Distance From St Louis Regional Airport to Ivato Airport, ALN - TNR Distance

The distance from St Louis Regional Airport (ALN) to Ivato Airport (TNR) is 9550 miles or 15370 kilometers or 8294 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 Antananarivo ( Madagascar )?

A one-way nonstop (direct) flight between Alton/St Louis and Antananarivo takes around 21 hours 57 minutes.

Estimated flight time from St Louis Regional Airport, Alton/St Louis, United States to Ivato Airport, Antananarivo, Madagascar is 21 hours 57 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 - TNR

Kilometers		15370 km
Statute Miles		9550 miles
Nautical Miles		8294 nm
Avg. Time of Flight		21 hours 57 minutes

St Louis Regional Airport to Ivato Airport Flight Route Map - ALN to TNR Flight Path

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

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

Nonstop flight route between Alton/St Louis, United States and Antananarivo, Madagascar.

Time Difference Between the Airports • ALN - TNR

Time difference between Alton/St Louis (United States) and Antananarivo (Madagascar) is 8 Hours.
Antananarivo time is 8 Hours ahead of Alton/St Louis.

Location	Local Time
Alton/St Louis (United States)	2025-12-14, 12:15:31 EST
Antananarivo (Madagascar)	2025-12-14, 20:15:31 EAT

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

Ivato Airport (TNR / FMMI) Antananarivo, Madagascar