UA1128

For travellers

Departure · Washington, DC (IAD)

Gate D20

Scheduled 03 Oct 17:45 · Departed 03 Oct 17:37 · early

Board status: InAir

Airborne since 03 Oct 17:39 (ADS-B)

Arrival · Seattle (SEA)

Gate B9

Scheduled 03 Oct 20:37 · Estimated 03 Oct 20:22 · early

Board status: Landed

Landed 03 Oct 20:19 (ADS-B)

Board data from mwaa, sea, updated 204 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Washington Dulles International Airport (IAD) — Washington, DC, United States

Scheduled departure

2026-10-03 21:45 UTC

Departed

2026-10-03 21:39 UTC

Arrival

Seattle Tacoma International Airport (SEA) — Seattle, United States

Scheduled arrival

2026-10-04 03:37 UTC

Estimated arrival

2026-10-04 03:22 UTC

Codeshares

AV2028, AZ4416, CM2766, ET1368, LH7484, OS7907, SN8849

Distance flown

3848 km

Straight-line distance

3702 km

Approach distance

83 km

Aircraft

Registration

N87513

Type

Boeing 737-800

Seats

166 total (102 Economy, 48 Economy Plus, 16 First)

CO2 (EMEP est., total)

84.5 t (699 kg/pax Business, 489 kg/pax Economy)

Altitude & speed

Max altitude

36,025 ft

Max ground speed

450 kt

Tracked

5h 41m · 3,843 km

Altitude (ft, max 36,025)

Ground speed (kt, max 450)

Altitude (ft, max 36,025)

Ground speed (kt, max 450)

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

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-03 21:39 UTC	UAL1128	IAD → SEA Washington, DC → Seattle	N87513	Boeing 737-800	Completed	3848 km
2026-10-03 18:12 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N54525	Airbus A321 Neo	Completed	1024 km
2026-10-02 18:25 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N24537	Airbus A321 Neo	Completed	1020 km
2026-10-01 21:43 UTC	UAL1128	IAD → SEA Washington, DC → Seattle	N17460	Boeing 737 MAX 9	Completed	3877 km
2026-10-01 18:20 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N54552	Airbus A321 Neo	Completed	1043 km
2026-09-30 22:00 UTC	UAL1128	IAD → SEA Washington, DC → Seattle	N17467	Boeing 737 MAX 9	Completed	3888 km
2026-09-30 19:29 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N14515	Airbus A321 Neo	Completed	1048 km
2026-09-29 18:14 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N24514	Airbus A321 Neo	Completed	1048 km
2026-09-28 18:07 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N14503	Airbus A321 Neo	Completed	1043 km
2026-09-27 19:22 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N24508	Airbus A321 Neo	Completed	1036 km
2026-09-26 18:02 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N14524	Airbus A321 Neo	Completed	1037 km
2026-09-25 17:56 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N14549	Airbus A321 Neo	Completed	1048 km
2026-09-24 18:34 UTC	UAL1128	ORD → IAD Chicago → Washington, DC	N14527	Airbus A321 Neo	Completed	1015 km
2026-09-01 13:52 UTC	UAL1128	DFW → SFO Dallas-Fort Worth → San Francisco	N67812	Boeing 737-900	Completed	2561 km