Distance From St Louis Regional Airport to Chennai International Airport, ALN - MAA Distance

The distance from St Louis Regional Airport (ALN) to Chennai International Airport (MAA) is 8797 miles or 14157 kilometers or 7639 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 Alton/St Louis ( United States ) to Chennai ( India )?

A one-way nonstop (direct) flight between Alton/St Louis and Chennai takes around 20 hours 13 minutes.

Estimated flight time from St Louis Regional Airport, Alton/St Louis, United States to Chennai International Airport, Chennai, India is 20 hours 13 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 • ALN - MAA

Kilometers		14157 km
Statute Miles		8797 miles
Nautical Miles		7639 nm
Avg. Time of Flight		20 hours 13 minutes

St Louis Regional Airport to Chennai International Airport Flight Route Map - ALN to MAA Flight Path

Location of St Louis Regional Airport & Chennai International Airport is given below.
Click the map to view Alton/St Louis to Chennai nonstop flight path and travel direction.

Click to see flight route on Google Map between Alton/St Louis, United States and Chennai, India. .

Nonstop flight route between Alton/St Louis, United States and Chennai, India.

Time Difference Between the Airports • ALN - MAA

Time difference between Alton/St Louis (United States) and Chennai (India) is 10 Hours 30 Minutes.
Chennai time is 10 Hours 30 Minutes ahead of Alton/St Louis.

Location	Local Time
Alton/St Louis (United States)	2025-12-05, 02:31:23 EST
Chennai (India)	2025-12-05, 13:01:23 IST

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 Regional Airport (ALN / KALN) Alton/St Louis, United States

Destination

Chennai International Airport (MAA / VOMM) Chennai, India