Skip to content
WanderNerd
Check a flight

Route Reliability

West Palm Beach → ISP

PBI–ISP · 1,052 miles · Palm Beach International Airport to ISP Airport

72
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
13 min
Average arrival delay
1.6%
Cancelled
1,246
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.JetBlue Airways77%522 flights
  2. 2.Southwest Airlines73%640 flights

Not enough history to rank: Frontier Airlines (84 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning flights do better here.

PBI–ISP flights departing between 6–9 AM arrived on time 91% of the time, versus 55% between 6–9 PM.

Sunday scaries are real for this one.

PBI–ISP flights arrived on time 82% of the time on Wednesdays and just 65% on Sundays. That gap is worth planning around.

JetBlue Airways has a slight edge here.

JetBlue Airways arrived on time 77% of the time on this route; Southwest Airlines managed 73%.

Ticking up lately.

PBI–ISP flights arrived on time 72% of the time over the last three months in the data, compared with 67% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon71%(170 flights)
  • Tue76%(179 flights)
  • Wed82%(172 flights)
  • Thu68%(180 flights)
  • Fri71%(173 flights)
  • Sat78%(165 flights)
  • Sun65%(182 flights)
On-time by departure window
  • 6–9 AM91%(144 flights)
  • 9 AM–12 PM80%(316 flights)
  • 12–3 PM75%(372 flights)
  • 3–6 PM65%(110 flights)
  • 6–9 PM55%(183 flights)
  • 9 PM–12 AM58%(96 flights)
On-time trend by month
89%
May

Jun 65% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%101
July 202566%94
August 202576%88
September 202588%86
October 202591%91
November 202580%97
December 202567%131
January 202670%124
February 202665%125
March 202664%97
April 202664%105
May 202689%82

Same trip, other airports

Keep nerding

Based on 1,246 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.