Air Miles Calculator

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

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

Driving distance from Rock Springs (RKS) to Seattle (BFI) is 985 miles / 1585 kilometers and travel time by car is about 16 hours 9 minutes.

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

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

How far is Seattle from Rock Springs?

There are several ways to calculate distances between Rock Springs and Seattle. 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 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

B 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

Time difference and current local times

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

Time Difference

Rock Springs, WY

 MDT

Seattle, WA

 PDT

Carbon dioxide emissions

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

Frequent Flyer Miles Calculator

Rock Springs (RKS) → Seattle (BFI).

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

In total

Total frequent flyer miles:
770

Round trip?