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Route · GSO → PHL · 2020–2025 BTS data

Greensboro/High Point to Philadelphia

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSO to PHL (Greensboro/High Point to Philadelphia) ranks #4919 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

76.5%
On-time
-2.5 pts
vs US avg
107 min
Delay when late
503
Flights
#4919 of 4927
Corpus placement

Cancelled

5.6%

Best Month

Apr 2022 90%

Worst Month

Jul 2021 48%

Distance

365 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Jun 2025 30 10 5 0 OH,YX
Apr 2022 52 5 0 0 OH,YX
Oct 2021 33 7 0 0 OH,YX
Sep 2021 43 11 0 0 OH
Aug 2021 39 14 2 1 OH
Jul 2021 52 27 2 0 OH
Jun 2021 44 14 2 0 OH
Aug 2020 57 8 2 0 OH,YX
Jul 2020 58 6 1 0 OH,YX
Mar 2020 60 7 13 0 MQ
Feb 2020 35 9 1 0 MQ,OH

GSO–PHL seasonal on-time pattern

Best: April (90.4%) · weakest: June (67.6%)

60%70%80%90%100% FebMarAprJunJulAugSepOct 78.8%

Strongest calendar month

April

90.4% on-time · ~52 flights/mo

Busiest calendar month

March

~60 flights/mo avg

Weakest calendar month

June

67.6% on-time · ~37 flights/mo

Cancellation Rate

5.6%

28 of 503 flights

Diversion Rate

0.2%

1 of 503 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

GSO - Greensboro/High Point

Full on-time, delay-cause, and seasonal performance for Greensboro/High Point, NC.

GSO on-time profile

PHL - Philadelphia

Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.

PHL on-time profile

Compare the two airports

See GSO and PHL side by side on delays, cancellations, and reliability.

Compare GSO vs PHL

Origin-hub reliability standing

Mid-pack among GSO departures

From GSO, this corridor sits with 7 other 75–85% on-time routes out of 11 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 0 below 75%). Destination: Philadelphia · fleet on-time rank #4205 of 4927.

What the Data Says About GSO to PHL

The Greensboro/High Point to Philadelphia corridor (GSO to PHL) posts a 76.5% on-time rate on the lower edge of the average band, based on 503 tracked flights. Late flights run 107.1 minutes behind on average. 4 carriers cover the 365-mile route; over the last 24 months, 28 of 503 flights were cancelled (5.6%) and 0.2% diverted.

The monthly split is wide on this route: Apr 2022 posted the strongest performance at 90% on-time, while Jul 2021 came in at just 48% - a 42-point swing worth factoring into travel timing.

On the multi-year calendar, GSO–PHL peaks in April at 90.4% on-time while March carries the heaviest traffic (~60 flights per month) ; the softest month is June at 67.6%, a 22.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GSO to PHL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GSO to PHL ranks #4919 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from GSO to PHL? ▼
Flights from Greensboro/High Point to Philadelphia have a 76.5% on-time rate based on 503 flights. The average delay is 107.1 minutes. The best recent month was Apr 2022 with 90% on-time.
What is the cancellation rate for GSO to PHL? ▼
Over the last 24 months, 5.6% of flights on this route were cancelled (28 of 503 flights) and 0.2% were diverted.
How far is the flight from GSO to PHL? ▼
The flight distance from Greensboro/High Point (GSO) to Philadelphia (PHL) is approximately 365 miles. This route is served by 4 carriers.
When is the best time to fly from GSO to PHL? ▼
The best recent month for on-time performance was Apr 2022 (90% on-time). The worst was Jul 2021 (48% on-time). Consider booking during months with historically better performance.

Airports on this route

GSO Airport

Greensboro/High Point
PHL Airport

Philadelphia
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using GSO–PHL data

GSO–PHL is mid-pack at 76.5% on-time; month and carrier mix move more than the corridor headline.

  • Compare GSO and PHL airport profiles: delay causes and top routes differ even on the same corridor. GSO airport
  • If your dates flex, April (90.4% on-time) beats June (67.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 76.5% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.