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Flight Reliability

B6 312 · JetBlue Airways

Chicago → Boston (ORD–BOS)

77
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
8 min
Average arrival delay
1.8%
Cancelled
10 min early
Median arrival delay

Based on 336 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

B6 312 departing between 6–9 AM arrived on time 82% of the time, versus 72% between 9 AM–12 PM.

Sunday scaries are real for this one.

B6 312 arrived on time 88% of the time on Wednesdays and just 71% on Sundays. That gap is worth planning around.

Better than the ORD–BOS route average.

B6 312 arrived on time 76% of the time, versus 69% across the ORD–BOS route.

A bit ahead of the JetBlue Airways network.

B6 312 arrived on time 76% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon71%(45 flights)
  • Tue82%(49 flights)
  • Wed88%(49 flights)
  • Thu76%(49 flights)
  • Fri71%(48 flights)
  • Sat76%(42 flights)
  • Sun71%(48 flights)
On-time by departure window
  • 6–9 AM82%(138 flights)
  • 9 AM–12 PM72%(185 flights)
  • 12–3 PM—(7 flights)
On-time trend by month
89%
May

Jun 93% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202583%29
August 202587%31
September 202580%30
October 202565%31
November 202558%26
December 202569%16
January 202672%25
February 202665%26
March 202663%30
April 202686%28
May 202689%28
Departures on time
80%
Diverted
0%
Flights flown
330
Months covered
12

Same route, other flights

Keep nerding

Based on 336 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.