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Flight Reliability

B6 640 · JetBlue Airways

Cleveland → Boston (CLE–BOS)

49
Bring Snacks
WanderNerd Reliability Score
61%
Arrive within 15 minutes
20 min
Average arrival delay
3.3%
Cancelled
3 min early
Median arrival delay

Based on 272 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

B6 640 departing between 9 AM–12 PM arrived on time 82% of the time, versus 37% between 3–6 PM.

Sunday scaries are real for this one.

B6 640 arrived on time 78% of the time on Saturdays and just 50% on Sundays. That gap is worth planning around.

Well behind the CLE–BOS route.

B6 640 arrived on time 61% of the time, versus 79% across the CLE–BOS route.

Lagging the JetBlue Airways network.

B6 640 arrived on time 61% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon55%(40 flights)
  • Tue59%(27 flights)
  • Wed77%(26 flights)
  • Thu54%(41 flights)
  • Fri59%(41 flights)
  • Sat78%(45 flights)
  • Sun50%(42 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM82%(72 flights)
  • 12–3 PM62%(115 flights)
  • 3–6 PM37%(70 flights)
  • 6–9 PM—(4 flights)
On-time trend by month
64%
May

Jun 46% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%22
July 202548%29
August 202570%23
September 202525%28
October 202555%31
November 202582%28
December 202559%27
March 202679%19
April 202689%26
May 202664%25
Departures on time
62%
Diverted
0.4%
Flights flown
262
Months covered
11

Same route, other flights

Keep nerding

Based on 272 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.