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

Flight distance from Casper to Seattle (Casper–Natrona County International Airport – Seattle–Tacoma International Airport) is 833 miles / 1341 kilometers / 724 nautical miles. Estimated flight time is 2 hours 4 minutes.

Driving distance from Casper (CPR) to Seattle (SEA) is 1106 miles / 1780 kilometers and travel time by car is about 18 hours 9 minutes.

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

Shortest flight path between Casper–Natrona County International Airport (CPR) and Seattle–Tacoma International Airport (SEA).

## 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)
• 833.088 miles
• 1340.726 kilometers
• 723.934 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
• 831.151 miles
• 1337.608 kilometers
• 722.250 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–Tacoma International Airport
City: Seattle, WA
Country: United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″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 (SEA).

Distance:
833
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
833

Round trip?