OnTimeRoutes
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United Airlines EWR to BOS on-time performance

United Airlines nonstop flights from Newark to Boston · Aug 2025 – Jul 2026

On-time arrivals
71%
arrived < 15 min late
Cancelled
2.9%
79 flights
Avg arrival delay
22 min
76 min when late
Rank on route
#2 of 2
route average 72% on time

Key facts

  • United Airlines flights on EWR to BOS arrived on time 71% of the time in Aug 2025 – Jul 2026.
  • 2.9% were cancelled, and 13% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 72% on time overall.
  • The largest source of delay minutes was air traffic control & airport congestion (43%).

On-time trend by month

30%65%100%July 2025: 58.7% on time, 8.0% cancelledJul ’25August 2025: 71.5% on time, 0.5% cancelledAug ’25September 2025: 54.2% on time, 1.7% cancelledSep ’25October 2025: 48.0% on time, 2.2% cancelledOct ’25November 2025: 69.0% on time, 8.1% cancelledNov ’25December 2025: 78.7% on time, 0.5% cancelledDec ’25January 2026: 76.4% on time, 5.9% cancelledJan ’26February 2026: 79.4% on time, 8.5% cancelledFeb ’26March 2026: 72.3% on time, 1.7% cancelledMar ’26April 2026: 81.3% on time, 0.0% cancelledApr ’26May 2026: 83.0% on time, 0.0% cancelledMay ’26June 2026: 74.9% on time, 0.9% cancelledJun ’26July 2026: 65.9% on time, 6.7% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Air traffic control & airport congestion43%
  • Late-arriving aircraft34%
  • Airline (crew, maintenance, cleaning, fueling)19%
  • Extreme weather4%
  • Security0%

Other airlines on EWR to BOS

2,688 United Airlines flights tracked on this route; 79 cancelled, 0 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.