Carrier route record

F9RSW→ATL

Frontier Airlines · Fort Myers to Atlanta

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 RSW to ATL earns a D, which is as low as this site's scale goes for a reason. Only 56.0% of flights arrive inside the 15-minute window, 22 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 103 flights, with a median arrival 11 minutes late.

The national on-time rate over the same period is 77.6%, so Frontier on RSW to ATL runs 22 points behind the country as a whole. Across a thousand flights that is about 216 extra late arrivals.

On time

56.0%

Arrivals under 15 minutes late, of 100 completed flights

Avg delay

95 min

Across delayed arrivals only, not all flights

Cancelled

2.91%

National rate is 1.81%

Whole route

85.7%

Every carrier on RSW to ATL, 2,843 flights

These figures cover 103 flights between July 2025 and June 2026. Beyond the headline rate, 22.0% 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 RSW to ATL

Frontier flew 103 of the 2,843 flights on RSW to ATL, about 4% of it. Its 56.0% on time is 30 points worse than the route as a whole, which runs 85.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 86.8% to Frontier at 56.0%.

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.

On-time performance by carrier on RSW to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	2,740	86.8%	83 min	1.50%	A
Frontier Airlines (this page)thin sample	103	56.0%	95 min	2.91%	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.

There are not enough flights in each departure window to split Frontier's RSW to ATL record by time of day without the percentages moving on noise. The headline rate of 56.0% is the reliable figure here.

Across the year

Frontier on RSW to ATL through the year

Jul–Sep 202525 flights—
Oct–Dec 202529 flights—
Jan–Mar 202639 flights52.8%
Apr–Jun 202610 flights—

Scale runs 45% to 60%. 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 56.0% on time across 103 flights.

Split by quarter, Frontier on RSW to ATL 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 56.0% 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 47% of the 4,167 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
47%
National Airspace System
45%
Carrier
6%
Extreme weather
2%

47% 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 4,167 reported delay minutes here, that single category outweighs weather by 21 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 4,167 reported delay minutes.

45% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,871 minutes out of 4,167, against a national NAS share of 21%.

Cancellations run at 2.91%, against 1.81% 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 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. 22.0% 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 59.0% on time across 103 flights, 3 points above 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 RSW to ATL

Put together: the delay figures matter less here than the 2.91% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 100 completed flights over 12 months sit behind that.

Where to go next

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