Skip to content
WanderNerd
Check a flight

Route Reliability

San Juan → Newark

SJU–EWR · 1,608 miles · Luis Muñoz Marín International Airport to Newark Liberty International Airport

66
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
14 min
Average arrival delay
3.4%
Cancelled
2,119
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines77%1,113 flights
  2. 2.JetBlue Airways76%615 flights
  3. 3.Frontier Airlines69%245 flights
  4. 4.Spirit Airlines64%146 flights

What the data says

Morning-you made the right choice.

SJU–EWR flights departing between 9 AM–12 PM arrived on time 86% of the time, versus 65% between 12–3 PM.

Sunday scaries are real for this one.

SJU–EWR flights arrived on time 80% of the time on Tuesdays. On Sundays: 69%.

United Airlines runs this route best.

United Airlines arrived on time 77% of the time on this route; Spirit Airlines managed 64%.

Keep a backup plan handy.

This route was cancelled 3.4% of the time. Typical for U.S. flights is around 1–2%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon71%(301 flights)
  • Tue80%(284 flights)
  • Wed77%(287 flights)
  • Thu77%(289 flights)
  • Fri74%(304 flights)
  • Sat77%(290 flights)
  • Sun69%(286 flights)
On-time by departure window
  • 12–3 AM85%(362 flights)
  • 3–6 AM86%(70 flights)
  • 6–9 AM84%(154 flights)
  • 9 AM–12 PM86%(109 flights)
  • 12–3 PM65%(394 flights)
  • 3–6 PM67%(460 flights)
  • 6–9 PM78%(386 flights)
  • 9 PM–12 AM70%(106 flights)
On-time trend by month
86%
May

Jun 77% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%174
July 202562%188
August 202569%191
September 202575%150
October 202574%140
November 202578%139
December 202576%190
January 202675%197
February 202671%164
March 202675%185
April 202683%189
May 202686%134

Same trip, other airports

Keep nerding

Based on 2,119 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.