Air Miles Calculator

Distance between Seattle, WA (BFI) and Quincy, IL (UIN)

Distance from Seattle to Quincy (Boeing Field – Quincy Regional Airport) is 1630 miles / 2623 kilometers / 1416 nautical miles.

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).

Flight duration

Estimated flight time from Boeing Field (BFI) to Quincy Regional Airport (UIN) is 3 hours 35 minutes.

Time difference and current local times

The time difference between Seattle and Quincy is 2 hours. Quincy is 2 hours ahead of Seattle.

Time Difference

Seattle
Quincy

Seattle, WA

 PDT

Quincy, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 179 kg (394 pounds).

Airport information


A 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

B Quincy Regional Airport
City: Quincy, IL
Country: United States Flag of United States
IATA Code: UIN
ICAO Code: KUIN
Coordinates: 39°56′33″N, 91°11′40″W

Seattle to Quincy flight path

Shortest flight path between Boeing Field (BFI) and Quincy Regional Airport (UIN).

Frequent Flyer Miles Calculator

Seattle (BFI) → Quincy (UIN).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1630
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1630

Round trip?