ACH

Sankt Gallen Altenrhein Airport

ICAO LSZR47.4850°N 9.5608°E398 m / 1,306 ftMedium airport
On the map

Sankt Gallen Altenrhein Airport (IATA: ACH, ICAO: LSZR) is a medium airport in St. Gallen, Switzerland. It opened in 1927. It has 2 runways; the longest is 1,455 m (4,774 ft). In 2025 it handled 69 thousand passengers.

Timeline

2 events · 1927–1994
1927
OpenedSankt Gallen Altenrhein Airport opens.
24 JAN 1994
Disaster1994 Lake Constance Cessna 425 crash.3 killed
From WikidataEvery airfield, 1903–2026

Runways & airfield

Schematic · N · © OpenStreetMap
10/28099° / 279° · LIT
LENGTH1,455 m4,774 ftWIDTH30 m98 ftSURFACEAsphalt
10L/28R099° / 279°
LENGTH810 m2,657 ftWIDTH20 m65 ftSURFACEGrass

Passengers per year

2014–2025
84K
92K
99K
110K
113K
107K
22K
32K
56K
67K
69K
69K
141516171819202122232425

Routes

12 destinations · 5 countries

Straight lines are great circles; rings mark true distance from ACH. Dashed: seasonal or charter. From the Wikipedia article “St. Gallen–Altenrhein Airport” (revision of 8 Jul 2026), CC BY-SA 4.0.

Records & rankings

Ranked among 48,011 open airports · world · region · country
Passengers69K (2025)1 · FEWER1 · FEWERMEDIAN · 64KMEDIAN · 64KMORE · 103MMORE · 103M#1,950of 3,974 · #415 Europe · #3 CHLongest runway1,455 m4,774 ft46 m · SHORT150 ft · SHORTMEDIAN · 975 mMEDIAN · 3,200 ftLONG · 5,300 mLONG · 17,388 ft=7,504of 29,823 · #997 Europe · #15 CHElevation398 m1,306 ft-386 m · LOW-1,266 ft · LOWMEDIAN · 240 mMEDIAN · 787 ftHIGH · 4,938 mHIGH · 16,200 ft=13,767of 43,341 · =1,057 Europe · #55 CHAgeOpened 19272026 · NEWEST2026 · NEWESTMEDIAN · 1976MEDIAN · 1976OLDEST · 1902OLDEST · 1902=280of 15,079 · =204 Europe · =6 CHRunways21 · FEWER1 · FEWERMEDIAN · 1MEDIAN · 1MORE · 8MORE · 8=713of 29,943 · =134 Europe · =5 CH
Scale: share of airports ranked below, best on the right · ties shown as = and a band · passengers are each airport’s latest year on record

Radio frequencies

6 channels
ACCZURICH RADAR133.900
ARRZURICH ARR119.925
ATISATIS123.775
GNDGND121.800
TWRTWR118.650
FISZurich Information (en,ge)124.700