Flight number record
OH 5618
PSA Airlines · Philadelphia to Greer
- Route
- PHL → GSP
- Departs
- 17:48
- Flights
- 320
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OH 5618, check with PSA Airlines. PSA Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OH 5618 draws a D−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 320 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so OH 5618 runs 13 points behind the country as a whole. Across a thousand flights that is about 129 extra late arrivals.
Key figures
On time
64.4%
Arrivals under 15 minutes late, of 303 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
5.00%
National rate is 1.89%
1 hour+ late
18.5%
National rate is 8.3%
These figures cover 320 flights between September 2025 and August 2026. Beyond the headline rate, 18.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OH 5618 flies
OH 5618 flies PHL to GSP without a single fixed slot. Its most common scheduled departure was 17:48, used on 92 of 320 flights, with 18:55 (44 flights) and 18:49 (44 flights) next.
- Departs 17:4892 flights28.8%
- Departs 18:5544 flights13.8%
- Departs 18:4944 flights13.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 17:48 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OH 5618 runs 4 points worse at 64.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OH 5618 next to PHL to GSP
Every carrier on PHL to GSP combined arrived on time 69.3% of the time across 441 flights, so OH 5618 is 5 points behind it. Across its whole network PSA Airlines managed 73.5%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OH 5618thin sample | 320 | 64.4% | 96 min | 5.00% | D− |
| All PSA Airlines on PHL–GSP | 441 | 69.3% | 90 min | 3.85% | C− |
| All carriers on PHL–GSP | 441 | 69.3% | 90 min | 3.85% | C− |
| PSA Airlines, whole network | 242,979 | 73.5% | 96 min | 4.80% | C− |
Across the year
OH 5618 quarter by quarter
OH 5618 did not run the same all year. Its best quarter was Jul–Sep 2025 at 76.7% on time and its weakest Jul–Sep 2026 at 42.9%, a swing of 34 points on roughly 64 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights76.7%
- Oct–Dec 202591 flights72.7%
- Jan–Mar 202690 flights72.3%
- Apr–Jun 202647 flights52.2%
- Jul–Sep 202662 flights42.9%
Scale runs 35% to 80%.
By weekday, OH 5618 did best on Monday at 73.3% on time and worst on Saturday at 54.8%. Each day rests on about 46 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OH 5618 runs when it is late
OH 5618 often beats the schedule: 100 of 303 completed flights, 33%, arrived 15 minutes or more early. When OH 5618 is late it tends to be very late: 56 of its 108 late arrivals were an hour or more behind, and 27 were two hours or more.
- 15+ min early100 flights33.0%
- Within 15 min95 flights31.4%
- 15–29 min late32 flights10.6%
- 30–59 min late20 flights6.6%
- 1–2 hours late29 flights9.6%
- 2+ hours late27 flights8.9%
Scale runs 0% to 100%.
Share of 303 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 92 departures that left 15 minutes late or more, only 11 made it up before arrival. In the other direction, 27 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at GSP.
The worst days
Worst days for OH 5618
The latest arrival of the period was on 28 July 2026, 14 hours 51 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 July 2026 | 14 hours 51 minutes | Extreme weather |
| 14 December 2025 | 6 hours 12 minutes | Late-arriving aircraft |
| 10 July 2026 | 5 hours 29 minutes | Late-arriving aircraft |
| 18 January 2026 | 5 hours 23 minutes | Late-arriving aircraft |
| 17 June 2026 | 5 hours 6 minutes | Late-arriving aircraft |
Delay causes
Why OH 5618 runs late
Late-arriving aircraft accounts for 52% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 21%National Airspace System
- 16%Carrier
- 11%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 10,399 delay minutes reported on OH 5618.
Cancellations run at 5.00%, against 1.89% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
18.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 515 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on one other city pair in the data, including MCI to PHL (44), but none flew often enough under OH 5618 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PHL to GSP only.
One caution: this is a thin sample. 320 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking OH 5618
For a booking, the cancellation rate is the figure to plan around on OH 5618: 5.00% of its 320 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Philadelphia International (PHL) delay statistics
- PSA Airlines on-time record
- Every PSA Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means PSA Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.