Carrier route record

F9MIA→CLE

Frontier Airlines · Miami to Cleveland

Flights: 266
Period: September 2025 to August 2026
Share of route: 30%
Carriers: 4

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

Frontier on MIA to CLE sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 266 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.3%, so Frontier on MIA to CLE runs 5 points behind the country as a whole. Across a thousand flights that is about 52 extra late arrivals.

On time

72.1%

Arrivals under 15 minutes late, of 262 completed flights

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

0.75%

National rate is 1.89%

Whole route

71.8%

Every carrier on MIA to CLE, 891 flights

These figures cover 266 flights between September 2025 and August 2026. Beyond the headline rate, 13.0% 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 MIA to CLE

Frontier flew 266 of the 891 flights on MIA to CLE, about 30% of it. Its 72.1% on time is about level with the route as a whole at 71.8%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Envoy at 76.5% to American at 69.9%. Two 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 MIA to CLE
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	165	76.5%	43 min	1.21%	B
Republic Airwaysthin sample	4	75.0%	75 min	0.00%	B+
Frontier Airlines (this page)thin sample	266	72.1%	78 min	0.75%	C+
American Airlines	456	69.9%	61 min	1.10%	C

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 26 points, against half a point between the best and worst carrier.

5am–8am36 flights86.1%
8am–11am16 flights—
11am–2pm15 flights—
2pm–5pm24 flights—
5pm–8pm68 flights73.5%
8pm–5am107 flights59.6%

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

The 8pm–5am window is where this operation falls apart: 59.6% on time, against 86.1% for the 5am–8am 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 8pm–5am window is the busiest, with 107 flights scheduled in it.

Across the year

Frontier on MIA to CLE through the year

Jul–Sep 202516 flights—
Oct–Dec 202564 flights84.4%
Jan–Mar 202664 flights69.4%
Apr–Jun 202677 flights71.4%
Jul–Sep 202645 flights58.1%

Scale runs 50% to 90%. 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 72.1% on time across 266 flights.

Frontier on MIA to CLE did not run the same all year. Its best quarter was Oct–Dec 2025 at 84.4% on time and its weakest Jul–Sep 2026 at 58.1%, a swing of 26 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.

Across the week, Thursday is the strongest day at 80.0% on time and Sunday the weakest at 61.4%, a spread of 19 points.

Arrival by arrival

How late Frontier on MIA to CLE runs when it is late

Frontier on MIA to CLE often beats the schedule: 89 of 262 completed flights, 34%, arrived 15 minutes or more early. The 73 late arrivals split 16 under half an hour, 23 between 30 and 60 minutes, and 34 an hour or more.

15+ min early89 flights34.0%
Within 15 min100 flights38.2%
15–29 min late16 flights6.1%
30–59 min late23 flights8.8%
1–2 hours late21 flights8.0%
2+ hours late13 flights5.0%

Scale runs 0% to 100%.

Share of 262 completed flights by arrival against schedule.

23 of 85 late departures made up the time and arrived on time, 27% of them. 11 flights left on time and still arrived late.

The worst days

Worst days for Frontier on MIA to CLE

The latest arrival of the period was on 15 March 2026, 5 hours 34 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 MIA to CLE in the period
Date	Arrived late by	Largest filed cause
15 March 2026	5 hours 34 minutes	Carrier
10 October 2025	3 hours 59 minutes	Late-arriving aircraft
23 December 2025	3 hours 54 minutes	Late-arriving aircraft
9 April 2026	3 hours 51 minutes	Late-arriving aircraft
14 June 2026	3 hours 26 minutes	Late-arriving aircraft

Delay causes

Why Frontier runs late on this route

Late-arriving aircraft accounts for 65% of the 5,719 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
65%
Carrier
19%
National Airspace System
12%
Extreme weather
4%

65% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,719 reported delay minutes here, that single category outweighs weather by 17 to one. The split is drawn from 5,719 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 86.1% on time here.

Cancellations are rare at 0.75%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

13.0% 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 1,080 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 runs 72.5% on time across 267 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 266 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 MIA to CLE

Put together: treat all of this as provisional. 266 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 72.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 262 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