This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $707 fare is the cheapest current round-trip from Chicago (MDW) to SAT on Southwest flight WN2570, departing 2026-06-12 at 10:35 with return on 2026-06-14.

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