Map of flight path and driving directions from Seattle to Quincy.
Shortest flight path between Seattle Boeing Field (BFI) and Quincy Regional Airport (UIN).
How far is Quincy from Seattle?
There are several ways to calculate distances between Seattle and Quincy. Here are two common methods:Vincenty's formula (applied above)
- 1630.065 miles
- 2623.336 kilometers
- 1416.488 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
- 1626.235 miles
- 2617.172 kilometers
- 1413.160 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 Quincy is 2 hours. Quincy is 2 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 188 kg (414 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → Quincy (UIN).