This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $134 fare is the cheapest current round-trip from Chicago (MDW) to PHL on Southwest flight WN2718, departing 2026-09-01 at 14:15 with return on 2026-09-02.

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