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Flights between Bangkok (BKK) and Kolkata (CCU)

Suvarnabhumi Airport, Thailand ↔ Netaji Subhash Chandra Bose International Airport, India

A direct route between Bangkok and Kolkata appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 6 Aug 2026 — sampled, not a live timetable; confirm with the airline.

Bhutan Airlines (B3)IndiGo (6E)Thai Airways International (TG)Thai Vietjet Air (VZ)
Distance
1,637 km
1,017 miles
Est. flight time
2h 33m
great-circle estimate
Time difference
~1.5h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in Thailand

Jan
32°
37/27
10mm
Feb
33°
38/28
20mm
Mar
34°
39/29
30mm
Apr
35°
40/30
60mm
May
34°
39/29
180mm
Jun
33°
38/28
200mm
Jul
32°
37/27
200mm
Aug
32°
37/27
250mm
Sep
32°
37/27
300mm
Oct
31°
36/26
200mm
Nov
31°
36/26
50mm
Dec
31°
36/26
10mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in India

Jan
22°
27/17
20mm
Feb
25°
30/20
20mm
Mar
30°
35/25
25mm
Apr
36°
41/31
40mm
May
39°
44/34
80mm
Jun
39°
44/34
200mm
Jul
35°
40/30
320mm
Aug
34°
39/29
290mm
Sep
34°
39/29
200mm
Oct
32°
37/27
80mm
Nov
28°
33/23
30mm
Dec
23°
28/18
15mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

Thailand: Caution — some areas (UK FCDO) ↗India: Caution — some areas (UK FCDO) ↗

Common questions

How far is Bangkok from Kolkata?

Bangkok (BKK) and Kolkata (CCU) are around 1,637 km (1,017 miles) apart — an estimated 2h 33m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the BKK–CCU route?

Airlines recorded operating this route in the OpenFlights network include Bhutan Airlines, IndiGo, Thai Airways International, Thai Vietjet Air. This reflects historical scheduled service and may be out of date.

What is the time difference between Bangkok and Kolkata?

Time difference ~ 1.5 hours (varies with daylight-saving).

When is it warmest in India?

Across India, the warmest month on average is May, with mean temperatures around 39°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for Thailand and India?

The UK FCDO currently rates Thailand as Caution — some areas; The UK FCDO rates India as Caution — some areas. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.