Flight number record
UA 1864
United Airlines · Miami to Newark
- Route
- MIA → EWR
- Departs
- 07:07
- Flights
- 359
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1864, check with United Airlines.
UA 1864 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 359 flights, with a median arrival 10 minutes early.
Set against the rest of the country, UA 1864's record is 15 points better than the US average of 77.3%. That gap is worth roughly 154 fewer late arrivals for every thousand flights.
Key figures
On time
92.7%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.84%
National rate is 1.89%
1 hour+ late
2.0%
National rate is 8.3%
These figures cover 359 flights between September 2025 and August 2026. The median arrival is 10 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.
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Schedule
When UA 1864 flies
UA 1864 flies MIA to EWR without a single fixed slot. Its most common scheduled departure was 07:07, used on 76 of 359 flights, with 07:00 (61 flights) and 06:00 (59 flights) next.
- Departs 07:0776 flights21.2%
- Departs 07:0061 flights17.0%
- Departs 06:0059 flights16.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 07:07 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 1864 runs 3 points better at 92.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1864 next to MIA to EWR
Every carrier on MIA to EWR combined arrived on time 72.2% of the time across 3,913 flights, so UA 1864 is 21 points ahead of it. United flew 2,240 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1864thin sample | 359 | 92.7% | 77 min | 0.84% | A+ |
| All United Airlines on MIA–EWR | 2,240 | 75.5% | 88 min | 2.37% | B |
| All carriers on MIA–EWR | 3,913 | 72.2% | 81 min | 2.94% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1864 quarter by quarter
Quarter by quarter UA 1864 held fairly steady: 93.4% in Oct–Dec 2025, 90.8% in Jan–Mar 2026, 95.6% in Apr–Jun 2026 and 90.0% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202527 flights—
- Oct–Dec 202591 flights93.4%
- Jan–Mar 202689 flights90.8%
- Apr–Jun 202691 flights95.6%
- Jul–Sep 202661 flights90.0%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1864 did best on Sunday at 98.0% on time and worst on Monday at 80.8%. Each day rests on about 51 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1864 runs when it is late
UA 1864 often beats the schedule: 117 of 356 completed flights, 33%, arrived 15 minutes or more early. The 26 late arrivals split 12 under half an hour, 7 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early117 flights32.9%
- Within 15 min213 flights59.8%
- 15–29 min late12 flights3.4%
- 30–59 min late7 flights2.0%
- 1–2 hours late2 flights0.6%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
A late pushback is often recovered here: of 22 departures that left 15 minutes late or more, 8 still arrived on time. 12 flights left on time and still arrived late.
The worst days
Worst days for UA 1864
The latest arrival of the period was on 1 November 2025, 6 hours 24 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 November 2025 | 6 hours 24 minutes | Late-arriving aircraft |
| 21 August 2026 | 4 hours 56 minutes | Carrier |
| 15 December 2025 | 4 hours 28 minutes | Late-arriving aircraft |
| 1 December 2025 | 2 hours 36 minutes | Carrier |
| 24 February 2026 | 2 hours 23 minutes | Late-arriving aircraft |
Delay causes
Why UA 1864 runs late
Carrier accounts for 43% of the 2,012 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 34%Late-arriving aircraft
- 17%National Airspace System
- 6%Extreme weather
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,012 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 2,012 delay minutes reported on UA 1864.
Cancellations are rare at 0.84%, below the national 1.89% 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 routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.0% land an hour or more behind schedule, against 8.3% 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.
The 1,085 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.
The same number turns up on one other city pair in the data, including EWR to LAS (155), but none flew often enough under UA 1864 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MIA to EWR only.
One caution: this is a thin sample. 359 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 UA 1864
For a booking, UA 1864 has one of the better records a US domestic flight can show: 92.7% on time and 0.84% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- MIA to EWR, every carrier and departure
- EWR to MIA, the return direction
- Miami International (MIA) delay statistics
- Newark Liberty International (EWR) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.