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ET1369

SEA → IAD · Boeing 737 MAX 9 · United Airlines

For travellers

Departure · Seattle (SEA)

Gate B9
Scheduled 30 Sep 08:25
Board status: Departed
Airborne since 30 Sep 08:39 (ADS-B)

Arrival · Washington, DC (IAD)

Gate D20 · Baggage belt 3
Scheduled 30 Sep 16:31 · Landed 30 Sep 16:01 · early
Board status: InGate
Landed 30 Sep 16:04 (airport data)

Board data from mwaa, sea, updated 2225 min ago; times local to each airport.

Flight

Status
Completed (landing confirmed by airport data)
Arrival confirmed via
Airport data (confirmed)
Departure
Seattle Tacoma International Airport (SEA) — Seattle, United States
Scheduled departure
2026-09-30 15:25 UTC
Departed
2026-09-30 15:39 UTC
Arrival
Washington Dulles International Airport (IAD) — Washington, DC, United States
Scheduled arrival
2026-09-30 20:31 UTC
Estimated arrival
2026-09-30 19:57 UTC
Also flies as
UA1523
Codeshares
ET1369, LH7485, OS7908, SN8850
Distance flown
3850 km
Straight-line distance
3702 km

Aircraft

Registration
N77582
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
75.2 t (534 kg/pax Business, 407 kg/pax Economy)

Altitude & speed

Max altitude
35,050 ft
Max ground speed
560 kt
Tracked
4h 22m · 3,833 km
Altitude (ft, max 35,050)
018,92737,8540m1h 0m2h 0m3h 0m4h 0m
Ground speed (kt, max 560)
03026050m1h 0m2h 0m3h 0m4h 0m
Altitude (ft, max 35,050)
018,92737,8540m2h 0m4h 0m
Ground speed (kt, max 560)
03026050m2h 0m4h 0m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-09-30 15:39 UTC UAL1523 SEA → IAD
Seattle → Washington, DC
 N77582 Boeing 737 MAX 9 Completed (landing confirmed by airport data) 3850 km

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