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

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

72.3% of 1,995 official scheduled PHL-to-SFO flights arrived on time; 18.1% arrived at least 30 minutes late and 1.3% 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 SIGNALGenerally reliable
72.3%arrived on time
18.1%30+ min late
1.3%cancelled
1,995scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.6%all scheduled flights
120+ minutes late4.1%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+10.9 mincompleted flights

Which departure time was most reliable for PHL to SFO?

Among qualifying PHL-to-SFO departure window results, Early morning had the highest on-time rate: 82.5% of 833 flights. Evening was lowest at 60.7% across 698 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning83382.5%8.8%1.1%
Late morning6061.7%30.0%0.0%
Afternoon36372.5%18.7%1.1%
Evening69860.7%28.4%1.6%
Night4175.6%9.8%4.9%

Which weekday was most reliable for PHL to SFO?

Among qualifying PHL-to-SFO weekday results, Tuesday had the highest on-time rate: 79.2% of 264 flights. Thursday was lowest at 66.7% across 297 flights.

DayFlightsOn time30+ minCancelled
Monday30369.0%20.1%2.6%
Tuesday26479.2%10.6%0.8%
Wednesday27276.8%16.5%1.5%
Thursday29766.7%22.6%0.3%
Friday30270.2%20.2%1.0%
Saturday25974.9%15.8%0.0%
Sunday29870.8%19.5%2.7%

Which airline was most reliable for PHL to SFO?

Among qualifying PHL-to-SFO airline results, American Airlines had the highest on-time rate: 72.3% of 1,288 flights. United Airlines was lowest at 72.3% across 707 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,28872.3%17.8%1.7%
United Airlines70772.3%18.7%0.6%

Which month was most reliable for PHL to SFO?

Among qualifying PHL-to-SFO month results, September 2025 had the highest on-time rate: 86.8% of 167 flights. June 2026 was lowest at 56.5% across 230 flights.

MonthFlightsOn time30+ minCancelled
July 202518267.0%23.1%2.2%
August 202516771.9%18.0%0.6%
September 202516786.8%7.8%0.0%
October 202518080.6%7.8%0.0%
November 202514785.7%9.5%0.0%
December 202515964.2%23.9%0.6%
January 202612566.4%18.4%7.2%
February 202611775.2%16.2%4.3%
March 202614882.4%12.2%0.7%
April 202616271.0%17.9%0.0%
May 202621168.2%21.3%0.9%
June 202623056.5%33.0%1.3%

What drove PHL to SFO delay minutes?

National airspace was the largest recorded PHL-to-SFO delay category, accounting for 42.9% of 38,855 BTS-attributed delay minutes during July 2025–June 2026.

Airline23.6%
Late aircraft21.9%
National airspace42.9%
Weather11.5%
Security0.0%
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.