Are there nonstop flights from Guwahati (GAU) to Istanbul (IST)?

No. The fastest connection is via New Delhi, about 8h 5m of total flying time.

What is the fastest connection from Guwahati (GAU) to Istanbul (IST)?

via New Delhi ≈ 8h 5m, via Dubai ≈ 8h 49m, via Abu Dhabi ≈ 8h 57m (estimated flying time, excluding layovers).

from 29,500 ANA miles (economy, one way, based on the published award charts).

Lokpriya Gopinath Bordoloi International Airport (GAU) to İstanbul Airport (IST)・5,922 km

No nonstop flights. The fastest connection is via New Delhi (DEL), about 8h 5m of flying time (layover not included).

With milesANA 29,500 miles+ (via DEL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.