Distance From Seattle–Tacoma International Airport to Mattala Rajapaksa International Airport, SEA - HRI Distance

The distance from Seattle–Tacoma International Airport (SEA) to Mattala Rajapaksa International Airport (HRI) is 8458 miles or 13612 kilometers or 7345 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 Seattle ( United States ) to Mattala ( Sri Lanka )?

A one-way nonstop (direct) flight between Seattle and Mattala takes around 19 hours 26 minutes.

Estimated flight time from Seattle–Tacoma International Airport, Seattle, United States to Mattala Rajapaksa International Airport, Mattala, Sri Lanka is 19 hours 26 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 - HRI

Kilometers		13612 km
Statute Miles		8458 miles
Nautical Miles		7345 nm
Avg. Time of Flight		19 hours 26 minutes

Seattle–Tacoma International Airport to Mattala Rajapaksa International Airport Flight Route Map - SEA to HRI Flight Path

Location of Seattle–Tacoma International Airport & Mattala Rajapaksa International Airport is given below.
Click the map to view Seattle to Mattala nonstop flight path and travel direction.

Click to see flight route on Google Map between Seattle, United States and Mattala, Sri Lanka. .

Nonstop flight route between Seattle, United States and Mattala, Sri Lanka.

Time Difference Between the Airports • SEA - HRI

Time difference between Seattle (United States) and Mattala (Sri Lanka) is 11 Hours 30 Minutes.
Mattala time is 11 Hours 30 Minutes ahead of Seattle.

Location	Local Time
Seattle (United States)	2026-10-01, 15:07:21 MDT
Mattala (Sri Lanka)	2026-10-02, 02:37:21 +0530

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

Mattala Rajapaksa International Airport (HRI / VCRI) Mattala, Sri Lanka