OnTimeRoutes
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American Airlines BOS to PHL on-time performance

American Airlines nonstop flights from Boston to Philadelphia · Aug 2025 – Jul 2026

On-time arrivals
76%
arrived < 15 min late
Cancelled
2.8%
63 flights
Avg arrival delay
26 min
106 min when late
Rank on route
#3 of 4
route average 77% on time

Key facts

  • American Airlines flights on BOS to PHL arrived on time 76% of the time in Aug 2025 – Jul 2026.
  • 2.8% were cancelled, and 11% arrived an hour or more late.
  • That ranks #3 of 4 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (61%).

On-time trend by month

50%75%100%July 2025: 65.3% on time, 7.0% cancelledJul ’25August 2025: 76.6% on time, 2.6% cancelledAug ’25September 2025: 77.3% on time, 1.9% cancelledSep ’25October 2025: 64.3% on time, 0.4% cancelledOct ’25November 2025: 86.0% on time, 3.1% cancelledNov ’25December 2025: 76.4% on time, 1.4% cancelledDec ’25January 2026: 84.1% on time, 8.7% cancelledJan ’26February 2026: 79.2% on time, 7.0% cancelledFeb ’26March 2026: 74.5% on time, 1.4% cancelledMar ’26April 2026: 75.3% on time, 0.0% cancelledApr ’26May 2026: 77.1% on time, 1.4% cancelledMay ’26June 2026: 81.1% on time, 2.1% cancelledJun ’26July 2026: 71.1% on time, 5.9% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft61%
  • Airline (crew, maintenance, cleaning, fueling)28%
  • Air traffic control & airport congestion9%
  • Extreme weather2%
  • Security0%

Other airlines on BOS to PHL

Full BOS to PHL comparison →
American Airlines on-time record across all routes →

2,274 American Airlines flights tracked on this route; 63 cancelled, 1 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.