Flight number record

F9 4556

Frontier Airlines · Atlanta to Orlando

Route: ATL → MCO
Departs: 08:14
Flights: 315
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 4556, check with Frontier Airlines.

F9 4556 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 315 flights, with a median arrival 7 minutes early.

On time

79.1%

Arrivals under 15 minutes late, of 311 completed flights

Avg delay

93 min

Across delayed arrivals only, not all flights

Cancelled

1.27%

National rate is 1.81%

1 hour+ late

6.8%

National rate is 8.1%

These figures cover 315 flights between July 2025 and June 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

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 315 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:1444 flights14.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 84.1%, and F9 4556 runs 5 points worse at 79.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

F9 4556 next to ATL to MCO

Every carrier on ATL to MCO combined arrived on time 70.7% of the time across 8,211 flights, so F9 4556 is 8 points ahead of it. Frontier flew 1,181 flights on the same city pair under all its flight numbers, including this one, and those ran 65.6% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight beats by 6 points.

F9 4556 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 4556thin sample	315	79.1%	93 min	1.27%	B
All Frontier Airlines on ATL–MCO	1,181	65.6%	112 min	1.61%	C
All carriers on ATL–MCO	8,211	70.7%	73 min	1.36%	C
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	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 Apr–Jun 2026 at 71.7%, a swing of 17 points on roughly 79 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 202587 flights78.2%
Oct–Dec 202591 flights74.7%
Jan–Mar 202689 flights88.5%
Apr–Jun 202648 flights71.7%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, F9 4556 did best on Thursday at 90.7% on time and worst on Saturday at 66.0%. Each day rests on about 45 flights, so a gap of 25 points is worth noticing but could still narrow in another year.

Delay causes

Why F9 4556 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 71% of the 6,043 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
71%
Carrier
21%
National Airspace System
8%

71% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 6,043 reported delay minutes here, that single category outweighs weather by 71 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 6,043 delay minutes reported on F9 4556.

Cancellations sit at 1.27% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 315 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. 315 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 79.1% on time with 1.27% cancelled over 315 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures