Are there nonstop flights from St. Petersburg (LED) to Hanoi (HAN)?

No. The fastest connection is via Almaty, about 9h 31m of total flying time.

What is the fastest connection from St. Petersburg (LED) to Hanoi (HAN)?

via Almaty ≈ 9h 31m, via Chengdu ≈ 9h 34m, via Moscow ≈ 9h 37m (estimated flying time, excluding layovers).

from 29,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Pulkovo Airport (LED) to Noi Bai International Airport (HAN)・7,176 km

No nonstop flights. The fastest connection is via Almaty (ALA), about 9h 31m of flying time (layover not included).

With milesANA 29,500 miles+ (via IST)JAL 37,000 miles+ (via PVG)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.