United Airlines

UA521Boston to Newark

Name: United Airlines UA521 Boston to Newark: on-time record
Creator: TripStow
License: https://tripstow.com/notices

United Airlines flight UA521 flies from Boston (BOS) to Newark Liberty (EWR), 322 km. Over August 2025 to July 2026 it usually arrives about 17 minutes late: 69% of 417 flights arrived within 15 minutes of schedule and 2.6% were cancelled (US Department of Transportation data).

On-time record, last 12 months

69%

on time (within 15 min)

22%

more than 30 min late

2.6%

cancelled

+17 min

average arrival vs schedule

Every operation of UA521, August 2025 to July 2026: 417 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as UA521

Boston (BOS) to Newark Liberty (EWR)132 flights
Houston (IAH) to Boston (BOS)124 flights
Atlanta (ATL) to Houston (IAH)88 flights
Newark Liberty (EWR) to Fort Lauderdale Hollywood (FLL)19 flights
Houston (IAH) to New York (LGA)15 flights
Albany (ALB) to Chicago O'Hare (ORD)12 flights
Jacksn Hole (JAC) to Houston (IAH)6 flights
St. Louis (STL) to Houston (IAH)5 flights
Portland (PWM) to Houston (IAH)4 flights
Savannah Hilton Head (SAV) to Newark Liberty (EWR)4 flights

Other flights from Boston to Newark

UA1017 UA1053 UA1076 UA1131 UA1165 UA1219 UA1268 UA1296 UA1307 UA1308 UA1321 UA1469

More about Boston (BOS) and Newark Liberty (EWR).

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