How far is Helena, MT, from Thompson?

The distance between Thompson (Thompson Airport) and Helena (Helena Regional Airport) is 880 miles / 1416 kilometers / 765 nautical miles.

The driving distance from Thompson (YTH) to Helena (HLN) is 1197 miles / 1926 kilometers, and travel time by car is about 24 hours 47 minutes.

Distance from Thompson to Helena

There are several ways to calculate the distance from Thompson to Helena. Here are two standard methods:

Vincenty's formula (applied above)

• 879.885 miles
• 1416.038 kilometers
• 764.599 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 878.331 miles
• 1413.537 kilometers
• 763.249 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).

How long does it take to fly from Thompson to Helena?

The estimated flight time from Thompson Airport to Helena Regional Airport is 2 hours and 9 minutes.

What is the time difference between Thompson and Helena?

The time difference between Thompson and Helena is 1 hour. Helena is 1 hour behind Thompson.

Flight carbon footprint between Thompson Airport (YTH) and Helena Regional Airport (HLN)

On average, flying from Thompson to Helena generates about 142 kg of CO2 per passenger, and 142 kilograms equals 313 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Thompson to Helena

See the map of the shortest flight path between Thompson Airport (YTH) and Helena Regional Airport (HLN).

Airport information

Origin	Thompson Airport
City:	Thompson
Country:	Canada
IATA Code:	YTH
ICAO Code:	CYTH
Coordinates:	55°48′3″N, 97°51′51″W

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