Distance From Hai Au Seaplane Base to St Louis Lambert International Airport

The distance from Hai Au Seaplane Base () to St Louis Lambert International Airport (STL) is 8164 miles or 13138 kilometers or 7090 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 Ha Long ( Vietnam ) to St Louis ( United States )?

A one-way nonstop (direct) flight between Ha Long and St Louis takes around 18 hours 46 minutes.

Estimated flight time from Hai Au Seaplane Base, Ha Long, Vietnam to St Louis Lambert International Airport, St Louis, United States is 18 hours 46 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 • - STL

Kilometers		13138 km
Statute Miles		8164 miles
Nautical Miles		7090 nm
Avg. Time of Flight		18 hours 46 minutes

Hai Au Seaplane Base to St Louis Lambert International Airport Flight Route Map - to STL Flight Path

Location of Hai Au Seaplane Base & St Louis Lambert International Airport is given below.
Click the map to view Ha Long to St Louis nonstop flight path and travel direction.

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

Nonstop flight route between Ha Long, Vietnam and St Louis, United States.

Time Difference Between the Airports • - STL

Time difference between Ha Long (Vietnam) and St Louis (United States) is 12 Hours.
St Louis time is 12 Hours behind Ha Long.

Location	Local Time
Ha Long (Vietnam)	2025-12-16, 23:52:26 +07
St Louis (United States)	2025-12-16, 11:52:26 EST

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

Hai Au Seaplane Base ( / ) Ha Long, Vietnam

Destination

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