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Route Reliability

Philadelphia → San Francisco

PHL–SFO · 2,522 miles · Philadelphia International Airport to San Francisco International Airport

78
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
9 min
Average arrival delay
1.3%
Cancelled
1,915
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines76%685 flights
  2. 2.American Airlines76%1,230 flights

What the data says

Morning-you made the right choice.

PHL–SFO flights departing between 6–9 AM arrived on time 86% of the time, versus 65% between 6–9 PM.

Skip Thursday if you can.

PHL–SFO flights arrived on time 82% of the time on Wednesdays. On Thursdays: 71%.

Not much between United Airlines and American Airlines.

On this route they all land within 76% to 76% on time. Pick on schedule and price.

Ticking up lately.

PHL–SFO flights arrived on time 76% of the time over the last three months in the data, compared with 72% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon77%(280 flights)
  • Tue77%(249 flights)
  • Wed82%(255 flights)
  • Thu71%(283 flights)
  • Fri72%(288 flights)
  • Sat78%(249 flights)
  • Sun75%(284 flights)
On-time by departure window
  • 6–9 AM86%(819 flights)
  • 9 AM–12 PM77%(34 flights)
  • 3–6 PM72%(428 flights)
  • 6–9 PM65%(597 flights)
  • 9 PM–12 AM80%(10 flights)
On-time trend by month
72%
May

Jun 68% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%148
July 202569%178
August 202573%166
September 202587%166
October 202583%180
November 202587%147
December 202566%158
January 202672%116
February 202679%112
March 202684%147
April 202673%162
May 202672%208

Same trip, other airports

Keep nerding

Based on 1,915 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.