# Distance between Windsor Locks, CT (BDL) and Helena, MT (HLN)

Flight distance from Windsor Locks to Helena (Bradley International Airport – Helena Regional Airport) is 1955 miles / 3147 kilometers / 1699 nautical miles. Estimated flight time is 4 hours 12 minutes.

Driving distance from Windsor Locks (BDL) to Helena (HLN) is 2369 miles / 3812 kilometers and travel time by car is about 40 hours 39 minutes.

## Map of flight path and driving directions from Windsor Locks to Helena.

Shortest flight path between Bradley International Airport (BDL) and Helena Regional Airport (HLN).

## How far is Helena from Windsor Locks?

There are several ways to calculate distances between Windsor Locks and Helena. Here are two common methods:

Vincenty's formula (applied above)
• 1955.244 miles
• 3146.660 kilometers
• 1699.060 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
• 1950.059 miles
• 3138.315 kilometers
• 1694.555 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

City: Windsor Locks, CT
Country: United States
IATA Code: BDL
ICAO Code: KBDL
Coordinates: 41°56′20″N, 72°40′59″W

B Helena Regional Airport
City: Helena, MT
Country: United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W

## Time difference and current local times

The time difference between Windsor Locks and Helena is 2 hours. Helena is 2 hours behind Windsor Locks.

EDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 213 kg (470 pounds).

## Frequent Flyer Miles Calculator

Windsor Locks (BDL) → Helena (HLN).

Distance:
1955
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1955

Round trip?