UA503

For travellers

Departure · Boston (BOS)

Terminal B · Gate B23

Scheduled 02 Oct 10:36 · Departed 02 Oct 10:36

Board status: Departed

Airborne since 02 Oct 10:30 (ADS-B)

Arrival · Chicago (ORD)

Terminal 1 · Gate C15

Scheduled 02 Oct 12:29 · Landed 02 Oct 12:15 · early

Board status: Active

Landed 02 Oct 12:15 (airport data)

Board data from bos, ord, updated 225 min ago; times local to each airport.

Flight

Status

Completed (landing confirmed by airport data)

Arrival confirmed via

Airport data (confirmed)

Departure

General Edward Lawrence Logan International Airport (BOS) — Boston, United States

Scheduled departure

2026-10-02 14:36 UTC

Departed

2026-10-02 14:30 UTC

Arrival

Chicago O'Hare International Airport (ORD) — Chicago, United States

Scheduled arrival

2026-10-02 17:29 UTC

Estimated arrival

2026-10-02 16:55 UTC

Codeshares

NZ2098

Distance flown

1593 km

Straight-line distance

1391 km

Aircraft

Registration

N77537

Type

Boeing 737-800

Seats

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

CO2 (EMEP est., total)

34.7 t (286 kg/pax Business, 200 kg/pax Economy)

Altitude & speed

Max altitude

30,025 ft

Max ground speed

411 kt

Tracked

2h 39m · 1,584 km

Altitude (ft, max 30,025)

Ground speed (kt, max 411)

Altitude (ft, max 30,025)

Ground speed (kt, max 411)

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
2026-10-02 14:30 UTC	UAL503	BOS → ORD Boston → Chicago	N77537	Boeing 737-800	Completed (landing confirmed by airport data)	1593 km
2026-10-01 14:34 UTC	UAL503	BOS → ORD Boston → Chicago	N78524	Boeing 737-800	Completed (landing confirmed by airport data)	1553 km
2026-09-29 14:41 UTC	UAL503	BOS → ORD Boston → Chicago	N27205	Boeing 737-800	Completed	1483 km
2026-09-28 15:47 UTC	UAL503	BOS → ORD Boston → Chicago	N24224	Boeing 737-800	Completed	1503 km
2026-09-27 16:25 UTC	UAL503	BOS → ORD Boston → Chicago	N78524	Boeing 737-800	Completed	1492 km
2026-09-26 22:08 UTC	UAL503	ORD → EGE Chicago → Eagle	N27733	Boeing 737-700	Incomplete (signal lost)	1697 km
2026-09-26 14:47 UTC	UAL503	BOS → ORD Boston → Chicago	N33714	Boeing 737-700	Completed	1538 km
2026-09-25 21:49 UTC	UAL503	ORD → EGE Chicago → Eagle	N24736	Boeing 737-700	Incomplete (signal lost)	1607 km
2026-09-25 14:47 UTC	UAL503	BOS → ORD Boston → Chicago	N437UA	Airbus A320 233	Completed	1540 km
2026-09-24 14:49 UTC	UAL503	BOS → ORD Boston → Chicago	N452UA	Airbus A320 233	Completed	1515 km
2026-09-23 14:36 UTC	UAL503	BOS → ORD Boston → Chicago	N17358	Boeing 737 MAX 8	Completed	1560 km
2026-09-22 14:39 UTC	UAL503	BOS → ORD Boston → Chicago	N37307	Boeing 737 MAX 8	Completed	1554 km
2026-09-21 14:45 UTC	UAL503	BOS → ORD Boston → Chicago	N17312	Boeing 737 MAX 8	Completed	1548 km
2026-09-20 14:51 UTC	UAL503	BOS → ORD Boston → Chicago	N27269	Boeing 737 MAX 8	Completed	1666 km
2026-09-19 16:37 UTC	UAL503	BOS → ORD Boston → Chicago	N17301	Boeing 737 MAX 8	Completed	1660 km
2026-09-18 15:05 UTC	UAL503	BOS → ORD Boston → Chicago	N47332	Boeing 737 MAX 8	Completed	1604 km
2026-09-17 16:54 UTC	UAL503	BOS → ORD Boston → Chicago	N17331	Boeing 737 MAX 8	Completed	1596 km