This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $340 fare is the cheapest current round-trip from Seattle (SEA) to NYC on Alaska Airlines flight AS488, departing 2026-09-10 at 12:30 with return on 2026-09-12.

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