Flight number record
F9 4209
Frontier Airlines · Cleveland to Atlanta
- Route
- CLE → ATL
- Departs
- 19:24
- Flights
- 267
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 4209, check with Frontier Airlines.
F9 4209 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 267 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.6%, so F9 4209 runs 12 points behind the country as a whole. Across a thousand flights that is about 116 extra late arrivals.
Key figures
On time
66.0%
Arrivals under 15 minutes late, of 262 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
1.87%
National rate is 1.81%
1 hour+ late
13.4%
National rate is 8.1%
These figures cover 267 flights between July 2025 and June 2026. Beyond the headline rate, 13.4% 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 4209 flies
F9 4209 flies CLE to ATL without a single fixed slot. Its most common scheduled departure was 19:24, used on 34 of 267 flights, with 18:01 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 19:2434 flights12.7%
- Departs 18:0133 flights12.4%
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 19:24 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and F9 4209 runs 2 points worse at 66.0%. 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 4209 next to CLE to ATL
Every carrier on CLE to ATL combined arrived on time 85.4% of the time across 3,407 flights, so F9 4209 is 19 points behind it. Frontier flew 714 flights on the same city pair under all its flight numbers, including this one, and those ran 70.6% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 4209thin sample | 267 | 66.0% | 77 min | 1.87% | C |
| All Frontier Airlines on CLE–ATL | 714 | 70.6% | 78 min | 2.52% | C |
| All carriers on CLE–ATL | 3,407 | 85.4% | 76 min | 2.05% | A |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 4209 quarter by quarter
F9 4209 did not run the same all year. Its best quarter was Jan–Mar 2026 at 71.9% on time and its weakest Apr–Jun 2026 at 57.3%, a swing of 15 points on roughly 67 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 202592 flights71.1%
- Oct–Dec 202551 flights68.6%
- Jan–Mar 202635 flights71.9%
- Apr–Jun 202689 flights57.3%
Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, F9 4209 did best on Tuesday at 81.6% on time and worst on Friday at 51.4%. Each day rests on about 38 flights, so a gap of 30 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 4209 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 6,878 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.
- 53%Late-arriving aircraft
- 21%National Airspace System
- 13%Carrier
- 13%Extreme weather
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 6,878 delay minutes reported on F9 4209.
Cancellations sit at 1.87% 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. 13.4% 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 554 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 267 flights under F9 4209 in the data flew CLE to ATL. 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. 267 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 4209
For a booking, F9 4209 is a flight to put a long connection behind. 13.4% 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
- CLE to ATL, every carrier and departure
- ATL to CLE, the return direction
- Delta Air Lines 775 on the same route88.3%
- Delta Air Lines 2734 on the same route92.1%
- Delta Air Lines 2978 on the same route89.7%
- Delta Air Lines 2545 on the same route88.7%
- Delta Air Lines 2838 on the same route91.9%
- Frontier Airlines 2409 on the same route72.6%
- Cleveland Hopkins International (CLE) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.