New York (LGA) to London (LON): 3,440 miles (5,536 km) great-circle, about 7h 25m nonstop by our estimate. Cheapest fare observed: $737 round-trip on Lufthansa, with 2 stops, departing May 24, 2026.
$737 round-trip, Lufthansa LH6815, departing 2026-05-24 at 17:40, returning 2026-05-31. The recorded itinerary left on a Sunday, returning on a Sunday 7 nights later; the fare was observed 29 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $737, it ranked 19th of the 30 round-trip fares we recorded from LGA (median $323). That is 21.4 cents per great-circle mile (round-trip price over one-way distance), above the LGA median of 17.6 cents across 30 round-trip routes.
Routes from LGA of similar length: Paris (3,623 mi) at $637 and Barcelona (3,822 mi) at $751.
LGA to LON is the only one of 30 LGA routes where Lufthansa priced cheapest. It is the 13th longest of the 30 routes we track from LGA.
Of 49 departure airports with a fare to London, New York (LGA) ranked 26th at $737. Lowest: $46 from Dublin (DUB); highest: $1356 from Sydney (SYD); 14 nonstop. Cheapest-fare airlines (routes): Ryanair (7), easyJet (4), Etihad (4), Frontier (4), Air Canada (3) and WestJet (3), plus 19 more.
That depends on your passport and trip, so check the official source for United Kingdom: GOV.UK: check if you need a UK visa. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, Europe/London; flight time is our estimate.