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588 km · Domestic

Piedmont Triad (GSO) – Philadelphia (PHL)

In July 2026, 50 flights operated between Piedmont Triad and Philadelphia (both directions), and 44.0% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods11 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January–––
February–––
March–––
April–2–
May5018▼ 64.0%
June5549▼ 10.9%
July2050▲ 150.0%
August50––
September38––
October50–in progress
November–––
December1––

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods11 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January–––
February–––
March–––
April–100.0%–
May82.0%66.7%▼ 18.7%
June56.4%53.1%▼ 5.9%
July50.0%44.0%▼ 12.0%
August74.0%––
September84.2%––
October76.0%–in progress
November–––
December100.0%––

Cancelled flights by month

The most recent periods11 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January–––
February–––
March–––
April–0–
May20▼ 100.0%
June53▼ 40.0%
July24▲ 100.0%
August2––
September0––
October2–in progress
November–––
December0––

Airlines on this route

  1. PSA Airlines 78.7%
  2. Republic Airways 21.3%

Oct 1, 2024 – Jul 31, 2026

By direction

GSO → PHL

Scheduled flights
207
Flights operated
193
Cancelled
14 · 6.8%
On-time departures
64.8%

PHL → GSO

Scheduled flights
206
Flights operated
200
Cancelled
6 · 2.9%
On-time departures
68.5%

GSO → PHL and PHL → GSO counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
PSA Airlines OH 325 78.7% 64.8% 18
Republic Airways YX 88 21.3% 73.3% 2

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 25, 2024 → Jul 31, 2026

Recorded flights413GSO–PHL

Departure hour

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 09:00 · 30 · 30 recorded · 29 measured · Source: the US BTS 10:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 11:00 · 31 · 31 recorded · 30 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 14:00 · 9 · 9 recorded · 9 measured · Source: the US BTS 15:00 · 86 · 86 recorded · 84 measured · Source: the US BTS 16:00 · 87 · 87 recorded · 84 measured · Source: the US BTS 17:00 · 82 · 82 recorded · 77 measured · Source: the US BTS 18:00 · 79 · 79 recorded · 71 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—11
06:00No observations———
07:00No observations———
08:00Fewer than 200 measured departures—22
09:00Fewer than 200 measured departures—2930
10:00Fewer than 200 measured departures—11
11:00Fewer than 200 measured departures—3031
12:00No observations———
13:00Fewer than 200 measured departures—55
14:00Fewer than 200 measured departures—99
15:00Fewer than 200 measured departures—8486
16:00Fewer than 200 measured departures—8487
17:00Fewer than 200 measured departures—7782
18:00Fewer than 200 measured departures—7179
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 65 · 65 recorded · 61 measured · Source: the US BTS Tuesday · 52 · 52 recorded · 47 measured · Source: the US BTS Wednesday · 54 · 54 recorded · 51 measured · Source: the US BTS Thursday · 65 · 65 recorded · 61 measured · Source: the US BTS Friday · 62 · 62 recorded · 61 measured · Source: the US BTS Saturday · 44 · 44 recorded · 44 measured · Source: the US BTS Sunday · 71 · 71 recorded · 68 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—6165
TuesdayFewer than 200 measured departures—4752
WednesdayFewer than 200 measured departures—5154
ThursdayFewer than 200 measured departures—6165
FridayFewer than 200 measured departures—6162
SaturdayFewer than 200 measured departures—4444
SundayFewer than 200 measured departures—6871

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · No observations · 0 recorded · 0 measured · Source: the US BTS Feb · No observations · 0 recorded · 0 measured · Source: the US BTS Mar · No observations · 0 recorded · 0 measured · Source: the US BTS Apr · 2 · 2 recorded · 2 measured · Source: the US BTS May · 70 · 70 recorded · 68 measured · Source: the US BTS Jun · 112 · 112 recorded · 104 measured · Source: the US BTS Jul · 76 · 76 recorded · 70 measured · Source: the US BTS Aug · 52 · 52 recorded · 50 measured · Source: the US BTS Sep · 38 · 38 recorded · 38 measured · Source: the US BTS Oct · 60 · 60 recorded · 58 measured · Source: the US BTS Nov · No observations · 0 recorded · 0 measured · Source: the US BTS Dec · 3 · 3 recorded · 3 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanNo observations———
FebNo observations———
MarNo observations———
AprFewer than 200 measured departures—22
MayFewer than 200 measured departures—6870
JunFewer than 200 measured departures—104112
JulFewer than 200 measured departures—7076
AugFewer than 200 measured departures—5052
SepFewer than 200 measured departures—3838
OctFewer than 200 measured departures—5860
NovNo observations———
DecFewer than 200 measured departures—33

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 63.4% 262
  • Delayed >15 min 31.7% 131
  • Cancelled 4.8% 20
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

4
Flight numbersBy direction DeparturesOn time
OH5518 GSO → PHL 62 45.6%
OH5518 PHL → GSO 62 56.7%
OH5558 PHL → GSO 30 86.2%
OH5558 GSO → PHL 30 82.8%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 50 +150.0% 4 44.0%
June 2026 49 −10.9% 3 53.1%
May 2026 18 −64.0% 0 66.7%
April 2026 2 0 100.0%
December 2025 1 −50.0% 0 100.0%
October 2025 50 +525.0% 2 76.0%
September 2025 38 0 84.2%
August 2025 50 2 74.0%
July 2025 20 2 50.0%
June 2025 55 5 56.4%
May 2025 50 2 82.0%
December 2024 2 0 100.0%
October 2024 8 0 100.0%

How to read this chart

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