New York (LGA) to San Francisco (SFO): 2,573 miles (4,141 km) great-circle, about 5h 40m nonstop by our estimate. Cheapest fare observed: $306 round-trip on Frontier, with 1 stop, departing June 17, 2026.
$306 round-trip, Frontier F92615, departing 2026-06-17 at 20:29, returning 2026-06-21. The recorded itinerary left on a Wednesday, returning on a Sunday 4 nights later; the fare was observed 53 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $306, it ranked 15th of the 30 round-trip fares we recorded from LGA (median $323). That is 11.9 cents per great-circle mile (round-trip price over one-way distance), below the LGA median of 17.6 cents across 30 round-trip routes.
Routes from LGA of similar length: Los Angeles (2,464 mi) at $235 and Las Vegas (2,237 mi) at $222.
Frontier had the cheapest fare on 7 of 30 LGA routes. It is the 15th longest of the 30 routes we track from LGA.
Of 19 departure airports with a fare to San Francisco, New York (LGA) ranked 14th at $306. Lowest: $126 from Los Angeles (LAX); highest: $483 from New York (JFK); 6 nonstop. Cheapest-fare airlines (routes): Frontier (13), Southwest (3), American Airlines (1), United Airlines (1) and WestJet (1).
The reverse, San Francisco (SFO) to New York (NYC), was $140 round-trip on Southwest, 1 stop, departing May 29, 2026. San Francisco to New York flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Los_Angeles; flight time is our estimate.