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DelayAtlas

Carrier route record

UALAXMCO

United Airlines · Los Angeles to Orlando

Flights
833
Period
July 2025 to June 2026
Share of route
24%
Carriers
5
A+GRADE

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.

United on LAX to MCO earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 833 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,383 at 76.3% on time.

Set against the rest of the country, United's LAX to MCO record is 12 points better than the US average of 77.6%. That gap is worth roughly 115 fewer late arrivals for every thousand flights.

Key figures

On time

89.1%

Arrivals under 15 minutes late, of 828 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

77.1%

Every carrier on LAX to MCO, 3,487 flights

These figures cover 833 flights between July 2025 and June 2026. The median arrival is 12 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 LAX to MCO

United flew 833 of the 3,487 flights on LAX to MCO, about 24% of it. Its 89.1% on time is 12 points better than the route as a whole, which runs 77.1%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from United at 89.1% to Frontier at 47.1%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The two carriers here are closely matched: 3 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on LAX to MCO
AirlineFlightsOn timeAvg delayCancelledGrade
United Airlines (this page)83389.1%61 min0.00%A+
Southwest Airlinesthin sample33077.3%32 min0.00%B+
Delta Air Lines1,38376.3%63 min1.16%B
American Airlines73573.3%76 min0.27%C+
Frontier Airlinesthin sample20647.1%103 min0.97%F+

No carrier stands out. Delta tops the table at 76.3%, 3 points clear of the bottom, which is inside the range this kind of sample moves year to year.

Flight by flight

United flight numbers on LAX to MCO

Departure window

When United runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 833 flights.

  • 5am–8am
  • 8am–11am356 flights88.6%
  • 11am–2pm61 flights91.8%
  • 2pm–5pm41 flights95.1%
  • 5pm–8pm
  • 8pm–5am375 flights88.5%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 2pm–5pm slot at 95.1% on time, ahead of 8pm–5am at 88.5%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8pm–5am window is the busiest, with 375 flights scheduled in it.

Across the year

United on LAX to MCO through the year

On-time rate by calendar month88J92F80M95A91M93J80J85A95S98O86N87D
Darker means more delays. Figures are on-time percentages.October best, March worst

July is the worst month at 80.0% on time, 18 points below October, the best at 98.3%. 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. January was the busiest month here, with 89 flights.

Across the week, Wednesday is the strongest day at 94.0% on time and Friday the weakest at 83.9%. 10 points is a smaller lever than departure hour, but it is free.

On-time rate by day of the week86.3Mon92.2Tue94.0Wed91.0Thu83.9Fri87.8Sat89.6Sun
Monday: 86.3 percent on time. Tuesday: 92.2 percent on time. Wednesday: 94.0 percent on time. Thursday: 91.0 percent on time. Friday: 83.9 percent on time. Saturday: 87.8 percent on time. Sunday: 89.6 percent on time

Delay causes

Why United runs late on this route

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 5,516 reported delay minutes.

  • Carrier
    40%
  • Late-arriving aircraft
    34%
  • National Airspace System
    26%

The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,218 of the 5,516 delay minutes reported here. The split is drawn from 5,516 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 3.0% land an hour or more behind schedule, against 8.1% 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 2,218 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg runs 87.1% on time across 834 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.

One caution: this is a thin sample. 833 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.

What to do with this

Booking United on LAX to MCO

Put together: treat all of this as provisional. 833 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 89.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 828 completed flights over 12 months sit behind that.

Related

Where to go next

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.