Carrier route record
B6TPA→BOS
JetBlue Airways · Tampa to Boston
- Flights
- 1,580
- Period
- July 2025 to June 2026
- Share of route
- 56%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on TPA to BOS sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 1,580 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.6%, so JetBlue on TPA to BOS runs 4 points behind the country as a whole. Across a thousand flights that is about 42 extra late arrivals.
Key figures
On time
73.4%
Arrivals under 15 minutes late, of 1,534 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
2.85%
National rate is 1.81%
Whole route
74.2%
Every carrier on TPA to BOS, 2,825 flights
These figures cover 1,580 flights between July 2025 and June 2026. Beyond the headline rate, 12.1% 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 TPA to BOS
JetBlue flew 1,580 of the 2,825 flights on TPA to BOS, most of the route. Its 73.4% on time is about level with the route as a whole at 74.2%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Delta at 76.7% to American at 37.5%. Two 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 |
|---|---|---|---|---|---|
| Delta Air Lines | 1,168 | 76.7% | 79 min | 2.14% | B |
| JetBlue Airways (this page) | 1,580 | 73.4% | 74 min | 2.85% | C |
| Frontier Airlinesthin sample | 68 | 53.7% | 92 min | 1.47% | F |
| American Airlinesthin sample | 9 | 37.5% | 87 min | 11.11% | F− |
Flight by flight
JetBlue flight numbers on TPA 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 35 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–8am389 flights94.0%
- 8am–11am254 flights83.1%
- 11am–2pm281 flights66.4%
- 2pm–5pm215 flights58.7%
- 5pm–8pm196 flights60.8%
- 8pm–5am245 flights60.7%
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 94.0% of the time, against 58.7% for the afternoon window. That is 35 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 389 flights scheduled in it.
Across the year
JetBlue on TPA to BOS through the year
May is the best month on the calendar at 81.8% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. April was the busiest month here, with 184 flights.
Across the week, Wednesday is the strongest day at 77.9% on time and Sunday the weakest at 68.6%. 9 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 30,000 reported delay minutes.
- 41%Late-arriving aircraft
- 35%National Airspace System
- 22%Carrier
- 1%Extreme weather
41% 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 30,000 reported delay minutes here, that single category outweighs weather by 41 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 30,356 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 11,000 minutes out of 30,000, against a national NAS share of 21%.
Cancellations run at 2.85%, against 1.81% nationally. That is roughly one flight in 40 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. 12.1% 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 1,185 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 runs 74.1% on time across 1,576 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.
The sample behind these figures is 1,580 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking JetBlue on TPA to BOS
Put together: the delay figures matter less here than the 2.85% 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. 1,534 completed flights over 12 months sit behind that.
Related
Where to go next
- TPA to BOS, every carrier
- JetBlue on BOS to TPA, the return leg
- Delta Air Lines on TPA to BOS76.7%
- JetBlue Airways network-wide record
- Tampa International (TPA) delay statistics
- Boston Logan International (BOS) 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.