Are there nonstop flights from Madrid (MAD) to Seattle (SEA)?

No. The fastest connection is via Reykjavík, about 11h 14m of total flying time.

What is the fastest connection from Madrid (MAD) to Seattle (SEA)?

via Reykjavík ≈ 11h 14m, via Dublin ≈ 11h 16m, via London ≈ 11h 32m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Adolfo Suárez Madrid–Barajas Airport (MAD) to Seattle–Tacoma International Airport (SEA)・8,522 km

No nonstop flights. The fastest connection is via Reykjavík (KEF), about 11h 14m of flying time (layover not included).

With milesANA 27,500 miles+ (via YYZ)JAL 37,000 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

30 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.