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Flight Reliability

B6 851 · JetBlue Airways

Boston → Orlando (BOS–MCO)

67
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
7 min
Average arrival delay
3.9%
Cancelled
5 min early
Median arrival delay

Based on 207 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

B6 851 departing between 6–9 AM arrived on time 82% of the time, versus 66% between 9 AM–12 PM.

Saturdays have been rough.

B6 851 arrived on time 86% of the time on Wednesdays and just 64% on Saturdays. That gap is worth planning around.

A bit ahead of the BOS–MCO route.

B6 851 arrived on time 77% of the time, versus 71% across the BOS–MCO route.

A bit ahead of the JetBlue Airways network.

B6 851 arrived on time 77% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon70%(27 flights)
  • Tue79%(28 flights)
  • Wed86%(29 flights)
  • Thu83%(29 flights)
  • Fri82%(27 flights)
  • Sat64%(28 flights)
  • Sun73%(30 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM82%(139 flights)
  • 9 AM–12 PM66%(58 flights)
On-time trend by month
90%
May

Nov 86% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202586%28
December 202568%31
January 202660%30
February 202676%25
March 202679%29
April 202683%29
May 202690%20
Departures on time
88%
Diverted
0.5%
Flights flown
198
Months covered
8

Same route, other flights

Keep nerding

Based on 207 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.