Flight number record
F9 3442
Frontier Airlines · Atlanta to Miami
- Route
- ATL → MIA
- Departs
- 22:50
- Flights
- 305
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 48.6% of flights arrive inside the 15-minute window, 29 points worse than the national rate of 77.3%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 305 flights, with a median arrival 17 minutes late.
The national on-time rate over the same period is 77.3%, so F9 3442 runs 29 points behind the country as a whole. Across a thousand flights that is about 287 extra late arrivals.
Key figures
On time
48.6%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
2.95%
National rate is 1.89%
1 hour+ late
28.0%
National rate is 8.3%
These figures cover 305 flights between September 2025 and August 2026. Beyond the headline rate, 28.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 305 flights, with 20:55 (63 flights) and 22:45 (39 flights) next.
- Departs 22:5076 flights24.9%
- Departs 20:5563 flights20.7%
- Departs 22:4539 flights12.8%
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 22:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and F9 3442 runs 21 points worse at 48.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
F9 3442 next to ATL to MIA
Every carrier on ATL to MIA combined arrived on time 71.2% of the time across 6,280 flights, so F9 3442 is 23 points behind it. Frontier flew 937 flights on the same city pair under all its flight numbers, including this one, and those ran 63.4% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 24 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3442thin sample | 305 | 48.6% | 89 min | 2.95% | F |
| All Frontier Airlines on ATL–MIA | 937 | 63.4% | 96 min | 1.60% | D |
| All carriers on ATL–MIA | 6,280 | 71.2% | 73 min | 1.61% | C |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 3442 quarter by quarter
F9 3442 did not run the same all year. Its best quarter was Oct–Dec 2025 at 54.1% on time and its weakest Jul–Sep 2026 at 32.8%, a swing of 21 points on roughly 76 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 202517 flights—
- Oct–Dec 202562 flights54.1%
- Jan–Mar 202676 flights48.6%
- Apr–Jun 202689 flights53.5%
- Jul–Sep 202661 flights32.8%
Scale runs 25% to 60%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3442 did best on Wednesday at 63.3% on time and worst on Saturday at 39.0%. Each day rests on about 44 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 3442 runs when it is late
When F9 3442 is late it tends to be very late: 83 of its 152 late arrivals were an hour or more behind, and 36 were two hours or more.
- 15+ min early55 flights18.6%
- Within 15 min89 flights30.1%
- 15–29 min late30 flights10.1%
- 30–59 min late39 flights13.2%
- 1–2 hours late47 flights15.9%
- 2+ hours late36 flights12.2%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 163 departures that left 15 minutes late or more, only 17 made it up before arrival. 6 flights left on time and still arrived late.
The worst days
Worst days for F9 3442
The latest arrival of the period was on 10 November 2025, 8 hours 11 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On four of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 November 2025 | 8 hours 11 minutes | Carrier |
| 9 March 2026 | 4 hours 56 minutes | Late-arriving aircraft |
| 22 May 2026 | 4 hours 55 minutes | Late-arriving aircraft |
| 15 February 2026 | 4 hours 39 minutes | Late-arriving aircraft |
| 17 May 2026 | 4 hours 25 minutes | Late-arriving aircraft |
Delay causes
Why F9 3442 runs late
Late-arriving aircraft accounts for 70% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 70%Late-arriving aircraft
- 29%Carrier
- 2%National Airspace System
- 0%Extreme weather
70% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 70 to one. The split is drawn from 13,445 delay minutes reported on F9 3442.
Cancellations run at 2.95%, against 1.89% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
28.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
Every one of the 305 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. 305 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, the cancellation rate is the figure to plan around on F9 3442: 2.95% of its 305 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
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 route83.7%
- Delta Air Lines 1332 on the same route82.2%
- Delta Air Lines 1588 on the same route64.2%
- Delta Air Lines 1323 on the same route62.4%
- Delta Air Lines 1579 on the same route75.3%
- Frontier Airlines 4406 on the same route72.5%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.