Atlanta (ATL) to London (LON): 4,201 miles (6,761 km) great-circle, about 8h 55m nonstop by our estimate. Cheapest fare observed: $783 round-trip on Frontier, with 3 stops, departing June 2, 2026.
$783 round-trip, Frontier F93512, departing 2026-06-02 at 05:05, returning 2026-06-09. The recorded itinerary left on a Tuesday, returning on a Tuesday 7 nights later; the fare was observed 38 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $783, it ranked 21st of the 30 round-trip fares we recorded from ATL (median $212). That is 18.6 cents per great-circle mile (round-trip price over one-way distance), above the ATL median of 15.8 cents across 30 round-trip routes.
Routes from ATL of similar length: St. Petersburg (4,996 mi) at $1952 and Moscow (5,367 mi) at $1277.
Frontier had the cheapest fare on 18 of 30 ATL routes. It is the 10th longest of the 30 routes we track from ATL.
Of 49 departure airports with a fare to London, Atlanta (ATL) ranked 29th at $783. 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.