Carrier route record
B6BOS→PIT
JetBlue Airways · Boston to Pittsburgh
- Flights
- 1,008
- Period
- July 2025 to June 2026
- Share of route
- 47%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on BOS to PIT lands a B, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 1,008 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate JetBlue on BOS to PIT from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.6%
Arrivals under 15 minutes late, of 977 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
2.88%
National rate is 1.81%
Whole route
78.7%
Every carrier on BOS to PIT, 2,152 flights
These figures cover 1,008 flights between July 2025 and June 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
JetBlue against every carrier on BOS to PIT
JetBlue flew 1,008 of the 2,152 flights on BOS to PIT, about 47% of it. Its 76.6% on time is 2 points worse than the route as a whole, which runs 78.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Republic at 80.6% to JetBlue at 76.6%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways | 1,144 | 80.6% | 65 min | 2.45% | B |
| JetBlue Airways (this page) | 1,008 | 76.6% | 72 min | 2.88% | B |
Flight by flight
JetBlue flight numbers on BOS to PIT
Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am208 flights89.6%
- 8am–11am172 flights87.6%
- 11am–2pm170 flights80.2%
- 2pm–5pm138 flights69.7%
- 5pm–8pm191 flights62.2%
- 8pm–5am129 flights64.2%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 62.2% on time, against 89.6% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 208 flights scheduled in it.
Across the year
JetBlue on BOS to PIT through the year
January is the weak month at 54.8% on time, against 87.9% in August. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. June was the busiest month here, with 109 flights.
Across the week, Wednesday is the strongest day at 83.6% on time and Sunday the weakest at 71.1%. 13 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 17,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 55%Late-arriving aircraft
- 29%Carrier
- 13%National Airspace System
- 3%Extreme weather
55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 17,000 reported delay minutes here, that single category outweighs weather by 20 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 16,566 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.6% on time here.
Cancellations run at 2.88%, against 1.81% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 496 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg runs 76.5% on time across 1,007 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 1,008 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking JetBlue on BOS to PIT
Put together: the delay figures matter less here than the 2.88% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 977 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to PIT, every carrier
- JetBlue on PIT to BOS, the return leg
- Republic Airways on BOS to PIT80.6%
- JetBlue Airways network-wide record
- Boston Logan International (BOS) delay statistics
- Pittsburgh International (PIT) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.