Flights New York → San Francisco — September 18, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Friday, September 18, 2026 on the New York–San Francisco route: 2 stops itinerary (3 flights) via Atlanta Hartsfield-Jackson (ATL) and Las Vegas Harry Reid (LAS), from Newark Liberty (EWR) to San Francisco International (SFO), first flight Frontier Airlines F91157, departs 10:29 PM, arrives 6:24 PM the next day, total travel time 22h 55m including layovers, flight time 8h 53m (layovers excluded), $280 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 8, 2026 and read by AirSource on September 10, 2026, 19:00 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Alaska Airlines AS27, from New York JFK (JFK) to San Francisco International (SFO), departs 4:46 PM, arrives 8:02 PM, direct, 6h 16m, $316 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.