare is the cheapest current round-trip from San Diego (SAN) to BOS on Alaska Airlines flight AS255, departing 2026-08-06 at 20:52 with return on 2026-08-11.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.