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Flight Reliability

UA 379 · United Airlines

Washington → Orlando (IAD–MCO)91% of its flights flew this route. The rest (CVG–IAD, ORD–PDX) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
3 min early
Average arrival delay
1.1%
Cancelled
10 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

What the data says

Monday is the weak spot.

UA 379 arrived on time 93% of the time on Wednesdays. On Mondays: 83%.

Better than the IAD–MCO route average.

UA 379 arrived on time 89% of the time, versus 81% across the IAD–MCO route.

Better than the United Airlines network average.

UA 379 arrived on time 89% of the time, versus 79% across the United Airlines network.

Trending in the right direction.

UA 379 arrived on time 92% of the time over the last three months in the data, compared with 83% in the three months before that.

The breakdown

On-time by weekday
  • Mon83%(53 flights)
  • Tue87%(39 flights)
  • Wed93%(44 flights)
  • Thu87%(55 flights)
  • Fri91%(56 flights)
  • Sat91%(55 flights)
  • Sun89%(53 flights)
On-time by departure window
  • 6–9 AM90%(332 flights)
  • 9 AM–12 PM91%(11 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
92%
May

Jun 90% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202583%30
August 202587%30
September 202597%29
October 202590%31
November 202590%29
December 202581%31
January 202682%22
February 202688%24
March 202693%43
April 202690%30
May 202692%26
Departures on time
93%
Diverted
0.6%
Flights flown
355
Months covered
12

Same route, other flights

Keep nerding

Based on 361 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.