# 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
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
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.

PDT

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?