Route reliability record
MIA→TLH
Miami to Tallahassee
- Flights
- 1,198
- Period
- September 2025 to August 2026
- Distance
- 402 mi
- Carriers
- 3
This route lands a B+, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 1,198 MIA to TLH flights, with a median arrival 7 minutes early.
Best time to fly MIA to TLH: a 8am–11am departure, ideally on a Tuesday. Flights in that window arrived on time 94.4% of the time and Tuesday flights 91.0%, against 83.4% for the route overall.
Set against the rest of the country, this route's record is 6 points better than the US average of 77.3%. That gap is worth roughly 61 fewer late arrivals for every thousand flights.
Key figures
On time
83.4%
Arrivals under 15 minutes late, of 1,184 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
0.42%
National rate is 1.89%
Best carrier
Envoy
83.5% on time across 1,182 flights
These figures cover 1,198 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Which airline is most reliable on MIA to TLH
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 |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 8 | 87.5% | 597 min | 0.00% | A+ |
| Envoy Air | 1,182 | 83.5% | 56 min | 0.42% | B+ |
| American Airlinesthin sample | 8 | 62.5% | 86 min | 0.00% | D+ |
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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 16 points, against half a point between the best and worst carrier.
- 5am–8am199 flights91.8%
- 8am–11am166 flights94.4%
- 11am–2pm6 flights—
- 2pm–5pm148 flights78.9%
- 5pm–8pm330 flights79.1%
- 8pm–5am349 flights79.6%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 94.4% of the time, against 78.9% for the afternoon window. That is 16 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 349 flights scheduled in it.
Explore
Filter MIA to TLH 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 MIA to TLH, the best departure window is 8am–11am at 94.4% on time and the worst is 2pm–5pm at 78.9%, a wide gap of 15.5 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am91.8%
- 8–11am94.4%
- 11am–2pm—
- 2–5pm78.9%
- 5–8pm79.1%
- 8pm–5am79.6%
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 17 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.
July is the worst month at 73.2% on time, 17 points below September, the best at 90.2%. 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. August was the busiest month here, with 124 flights.
Across the week, Tuesday is the strongest day at 91.0% on time and Sunday the weakest at 73.5%, a spread of 18 points.
Delay causes
Why this route gets delayed
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 12,000 reported delay minutes.
- 34%Late-arriving aircraft
- 27%Carrier
- 27%National Airspace System
- 12%Extreme weather
Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 11,587 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 94.4% on time here.
Cancellations are rare at 0.42%, 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 actually costs
Badly late arrivals are rare here: only 4.1% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 402 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 81.6% on time across 1,198 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 1,198 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 TLH 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. September runs 90.2% on time and July 73.2%, a swing of 17 points. If the dates move at all, move them out of July before you think about anything else. 1,184 completed flights over 12 months sit behind that.
Common questions
MIA to TLH questions
How often is MIA to TLH delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 16.6% of the 1,198 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
How reliable is MIA to TLH compared with the rest of the country?
83.4% of flights arrive on time here against a national 77.3%, a difference of 6 points in its favour. That is worth a B+ on this site's grading scale.
What time of day has the fewest delays on MIA to TLH?
The 8am–11am departure window is the strongest at 94.4% on time. The 2pm–5pm window is the weakest at 78.9%, 16 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 July delays on MIA to TLH?
July is the weakest month at 73.2% on time, compared with 90.2% in September. Across the year that is 17 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
- TLH to MIA — the return legseparate record
- Miami International (MIA) delay statistics
- MIA to ATL, a related route74.2%
- ATL to TLH, a related route83.8%
- MIA to LGA, a related route67.4%
- Republic Airways on-time record87.5%
- Envoy Air on-time record83.5%
- American Airlines on-time record62.5%
- 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. MIA to TLH and TLH to MIA 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.