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Route Reliability

Newark → San Juan

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

62
A Little Dicey
WanderNerd Reliability Score
71%
Arrive within 15 minutes
18 min
Average arrival delay
3.1%
Cancelled
2,120
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%617 flights
  2. 2.United Airlines71%1,113 flights
  3. 3.Spirit Airlines69%146 flights
  4. 4.Frontier Airlines56%244 flights

What the data says

Morning-you made the right choice.

EWR–SJU flights departing between 3–6 AM arrived on time 82% of the time, versus 60% between 9 PM–12 AM.

Skip Monday if you can.

EWR–SJU flights arrived on time 77% of the time on Tuesdays. On Mondays: 65%.

JetBlue Airways has a clear lead on this route.

JetBlue Airways arrived on time 77% of the time on this route; Frontier Airlines managed 56%.

Keep a backup plan handy.

This route was cancelled 3.1% 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
  • Mon65%(302 flights)
  • Tue77%(281 flights)
  • Wed76%(294 flights)
  • Thu70%(297 flights)
  • Fri71%(303 flights)
  • Sat72%(284 flights)
  • Sun68%(291 flights)
On-time by departure window
  • 3–6 AM82%(85 flights)
  • 6–9 AM75%(589 flights)
  • 9 AM–12 PM74%(547 flights)
  • 12–3 PM66%(32 flights)
  • 3–6 PM71%(120 flights)
  • 6–9 PM66%(464 flights)
  • 9 PM–12 AM60%(215 flights)
On-time trend by month
88%
May

Jun 74% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%176
July 202567%187
August 202571%189
September 202576%152
October 202563%142
November 202559%140
December 202564%191
January 202666%197
February 202668%166
March 202674%187
April 202681%191
May 202688%134

Same trip, other airports

Keep nerding

Based on 2,120 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.