Carrier route record
B6CLE→BOS
JetBlue Airways · Cleveland to Boston
- Flights
- 726
- Period
- July 2025 to June 2026
- Share of route
- 43%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on CLE to BOS sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 726 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.6%, so JetBlue on CLE to BOS runs 6 points behind the country as a whole. Across a thousand flights that is about 61 extra late arrivals.
Key figures
On time
71.5%
Arrivals under 15 minutes late, of 709 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.34%
National rate is 1.81%
Whole route
78.8%
Every carrier on CLE to BOS, 1,682 flights
These figures cover 726 flights between July 2025 and June 2026. Beyond the headline rate, 12.7% 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 CLE to BOS
JetBlue flew 726 of the 1,682 flights on CLE to BOS, about 43% of it. Its 71.5% on time is 7 points worse than the route as a whole, which runs 78.8%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Frontier at 90.7% to JetBlue at 71.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Frontier Airlinesthin sample | 88 | 90.7% | 47 min | 2.27% | A |
| Republic Airways | 868 | 83.7% | 70 min | 2.19% | B |
| JetBlue Airways (this page) | 726 | 71.5% | 75 min | 2.34% | C |
Flight by flight
JetBlue flight numbers on CLE to BOS
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 40 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–8am171 flights86.9%
- 8am–11am147 flights78.5%
- 11am–2pm195 flights74.9%
- 2pm–5pm139 flights46.7%
- 5pm–8pm19 flights—
- 8pm–5am55 flights51.9%
Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 86.9% of the time, against 46.7% for the afternoon window. That is 40 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 195 flights scheduled in it.
Across the year
JetBlue on CLE to BOS through the year
December is the weak month at 57.4% on time, against 90.5% in April. 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. July was the busiest month here, with 89 flights.
Across the week, Saturday is the strongest day at 82.1% on time and Sunday the weakest at 60.2%. 22 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 43% of the 15,000 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.
- 43%Late-arriving aircraft
- 35%National Airspace System
- 20%Carrier
- 2%Extreme weather
- 0%Security
43% 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 15,000 reported delay minutes here, that single category outweighs weather by 25 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 15,093 reported delay minutes.
35% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 5,286 minutes out of 15,000, against a national NAS share of 21%.
Cancellations sit at 2.34% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
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. 12.7% 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.
The 563 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 75.4% on time across 725 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
One caution: this is a thin sample. 726 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 CLE to BOS
Put together: treat all of this as provisional. 726 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 71.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 709 completed flights over 12 months sit behind that.
Related
Where to go next
- CLE to BOS, every carrier
- JetBlue on BOS to CLE, the return leg
- Republic Airways on CLE to BOS83.7%
- JetBlue Airways network-wide record
- Cleveland Hopkins International (CLE) delay statistics
- Boston Logan International (BOS) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.