Flight number record
F9 4556
Frontier Airlines · Atlanta to Orlando
- Route
- ATL → MCO
- Departs
- 08:14
- Flights
- 301
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 4556, check with Frontier Airlines.
F9 4556 lands a B, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 301 flights, with a median arrival 8 minutes early.
Key figures
On time
76.3%
Arrivals under 15 minutes late, of 295 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
1.99%
National rate is 1.89%
1 hour+ late
8.5%
National rate is 8.3%
These figures cover 301 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 4556 flies
F9 4556 flies ATL to MCO without a single fixed slot. Its most common scheduled departure was 08:14, used on 44 of 301 flights.
- Departs 08:1444 flights14.6%
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 08:14 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and F9 4556 runs 8 points worse at 76.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
F9 4556 next to ATL to MCO
Every carrier on ATL to MCO combined arrived on time 70.3% of the time across 8,267 flights, so F9 4556 is 6 points ahead of it. Frontier flew 1,270 flights on the same city pair under all its flight numbers, including this one, and those ran 64.8% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 4556thin sample | 301 | 76.3% | 95 min | 1.99% | B |
| All Frontier Airlines on ATL–MCO | 1,270 | 64.8% | 117 min | 2.20% | D |
| All carriers on ATL–MCO | 8,267 | 70.3% | 75 min | 1.58% | C |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 4556 quarter by quarter
F9 4556 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.5% on time and its weakest Jul–Sep 2026 at 57.1%, a swing of 31 points on roughly 75 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 202529 flights—
- Oct–Dec 202591 flights74.7%
- Jan–Mar 202689 flights88.5%
- Apr–Jun 202648 flights71.7%
- Jul–Sep 202644 flights57.1%
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, F9 4556 did best on Wednesday at 85.1% on time and worst on Saturday at 66.0%. Each day rests on about 43 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 4556 runs when it is late
F9 4556 often beats the schedule: 88 of 295 completed flights, 30%, arrived 15 minutes or more early. The 70 late arrivals split 24 under half an hour, 21 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early88 flights29.8%
- Within 15 min137 flights46.4%
- 15–29 min late24 flights8.1%
- 30–59 min late21 flights7.1%
- 1–2 hours late10 flights3.4%
- 2+ hours late15 flights5.1%
Scale runs 0% to 100%.
Share of 295 completed flights by arrival against schedule.
10 of 70 late departures made up the time and arrived on time, 14% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for F9 4556
The latest arrival of the period was on 5 January 2026, 14 hours 38 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 January 2026 | 14 hours 38 minutes | Late-arriving aircraft |
| 23 June 2026 | 10 hours 37 minutes | Late-arriving aircraft |
| 20 November 2025 | 8 hours 30 minutes | Late-arriving aircraft |
| 11 August 2026 | 7 hours 55 minutes | Carrier |
| 30 July 2026 | 4 hours 1 minute | Late-arriving aircraft |
Delay causes
Why F9 4556 runs late
Late-arriving aircraft accounts for 65% of the 6,674 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Late-arriving aircraft
- 24%Carrier
- 10%National Airspace System
65% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,674 reported delay minutes here, that single category outweighs weather by 65 to one. The split is drawn from 6,674 delay minutes reported on F9 4556.
Cancellations sit at 1.99% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
8.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
Every one of the 301 flights under F9 4556 in the data flew ATL to MCO. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 301 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 F9 4556
For a booking, read F9 4556 as 76.3% on time with 1.99% cancelled over 301 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to MCO, every carrier and departure
- MCO to ATL, the return direction
- Delta Air Lines 1658 on the same route83.4%
- Delta Air Lines 1030 on the same route80.2%
- Delta Air Lines 1213 on the same route86.9%
- Delta Air Lines 1497 on the same route57.1%
- Delta Air Lines 1742 on the same route55.5%
- Delta Air Lines 664 on the same route84.0%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Orlando International (MCO) delay statistics
- Frontier Airlines on-time record
- Every Frontier 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 Frontier 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.