How far is Seattle, WA, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Seattle (Seattle–Tacoma International Airport) is 512 miles / 824 kilometers / 445 nautical miles.
The driving distance from Great Falls (GTF) to Seattle (SEA) is 651 miles / 1048 kilometers, and travel time by car is about 12 hours 17 minutes.
Great Falls International Airport – Seattle–Tacoma International Airport
Search flights
Distance from Great Falls to Seattle
There are several ways to calculate the distance from Great Falls to Seattle. Here are two standard methods:
Vincenty's formula (applied above)- 511.994 miles
- 823.975 kilometers
- 444.911 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- 510.492 miles
- 821.557 kilometers
- 443.605 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 Great Falls to Seattle?
The estimated flight time from Great Falls International Airport to Seattle–Tacoma International Airport is 1 hour and 28 minutes.
What is the time difference between Great Falls and Seattle?
The time difference between Great Falls and Seattle is 1 hour. Seattle is 1 hour behind Great Falls.
Flight carbon footprint between Great Falls International Airport (GTF) and Seattle–Tacoma International Airport (SEA)
On average, flying from Great Falls to Seattle generates about 100 kg of CO2 per passenger, and 100 kilograms equals 221 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Great Falls to Seattle
See the map of the shortest flight path between Great Falls International Airport (GTF) and Seattle–Tacoma International Airport (SEA).
Airport information
| Origin | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States  |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″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 |
Airlines flying from Great Falls (GTF) to Seattle (SEA)
| Alaska Airlines |