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Flight Reliability

B6 423 · JetBlue Airways

New York → Los Angeles (JFK–LAX)

80
Pretty Reliable
WanderNerd Reliability Score
74%
Arrive within 15 minutes
9 min
Average arrival delay
0.6%
Cancelled
8 min early
Median arrival delay

Based on 350 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

B6 423 departing between 12–3 PM arrived on time 89% of the time, versus 53% between 9 PM–12 AM.

Sunday scaries are real for this one.

B6 423 arrived on time 90% of the time on Wednesdays and just 62% on Sundays. That gap is worth planning around.

A bit behind the JFK–LAX route.

B6 423 arrived on time 74% of the time, versus 79% across the JFK–LAX route.

Trending in the right direction.

B6 423 arrived on time 76% of the time over the last three months in the data, compared with 61% in the three months before that.

The breakdown

On-time by weekday
  • Mon74%(50 flights)
  • Tue72%(50 flights)
  • Wed90%(50 flights)
  • Thu80%(49 flights)
  • Fri69%(49 flights)
  • Sat74%(50 flights)
  • Sun62%(50 flights)
On-time by departure window
  • 12–3 PM89%(150 flights)
  • 3–6 PM61%(23 flights)
  • 6–9 PM65%(160 flights)
  • 9 PM–12 AM53%(15 flights)
On-time trend by month
84%
May

Jun 70% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%30
July 202584%31
August 202590%31
September 2025100%30
October 202574%31
November 202559%29
December 202550%30
January 202666%29
February 202669%16
March 202673%30
April 202670%30
May 202684%31
Departures on time
77%
Diverted
0%
Flights flown
348
Months covered
12

Same route, other flights

Keep nerding

Based on 350 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.