Distance From St Louis Downtown Airport to Tan Son Nhat International Airport, CPS - SGN Distance

The distance from St Louis Downtown Airport (CPS) to Tan Son Nhat International Airport (SGN) is 8856 miles or 14253 kilometers or 7691 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 Cahokia/St Louis ( United States ) to Ho Chi Minh City ( Vietnam )?

A one-way nonstop (direct) flight between Cahokia/St Louis and Ho Chi Minh City takes around 20 hours 21 minutes.

Estimated flight time from St Louis Downtown Airport, Cahokia/St Louis, United States to Tan Son Nhat International Airport, Ho Chi Minh City, Vietnam is 20 hours 21 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 • CPS - SGN

Kilometers		14253 km
Statute Miles		8856 miles
Nautical Miles		7691 nm
Avg. Time of Flight		20 hours 21 minutes

St Louis Downtown Airport to Tan Son Nhat International Airport Flight Route Map - CPS to SGN Flight Path

Location of St Louis Downtown Airport & Tan Son Nhat International Airport is given below.
Click the map to view Cahokia/St Louis to Ho Chi Minh City nonstop flight path and travel direction.

Click to see flight route on Google Map between Cahokia/St Louis, United States and Ho Chi Minh City, Vietnam. .

Nonstop flight route between Cahokia/St Louis, United States and Ho Chi Minh City, Vietnam.

Time Difference Between the Airports • CPS - SGN

Time difference between Cahokia/St Louis (United States) and Ho Chi Minh City (Vietnam) is 11 Hours.
Ho Chi Minh City time is 11 Hours ahead of Cahokia/St Louis.

Location	Local Time
Cahokia/St Louis (United States)	2026-09-17, 15:07:14 EDT
Ho Chi Minh City (Vietnam)	2026-09-18, 02:07:14 +07

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

St Louis Downtown Airport (CPS / KCPS) Cahokia/St Louis, United States

Destination

Tan Son Nhat International Airport (SGN / VVTS) Ho Chi Minh City, Vietnam