Distance From Southwest Washington Regional Airport to Netaji Subhash Chandra Bose International Airport, KLS - CCU Distance

The distance from Southwest Washington Regional Airport (KLS) to Netaji Subhash Chandra Bose International Airport (CCU) is 7296 miles or 11741 kilometers or 6336 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Kelso ( United States ) to Kolkata ( India )?

A one-way nonstop (direct) flight between Kelso and Kolkata takes around 16 hours 46 minutes.

Estimated flight time from Southwest Washington Regional Airport, Kelso, United States to Netaji Subhash Chandra Bose International Airport, Kolkata, India is 16 hours 46 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • KLS - CCU

Kilometers		11741 km
Statute Miles		7296 miles
Nautical Miles		6336 nm
Avg. Time of Flight		16 hours 46 minutes

Southwest Washington Regional Airport to Netaji Subhash Chandra Bose International Airport Flight Route Map - KLS to CCU Flight Path

Location of Southwest Washington Regional Airport & Netaji Subhash Chandra Bose International Airport is given below.
Click the map to view Kelso to Kolkata nonstop flight path and travel direction.

Click to see flight route on Google Map between Kelso, United States and Kolkata, India. .

Nonstop flight route between Kelso, United States and Kolkata, India.

Time Difference Between the Airports • KLS - CCU

Time difference between Kelso (United States) and Kolkata (India) is 12 Hours 30 Minutes.
Kolkata time is 12 Hours 30 Minutes ahead of Kelso.

Location	Local Time
Kelso (United States)	2026-11-06, 18:13:41 MST
Kolkata (India)	2026-11-07, 06:43:41 IST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Southwest Washington Regional Airport (KLS / KKLS) Kelso, United States

Destination

Netaji Subhash Chandra Bose International Airport (CCU / VECC) Kolkata, India