Distance From Great Falls International Airport to Singapore Changi Airport, GTF - SIN Distance

The distance from Great Falls International Airport (GTF) to Singapore Changi Airport (SIN) is 8447 miles or 13593 kilometers or 7335 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.

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

A one-way nonstop (direct) flight between Great Falls and Singapore takes around 19 hours 25 minutes.

Estimated flight time from Great Falls International Airport, Great Falls, United States to Singapore Changi Airport, Singapore, Singapore is 19 hours 25 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 • GTF - SIN

Kilometers		13593 km
Statute Miles		8447 miles
Nautical Miles		7335 nm
Avg. Time of Flight		19 hours 25 minutes

Great Falls International Airport to Singapore Changi Airport Flight Route Map - GTF to SIN Flight Path

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

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

Nonstop flight route between Great Falls, United States and Singapore, Singapore.

Time Difference Between the Airports • GTF - SIN

Time difference between Great Falls (United States) and Singapore (Singapore) is 14 Hours.
Singapore time is 14 Hours ahead of Great Falls.

Location	Local Time
Great Falls (United States)	2026-03-20, 05:13:43 MDT
Singapore (Singapore)	2026-03-20, 19:13:43 +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

Great Falls International Airport (GTF / KGTF) Great Falls, United States

Destination

Singapore Changi Airport (SIN / WSSS) Singapore, Singapore