Carrier route record
B6SJU→TPA
JetBlue Airways · San Juan to Tampa
- Flights
- 614
- Period
- July 2025 to June 2026
- Share of route
- 42%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on SJU to TPA sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 614 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate JetBlue on SJU to TPA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.9%
Arrivals under 15 minutes late, of 609 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
0.49%
National rate is 1.81%
Whole route
76.9%
Every carrier on SJU to TPA, 1,478 flights
These figures cover 614 flights between July 2025 and June 2026. Beyond the headline rate, 8.5% 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 SJU to TPA
JetBlue flew 614 of the 1,478 flights on SJU to TPA, about 42% of it. Its 75.9% on time is about level with the route as a whole at 76.9%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Southwest at 82.4% to Spirit at 55.8%. 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 |
|---|---|---|---|---|---|
| Southwest Airlines | 470 | 82.4% | 64 min | 0.85% | B+ |
| JetBlue Airways (this page) | 614 | 75.9% | 66 min | 0.49% | B+ |
| Frontier Airlinesthin sample | 344 | 74.0% | 91 min | 2.33% | C |
| Spirit Airlinesthin sample | 50 | 55.8% | 51 min | 14.00% | D− |
Flight by flight
JetBlue flight numbers on SJU to TPA
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 38 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–8am231 flights94.3%
- 8am–11am20 flights—
- 11am–2pm24 flights—
- 2pm–5pm149 flights56.1%
- 5pm–8pm62 flights59.7%
- 8pm–5am128 flights73.4%
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 94.3% of the time, against 56.1% for the afternoon window. That is 38 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 231 flights scheduled in it.
Across the year
JetBlue on SJU to TPA through the year
September is the best month on the calendar at 96.9% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. June was the busiest month here, with 80 flights.
Across the week, Tuesday is the strongest day at 82.1% on time and Sunday the weakest at 66.7%. 15 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 63% of the 9,764 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.
- 63%Late-arriving aircraft
- 28%Carrier
- 8%National Airspace System
- 0%Extreme weather
63% 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 9,764 reported delay minutes here, that single category outweighs weather by 63 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 9,764 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 94.3% on time here.
Cancellations are rare at 0.49%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
8.5% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 1,237 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 78.9% on time across 614 flights, 3 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 3 points of difference.
One caution: this is a thin sample. 614 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 SJU to TPA
Put together: treat all of this as provisional. 614 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 75.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 609 completed flights over 12 months sit behind that.
Related
Where to go next
- SJU to TPA, every carrier
- JetBlue on TPA to SJU, the return leg
- Southwest Airlines on SJU to TPA82.4%
- Frontier Airlines on SJU to TPA74.0%
- JetBlue Airways network-wide record
- Luis Munoz Marin International (SJU) delay statistics
- Tampa International (TPA) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.