Air Miles Calculator

Distance between Seattle, WA (BFI) and Lewistown, MT (LWT)

Distance from Seattle to Lewistown (Seattle Boeing Field – Lewistown Municipal Airport) is 604 miles / 971 kilometers / 524 nautical miles.

How far is Lewistown from Seattle?

There are several ways to calculate distances between Seattle and Lewistown. Here are two common methods:

Vincenty's formula (applied above)
  • 603.507 miles
  • 971.251 kilometers
  • 524.434 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
  • 601.748 miles
  • 968.420 kilometers
  • 522.905 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 Seattle Boeing Field (BFI) to Lewistown Municipal Airport (LWT) is 1 hour 38 minutes.

Time difference and current local times

The time difference between Seattle and Lewistown is 1 hour. Lewistown is 1 hour ahead of Seattle.

Time Difference

Seattle
Lewistown

Seattle, WA

 PDT

Lewistown, MT

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 113 kg (249 pounds).

Airport information


A Seattle 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 Lewistown Municipal Airport
City: Lewistown, MT
Country: United States Flag of United States
IATA Code: LWT
ICAO Code: KLWT
Coordinates: 47°2′57″N, 109°28′1″W

Seattle to Lewistown flight path

Shortest flight path between Seattle Boeing Field (BFI) and Lewistown Municipal Airport (LWT).

Frequent Flyer Miles Calculator

Seattle (BFI) → Lewistown (LWT).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
604
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
604

Round trip?