This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $477 fare is the cheapest current round-trip from San Francisco (SFO) to GUA on Alaska Airlines flight AS212, departing 2026-05-20 at 13:56 with return on 2026-05-26.

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