New York (LGA) to Santiago de los Caballeros (STI): 1,489 miles (2,397 km) great-circle, about 3h 30m nonstop by our estimate. Cheapest fare observed: $253 round-trip on Spirit, with 1 stop, departing May 8, 2026.
$253 round-trip, Spirit NK1791, departing 2026-05-08 at 10:59, returning 2026-05-29. The recorded itinerary left on a Friday, returning on a Friday 21 nights later; the fare was observed 13 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $253, it ranked 11th of the 30 round-trip fares we recorded from LGA (median $323). That is 17.0 cents per great-circle mile (round-trip price over one-way distance), close to the LGA median of 17.6 cents across 30 round-trip routes.
Routes from LGA of similar length: Houston (1,426 mi) at $258 and Santo Domingo (1,564 mi) at $287.
Spirit had the cheapest fare on 6 of 30 LGA routes. It is the 22nd longest of the 30 routes we track from LGA.
Of 7 departure airports with a fare to Santiago de los Caballeros, New York (LGA) ranked 2nd at $253. Lowest: $245 from New York (JFK); highest: $364 from Orlando (MCO); 4 nonstop. Cheapest-fare airlines (routes): Spirit (3), JetBlue (2), American Airlines (1) and Frontier (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Santo_Domingo; flight time is our estimate.