GSO to PHL flight delays & on-time performance
Nonstop flights from Piedmont Triad International Airport to Philadelphia International Airport · 365 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GSO or PHL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Greensboro/High Point (GSO) to Philadelphia (PHL) arrived on time 65% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 5.2% were cancelled, and 17% arrived an hour or more late.
- Republic Airways was the most punctual airline here (68% on time); PSA Airlines was the least (64%).
- Departures scheduled around 6pm did best (68% on time); around 5pm did worst (59%).
- Tuesday was the most reliable day to fly (80% on time) and Wednesday the least (47%).
- The largest source of delay minutes was late-arriving aircraft (65%).
Which airline is most on time from GSO to PHL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 68% | 2.9% | 17 min | 5.9% | 35 |
| PSA AirlinesRegional airline operating American Eagle flights. | 64% | 6.0% | 31 min | 21.3% | 100 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5pm59%79 flights
- 6pm68%49 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%9.1% cancelled
- Tuesday80%11.8% cancelled
- Wednesday47%5.6% cancelled
- Thursday65%4.2% cancelled
- Friday55%0.0% cancelled
- Saturday89%0.0% cancelled
- Sunday64%4.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft65%
- Air traffic control & airport congestion16%
- Extreme weather12%
- Airline (crew, maintenance, cleaning, fueling)7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather86%
- Air traffic control & airport congestion14%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
GSO to PHL: common questions
- How often are GSO to PHL flights on time?
- 65% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Greensboro/High Point to Philadelphia cancelled?
- 5.2% of scheduled flights were cancelled (7 of 135).
- How long are typical delays?
- Across all flights the average arrival delay was 27 min (early arrivals count as zero). Flights that were late arrived 74 min behind schedule on average, and 17.2% of flights were an hour or more late.
- How long is taxi time at GSO?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHL to GSO — 72% on time
More flights from Greensboro/High Point
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: GSO → PHL, nonstop flights by US airlines that report to the DOT. How we calculate this.