How far is Seattle, WA, from Quincy, IL?
The distance between Quincy (Quincy Regional Airport) and Seattle (Seattle–Tacoma International Airport) is 1630 miles / 2623 kilometers / 1416 nautical miles.
The driving distance from Quincy (UIN) to Seattle (SEA) is 2030 miles / 3267 kilometers, and travel time by car is about 35 hours 26 minutes.
Quincy Regional Airport – Seattle–Tacoma International Airport
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Distance from Quincy to Seattle
There are several ways to calculate the distance from Quincy to Seattle. Here are two standard methods:
Vincenty's formula (applied above)- 1629.695 miles
- 2622.740 kilometers
- 1416.166 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- 1625.858 miles
- 2616.564 kilometers
- 1412.832 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 Quincy to Seattle?
The estimated flight time from Quincy Regional Airport to Seattle–Tacoma International Airport is 3 hours and 35 minutes.
What is the time difference between Quincy and Seattle?
The time difference between Quincy and Seattle is 2 hours. Seattle is 2 hours behind Quincy.
Flight carbon footprint between Quincy Regional Airport (UIN) and Seattle–Tacoma International Airport (SEA)
On average, flying from Quincy to Seattle generates about 188 kg of CO2 per passenger, and 188 kilograms equals 414 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Quincy to Seattle
See the map of the shortest flight path between Quincy Regional Airport (UIN) and Seattle–Tacoma International Airport (SEA).
Airport information
| Origin | Quincy Regional Airport |
|---|---|
| City: | Quincy, IL |
| Country: | United States  |
| IATA Code: | UIN |
| ICAO Code: | KUIN |
| Coordinates: | 39°56′33″N, 91°11′40″W |
| Destination | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |