OnTimeRoutes
C

United Airlines SJU to EWR on-time performance

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

On-time arrivals
78%
arrived < 15 min late
Cancelled
2.6%
29 flights
Avg arrival delay
23 min
100 min when late
Rank on route
#1 of 4
route average 75% on time

Key facts

  • United Airlines flights on SJU to EWR arrived on time 78% of the time in Aug 2025 – Jul 2026.
  • 2.6% were cancelled, and 9% arrived an hour or more late.
  • That ranks #1 of 4 airlines on this route, which averaged 75% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (65%).

On-time trend by month

40%70%100%July 2025: 54.4% on time, 3.2% cancelledJul ’25August 2025: 71.7% on time, 1.1% cancelledAug ’25September 2025: 76.4% on time, 0.0% cancelledSep ’25October 2025: 76.4% on time, 4.3% cancelledOct ’25November 2025: 78.6% on time, 5.6% cancelledNov ’25December 2025: 79.0% on time, 0.9% cancelledDec ’25January 2026: 70.7% on time, 7.1% cancelledJan ’26February 2026: 79.2% on time, 7.1% cancelledFeb ’26March 2026: 78.5% on time, 0.0% cancelledMar ’26April 2026: 83.1% on time, 1.1% cancelledApr ’26May 2026: 87.0% on time, 1.1% cancelledMay ’26June 2026: 83.1% on time, 1.1% cancelledJun ’26July 2026: 69.0% on time, 2.2% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft65%
  • Airline (crew, maintenance, cleaning, fueling)21%
  • Air traffic control & airport congestion10%
  • Extreme weather4%
  • Security0%

Other airlines on SJU to EWR

Full SJU to EWR comparison →
United Airlines on-time record across all routes →

1,113 United Airlines flights tracked on this route; 29 cancelled, 6 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.