Distance From Na San Airport to St Louis Lambert International Airport, SQH - STL Distance

The distance from Na San Airport (SQH) to St Louis Lambert International Airport (STL) is 8190 miles or 13180 kilometers or 7112 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 Mai Son ( Vietnam ) to St Louis ( United States )?

A one-way nonstop (direct) flight between Mai Son and St Louis takes around 18 hours 49 minutes.

Estimated flight time from Na San Airport, Mai Son, Vietnam to St Louis Lambert International Airport, St Louis, United States is 18 hours 49 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 • SQH - STL

Kilometers		13180 km
Statute Miles		8190 miles
Nautical Miles		7112 nm
Avg. Time of Flight		18 hours 49 minutes

Na San Airport to St Louis Lambert International Airport Flight Route Map - SQH to STL Flight Path

Location of Na San Airport & St Louis Lambert International Airport is given below.
Click the map to view Mai Son to St Louis nonstop flight path and travel direction.

Click to see flight route on Google Map between Mai Son, Vietnam and St Louis, United States. .

Nonstop flight route between Mai Son, Vietnam and St Louis, United States.

Time Difference Between the Airports • SQH - STL

Time difference between Mai Son (Vietnam) and St Louis (United States) is 11 Hours.
St Louis time is 11 Hours behind Mai Son.

Location	Local Time
Mai Son (Vietnam)	2026-09-18, 14:55:24 +07
St Louis (United States)	2026-09-18, 03:55:24 EDT

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

Na San Airport (SQH / VVNS) Mai Son, Vietnam

Destination

St Louis Lambert International Airport (STL / KSTL) St Louis, United States