BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SFO→PHL

San Francisco, CA (SFO) to Philadelphia, PA (PHL) flight delay odds

84.1% of 1,992 official scheduled SFO-to-PHL flights arrived on time; 8.5% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
84.1%arrived on time
8.5%30+ min late
1.4%cancelled
1,992scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.7%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+0.4 mincompleted flights

Which departure time was most reliable for SFO to PHL?

Among qualifying SFO-to-PHL departure window results, Early morning had the highest on-time rate: 89.7% of 668 flights. Late morning was lowest at 75.8% across 360 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning66889.7%5.2%0.9%
Late morning36075.8%14.2%0.6%
Afternoon25178.9%10.8%2.0%
Night69584.7%7.9%2.2%

Which weekday was most reliable for SFO to PHL?

Among qualifying SFO-to-PHL weekday results, Saturday had the highest on-time rate: 85.8% of 261 flights. Sunday was lowest at 80.9% across 298 flights.

DayFlightsOn time30+ minCancelled
Monday30284.1%8.6%2.3%
Tuesday26184.7%6.5%1.1%
Wednesday27385.0%9.9%0.7%
Thursday29885.2%8.7%0.3%
Friday29983.6%9.0%0.7%
Saturday26185.8%6.5%1.1%
Sunday29880.9%9.7%3.4%

Which airline was most reliable for SFO to PHL?

Among qualifying SFO-to-PHL airline results, United Airlines had the highest on-time rate: 86.1% of 706 flights. American Airlines was lowest at 83.0% across 1,286 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,28683.0%8.9%1.9%
United Airlines70686.1%7.8%0.6%

Which month was most reliable for SFO to PHL?

Among qualifying SFO-to-PHL month results, April 2026 had the highest on-time rate: 91.4% of 162 flights. July 2025 was lowest at 70.3% across 182 flights.

MonthFlightsOn time30+ minCancelled
July 202518270.3%17.6%2.2%
August 202516777.8%10.8%0.0%
September 202516688.6%5.4%0.0%
October 202518086.1%6.1%0.0%
November 202514789.1%7.5%0.0%
December 202516087.5%7.5%0.6%
January 202612478.2%6.5%8.9%
February 202611789.7%4.3%5.1%
March 202614791.2%5.4%0.7%
April 202616291.4%4.3%0.0%
May 202621079.5%12.9%1.0%
June 202623084.3%9.1%1.3%

What drove SFO to PHL delay minutes?

Late aircraft was the largest recorded SFO-to-PHL delay category, accounting for 45.0% of 25,504 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.3%
Late aircraft45.0%
National airspace12.7%
Weather0.8%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.