This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $309 fare is the cheapest current round-trip from San Francisco (SFO) to NYC on Frontier flight F91448, departing 2026-09-14 at 22:05 with return on 2026-09-17.

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