Route reliability record
CLT→MIA
Charlotte to Miami
- Flights
- 3,731
- Period
- September 2025 to August 2026
- Distance
- 650 mi
- Carriers
- 3
This route lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 3,731 CLT to MIA flights, with a median arrival 7 minutes early.
Best time to fly CLT to MIA: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 89.5% of the time and Tuesday flights 85.6%, against 77.0% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.0%
Arrivals under 15 minutes late, of 3,649 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
1.80%
National rate is 1.89%
Best carrier
American
78.1% on time across 3,269 flights
These figures cover 3,731 flights between September 2025 and August 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on CLT to MIA
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 |
|---|---|---|---|---|---|
| American Airlines | 3,269 | 78.1% | 78 min | 1.38% | B |
| Spirit Airlinesthin sample | 222 | 73.1% | 63 min | 5.86% | C− |
| Frontier Airlinesthin sample | 240 | 64.9% | 140 min | 3.75% | D− |
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Best ways to make this trip
The most reliable ways to fly Charlotte to Miami
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 2 of the top 3 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. CLT → MIACharlotte to Miami | American Airlines | 77.0% | 78.1% | 1.38% | 5am–8am, Tue | — |
| 2. CLT → FLLCharlotte to Fort Lauderdale | American Airlines | 75.7% | 77.1% | 1.79% | 8am–11am, Wed | — |
| 3. CLT → FLLCharlotte to Fort Lauderdale | Spirit Airlines | 70.5% | 74.7% | 5.60% | 5am–8am, Wed | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
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–8am920 flights89.5%
- 8am–11am555 flights85.8%
- 11am–2pm650 flights79.5%
- 2pm–5pm488 flights66.9%
- 5pm–8pm496 flights63.6%
- 8pm–5am622 flights66.6%
Scale runs 55% to 95%.
The 5pm–8pm window is where this operation falls apart: 63.6% on time, against 89.5% 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 5am–8am window is the busiest, with 920 flights scheduled in it.
Explore
Filter CLT to MIA by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On CLT to MIA, the best departure window is 5am–8am at 89.5% on time and the worst is 5pm–8pm at 63.6%, a wide gap of 25.9 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am89.5%
- 8–11am85.8%
- 11am–2pm79.5%
- 2–5pm66.9%
- 5–8pm63.6%
- 8pm–5am66.6%
best all US flightsScale 55% to 95%.
Across the year
When delays peak on this route
This route's year swings by 14 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
August is the worst month at 69.5% on time, 14 points below March, the best at 83.8%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. December was the busiest month here, with 355 flights.
Across the week, Tuesday is the strongest day at 85.6% on time and Sunday the weakest at 68.0%, a spread of 18 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 47% of the 69,000 delay minutes carriers reported here, and the remaining four split what is left.
- 47%Late-arriving aircraft
- 32%Carrier
- 15%National Airspace System
- 7%Extreme weather
- 0%Security
47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 69,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 69,263 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 89.5% on time here.
Cancellations sit at 1.80% against a national 1.89%, which is ordinary. Diversions add another 0.40%.
Connections and stage length
What a delay here actually costs
8.3% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 650 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 78.5% on time across 3,733 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 3,731 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in MIA after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. March runs 83.8% on time and August 69.5%, a swing of 14 points. If the dates move at all, move them out of August before you think about anything else. 3,649 completed flights over 12 months sit behind that.
Common questions
CLT to MIA questions
How often is CLT to MIA delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 23.0% of the 3,731 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is CLT to MIA compared with the rest of the country?
77.0% of flights arrive on time here against a national 77.3%, a difference of half a point against it. That is worth a B on this site's grading scale.
What time of day has the fewest delays on CLT to MIA?
The 5am–8am departure window is the strongest at 89.5% on time. The 5pm–8pm window is the weakest at 63.6%, 26 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are August delays on CLT to MIA?
August is the weakest month at 69.5% on time, compared with 83.8% in March. Across the year that is 14 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- MIA to CLT — the return legseparate record
- Charlotte Douglas International (CLT) delay statistics
- Miami International (MIA) delay statistics
- American Airlines on CLT to MIA78.1%
- Spirit Airlines on CLT to MIA73.1%
- Frontier Airlines on CLT to MIA64.9%
- CLT to MCO, a related route71.6%
- ATL to MIA, a related route71.2%
- CLT to ORD, a related route72.4%
- American Airlines on-time record78.1%
- Spirit Airlines on-time record73.1%
- Frontier Airlines on-time record64.9%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. CLT to MIA and MIA to CLT are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.