This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $254 fare is the cheapest current round-trip from Phoenix (PHX) to SFO on Southwest flight WN4101, departing 2026-06-30 at 21:30 with return on 2026-07-05.

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