Distance From Seattle–Tacoma International Airport to Netaji Subhash Chandra Bose International Airport, SEA - CCU Distance

The distance from Seattle–Tacoma International Airport (SEA) to Netaji Subhash Chandra Bose International Airport (CCU) is 7229 miles or 11634 kilometers or 6278 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.

---

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

A one-way nonstop (direct) flight between Seattle and Kolkata takes around 16 hours 37 minutes.

Estimated flight time from Seattle–Tacoma International Airport, Seattle, United States to Netaji Subhash Chandra Bose International Airport, Kolkata, India is 16 hours 37 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 • SEA - CCU

Kilometers		11634 km
Statute Miles		7229 miles
Nautical Miles		6278 nm
Avg. Time of Flight		16 hours 37 minutes

Seattle–Tacoma International Airport to Netaji Subhash Chandra Bose International Airport Flight Route Map - SEA to CCU Flight Path

Location of Seattle–Tacoma International Airport & Netaji Subhash Chandra Bose International Airport is given below.
Click the map to view Seattle to Kolkata nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • SEA - CCU

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

Location	Local Time
Seattle (United States)	2025-12-14, 16:18:13 MST
Kolkata (India)	2025-12-15, 04:48:13 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

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States

Destination

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