a) all arrival and departure time is in Local Time of respective cities.
b) the schedule is merely for reference and guidance, readers are advised to check with the airlines for any last minute changes.

Flights to and from Bangkok:

Daily  Flight: 

Departs Kolkata at 22:30 Hours arrives Bangkok at 02:25 Hours (next day).

Departs Bangkok at 20:00 Hours arrives Kolkata at 21:05 Hours.

Departs Kolkata at 11:15 Hours arrives Bangkok at 15:00 Hours

Departs Bangkok at 16:15 Hours arrives Kolkata at 17:30 hours

Departs Kolkata at 11:45 Hours arrives Bangkok at 16:05 Hours

Departs Bangkok at 09:20 Hours arrives Kolkata at 10:20 hours

Departs Kolkata at 11:15 Hours arrives Bangkok at 15:05 Hours

Departs Bangkok at 16:05 Hours arrives Kolkata at 17:10 hours

Departs Kolkata at 12:15 Hours arrives Bangkok at 16:20 Hours

Departs Bangkok at 05:40  Hours arrives Kolkata at 06:45 hours

Flights To and From Dubai:

Daily 2 Flights.

Departs Kolkata at 09:55 hours arrives Dubai at 13:45 hours

Departs Kolkata  at 20:30 hours arrives Dubai  at  00:20 hours

Departs Dubai at  02:55 hours arrives Kolkata at 08:40 hours

Departs Dubai at 13:30 hours arrives  Kolkata at  19:15 hours

Flights to and From Singapore:

Departs Kolkata at 21:50 Hours arrives Singapore at 04:30 Hours (next day)

Departs Singapore at 19:00 Hours arrives Kolkata at 20:35 Hours.

Departs Kolkata at 11:15 Hours arrives Singapore at 17:45 Hours (next day)

Departs Singapore at 18:55 Hours arrives Kolkata at 20:40 Hours.

Flights to and from Frankfurt:

Departs Kolkata at  02:45 Hours arrives Frankfurt at 08:45 hours

Departs Frankfurt at 11:45 hours arrives Kolkata at 01:00 hours (next day).

Flights to and from Bhutan (Paro)

Departs Kolkata at  07:30 Hours arrives Paro at 09:10 hours

Departs Paro at 11:05 hours arrives Kolkata at 11:45 hours