runwayinuse

KSEA Seattle-Tacoma Intl

34R
CONFIRMED 99%

Runways 34R and 34L — assigned by ATIS (information M)

certainty: 99% evidence: STRONG towered now Class B

N 34R 16L 34L 16R 16C 34C

Wind calm · VFR · 39 min old

▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself

34R 88% 11901 ft
34L 12% 8500 ft
16L <1% 11901 ft
16R <1% 8500 ft
16C CLOSED 9426 ft
34C CLOSED 9426 ft

Active NOTAMs affecting runways

RWY CLOSED RWY 16C/34C until 11-21 01:00Z 
RWY 16C/34C CLSD EXC TAX BTN TWY M AND TWY P AND XNG
APCH OTS RWY 16C until 11-20 23:00Z 
NAV ILS RWY 16C CAT II NA
LIGHTING RWY 16C until 11-20 23:00Z 
RWY 16C ALS U/S
LIGHTING RWY 16C until 11-20 23:00Z 
RWY 16C PAPI U/S
APCH OTS RWY 16C until 11-20 23:00Z 
NAV ILS RWY 16C U/S
LIGHTING RWY 34C until 11-20 23:00Z 
RWY 34C PAPI U/S
LIGHTING RWY 34C until 11-20 23:00Z 
RWY 34C ALS U/S
APCH OTS RWY 34C until 11-20 23:00Z 
NAV ILS RWY 34C U/S
Why — evidence behind this answer

Runway 34R

Runway 34L

Runway 16L

Runway 16R

Runway 16C

Runway 34C

Sources consulted

sourcestatus agenote
D_ATISOK 35 min
METAROK 39 min
ADSBOK 1 min GOOD
NOTAMOK
CIFPNOT_CONFIGURED Instrument procedures: phase 4

Recent operations

timeaircrafttypeoprwyconf
07:23Z HL8254 B772 landing 34R 43%
07:21Z N905JB A321 landing 34R 43%
07:21Z N457AS B739 touch and go 34C 43%
07:16Z N457AS B739 landing 34R 48%
07:14Z N934AA A321 landing 34L 43%
07:10Z N526DE A21N departure 34R 43%
07:08Z N174US A321 departure 34R 57%
07:05Z N290SY E75L landing 34L 37%
07:01Z N582DN A21N departure 34R 95%
06:50Z N292AK B739 landing 34R 57%
06:46Z N546DN A21N landing 34C 37%
06:44Z N291SY E75L departure 34R 81%
06:44Z N636QX E75L landing 34L 43%
06:44Z N17285 B38M landing 34C 37%
06:42Z N587AS B738 landing 34L 37%
06:42Z N1489A B763 landing 34C 37%
06:42Z N546DN A21N landing 34R 48%
06:36Z N8775Q B38M landing 34R 57%
06:36Z N317AZ B763 landing 34R 37%
06:36Z N287AK B739 landing 34C 43%
06:34Z N77588 B39M departure 34R 95%
06:34Z RP-C3501 A359 landing 34C 37%
06:32Z N650QX E75L departure 34R 95%
06:32Z N587NW B753 landing 34R 57%

Was this right?

KSEA field & runways

Seattle-Tacoma Intl, Seattle, Washington. Field elevation 432 ft. Class B airspace. Towered. Magnetic variation 16.0°E on record, 14.8°E today.

The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.123°/year west — about 1° every 8 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against today's declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
RunwayTrueMagnetic Number LengthSurfacePattern Notes
16C 180.3° 165.5° runway 17 by the rule today · 5.5° past 9,426 ft CONC left ILS CLOSED
16L 180.3° 165.5° runway 17 by the rule today · 5.5° past 11,901 ft CONC ILS
16R 180.3° 165.5° runway 17 by the rule today · 5.5° past 8,500 ft CONC ILS
34C 0.3° 345.5° runway 35 by the rule today · 5.5° past 9,426 ft CONC left ILS CLOSED
34L 0.3° 345.5° runway 35 by the rule today · 5.5° past 8,500 ft CONC ILS
34R 0.3° 345.5° runway 35 by the rule today · 5.5° past 11,901 ft CONC ILS

What KSEA usually does

Of 41,931 operations this service has observed at KSEA since 2026-08-23:

Observed by this service only — not an FAA statistic, and biased toward the hours and days it has been watching. It is shown because it is the same history the engine learns its local-convention prior from.

Generated 07:31:35Z · auto-refreshes · JSON