This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $158 fare is the cheapest current round-trip from Philadelphia (PHL) to HOU on Southwest flight WN3146, departing 2026-08-06 at 17:25 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.