Route reliability record
MIA→PIT
Miami to Pittsburgh
- Flights
- 735
- Period
- September 2025 to August 2026
- Distance
- 1,013 mi
- Carriers
- 4
This route 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 77.3%. The late ones land about an hour behind schedule. That rests on 735 MIA to PIT flights, with a median arrival 6 minutes early.
Best time to fly MIA to PIT: a 8am–11am departure, ideally on a Wednesday. Flights in that window arrived on time 88.6% of the time and Wednesday flights 87.1%, against 73.0% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 4 points behind the country as a whole. Across a thousand flights that is about 43 extra late arrivals.
Key figures
On time
73.0%
Arrivals under 15 minutes late, of 723 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
1.63%
National rate is 1.89%
Best carrier
American
73.0% on time across 638 flights
These figures cover 735 flights between September 2025 and August 2026. Beyond the headline rate, 9.5% 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 MIA to PIT
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 |
|---|---|---|---|---|---|
| Envoy Airthin sample | 38 | 86.5% | 77 min | 2.63% | A |
| American Airlines | 638 | 73.0% | 60 min | 1.41% | C |
| Southwest Airlinesthin sample | 51 | 65.3% | 48 min | 3.92% | C− |
| Republic Airwaysthin sample | 8 | 62.5% | 42 min | 0.00% | 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.
Best ways to make this trip
The most reliable ways to fly Miami to Pittsburgh
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. MIA → PITMiami to Pittsburgh | American Airlines | 72.0% | 73.0% | 1.41% | 8am–11am, Wed (route) | — |
| 2. FLL → PITFort Lauderdale to Pittsburgh | Spirit Airlines | 66.0% | 69.4% | 4.88% | 5am–8am, Tue | — |
| 3. FLL → PITFort Lauderdale to Pittsburgh | Southwest Airlines | 64.2% | 64.9% | 1.02% | 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 20 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am37 flights88.6%
- 11am–2pm38 flights76.3%
- 2pm–5pm258 flights71.3%
- 5pm–8pm35 flights68.6%
- 8pm–5am367 flights72.9%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 88.6% of the time, against 68.6% for the evening window. That is 20 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 367 flights scheduled in it.
Explore
Filter MIA to PIT 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 PIT, the best departure window is 8am–11am at 88.6% on time and the worst is 5pm–8pm at 68.6%, a wide gap of 20.0 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am88.6%
- 11am–2pm76.3%
- 2–5pm71.3%
- 5–8pm68.6%
- 8pm–5am72.9%
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 28 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 60.0% on time, 28 points below January, the best at 87.7%. 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. March was the busiest month here, with 96 flights.
Across the week, Wednesday is the strongest day at 87.1% on time and Sunday the weakest at 57.7%, a spread of 29 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 42% of the 12,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Late-arriving aircraft
- 35%Carrier
- 13%National Airspace System
- 9%Extreme weather
- 0%Security
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 12,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 11,597 reported delay minutes.
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,090 of the 12,000 delay minutes reported here.
Cancellations sit at 1.63% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here actually costs
9.5% 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 1,013 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 78.9% on time across 736 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 735 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.
Work out the risk of missing a connection in PIT after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 735 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 73.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 723 completed flights over 12 months sit behind that.
Common questions
MIA to PIT questions
How often is MIA to PIT delayed?
About 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 27.0% of the 735 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
How reliable is MIA to PIT compared with the rest of the country?
73.0% of flights arrive on time here against a national 77.3%, a difference of 4 points against it. That is worth a C on this site's grading scale.
What time of day has the fewest delays on MIA to PIT?
The 8am–11am departure window is the strongest at 88.6% on time. The 5pm–8pm window is the weakest at 68.6%, 20 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 PIT?
July is the weakest month at 60.0% on time, compared with 87.7% in January. Across the year that is 28 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
- PIT to MIA — the return legseparate record
- Miami International (MIA) delay statistics
- Pittsburgh International (PIT) delay statistics
- MIA to ATL, a related route74.2%
- ORD to PIT, a related route73.6%
- MIA to LGA, a related route67.4%
- Envoy Air on-time record86.5%
- American Airlines on-time record73.0%
- Southwest Airlines on-time record65.3%
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
Direction matters. MIA to PIT and PIT 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.