A flight from Frankfurt to SF (Assuming SF is San Francisco) would take about 12 hours.
Flight time from Istanbul to Dushanbe is 4 hours 30 minutes.
10 second.
The flight time is approximately 13 hours.
4 hours
About 5 hours.
Approximately 12 hours.
8-10 hours
The flight time is 1 hour, 9 minutes.
You spelt Istanbul wrong.
about 2 hrs
4hr 30min Lisbon (LIS) to Istanbul Ataturk (IST) by a nonstop flight operated by THY Turkish Airlines.