Flight number record
B6 1434
JetBlue Airways · San Juan to Orlando
- Route
- SJU → MCO
- Departs
- 05:01
- Flights
- 269
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 1434, check with JetBlue Airways.
B6 1434 lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 269 flights, with a median arrival 9 minutes early.
Key figures
On time
79.2%
Arrivals under 15 minutes late, of 265 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
1.49%
National rate is 1.89%
1 hour+ late
11.3%
National rate is 8.3%
These figures cover 269 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 1434 flies
B6 1434 flies SJU to MCO without a single fixed slot. Its most common scheduled departure was 05:01, used on 96 of 269 flights, with 19:45 (31 flights) next.
- Departs 05:0196 flights35.7%
- Departs 19:4531 flights11.5%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 05:01 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and B6 1434 runs 10 points worse at 79.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
B6 1434 next to SJU to MCO
Every carrier on SJU to MCO combined arrived on time 78.0% of the time across 6,134 flights, so B6 1434 is about level with it. JetBlue flew 2,194 flights on the same city pair under all its flight numbers, including this one, and those ran 74.8% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 1434thin sample | 269 | 79.2% | 95 min | 1.49% | B |
| All JetBlue Airways on SJU–MCO | 2,194 | 74.8% | 76 min | 1.55% | C |
| All carriers on SJU–MCO | 6,134 | 78.0% | 77 min | 1.21% | B |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 1434 quarter by quarter
B6 1434 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.6% on time and its weakest Jan–Mar 2026 at 65.4%, a swing of 31 points on roughly 67 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 20252 flights—
- Oct–Dec 202566 flights71.2%
- Jan–Mar 202680 flights65.4%
- Apr–Jun 202659 flights96.6%
- Jul–Sep 202662 flights88.3%
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, B6 1434 did best on Thursday at 94.6% on time and worst on Monday at 68.3%. Each day rests on about 38 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 1434 runs when it is late
B6 1434 often beats the schedule: 84 of 265 completed flights, 32%, arrived 15 minutes or more early. When B6 1434 is late it tends to be very late: 30 of its 55 late arrivals were an hour or more behind, and 16 were two hours or more.
- 15+ min early84 flights31.7%
- Within 15 min126 flights47.5%
- 15–29 min late15 flights5.7%
- 30–59 min late10 flights3.8%
- 1–2 hours late14 flights5.3%
- 2+ hours late16 flights6.0%
Scale runs 0% to 100%.
Share of 265 completed flights by arrival against schedule.
8 of 57 late departures made up the time and arrived on time, 14% of them. 6 flights left on time and still arrived late.
The worst days
Worst days for B6 1434
The latest arrival of the period was on 17 March 2026, 5 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 5 hours 46 minutes | Late-arriving aircraft |
| 24 July 2026 | 5 hours 19 minutes | Carrier |
| 11 January 2026 | 5 hours 6 minutes | Late-arriving aircraft |
| 4 August 2026 | 4 hours 54 minutes | Carrier |
| 1 August 2026 | 3 hours 27 minutes | Carrier |
Delay causes
Why B6 1434 runs late
Late-arriving aircraft accounts for 50% of the 5,249 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 45%Carrier
- 3%National Airspace System
- 1%Security
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,249 reported delay minutes here, that single category outweighs weather by 50 to one. The split is drawn from 5,249 delay minutes reported on B6 1434.
Cancellations sit at 1.49% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
11.3% 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 1,188 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.
Every one of the 269 flights under B6 1434 in the data flew SJU to MCO. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 269 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 B6 1434
For a booking, read B6 1434 as 79.2% on time with 1.49% cancelled over 269 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SJU to MCO, every carrier and departure
- MCO to SJU, the return direction
- JetBlue Airways 1334 on the same route70.2%
- JetBlue Airways 1134 on the same route69.1%
- Frontier Airlines 1823 on the same route82.8%
- Frontier Airlines 4725 on the same route68.4%
- Frontier Airlines 2249 on the same route87.2%
- Luis Munoz Marin International (SJU) delay statistics
- Orlando International (MCO) delay statistics
- JetBlue Airways on-time record
- Every JetBlue Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means JetBlue Airways’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.