Carrier route record

F9FLL→CVG

Frontier Airlines · Fort Lauderdale to Cincinnati

Flights: 193
Period: September 2025 to August 2026
Share of route: 20%
Carriers: 3

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on FLL to CVG draws a D. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 193 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.3%, so Frontier on FLL to CVG runs 13 points behind the country as a whole. Across a thousand flights that is about 127 extra late arrivals.

On time

64.6%

Arrivals under 15 minutes late, of 189 completed flights

Avg delay

96 min

Across delayed arrivals only, not all flights

Cancelled

2.07%

National rate is 1.89%

Whole route

70.3%

Every carrier on FLL to CVG, 975 flights

These figures cover 193 flights between September 2025 and August 2026. Beyond the headline rate, 19.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

Frontier against every carrier on FLL to CVG

Frontier flew 193 of the 975 flights on FLL to CVG, about 20% of it. Its 64.6% on time is 6 points worse than the route as a whole, which runs 70.3%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 71.8% to Frontier at 64.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

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 FLL to CVG
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	525	71.8%	84 min	0.95%	C+
Allegiant Airthin sample	257	71.5%	100 min	0.39%	C+
Frontier Airlines (this page)thin sample	193	64.6%	96 min	2.07%	D

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 28 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am30 flights76.7%
11am–2pm32 flights84.4%
2pm–5pm14 flights—
5pm–8pm104 flights56.9%
8pm–5am13 flights—

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 56.9% on time, against 84.4% for the 11am–2pm slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 104 flights scheduled in it.

Across the year

Frontier on FLL to CVG through the year

Jul–Sep 202517 flights—
Oct–Dec 202557 flights67.3%
Jan–Mar 202652 flights56.9%
Apr–Jun 202642 flights78.6%
Jul–Sep 202625 flights—

Scale runs 50% to 85%. 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 64.6% on time across 193 flights.

Frontier on FLL to CVG did not run the same all year. Its best quarter was Apr–Jun 2026 at 78.6% on time and its weakest Jan–Mar 2026 at 56.9%, a swing of 22 points on roughly 64 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.

Across the week, Friday is the strongest day at 62.5% on time and Monday the weakest at 56.0%, a spread of 7 points.

Arrival by arrival

How late Frontier on FLL to CVG runs when it is late

Frontier on FLL to CVG often beats the schedule: 61 of 189 completed flights, 32%, arrived 15 minutes or more early. When Frontier on FLL to CVG is late it tends to be very late: 36 of its 67 late arrivals were an hour or more behind, and 15 were two hours or more.

15+ min early61 flights32.3%
Within 15 min61 flights32.3%
15–29 min late15 flights7.9%
30–59 min late16 flights8.5%
1–2 hours late21 flights11.1%
2+ hours late15 flights7.9%

Scale runs 0% to 100%.

Share of 189 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 62 departures that left 15 minutes late or more, only 7 made it up before arrival. In the other direction, 12 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at CVG.

The worst days

Worst days for Frontier on FLL to CVG

The latest arrival of the period was on 13 February 2026, 7 hours 44 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.

The latest arrivals of Frontier on FLL to CVG in the period
Date	Arrived late by	Largest filed cause
13 February 2026	7 hours 44 minutes	Carrier
14 December 2025	7 hours 16 minutes	Late-arriving aircraft
15 February 2026	5 hours 44 minutes	Late-arriving aircraft
15 December 2025	5 hours 8 minutes	Late-arriving aircraft
15 March 2026	5 hours 3 minutes	Late-arriving aircraft

Delay causes

Why Frontier runs late on this route

Late-arriving aircraft accounts for 59% of the 6,398 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
59%
Carrier
26%
National Airspace System
13%
Extreme weather
2%

59% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,398 reported delay minutes here, that single category outweighs weather by 26 to one. The split is drawn from 6,398 reported delay minutes.

Cancellations sit at 2.07% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

19.0% 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 932 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.

The return leg is a different operation and performs like one: it runs 74.5% on time across 193 flights, 10 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 10 points of difference.

One caution: this is a thin sample. 193 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 FLL to CVG

Put together: treat all of this as provisional. 193 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 64.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 189 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures