SEA
Seattle, WA
Seattle–Tacoma International Airport
Large airport
TOWERED
AIRLINE SERVICE
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FIELD ELEVATION
433 ft
LONGEST RUNWAY
11,901 ft
RUNWAYS
3
SURFACE
Asphalt
CTAF / UNICOM
118.5
TOWER
119.9
LATITUDE
47°26'52.6"N
LONGITUDE
122°18'37.0"W
ICAO
KSEA
RUNWAYS
RWY
LENGTH
WIDTH
SURFACE
LIGHTS
16C/34C
9,426 ft
150 ft
Asphalt
Lighted
16L/34R
11,901 ft
150 ft
Asphalt
Lighted
16R/34L
8,500 ft
150 ft
Asphalt
Lighted
RADIO
CTAF
Oshosh traffic
118.5
UNIC
UNICOM
122.95
TWR
Seattle Tower
119.9
GND
Seattle Ground
121.7
CLD
CLNC DEL
128
A/D
APP/DEP
119.2
D-ATIS
Digital ATIS
118
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No notes from the field
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Where this data comes from
OurAirports open data (public domain), derived from FAA NASR. Retrieved 26 August 2026. Airport diagrams, where shown, are FAA charts, cycle 2608, effective 6 August 2026 to 3 September 2026. Where the FAA publishes none, the runway layout is drawn to scale from published threshold coordinates — a schematic, not a survey. Not for navigation. Check the Chart Supplement and NOTAMs before you fly.