UAL2104

For travellers

Departure · Boston (BOS)

Terminal B · Gate B28

Scheduled 12:36 · Departed 12:36

Board status: Departed

Airborne since 12:46 (ADS-B)

Board data from bos, updated 398 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (callsign change)

Departure

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

Scheduled departure

2026-10-03 16:36 UTC

Departed

2026-10-03 16:46 UTC

Arrival

Newark Liberty International Airport (EWR) — Newark, United States

Also flies as

UA2104

Distance flown

510 km

Straight-line distance

322 km

Approach distance

164 km

Aircraft

Registration

N21723

Type

Boeing 737-700

Seats

126 total (78 Economy, 36 Economy Plus, 12 Business)

Altitude & speed

Max altitude

15,775 ft

Max ground speed

359 kt

Tracked

2h 41m · 507 km

Altitude (ft, max 15,775)

Ground speed (kt, max 359)

Altitude (ft, max 15,775)

Ground speed (kt, max 359)

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 16:46 UTC	UAL2104	BOS → EWR Boston → Newark	N21723	Boeing 737-700	Completed	510 km
2026-10-02 17:06 UTC	UAL2104	BOS → EWR Boston → Newark	N21723	Boeing 737-700	Completed	456 km
2026-10-01 16:56 UTC	UAL2104	BOS → EWR Boston → Newark	N25705	Boeing 737-700	Completed	473 km
2026-09-30 16:51 UTC	UAL2104	BOS → EWR Boston → Newark	N25705	Boeing 737-700	Completed	455 km
2026-09-29 16:54 UTC	UAL2104	BOS → EWR Boston → Newark	N25705	Boeing 737-700	Completed	474 km
2026-09-28 18:15 UTC	UAL2104	BOS → EWR Boston → Newark	N25705	Boeing 737-700	Completed	544 km
2026-09-27 16:52 UTC	UAL2104	BOS → EWR Boston → Newark	N39728	Boeing 737-700	Completed	589 km
2026-09-26 16:35 UTC	UAL2104	BOS → EWR Boston → Newark	N66808	Boeing 737-900	Completed	564 km
2026-09-25 16:54 UTC	UAL2104	BOS → EWR Boston → Newark	N75436	Boeing 737-900	Completed	531 km
2026-09-24 17:02 UTC	UAL2104	BOS → EWR Boston → Newark	N47414	Boeing 737-900	Completed	553 km
2026-09-23 16:56 UTC	UAL2104	BOS → EWR Boston → Newark	N891UA	Airbus A319	Completed	542 km
2026-09-22 16:43 UTC	UAL2104	BOS → EWR Boston → Newark	N804UA	Airbus A319	Completed	537 km
2026-09-20 17:55 UTC	UAL2104	BOS → EWR Boston → Newark	N802UA	Airbus A319	Completed	548 km
2026-09-18 16:45 UTC	UAL2104	BOS → EWR Boston → Newark	N828UA	Airbus A319	Completed	561 km
2026-09-17 16:47 UTC	UAL2104	BOS → EWR Boston → Newark	N822UA	Airbus A319	Completed	544 km
2026-09-16 16:46 UTC	UAL2104	BOS → EWR Boston → Newark	N834UA	Airbus A319	Completed	500 km
2026-09-15 18:06 UTC	UAL2104	BOS → EWR Boston → Newark	N893UA	Airbus A319	Completed	509 km
2026-09-14 16:46 UTC	UAL2104	BOS → EWR Boston → Newark	N892UA	Airbus A319	Completed	609 km
2026-09-13 16:53 UTC	UAL2104	BOS → EWR Boston → Newark	N852UA	Airbus A319	Completed	428 km
2026-09-11 16:44 UTC	UAL2104	BOS → EWR Boston → Newark	N850UA	Airbus A319	Completed	521 km
2026-09-10 16:41 UTC	UAL2104	BOS → EWR Boston → Newark	N838UA	Airbus A319	Completed	484 km
2026-09-09 16:39 UTC	UAL2104	BOS → EWR Boston → Newark	N889UA	Airbus A319	Completed	473 km
2026-09-07 16:41 UTC	UAL2104	BOS → EWR Boston → Newark	N877UA	Airbus A319	Completed	622 km
2026-09-04 16:56 UTC	UAL2104	BOS → EWR Boston → Newark	N814UA	Airbus A319	Completed	550 km
2026-09-03 18:14 UTC	UAL2104	BOS → EWR Boston → Newark	N832UA	Airbus A319	Completed	470 km
2026-09-02 19:22 UTC	UAL2104	BOS → EWR Boston → Newark	N811UA	Airbus A319	Completed	516 km
2026-09-01 16:41 UTC	UAL2104	BOS → EWR Boston → Newark	N845UA	Airbus A319	Completed	487 km
2026-08-31 16:37 UTC	UAL2104	BOS → EWR Boston → Newark	N816UA	Airbus A319	Completed	497 km
2026-08-30 16:41 UTC	UAL2104	BOS → EWR Boston → Newark	N873UA	Airbus A319	Completed	414 km
2026-08-28 19:27 UTC	UAL2104	BOS → EWR Boston → Newark	N829UA	Airbus A319	Completed	520 km
2026-08-26 16:36 UTC	UAL2104	BOS → EWR Boston → Newark	N825UA	Airbus A319	Completed	574 km
2026-08-25 16:39 UTC	UAL2104	BOS → EWR Boston → Newark	N821UA	Airbus A319	Completed	456 km
2026-08-24 17:07 UTC	UAL2104	BOS → EWR Boston → Newark	N814UA	Airbus A319	Completed	458 km
2026-08-23 16:46 UTC	UAL2104	BOS → EWR Boston → Newark	N814UA	Airbus A319	Completed	583 km
2026-08-21 16:47 UTC	UAL2104	BOS → EWR Boston → Newark	N842UA	Airbus A319	Completed	787 km
2026-08-20 15:27 UTC	UAL2104	SMF → LAX Sacramento → Los Angeles	N39461	Boeing 737-900	Completed	1455 km
2026-08-19 16:40 UTC	UAL2104	BOS → EWR Boston → Newark	N811UA	Airbus A319	Completed	~1971 km est. (963 km recorded)
2026-08-18 16:52 UTC	UAL2104	BOS → EWR Boston → Newark	N840UA	Airbus A319	Completed	1348 km
2026-08-17 16:46 UTC	UAL2104	BOS → EWR Boston → Newark	N891UA	Airbus A319	Completed	723 km
2026-08-16 16:47 UTC	UAL2104	BOS → EWR Boston → Newark	N841UA	Airbus A319	Completed	768 km
2026-08-12 16:56 UTC	UAL2104	BOS → EWR Boston → Newark	N830UA	Airbus A319	Completed	736 km
2026-08-11 17:03 UTC	UAL2104	BOS → EWR Boston → Newark	N77430	Boeing 737-900	Completed	669 km