This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $563 fare is the cheapest current round-trip from Washington DC (IAD) to SAN on Alaska Airlines flight AS375, departing 2026-04-28 at 09:00 with return on 2026-05-01.

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