ALN St Louis Regional Airport · Arrivals
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Frequently asked questions
The IATA airport code for St Louis Regional Airport is ALN.
The ICAO code for St Louis Regional Airport is KALN.
St Louis Regional Airport (ALN) is located in Alton/St Louis, United States.
The local time zone at St Louis Regional Airport (ALN) is America/Chicago (GMT-5).
About 1 scheduled departures were counted at St Louis Regional Airport (ALN) when flight schedules were last measured on September 4, 2026.
For international flights, arrive at least 3 hours before departure; for domestic flights, about 2 hours.