Air Miles Calculator

Distance between Seattle, WA (BFI) and Rock Springs, WY (RKS)

Flight distance from Seattle to Rock Springs (Seattle Boeing Field – Southwest Wyoming Regional Airport) is 770 miles / 1239 kilometers / 669 nautical miles. Estimated flight time is 1 hour 57 minutes.

Driving distance from Seattle (BFI) to Rock Springs (RKS) is 981 miles / 1578 kilometers and travel time by car is about 16 hours 14 minutes.

Map of flight path and driving directions from Seattle to Rock Springs.

Shortest flight path between Seattle Boeing Field (BFI) and Southwest Wyoming Regional Airport (RKS).

How far is Rock Springs from Seattle?

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

Vincenty's formula (applied above)
  • 769.766 miles
  • 1238.819 kilometers
  • 668.909 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
  • 768.385 miles
  • 1236.595 kilometers
  • 667.708 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).

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 Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States Flag of United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″W

Time difference and current local times

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

Time Difference

Seattle, WA

 PDT

Rock Springs, WY

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 132 kg (291 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Rock Springs (RKS).

Distance:
770
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
770

Round trip?