# Distance between Honolulu, HI (HNL) and Casper, WY (CPR)

Flight distance from Honolulu to Casper (Honolulu Daniel K. Inouye International Airport – Casper–Natrona County International Airport) is 3301 miles / 5313 kilometers / 2869 nautical miles. Estimated flight time is 6 hours 45 minutes.

## Map of flight path from Honolulu to Casper.

Shortest flight path between Honolulu Daniel K. Inouye International Airport (HNL) and Casper–Natrona County International Airport (CPR).

## How far is Casper from Honolulu?

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

Vincenty's formula (applied above)
• 3301.180 miles
• 5312.734 kilometers
• 2868.647 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
• 3297.602 miles
• 5306.976 kilometers
• 2865.538 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 Honolulu Daniel K. Inouye International Airport
City: Honolulu, HI
Country: United States
IATA Code: HNL
ICAO Code: PHNL
Coordinates: 21°19′7″N, 157°55′19″W

B 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

## Time difference and current local times

The time difference between Honolulu and Casper is 3 hours. Casper is 3 hours ahead of Honolulu.

HST

MST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 370 kg (817 pounds).

## Frequent Flyer Miles Calculator

Honolulu (HNL) → Casper (CPR).

Distance:
3301
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
3301

Round trip?