Are there nonstop flights from Muscat (MCT) to Bilbao (BIO)?

No. The fastest connection is via Rome, about 7h 59m of total flying time.

What is the fastest connection from Muscat (MCT) to Bilbao (BIO)?

via Rome ≈ 7h 59m, via Istanbul ≈ 8h 1m, via Istanbul ≈ 8h 1m (estimated flying time, excluding layovers).

from 30,000 ANA miles (economy, one way, based on the published award charts).

Muscat International Airport (MCT) to Bilbao Airport (BIO)・5,940 km

No nonstop flights. The fastest connection is via Rome (FCO), about 7h 59m of flying time (layover not included).

With milesANA 30,000 miles+ (via IST)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

13 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.