This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $1255 fare is the cheapest current round-trip from Boston (BOS) to BAK on Aer Lingus flight EI134, departing 2026-05-19 at 18:30 with return on 2026-06-25.

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