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Airport Reliability

PHL · Philadelphia

Philadelphia International Airport

78%
Departures within 15 minutes
15 min
Average departure delay
78%
Arrivals within 15 minutes
2.5%
Departures cancelled

Based on 126,041 departures and 126,028 arrivals. Data through May 2026.

What the data says

Morning flights do better here.

Departures from PHL departing between 3–6 AM arrived on time 87% of the time, versus 67% between 6–9 PM.

Sunday scaries are real for this one.

Departures from PHL arrived on time 82% of the time on Wednesdays. On Sundays: 73%.

Ticking up lately.

Departures from PHL arrived on time 82% of the time over the last three months in the data, compared with 76% in the three months before that.

When PHL gets messy

On-time by departure window
  • 12–3 AM—(2 flights)
  • 3–6 AM87%(2509 flights)
  • 6–9 AM85%(24820 flights)
  • 9 AM–12 PM83%(22697 flights)
  • 12–3 PM78%(19007 flights)
  • 3–6 PM70%(20929 flights)
  • 6–9 PM67%(24138 flights)
  • 9 PM–12 AM75%(8295 flights)
On-time by weekday
  • Mon76%(18088 flights)
  • Tue81%(16419 flights)
  • Wed82%(16666 flights)
  • Thu75%(18197 flights)
  • Fri76%(18450 flights)
  • Sat77%(16164 flights)
  • Sun73%(18413 flights)
On-time trend by month
83%
May

Jun 66% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%10790
July 202566%11007
August 202575%11526
September 202584%10264
October 202579%11418
November 202580%9316
December 202568%9371
January 202677%8446
February 202681%8186
March 202678%9820
April 202684%10856
May 202683%11397

Airlines departing PHL

Busiest routes from PHL

Based on 126,041 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.