ALO
Waterloo Regional Airport

Waterloo Regional Airport (IATA: ALO, ICAO: KALO) is a medium airport in Waterloo, Iowa, United States. It opened in 1946. It has 2 runways; the longest is 8,399 ft (2,560 m). It is operated by Waterloo. In 2025 it handled 41 thousand passengers.
Timeline
1 event · 1946–19461946
OpenedWaterloo Regional Airport opens.
From WikidataEvery airfield, 1903–2026
Runways & airfield
Schematic · N · © OpenStreetMap · FAA diagram PDF12/30128° / 308° · LIT
LENGTH8,399 ft2,560 mWIDTH150 ft46 mSURFACEAsphalt
18/36188° / 008° · LIT
LENGTH6,003 ft1,830 mWIDTH150 ft46 mSURFACEAsphalt
Passengers per year
2015–202553K
53K
54K
48K
47K
14K
29K
34K
26K
41K
15161718192021222425
Routes
1 destinations · 1 countryStraight lines are great circles; rings mark true distance from ALO. From the Wikipedia article “Waterloo Regional Airport” (revision of 8 Aug 2026), CC BY-SA 4.0.
Records & rankings
Ranked among 48,011 open airports · world · region · countryScale: 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
8 channelsA/DAPP/DEP118.900
ATISATIS120.650
CTAFCTAF118.100
GNDGND121.900
OPSARNG OPS36.700
RDOFORT DODGE RDO122.050
TWRTWR118.100
UNICUNICOM122.950