Flight number record

F9 4726

Frontier Airlines · Orlando to San Juan

Route: MCO → SJU
Departs: 23:40
Flights: 342
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 4726, check with Frontier Airlines.

F9 4726 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 342 flights, with a median arrival 5 minutes early.

On time

73.7%

Arrivals under 15 minutes late, of 339 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

0.88%

National rate is 1.81%

1 hour+ late

9.1%

National rate is 8.1%

These figures cover 342 flights between July 2025 and June 2026. Beyond the headline rate, 9.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When F9 4726 flies

F9 4726 flies MCO to SJU without a single fixed slot. Its most common scheduled departure was 23:40, used on 82 of 342 flights, with 23:00 (71 flights) and 23:10 (47 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:4082 flights24.0%
Departs 23:0071 flights20.8%
Departs 23:1047 flights13.7%

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 23:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and F9 4726 runs 3 points better at 73.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

F9 4726 next to MCO to SJU

Every carrier on MCO to SJU combined arrived on time 73.0% of the time across 6,054 flights, so F9 4726 is about level with it. Frontier flew 1,242 flights on the same city pair under all its flight numbers, including this one, and those ran 73.6% on time. Across its whole network Frontier Airlines managed 73.2%, close to this flight's figure.

F9 4726 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 4726thin sample	342	73.7%	67 min	0.88%	C+
All Frontier Airlines on MCO–SJU	1,242	73.6%	80 min	1.37%	C
All carriers on MCO–SJU	6,054	73.0%	63 min	0.94%	C+
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	C

Across the year

F9 4726 quarter by quarter

F9 4726 did not run the same all year. Its best quarter was Oct–Dec 2025 at 82.7% on time and its weakest Jul–Sep 2025 at 64.0%, a swing of 19 points on roughly 86 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 202589 flights64.0%
Oct–Dec 202582 flights82.7%
Jan–Mar 202681 flights65.8%
Apr–Jun 202690 flights82.2%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, F9 4726 did best on Wednesday at 83.0% on time and worst on Sunday at 60.0%. Each day rests on about 49 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why F9 4726 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 5,928 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
55%
Carrier
35%
Extreme weather
5%
National Airspace System
5%

55% 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 5,928 reported delay minutes here, that single category outweighs weather by 10 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 5,928 delay minutes reported on F9 4726.

Cancellations are rare at 0.88%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 1,188 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 342 flights under F9 4726 in the data flew MCO to SJU. 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. 342 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 4726

For a booking, read F9 4726 as 73.7% on time with 0.88% cancelled over 342 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