This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $411 fare is the cheapest current round-trip from San Diego (SAN) to MKE on American Airlines flight AA1543, departing 2026-07-19 at 22:45 with return on 2026-07-23.

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