New York (LGA) to San Juan (SJU): 1,612 miles (2,595 km) great-circle, about 3h 45m nonstop by our estimate. Cheapest fare observed: $184 round-trip on Frontier, with 1 stop, departing May 15, 2026.
$184 round-trip, Frontier F92615, departing 2026-05-15 at 20:15, returning 2026-05-23. The recorded itinerary left on a Friday, returning on a Saturday 8 nights later; the fare was observed 20 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $184, it ranked 6th of the 30 round-trip fares we recorded from LGA (median $323). That is 11.4 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: Punta Cana (1,569 mi) at $347 and Santo Domingo (1,564 mi) at $287.
Frontier had the cheapest fare on 7 of 30 LGA routes. It is the 19th longest of the 30 routes we track from LGA.
Of 20 departure airports with a fare to San Juan, New York (LGA) ranked 7th at $184. Lowest: $127 from Orlando (MCO); highest: $632 from Washington DC (IAD); 7 nonstop. Cheapest-fare airlines (routes): Frontier (9), Spirit (4), American Airlines (2), JetBlue (2), Southwest (1) and United Airlines (1), plus 1 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Puerto_Rico; flight time is our estimate.