This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $157 fare is the cheapest current round-trip from Boston (BOS) to CHI on American Airlines flight AA3324, departing 2026-06-15 at 05:05 with return on 2026-06-30.

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