Flight profile · JetBlue
B6312
Chicago (ORD) to Boston (BOS) · scheduled 8:40 AM – 12:04 PM
How B6312 performs
992 operations, 2023-07-01 to 2026-06-30.
B6312 arrived on time 79.6% of the time, against 72.6% for all ORD → BOS flights — this specific departure is 7.1 percentage points better than the route as a whole. Against JetBlue’s own flights on this route it is 6.3 points better.
Source: US DOT Bureau of Transportation Statistics · 992 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| B6312 | 79.6% | 1.31% | -12 min | 8.3% | 992 |
| JetBlue on ORD → BOS | 73.4% | 1.53% | -9 min | 13.1% | 1,767 |
| All ORD → BOS flights | 72.6% | 1.80% | -5 min | 11.9% | 21,109 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does B6312 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 11.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 992 records of B6312 operating ORD → BOS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.