Route reliability record
MCO→PHL
Orlando to Philadelphia
- Flights
- 5,342
- Period
- June 2025 to May 2026
- Distance
- 862 mi
- Carriers
- 4
This route 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 77.4%. The late ones land an hour and a half behind schedule. That rests on 5,342 flights, of which American Airlines flew 2,566 at 75.0% on time.
American Airlines is the most reliable of the four carriers covered here at 75.0% on time across 2,566 flights.
Key figures
On time
72.1%
Arrivals under 15 minutes late, of 5,209 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
2.40%
National rate is 1.80%
Best carrier
American
75.0% on time across 2,566 flights
These figures cover 5,342 flights between June 2025 and May 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
Which airline is most reliable on MCO to PHL
The choice of carrier is not cosmetic here. American Airlines arrives on time 75.0% of the time; Spirit Airlines manages 66.5%. Sample sizes sit next to every figure, because a two-point gap across 641 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines | 2,566 | 75.0% | 89 min | 2.38% | B |
| Frontier Airlines | 1,491 | 70.8% | 89 min | 2.01% | C |
| Southwest Airlines | 644 | 69.1% | 56 min | 0.78% | C+ |
| Spirit Airlines | 641 | 66.5% | 73 min | 4.99% | C− |
Spirit Airlines cancels 5.0% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
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 35 points, against 9 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am737 flights93.4%
- 8am–11am1,111 flights84.2%
- 11am–2pm800 flights71.0%
- 2pm–5pm945 flights63.6%
- 5pm–8pm1,116 flights61.1%
- 8pm–5am633 flights58.3%
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 58.3% on time, against 93.4% 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.
Across the year
When delays peak on this route
This route's year swings by 22 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 60.6% on time, 22 points below September, the best at 82.2%. 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.
Across the week, Tuesday is the strongest day at 79.4% on time and Sunday the weakest at 65.6%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 119,000 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.
- 51%Late-arriving aircraft
- 23%Carrier
- 20%National Airspace System
- 6%Extreme weather
- 0%Security
51% 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 119,000 reported delay minutes here, that single category outweighs weather by 9 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 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 93.4% on time here.
Cancellations sit at 2.40% against a national 1.80%, which is ordinary. Diversions add another 0.09%.
Connections and stage length
What a delay here actually 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 8.2% 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 862 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 71.5% on time across 5,347 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.
The sample behind these figures is 5,342 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.
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 82.2% on time and July 60.6%, a swing of 22 points. If the dates move at all, move them out of July before you think about anything else.
Common questions
MCO to PHL questions
How often is MCO to PHL delayed?
Roughly one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 27.9% of the 5,342 flights in this analysis, against 22.6% nationally. Delayed flights are late by an hour and a half on average.
Which airline is most reliable on MCO to PHL?
American Airlines leads at 75.0% on time across 2,566 flights. Spirit Airlines is at the other end on 66.5%, a gap of 9 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on MCO to PHL?
The 5am–8am departure window is the strongest at 93.4% on time. The 8pm–5am window is the weakest at 58.3%, 35 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 MCO to PHL?
July is the weakest month at 60.6% on time, compared with 82.2% in September. Across the year that is 22 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
- PHL to MCO — the return legseparate record
- Orlando International (MCO) delay statistics
- Philadelphia International (PHL) delay statistics
- American Airlines on-time record75.0%
- Frontier Airlines on-time record70.8%
- Southwest Airlines on-time record69.1%
- 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. MCO to PHL and PHL to MCO are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.