Distance From Helena Regional Airport to Singapore Changi Airport, HLN - SIN Distance

The distance from Helena Regional Airport (HLN) to Singapore Changi Airport (SIN) is 8471 miles or 13632 kilometers or 7356 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

---

How long does it take to travel from Helena ( United States ) to Singapore ( Singapore )?

A one-way nonstop (direct) flight between Helena and Singapore takes around 19 hours 28 minutes.

Estimated flight time from Helena Regional Airport, Helena, United States to Singapore Changi Airport, Singapore, Singapore is 19 hours 28 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • HLN - SIN

Kilometers		13632 km
Statute Miles		8471 miles
Nautical Miles		7356 nm
Avg. Time of Flight		19 hours 28 minutes

Helena Regional Airport to Singapore Changi Airport Flight Route Map - HLN to SIN Flight Path

Location of Helena Regional Airport & Singapore Changi Airport is given below.
Click the map to view Helena to Singapore nonstop flight path and travel direction.

Click to see flight route on Google Map between Helena, United States and Singapore, Singapore. .

Nonstop flight route between Helena, United States and Singapore, Singapore.

Time Difference Between the Airports • HLN - SIN

Time difference between Helena (United States) and Singapore (Singapore) is 15 Hours.
Singapore time is 15 Hours ahead of Helena.

Location	Local Time
Helena (United States)	2025-12-15, 23:35:59 MST
Singapore (Singapore)	2025-12-16, 14:35:59 +08

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Helena Regional Airport (HLN / KHLN) Helena, United States

Destination

Singapore Changi Airport (SIN / WSSS) Singapore, Singapore