Flight profile · Frontier Airlines
F91542
Orlando (MCO) to Philadelphia (PHL) · scheduled 5:01 AM – 7:32 AM
How F91542 performs
657 operations, November 2023 – July 2026.
F91542 arrived on time 87.4% of the time, against 72.2% for all MCO → PHL flights, so this departure is 15.2 percentage points better than the route as a whole. Against Frontier Airlines’ own flights on this route it is 17.0 points better.
Source: US DOT Bureau of Transportation Statistics · 657 operations, November 2023 – July 2026 · If F91542 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How F91542 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the carrier's own average on this route, better than 99% of 11,589 comparable flight numbers.
87.4% on time for this specific departure, against 70.4% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where F91542 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| F91542 | 87.4% | 1.83% | -11 min | 4.5% | 657 |
| Frontier Airlines on MCO → PHL | 70.4% | 2.22% | -3 min | 13.4% | 5,323 |
| All MCO → PHL flights | 72.2% | 2.01% | -3 min | 12.2% | 17,463 |
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
Why F91542 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all 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
Share of the delay minutes US DOT attributed to each cause for F91542 on MCO → PHL. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies F91542 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, F91542 pushed back an average of 3 minutes late; when it came in on time or early, an average of 1 minute early.
Each departure is matched to the flight the same aircraft flew into MCO just before it, using the tail number in the DOT file, 519 of 645 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| F91542 | 30% | 15% | 11% |
| Network, same turn | 33% | 24% | 11% |
The schedule leaves a long gap on the ground, which gives a late aircraft room to catch up before this flight pushes back.
The network row is every flight with a scheduled turn of 3 to 6 hours. How often F91542’s aircraft landed 15 or more minutes late is lower than the network’s and, once the aircraft was late, how often F91542 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – July 2026
From pushback to gate
When it leaves MCO late, does that still matter by the time it reaches PHL?
F91542 pushes back an average of 3.1 minutes late and reaches the gate at PHL an average of 1.6 minutes early. The 4.7 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 17.7 minutes on the taxiways at MCO, 2.4 minutes longer than a typical MCO departure in the same hour.
On arrival at PHL, F91542 spends 13.0 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 4.8 minutes longer than a typical PHL arrival (8.2 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached PHL. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 10,440 departures from MCO scheduled in the clock hour F91542 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at PHL (305,143 flights), not just F91542’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
The hour it leaves MCO
Part of any flight’s record belongs to the clock rather than to the flight. F91542 has one departure time, so this is what that time is worth.
On-time arrival rate. 10,440 departures from MCO are scheduled in the 5 AM–6 AM hour over the period, against 498,221 across the whole day.
F91542 is scheduled out of MCO at 5:01 AM, in the 5 AM–6 AM bank. Departures from MCO in that hour arrive on time 92.5% of the time against 74.8% across the airport’s whole day — the slot alone is worth 17.8 points better before anything about this particular flight is considered.
The two airport figures cover every departure from MCO to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026 · Hours below 120 departures are not scored.
Other routes F91542 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 |
|---|---|---|---|
| DEN→CLE Denver to Cleveland | August 16, 2023 – September 4, 2023 | 9 | — |
Because the same number has served different journeys, the statistics above describe only the route F91542 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
26 min late
against a median of 11 min early
Percentiles over 657 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| F91542 this flight | Frontier Airlines | 87.4% | 11 min early | 657 |
| F92416 | Frontier Airlines | 78.2% | 6 min early | 778 |
| AA2084 | American Airlines | 73.9% | 3 min early | 683 |
| F92506 | Frontier Airlines | 71.4% | 6 min early | 744 |
| F94170 | Frontier Airlines | 65.1% | 1 min early | 616 |
| AA2502 | American Airlines | 53.1% | 12 min late | 660 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. F91542 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 657 records of F91542 operating MCO → 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.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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