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Flight Reliability

UA 1864 · United Airlines

Miami → Newark (MIA–EWR)82% of its flights flew this route. The rest (EWR–LAS, EWR–BOS) are included in these numbers.

97
Nerd Approved
WanderNerd Reliability Score
92%
Arrive within 15 minutes
5 min early
Average arrival delay
0.7%
Cancelled
11 min early
Median arrival delay

Based on 410 historical flights. Data through May 2026.

What the data says

Saturday is the weak spot.

UA 1864 arrived on time 97% of the time on Fridays. On Saturdays: 83%.

Well ahead of the MIA–EWR route.

UA 1864 arrived on time 92% of the time, versus 72% across the MIA–EWR route.

Better than the United Airlines network average.

UA 1864 arrived on time 92% of the time, versus 79% across the United Airlines network.

Ticking up lately.

UA 1864 arrived on time 94% of the time over the last three months in the data, compared with 90% in the three months before that.

The breakdown

On-time by weekday
  • Mon86%(59 flights)
  • Tue97%(58 flights)
  • Wed97%(57 flights)
  • Thu89%(56 flights)
  • Fri97%(60 flights)
  • Sat83%(58 flights)
  • Sun97%(59 flights)
On-time by departure window
  • 6–9 AM93%(332 flights)
  • 9 AM–12 PM91%(63 flights)
  • 12–3 PM91%(11 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
92%
May

Jun 88% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%16
July 202590%30
August 202587%31
September 202593%27
October 202597%30
November 202597%30
December 202590%31
January 202690%30
February 202689%26
March 202694%34
April 202695%60
May 202692%62
Departures on time
92%
Diverted
0%
Flights flown
407
Months covered
12

Same route, other flights

Keep nerding

Based on 410 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.