Map of flight path from Reykjavik to Seattle.
Shortest flight path between Keflavík International Airport (KEF) and Seattle–Tacoma International Airport (SEA).
How far is Seattle from Reykjavik?
There are several ways to calculate distances between Reykjavik and Seattle. Here are two common methods:Vincenty's formula (applied above)
- 3622.365 miles
- 5829.632 kilometers
- 3147.749 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 3611.004 miles
- 5811.348 kilometers
- 3137.877 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).
Time difference and current local times
The time difference between Reykjavik and Seattle is 7 hours. Seattle is 7 hours behind Reykjavik.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 410 kg (903 pounds).
Frequent Flyer Miles Calculator
Reykjavik (KEF) → Seattle (SEA).