Flight number record
F9 3442
Frontier Airlines · Atlanta to Miami
- Route
- ATL → MIA
- Departs
- 22:50
- Flights
- 291
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 3442, check with Frontier Airlines.
F9 3442 earns an F, which is as low as this site's scale goes for a reason. Only 54.6% of flights arrive inside the 15-minute window, 23 points worse than the national rate of 77.6%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 291 flights, with a median arrival 9 minutes late.
The national on-time rate over the same period is 77.6%, so F9 3442 runs 23 points behind the country as a whole. Across a thousand flights that is about 230 extra late arrivals.
Key figures
On time
54.6%
Arrivals under 15 minutes late, of 284 completed flights
Avg delay
85 min
Across delayed arrivals only, not all flights
Cancelled
2.41%
National rate is 1.81%
1 hour+ late
24.3%
National rate is 8.1%
These figures cover 291 flights between July 2025 and June 2026. Beyond the headline rate, 24.3% 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 3442 flies
F9 3442 flies ATL to MIA without a single fixed slot. Its most common scheduled departure was 22:50, used on 76 of 291 flights, with 22:45 (39 flights) and 20:45 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:5076 flights26.1%
- Departs 22:4539 flights13.4%
- Departs 20:4534 flights11.7%
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 22:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and F9 3442 runs 16 points worse at 54.6%. 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 3442 next to ATL to MIA
Every carrier on ATL to MIA combined arrived on time 71.0% of the time across 6,229 flights, so F9 3442 is 16 points behind it. Frontier flew 864 flights on the same city pair under all its flight numbers, including this one, and those ran 65.3% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3442thin sample | 291 | 54.6% | 85 min | 2.41% | F |
| All Frontier Airlines on ATL–MIA | 864 | 65.3% | 91 min | 1.62% | C |
| All carriers on ATL–MIA | 6,229 | 71.0% | 71 min | 1.41% | C |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 3442 quarter by quarter
F9 3442 did not run the same all year. Its best quarter was Jul–Sep 2025 at 63.5% on time and its weakest Jan–Mar 2026 at 48.6%, a swing of 15 points on roughly 73 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 202564 flights63.5%
- Oct–Dec 202562 flights54.1%
- Jan–Mar 202676 flights48.6%
- Apr–Jun 202689 flights53.5%
Scale runs 40% to 70%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3442 did best on Friday at 63.4% on time and worst on Sunday at 47.8%. Each day rests on about 42 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 3442 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 68% of the 11,000 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.
- 68%Late-arriving aircraft
- 26%Carrier
- 4%National Airspace System
- 1%Extreme weather
68% 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 11,000 reported delay minutes here, that single category outweighs weather by 52 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 10,986 delay minutes reported on F9 3442.
Cancellations sit at 2.41% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
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. 24.3% 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 594 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 291 flights under F9 3442 in the data flew ATL to MIA. 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. 291 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 3442
For a booking, F9 3442 is a flight to put a long connection behind. 24.3% 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.
Related
Where to go next
- ATL to MIA, every carrier and departure
- MIA to ATL, the return direction
- Delta Air Lines 1510 on the same route82.5%
- Delta Air Lines 1332 on the same route79.2%
- Delta Air Lines 1588 on the same route65.5%
- Delta Air Lines 1579 on the same route73.6%
- Delta Air Lines 1323 on the same route60.3%
- Delta Air Lines 2836 on the same route88.6%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Miami International (MIA) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.