Las Vegas (LAS) to Madrid (MAD): 5,597 miles (9,007 km) great-circle, about 11h 40m nonstop by our estimate. Cheapest fare observed: $974 round-trip on United Airlines, with 2 stops, departing June 18, 2026.
$974 round-trip, United Airlines UA9249, departing 2026-06-18 at 14:15, returning 2026-06-24. The recorded itinerary left on a Thursday, returning on a Wednesday 6 nights later; the fare was observed 54 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $974, it ranked 28th of the 30 round-trip fares we recorded from LAS (median $271). That is 17.4 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 Moscow (5,874 mi) at $1340.
LAS to MAD is the only one of 30 LAS routes where United Airlines priced cheapest. It is the 3rd longest of the 30 routes we track from LAS.
Of 35 departure airports with a fare to Madrid, Las Vegas (LAS) ranked 27th at $974. Lowest: $46 from Lisbon (LIS); highest: $1698 from Sydney (SYD); 13 nonstop. Cheapest-fare airlines (routes): United Airlines (4), Wizz Air (4), Air China (2), American Airlines (2), Ryanair (2) and TAP Portugal (2), plus 17 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 America/Los_Angeles, Europe/Madrid; flight time is our estimate.