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Flight Reliability

B6 389 · JetBlue Airways

Newark → San Juan (EWR–SJU)

74
Usually Fine
WanderNerd Reliability Score
79%
Arrive within 15 minutes
6 min
Average arrival delay
3.2%
Cancelled
5 min early
Median arrival delay

Based on 188 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

B6 389 arrived on time 93% of the time on Wednesdays and just 71% on Mondays. That gap is worth planning around.

Better than the EWR–SJU route average.

B6 389 arrived on time 79% of the time, versus 71% across the EWR–SJU route.

A bit ahead of the JetBlue Airways network.

B6 389 arrived on time 79% of the time, versus 73% across the JetBlue Airways network.

Keep a backup plan handy.

B6 389 was cancelled 3.2% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon71%(28 flights)
  • Tue76%(29 flights)
  • Wed93%(30 flights)
  • Thu76%(29 flights)
  • Fri82%(28 flights)
  • Sat73%(11 flights)
  • Sun74%(27 flights)
On-time by departure window
  • 6–9 AM79%(173 flights)
  • 9 AM–12 PM—(7 flights)
  • 3–6 PM—(2 flights)
On-time trend by month
94%
May

Nov 88% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202588%25
December 202579%28
January 202664%28
February 202670%23
March 202685%27
April 202679%28
May 202694%17
Departures on time
82%
Diverted
0%
Flights flown
182
Months covered
8

Same route, other flights

Keep nerding

Based on 188 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.