Map of flight path and driving directions from Seattle to Hyannis.
Shortest flight path between Seattle Boeing Field (BFI) and Barnstable Municipal Airport (HYA).
How far is Hyannis from Seattle?
There are several ways to calculate distances between Seattle and Hyannis. Here are two common methods:Vincenty's formula (applied above)
- 2549.185 miles
- 4102.515 kilometers
- 2215.181 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
- 2542.363 miles
- 4091.536 kilometers
- 2209.253 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 Seattle and Hyannis is 3 hours. Hyannis is 3 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 281 kg (619 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → Hyannis (HYA).