A flight from Frankfurt to SF (Assuming SF is San Francisco) would take about 12 hours.
How long is the flight to Tahiti from sf
Flight time from Istanbul to Dushanbe is 4 hours 30 minutes.
A flight from Chicago, IL to Istanbul takes about 13-14 hours.
The flight time is 42 minutes.
The flight time is 55 minutes.
About 3.5 hours.
About 5 hours.
The flight would be around 11 hours.