Cheap flights from Kolkata to Bangkok from ₹ 8,783

The cheapest month to fly to Bangkok from Kolkata is in March. Flight prices, which tend to average around ₹ 17,282, are often lower during this time because this is during the off-season. If you are unable to visit Bangkok during the month of March, then departing from Kolkata during the month February is also very affordable. Most momondo users find prices during this month for around ₹ 17,471.

On average, the least expensive day to fly to Bangkok from Kolkata is on a Monday. momondo users have found tickets for Monday departures for as low as ₹ 20,642. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Bangkok on Wednesday is ₹ 31,881.

In the evening is the cheapest time of day to fly from Kolkata to Bangkok when you can find flight prices for as low as ₹ 21,678. Flying to Bangkok in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Bangkok is in the afternoon when prices are around ₹ 28,208.

Fly from Kolkata Netaji S. Chandra to Bangkok Suvarnabhumi for the best Kolkata Netaji S. Chandra - Bangkok flight prices

You are more likely to see cheaper flights to Bangkok from Kolkata when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around ₹ 20,689 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Kolkata for as low as ₹ 17,660 on momondo.

There are 2 cabin classes available to choose from on Kolkata to Bangkok flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Thai Vietjet Air, SpiceJet, and Thai Lion Air are the most popular carriers operating from Kolkata Netaji S. Chandra to Bangkok

Thai Vietjet Air, Thai Lion Air and Thai AirAsia are the top three most popular airlines that fly to Bangkok from Kolkata according to our data. Thai Vietjet Air is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Bangkok. Keep in mind that there are 9 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Kolkata and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 103 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, IndiGo have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

As of September 2026, there are 6 flights per day flying from Kolkata to Bangkok. The most common time of day flights depart is 02:00, with 73% of flights taking off in the morning.

As of September 2026, 46 flights take off from Kolkata and land in Bangkok each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.