Carrier route record
UAORD→MCO
United Airlines · Chicago to Orlando
- Flights
- 2,459
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on ORD to MCO lands a B+, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 2,459 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 801 at 73.9% on time.
The US average over the same twelve months is 77.6%, so there is little to separate United on ORD to MCO from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.7%
Arrivals under 15 minutes late, of 2,432 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
0.61%
National rate is 1.81%
Whole route
72.2%
Every carrier on ORD to MCO, 6,347 flights
These figures cover 2,459 flights between July 2025 and June 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.
Carrier by carrier
United against every carrier on ORD to MCO
United flew 2,459 of the 6,347 flights on ORD to MCO, about 39% of it. Its 78.7% on time is 7 points better than the route as a whole, which runs 72.2%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from United at 78.7% to American at 64.5%.
The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 73.9% of the time; American Airlines manages 64.5%. Sample sizes sit next to every figure, because a two-point gap across 2,140 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines (this page) | 2,459 | 78.7% | 70 min | 0.61% | B+ |
| Southwest Airlines | 801 | 73.9% | 66 min | 1.12% | C |
| Spirit Airlines | 582 | 71.6% | 80 min | 3.09% | C− |
| Frontier Airlines | 365 | 69.5% | 97 min | 2.19% | C |
| American Airlines | 2,140 | 64.5% | 79 min | 2.29% | D |
Spirit Airlines cancels 3.1% 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.
Flight by flight
United flight numbers on ORD to MCO
Departure window
When United 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 9 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am527 flights90.9%
- 8am–11am527 flights78.7%
- 11am–2pm401 flights77.9%
- 2pm–5pm562 flights76.7%
- 5pm–8pm361 flights66.9%
- 8pm–5am81 flights69.6%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 90.9% of the time, against 66.9% for the evening window. That is 24 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 562 flights scheduled in it.
Across the year
United on ORD to MCO through the year
December is the weak month at 73.2% on time, against 88.8% in February. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. March was the busiest month here, with 268 flights.
Across the week, Thursday is the strongest day at 84.0% on time and Sunday the weakest at 74.7%. 9 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 44% of the 36,000 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.
- 44%Late-arriving aircraft
- 27%National Airspace System
- 24%Carrier
- 5%Extreme weather
44% 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 36,000 reported delay minutes here, that single category outweighs weather by 8 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 36,268 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 90.9% on time here.
Cancellations are rare at 0.61%, below the national 1.81% 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 costs
7.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 1,005 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 is a different operation and performs like one: it runs 75.6% on time across 2,459 flights, 3 points below 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 3 points of difference.
The sample behind these figures is 2,459 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 United on ORD to MCO
Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 88.8% on time and December 73.2%, a swing of 16 points. If the dates move at all, move them out of December before you think about anything else. 2,432 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to MCO, every carrier
- United on MCO to ORD, the return leg
- Southwest Airlines on ORD to MCO73.9%
- Spirit Airlines on ORD to MCO71.6%
- Frontier Airlines on ORD to MCO69.5%
- American Airlines on ORD to MCO64.5%
- United Airlines network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Orlando International (MCO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.