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Flight Reliability

UA 1621 · United Airlines

Los Angeles → Orlando (LAX–MCO)81% of its flights flew this route. The rest (MCO–ORD, MCO–SFO) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min
Average arrival delay
0.2%
Cancelled
10 min early
Median arrival delay

Based on 440 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

UA 1621 departing between 6–9 AM arrived on time 93% of the time, versus 80% between 9 PM–12 AM.

Mondays have been rough.

UA 1621 arrived on time 97% of the time on Wednesdays and just 76% on Mondays. That gap is worth planning around.

Better than the LAX–MCO route average.

UA 1621 arrived on time 86% of the time, versus 78% across the LAX–MCO route.

Better than the United Airlines network average.

UA 1621 arrived on time 86% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon76%(66 flights)
  • Tue88%(51 flights)
  • Wed97%(61 flights)
  • Thu87%(62 flights)
  • Fri80%(66 flights)
  • Sat86%(57 flights)
  • Sun91%(70 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM93%(54 flights)
  • 9 AM–12 PM86%(321 flights)
  • 6–9 PM86%(42 flights)
  • 9 PM–12 AM80%(15 flights)
On-time trend by month
90%
May

Jun 74% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%27
July 202580%30
August 202581%31
September 202590%29
October 2025100%30
November 202583%30
December 202593%44
January 202686%35
February 202684%31
March 202685%53
April 202688%64
May 202690%29
Departures on time
90%
Diverted
1.4%
Flights flown
433
Months covered
12

Same route, other flights

Keep nerding

Based on 440 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.