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DelayAtlas

Carrier route record

UAEWR→PBI

United Airlines · Newark to West Palm Beach

Flights
2,616
Period
September 2025 to August 2026
Share of route
77%
Carriers
3
BGRADE

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.

United on EWR to PBI lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 2,616 flights, with a median arrival 10 minutes early.

The US average over the same twelve months is 77.3%, so there is little to separate United on EWR to PBI from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

Key figures

On time

79.4%

Arrivals under 15 minutes late, of 2,553 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

2.10%

National rate is 1.89%

Whole route

77.5%

Every carrier on EWR to PBI, 3,395 flights

These figures cover 2,616 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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Carrier by carrier

United against every carrier on EWR to PBI

United flew 2,616 of the 3,395 flights on EWR to PBI, most of the route. Its 79.4% on time is 2 points better than the route as a whole, which runs 77.5%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from United at 79.4% to Spirit at 51.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on EWR to PBI
AirlineFlightsOn timeAvg delayCancelledGrade
United Airlines (this page)2,61679.4%67 min2.10%B
JetBlue Airways65973.8%62 min3.49%C−
Spirit Airlinesthin sample12051.5%72 min14.17%F−

Flight by flight

United flight numbers on EWR to PBI

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Departure window

When United runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against half a point between the best and worst carrier.

  • 5am–8am398 flights91.2%
  • 8am–11am623 flights82.4%
  • 11am–2pm485 flights75.6%
  • 2pm–5pm559 flights76.5%
  • 5pm–8pm357 flights75.8%
  • 8pm–5am194 flights70.3%

Scale runs 60% to 95%.

Book the early departure. Flights leaving between 5am–8am arrive on time 91.2% of the time, against 70.3% for the overnight window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 623 flights scheduled in it.

Across the year

United on EWR to PBI through the year

On-time rate by calendar month80J85F79M81A87M87J73J—A83S72O75N74D
Darker means more delays. Figures are on-time percentages.May best, October worst

May is the best month on the calendar at 87.1% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. March was the busiest month here, with 307 flights.

Across the week, Wednesday is the strongest day at 86.9% on time and Sunday the weakest at 72.9%, a spread of 14 points.

On-time rate by day of the week79.0Mon86.3Tue86.9Wed73.3Thu82.3Fri75.2Sat72.9Sun
Monday: 79.0 percent on time. Tuesday: 86.3 percent on time. Wednesday: 86.9 percent on time. Thursday: 73.3 percent on time. Friday: 82.3 percent on time. Saturday: 75.2 percent on time. Sunday: 72.9 percent on time

Arrival by arrival

How late United on EWR to PBI runs when it is late

United on EWR to PBI often beats the schedule: 1,062 of 2,553 completed flights, 42%, arrived 15 minutes or more early. The 525 late arrivals split 187 under half an hour, 158 between 30 and 60 minutes, and 180 an hour or more.

  • 15+ min early1,062 flights41.6%
  • Within 15 min966 flights37.8%
  • 15–29 min late187 flights7.3%
  • 30–59 min late158 flights6.2%
  • 1–2 hours late103 flights4.0%
  • 2+ hours late77 flights3.0%

Scale runs 0% to 100%.

Share of 2,553 completed flights by arrival against schedule.

121 of 483 late departures made up the time and arrived on time, 25% of them. In the other direction, 163 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PBI.

The worst days

Worst days for United on EWR to PBI

The latest arrival of the period was on 8 November 2025, 9 hours 47 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across November, July and October, with no single month standing out.

The latest arrivals of United on EWR to PBI in the period
DateArrived late byLargest filed cause
8 November 20259 hours 47 minutesNational Airspace System
8 July 20268 hours 58 minutesCarrier
30 October 20257 hours 53 minutesExtreme weather
7 November 20256 hours 9 minutesLate-arriving aircraft
30 October 20255 hours 51 minutesExtreme weather

Delay causes

Why United runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 35,000 reported delay minutes.

  • National Airspace System
    37%
  • Late-arriving aircraft
    34%
  • Carrier
    23%
  • Extreme weather
    5%

34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 35,000 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 34,933 reported delay minutes.

37% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 13,000 minutes out of 35,000, against a national NAS share of 21%.

Cancellations sit at 2.10% against a national 1.89%, which is ordinary. Diversions add another 0.31%.

Connections and stage length

What a delay here costs

7.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

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.

The return leg runs 77.9% on time across 2,619 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

The sample behind these figures is 2,616 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking United on EWR to PBI

Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 87.1% on time and October 72.2%, a swing of 15 points. If the dates move at all, move them out of October before you think about anything else. 2,553 completed flights over 12 months sit behind that.

Related

Where to go next

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.