Las Vegas (LAS) to London (LON): 5,216 miles (8,395 km) great-circle, about 10h 55m nonstop by our estimate. Cheapest fare observed: $942 round-trip on WestJet, with 3 stops, departing June 16, 2026.
$942 round-trip, WestJet WS1057, departing 2026-06-16 at 13:20, returning 2026-06-30. The recorded itinerary left on a Tuesday, returning on a Tuesday 14 nights later; the fare was observed 52 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $942, it ranked 27th of the 30 round-trip fares we recorded from LAS (median $271). That is 18.1 cents per great-circle mile (round-trip price over one-way distance), below the LAS median of 20.1 cents across 30 round-trip routes.
Routes from LAS of similar length: St. Petersburg (5,525 mi) at $1877 and Madrid (5,597 mi) at $974.
WestJet had the cheapest fare on 2 of 30 LAS routes. It is the 5th longest of the 30 routes we track from LAS.
Of 49 departure airports with a fare to London, Las Vegas (LAS) ranked 39th at $942. 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/Los_Angeles, Europe/London; flight time is our estimate.