Flight profile · PSA Airlines
OH5620
Knoxville/Maryville (TYS) to Philadelphia (PHL) · scheduled 8:00 AM – 9:50 AM
How OH5620 performs
877 operations, 2023-07-01 to 2026-06-30.
OH5620 arrived on time 87.0% of the time, against 85.1% for all TYS → PHL flights — this specific departure is 1.9 percentage points better than the route as a whole. Against PSA Airlines’s own flights on this route it is 1.8 points better.
Source: US DOT Bureau of Transportation Statistics · 877 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OH5620 | 87.0% | 2.74% | -15 min | 6.1% | 877 |
| PSA Airlines on TYS → PHL | 85.2% | 2.25% | -13 min | 6.8% | 1,202 |
| All TYS → PHL flights | 85.1% | 2.18% | -12 min | 6.5% | 1,284 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does OH5620 run worse on particular days?
Tuesday is historically the most reliable day and Monday the least, a gap of 11.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes OH5620 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| CLT→GSP Charlotte to Greenville/Greer/Spartanburg | 2026-03-08 – 2026-04-06 | 30 | — |
| BDL→PHL Hartford to Philadelphia | 2024-09-04 – 2024-09-04 | 1 | — |
| TYS→CLT Knoxville/Maryville to Charlotte | 2023-08-04 – 2023-08-04 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route OH5620 currently operates. Blending them would produce an average of two different flights.
Why OH5620 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for OH5620 on TYS → PHL. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 877 records of OH5620 operating TYS → PHL, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.