Carrier route record
F9ATL→RSW
Frontier Airlines · Atlanta to Fort Myers
- Flights
- 103
- Period
- July 2025 to June 2026
- Share of route
- 4%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on ATL to RSW draws a D. Roughly one flight in two 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 103 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.6%, so Frontier on ATL to RSW runs 19 points behind the country as a whole. Across a thousand flights that is about 186 extra late arrivals.
Key figures
On time
59.0%
Arrivals under 15 minutes late, of 100 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.94%
National rate is 1.81%
Whole route
77.2%
Every carrier on ATL to RSW, 2,844 flights
These figures cover 103 flights between July 2025 and June 2026. Beyond the headline rate, 15.0% 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.
Carrier by carrier
Frontier against every carrier on ATL to RSW
Frontier flew 103 of the 2,844 flights on ATL to RSW, about 4% of it. Its 59.0% on time is 18 points worse than the route as a whole, which runs 77.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 77.8% to Frontier at 59.0%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 2,741 | 77.8% | 58 min | 1.50% | B |
| Frontier Airlines (this page)thin sample | 103 | 59.0% | 71 min | 1.94% | D |
Departure window
When Frontier runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 103 flights.
- 5am–8am—
- 8am–11am31 flights61.3%
- 11am–2pm7 flights—
- 2pm–5pm50 flights59.6%
- 5pm–8pm15 flights—
- 8pm–5am—
Scale runs 50% to 65%. Rows with fewer than 30 flights show a dash.
The 8am–11am window is the strongest at 61.3% on time. The full set of windows spans 2 points.
Across the year
Frontier on ATL to RSW through the year
- Jul–Sep 202525 flights—
- Oct–Dec 202529 flights—
- Jan–Mar 202639 flights45.9%
- Apr–Jun 202610 flights—
Scale runs 35% to 50%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 59.0% on time across 103 flights.
Split by quarter, Frontier on ATL to RSW logged 25 flights in Jul–Sep 2025, 29 flights in Oct–Dec 2025, 39 flights in Jan–Mar 2026 and 10 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 59.0% annual figure is the one to use.
Delay causes
Why Frontier runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 2,922 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.
- 51%Late-arriving aircraft
- 30%Carrier
- 19%National Airspace System
51% 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 2,922 reported delay minutes here, that single category outweighs weather by 51 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 2,922 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 61.3% on time here.
Cancellations sit at 1.94% against a national 1.81%, which is ordinary. Diversions add another 0.97%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.0% 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 515 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.
The return leg is a different operation and performs like one: it runs 56.0% on time across 103 flights, 3 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.
One caution: this is a thin sample. 103 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 Frontier on ATL to RSW
Put together: treat all of this as provisional. 103 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 59.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 100 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to RSW, every carrier
- Frontier on RSW to ATL, the return leg
- Delta Air Lines on ATL to RSW77.8%
- Frontier Airlines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Southwest Florida International (RSW) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.