# Distance between Casper, WY (CPR) and Seattle, WA (BFI)

Flight distance from Casper to Seattle (Casper–Natrona County International Airport – Seattle Boeing Field) is 834 miles / 1343 kilometers / 725 nautical miles. Estimated flight time is 2 hours 4 minutes.

Driving distance from Casper (CPR) to Seattle (BFI) is 1104 miles / 1776 kilometers and travel time by car is about 18 hours 6 minutes.

## Map of flight path and driving directions from Casper to Seattle.

Shortest flight path between Casper–Natrona County International Airport (CPR) and Seattle Boeing Field (BFI).

## How far is Seattle from Casper?

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

Vincenty's formula (applied above)
• 834.361 miles
• 1342.774 kilometers
• 725.040 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
• 832.431 miles
• 1339.668 kilometers
• 723.363 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 Casper–Natrona County International Airport
City: Casper, WY
Country: United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W

B Seattle Boeing Field
City: Seattle, WA
Country: 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 Casper and Seattle is 1 hour. Seattle is 1 hour behind Casper.

MDT

PDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 138 kg (304 pounds).

## Frequent Flyer Miles Calculator

Casper (CPR) → Seattle (BFI).

Distance:
834
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
834

Round trip?