Newark (EWR) to London (LON): 3,456 miles (5,562 km) great-circle, about 7h 25m nonstop by our estimate. Cheapest fare observed: $728 round-trip on Icelandair, with 1 stop, departing July 4, 2026.
$728 round-trip, Icelandair FI622, departing 2026-07-04 at 20:25, returning 2026-07-16. The recorded itinerary left on a Saturday, returning on a Thursday 12 nights later; the fare was observed 70 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $728, it ranked 21st of the 30 round-trip fares we recorded from EWR (median $329). That is 21.1 cents per great-circle mile (round-trip price over one-way distance), above the EWR median of 16.5 cents across 30 round-trip routes.
Routes from EWR of similar length: Paris (3,640 mi) at $473 and Barcelona (3,838 mi) at $715.
Icelandair had the cheapest fare on 2 of 30 EWR routes. It is the 13th longest of the 30 routes we track from EWR.
Of 49 departure airports with a fare to London, Newark (EWR) ranked 24th at $728. 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.