Flight number record

F9 4725

Frontier Airlines · San Juan to Orlando

Route: SJU → MCO
Departs: 15:19
Flights: 279
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 4725, check with Frontier Airlines.

F9 4725 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about 2.1 hours behind schedule. Build slack into anything you connect to. That rests on 279 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.6%, so F9 4725 runs 11 points behind the country as a whole. Across a thousand flights that is about 109 extra late arrivals.

On time

66.7%

Arrivals under 15 minutes late, of 273 completed flights

Avg delay

127 min

Across delayed arrivals only, not all flights

Cancelled

1.43%

National rate is 1.81%

1 hour+ late

16.8%

National rate is 8.1%

These figures cover 279 flights between July 2025 and June 2026. Beyond the headline rate, 16.8% 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 4725 flies

F9 4725 flies SJU to MCO without a single fixed slot. Its most common scheduled departure was 15:19, used on 34 of 279 flights, with 16:42 (28 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:1934 flights12.2%
Departs 16:4228 flights10.0%

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 15:19 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and F9 4725 runs 6 points worse at 66.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

F9 4725 next to SJU to MCO

Every carrier on SJU to MCO combined arrived on time 78.9% of the time across 6,048 flights, so F9 4725 is 12 points behind it. Frontier flew 1,240 flights on the same city pair under all its flight numbers, including this one, and those ran 78.9% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 7 points.

F9 4725 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 4725thin sample	279	66.7%	127 min	1.43%	C
All Frontier Airlines on SJU–MCO	1,240	78.9%	138 min	1.37%	B
All carriers on SJU–MCO	6,048	78.9%	79 min	1.01%	B
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	C

Across the year

F9 4725 quarter by quarter

Quarter by quarter F9 4725 held fairly steady: 68.1% in Jul–Sep 2025, 68.2% in Oct–Dec 2025, 60.9% in Jan–Mar 2026 and 69.2% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202574 flights68.1%
Oct–Dec 202544 flights68.2%
Jan–Mar 202670 flights60.9%
Apr–Jun 202691 flights69.2%

Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, F9 4725 ranged from 59.5% on Monday to 70.5% on Friday. With about 40 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why F9 4725 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 81% of the 12,000 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
81%
Carrier
15%
National Airspace System
4%

81% 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 12,000 reported delay minutes here, that single category outweighs weather by 81 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 11,574 delay minutes reported on F9 4725.

Cancellations sit at 1.43% against a national 1.81%, which is ordinary. Diversions add another 0.72%.

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. 16.8% 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 279 flights under F9 4725 in the data flew SJU 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. 279 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 4725

For a booking, F9 4725 is a flight to put a long connection behind. 16.8% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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