Are there nonstop flights from Seattle (SEA) to Muscat (MCT)?

No. The fastest connection is via Dubai, about 15h 26m of total flying time.

What is the fastest connection from Seattle (SEA) to Muscat (MCT)?

via Dubai ≈ 15h 26m, via Doha ≈ 15h 49m, via Copenhagen ≈ 16h 14m (estimated flying time, excluding layovers).

from 35,000 ANA miles, from 40,000 JAL miles (economy, one way, based on the published award charts).

Seattle–Tacoma International Airport (SEA) to Muscat International Airport (MCT)・12,115 km

No nonstop flights. The fastest connection is via Dubai (DXB), about 15h 26m of flying time (layover not included).

With milesANA 35,000 miles+ (via IST)JAL 40,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.