This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $159 fare is the cheapest current round-trip from Boston (BOS) to PBI on Southwest flight WN857, departing 2026-08-08 at 05:50 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.