Flight number record

UA 1391

United Airlines · West Palm Beach to Newark

Route: PBI → EWR
Departs: 10:00
Flights: 275
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1391, check with United Airlines.

UA 1391 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 a little over an hour. That rests on 275 flights, with a median arrival 14 minutes early.

Set against the rest of the country, UA 1391's record is 12 points better than the US average of 77.6%. That gap is worth roughly 117 fewer late arrivals for every thousand flights.

On time

89.3%

Arrivals under 15 minutes late, of 271 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

1.45%

National rate is 1.81%

1 hour+ late

4.4%

National rate is 8.1%

These figures cover 275 flights between July 2025 and June 2026. The median arrival is 14 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.

Schedule

When UA 1391 flies

UA 1391 flies PBI to EWR without a single fixed slot. Its most common scheduled departure was 10:00, used on 63 of 275 flights, with 10:37 (43 flights) and 10:10 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:0063 flights22.9%
Departs 10:3743 flights15.6%
Departs 10:1033 flights12.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 1391 runs 5 points better at 89.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 1391 next to PBI to EWR

Every carrier on PBI to EWR combined arrived on time 74.5% of the time across 3,612 flights, so UA 1391 is 15 points ahead of it. United flew 2,773 flights on the same city pair under all its flight numbers, including this one, and those ran 76.3% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 10 points.

UA 1391 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1391thin sample	275	89.3%	72 min	1.45%	A
All United Airlines on PBI–EWR	2,773	76.3%	97 min	2.24%	B
All carriers on PBI–EWR	3,612	74.5%	91 min	2.85%	C
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1391 quarter by quarter

Quarter by quarter UA 1391 held fairly steady: 90.9% in Jul–Sep 2025, 88.8% in Oct–Dec 2025, 89.8% in Jan–Mar 2026 and 88.0% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202544 flights90.9%
Oct–Dec 202591 flights88.8%
Jan–Mar 202690 flights89.8%
Apr–Jun 202650 flights88.0%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1391 did best on Wednesday at 100.0% on time and worst on Thursday at 82.1%. Each day rests on about 39 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1391 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 2,093 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
44%
Late-arriving aircraft
28%
National Airspace System
28%

The largest share of delay minutes, 44%, 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 913 of the 2,093 delay minutes reported here. The split is drawn from 2,093 delay minutes reported on UA 1391.

Cancellations sit at 1.45% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.4% 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.

The 1,024 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on five other city pairs in the data, including EWR to JAX (80), DEN to LGA (27) and SMF to DEN (27), but none flew often enough under UA 1391 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PBI to EWR only.

One caution: this is a thin sample. 275 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 1391

For a booking, UA 1391 has one of the better records a US domestic flight can show: 89.3% on time and 1.45% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures