Are there nonstop flights from Seattle (SEA) to Barcelona (BCN)?

Yes. Delta Air Lines fly this route. Flight time is about 10h 46m.

What is the fastest connection from Seattle (SEA) to Barcelona (BCN)?

via Calgary ≈ 11h 17m, via Dublin ≈ 11h 19m, via Reykjavík ≈ 11h 20m (estimated flying time, excluding layovers).

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

Seattle–Tacoma International Airport (SEA) to Josep Tarradellas Barcelona-El Prat Airport (BCN)・8,730 km

Nonstop flights available (1 airline). Flight time about 10h 46m. Nonstop return flights also operate.

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

29 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.