Are there nonstop flights from Shiraz (SYZ) to Istanbul (IST)?

No. The fastest connection is via Ahvaz, about 3h 58m of total flying time.

What is the fastest connection from Shiraz (SYZ) to Istanbul (IST)?

via Ahvaz ≈ 3h 58m, via Najaf ≈ 4h, via Kuwait City ≈ 4h 7m (estimated flying time, excluding layovers).

from 23,000 JAL miles (economy, one way, based on the published award charts).

Shiraz Shahid Dastghaib International Airport (SYZ) to İstanbul Airport (IST)・2,513 km

No nonstop flights. The fastest connection is via Ahvaz (AWZ), about 3h 58m of flying time (layover not included).

With milesJAL 23,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.