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Route Reliability

Philadelphia → GSO

PHL–GSO · 365 miles · Philadelphia International Airport to GSO Airport

85
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
1 min early
Average arrival delay
1.9%
Cancelled
1,114
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 84% of the time across 1,114 flights. No comparison to make.

What the data says

The late departure is the smart one here.

PHL–GSO flights departing between 9 PM–12 AM arrived on time 93% of the time, versus 78% between 3–6 PM.

Friday is doing you no favors.

PHL–GSO flights arrived on time 90% of the time on Tuesdays. On Fridays: 77%.

Ticking up lately.

PHL–GSO flights arrived on time 91% of the time over the last three months in the data, compared with 86% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon89%(160 flights)
  • Tue90%(153 flights)
  • Wed89%(155 flights)
  • Thu81%(159 flights)
  • Fri77%(160 flights)
  • Sat86%(145 flights)
  • Sun80%(161 flights)
On-time by departure window
  • 6–9 AM91%(253 flights)
  • 9 AM–12 PM91%(181 flights)
  • 12–3 PM—(5 flights)
  • 3–6 PM78%(322 flights)
  • 6–9 PM79%(275 flights)
  • 9 PM–12 AM93%(57 flights)
On-time trend by month
92%
May

Jun 63% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%89
July 202563%88
August 202587%89
September 202593%75
October 202588%110
November 202586%86
December 202582%87
January 202683%84
February 202692%76
March 202685%86
April 202696%114
May 202692%109

Keep nerding

Based on 1,114 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.