This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $386 fare is the cheapest current round-trip from New York (LGA) to SEA on Southwest flight WN561, departing 2026-08-21 at 06:30 with return on 2026-08-25.

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