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How far is Shonai from Seattle, WA?

The distance between Seattle (Seattle Boeing Field) and Shonai (Shonai Airport) is 4645 miles / 7475 kilometers / 4036 nautical miles.

Seattle Boeing Field – Shonai Airport

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4645
Miles
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7475
Kilometers
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4036
Nautical miles

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Distance from Seattle to Shonai

There are several ways to calculate the distance from Seattle to Shonai. Here are two standard methods:

Vincenty's formula (applied above)
  • 4644.789 miles
  • 7475.064 kilometers
  • 4036.212 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 4632.781 miles
  • 7455.738 kilometers
  • 4025.776 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Seattle to Shonai?

The estimated flight time from Seattle Boeing Field to Shonai Airport is 9 hours and 17 minutes.

Flight carbon footprint between Seattle Boeing Field (BFI) and Shonai Airport (SYO)

On average, flying from Seattle to Shonai generates about 538 kg of CO2 per passenger, and 538 kilograms equals 1 186 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Seattle to Shonai

See the map of the shortest flight path between Seattle Boeing Field (BFI) and Shonai Airport (SYO).

Airport information

Origin Seattle Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W
Destination Shonai Airport
City: Shonai
Country: Japan Flag of Japan
IATA Code: SYO
ICAO Code: RJSY
Coordinates: 38°48′43″N, 139°47′13″E