Flights San Francisco → New York — September 18, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Friday, September 18, 2026 on the San Francisco–New York route: 1 stop itinerary (2 flights) via Atlanta Hartsfield-Jackson (ATL), from San Francisco International (SFO) to New York LaGuardia (LGA), first flight Frontier Airlines F91448, departs 10:05 PM, arrives 4:00 PM the next day, total travel time 14h 55m including layovers, flight time 6h 56m (layovers excluded), $235 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 7, 2026 and read by AirSource on September 10, 2026, 19:03 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Alaska Airlines AS40, from San Francisco International (SFO) to New York JFK (JFK), departs 10:33 PM, arrives 7:19 AM the next day, direct, 5h 46m, $279 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes allowed for a fee, non-refundable.