T1’s small Bank Branch sits landside before security.
This is a basic in-terminal bank counter at Sankt Gallen Altenrhein Airport (ACH), positioned in T1 on the public side before you reach security. It mainly serves local traffic heading toward People’s flights to Vienna and regional business travelers using the airport as a quick hop in and out of eastern Switzerland.
Hours are not clearly published online, and they tend to align with the main flight waves in and out of ACH, so assume weekday daytime coverage and far more limited availability early morning, late evening, and on Sundays. If you absolutely need in-person service for cash, a transfer issue, or documents stamped, build in a buffer before your check-in cut-off.
Services are typical for a small Swiss regional airport: basic cash handling in CHF and EUR, simple account support depending on your bank relationship, and help with payment issues that come up around ticket purchases at the airline desks in T1. Do not expect foreign-currency exotica beyond EUR, and do not expect full private-banking style appointments at this counter.
There is usually an ATM close by in the public hall of T1, which is the safer bet outside office-style hours. Use the counter here only if you specifically need a human to sort something out. One practical tip: if you have a tight check-in window for a Vienna flight, clear your banking tasks before joining the airline desk queue so you are not stuck shuttling back and forth across the small terminal.