Carrier route record
B6TPA→SJU
JetBlue Airways · Tampa to San Juan
- Flights
- 680
- Period
- September 2025 to August 2026
- Share of route
- 44%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on TPA to SJU lands a B, about a point worse than the national rate of 77.3%. 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 rests on 680 flights, with a median arrival 1 minute early.
The US average over the same twelve months is 77.3%, so there is little to separate JetBlue on TPA to SJU from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.0%
Arrivals under 15 minutes late, of 668 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
1.62%
National rate is 1.89%
Whole route
72.7%
Every carrier on TPA to SJU, 1,561 flights
These figures cover 680 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
JetBlue against every carrier on TPA to SJU
JetBlue flew 680 of the 1,561 flights on TPA to SJU, about 44% of it. Its 76.0% on time is 3 points better than the route as a whole, which runs 72.7%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Spirit at 81.8% to Southwest at 66.5%. 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 |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 51 | 81.8% | 34 min | 13.73% | B− |
| JetBlue Airways (this page) | 680 | 76.0% | 81 min | 1.62% | B |
| Frontier Airlinesthin sample | 360 | 73.3% | 109 min | 2.22% | C |
| Southwest Airlines | 470 | 66.5% | 52 min | 0.43% | C+ |
Flight by flight
JetBlue flight numbers on TPA to SJU
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 29 points, against half a point between the best and worst carrier.
- 5am–8am129 flights93.7%
- 8am–11am85 flights81.9%
- 11am–2pm68 flights80.9%
- 2pm–5pm104 flights68.3%
- 5pm–8pm164 flights71.2%
- 8pm–5am130 flights64.5%
Scale runs 55% to 100%.
The 8pm–5am window is where this operation falls apart: 64.5% on time, against 93.7% 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 5pm–8pm window is the busiest, with 164 flights scheduled in it.
Across the year
JetBlue on TPA to SJU through the year
Delays peak in October, when the on-time rate falls to 62.9%. February is the strongest month at 91.4%. Moving a flexible trip across that boundary buys 29 points. July was the busiest month here, with 93 flights.
Across the week, Wednesday is the strongest day at 80.0% on time and Sunday the weakest at 69.4%, a spread of 11 points.
Arrival by arrival
How late JetBlue on TPA to SJU runs when it is late
The 160 late arrivals split 41 under half an hour, 52 between 30 and 60 minutes, and 67 an hour or more.
- 15+ min early74 flights11.1%
- Within 15 min434 flights65.0%
- 15–29 min late41 flights6.1%
- 30–59 min late52 flights7.8%
- 1–2 hours late40 flights6.0%
- 2+ hours late27 flights4.0%
Scale runs 0% to 100%.
Share of 668 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 167 departures that left 15 minutes late or more, only 20 made it up before arrival. Only 13 left on time and still arrived late.
The worst days
Worst days for JetBlue on TPA to SJU
The latest arrival of the period was on 23 July 2026, 6 hours 32 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 July 2026 | 6 hours 32 minutes | Late-arriving aircraft |
| 12 August 2026 | 6 hours 32 minutes | Late-arriving aircraft |
| 10 October 2025 | 6 hours 30 minutes | Late-arriving aircraft |
| 3 August 2026 | 6 hours 24 minutes | Late-arriving aircraft |
| 26 May 2026 | 6 hours 15 minutes | Late-arriving aircraft |
Delay causes
Why JetBlue runs late on this route
Late-arriving aircraft accounts for 61% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Late-arriving aircraft
- 32%Carrier
- 6%National Airspace System
- 1%Extreme weather
61% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 52 to one. The split is drawn from 12,982 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 93.7% on time here.
Cancellations sit at 1.62% against a national 1.89%, which is ordinary. Diversions add another 0.15%.
Connections and stage length
What a delay here costs
10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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.
The return leg runs 77.1% on time across 680 flights, within about 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. 680 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 TPA to SJU
Put together: treat all of this as provisional. 680 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 76.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 668 completed flights over 12 months sit behind that.
Related
Where to go next
- TPA to SJU, every carrier
- JetBlue on SJU to TPA, the return leg
- Frontier Airlines on TPA to SJU73.3%
- Southwest Airlines on TPA to SJU66.5%
- JetBlue Airways network-wide record
- Tampa International (TPA) delay statistics
- Luis Munoz Marin International (SJU) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.