London (LHR) to Barcelona (BCN): 713 miles (1,148 km) great-circle, about 1h 55m nonstop by our estimate. Cheapest fare observed: $110 round-trip on Vueling, nonstop, departing June 6, 2026.
$110 round-trip, Vueling VY6653, departing 2026-06-06 at 20:50, returning 2026-06-24. The recorded itinerary left on a Saturday, returning on a Wednesday 18 nights later; the fare was observed 42 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $110, it was the cheapest of the 30 round-trip fares we recorded from LHR (median $624). That is 15.4 cents per great-circle mile (round-trip price over one-way distance), below the LHR median of 22.9 cents across 30 round-trip routes.
Routes from LHR of similar length: Nice (647 mi) at $264 and Milan (582 mi) at $287.
Vueling had the cheapest fare on 3 of 30 LHR routes. It is the 25th longest of the 30 routes we track from LHR.
Of 57 departure airports with a fare to Barcelona, London (LHR) ranked 21st at $110. Lowest: $44 from Milan (MXP); highest: $1401 from Brisbane (BNE); 28 nonstop. Cheapest-fare airlines (routes): Vueling (11), Wizz Air (10), Ryanair (8), Air Canada (4), Air Europa (3) and Wizz Air Malta (3), plus 18 more.
That depends on your passport and trip, so check the official source for Spain: European Commission: Schengen visa policy. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Europe/London, Europe/Madrid; flight time is our estimate.