Carrier route record

F9MIA→CLE

Frontier Airlines · Miami to Cleveland

Flights: 264
Period: July 2025 to June 2026
Share of route: 31%
Carriers: 4

Historical statistics for July 2025 to June 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. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 264 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.6%, so Frontier on MIA to CLE runs 4 points behind the country as a whole. Across a thousand flights that is about 41 extra late arrivals.

On time

73.5%

Arrivals under 15 minutes late, of 260 completed flights

Avg delay

83 min

Across delayed arrivals only, not all flights

Cancelled

1.14%

National rate is 1.81%

Whole route

72.2%

Every carrier on MIA to CLE, 840 flights

These figures cover 264 flights between July 2025 and June 2026. Beyond the headline rate, 11.9% 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 MIA to CLE

Frontier flew 264 of the 840 flights on MIA to CLE, about 31% of it. Its 73.5% on time is about level with the route as a whole at 72.2%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Envoy at 77.8% to Republic at 55.6%. 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	111	77.8%	43 min	1.80%	B
Frontier Airlines (this page)thin sample	264	73.5%	83 min	1.14%	C
American Airlines	456	70.5%	65 min	1.10%	C
Republic Airwaysthin sample	9	55.6%	95 min	0.00%	D+

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 24 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am36 flights86.1%
8am–11am16 flights—
11am–2pm35 flights73.5%
2pm–5pm38 flights72.2%
5pm–8pm75 flights73.3%
8pm–5am64 flights61.9%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 61.9% 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 5pm–8pm window is the busiest, with 75 flights scheduled in it.

Across the year

Frontier on MIA to CLE through the year

Jul–Sep 202559 flights68.4%
Oct–Dec 202564 flights84.4%
Jan–Mar 202664 flights69.4%
Apr–Jun 202677 flights71.4%

Scale runs 60% 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 73.5% on time across 264 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 2025 at 68.4%, a swing of 16 points on roughly 66 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 82.0% on time and Sunday the weakest at 60.7%. 21 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Frontier runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 68% of the 5,754 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
68%
Carrier
16%
National Airspace System
12%
Extreme weather
3%

68% 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 5,754 reported delay minutes here, that single category outweighs weather by 19 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 5,754 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 sit at 1.14% against a national 1.81%, which is ordinary. Diversions add another 0.38%.

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. 11.9% 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 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. 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 runs 73.2% on time across 266 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. 264 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. 264 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 73.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 260 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