Flight number record

B6 1453

JetBlue Airways · Fort Lauderdale to San Juan

Route: FLL → SJU
Departs: 17:55
Flights: 309
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 1453, check with JetBlue Airways.

B6 1453 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 309 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so B6 1453 runs 7 points behind the country as a whole. Across a thousand flights that is about 68 extra late arrivals.

On time

70.8%

Arrivals under 15 minutes late, of 305 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

1.29%

National rate is 1.81%

1 hour+ late

10.5%

National rate is 8.1%

These figures cover 309 flights between July 2025 and June 2026. Beyond the headline rate, 10.5% 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.

Schedule

When B6 1453 flies

B6 1453 flies FLL to SJU without a single fixed slot. Its most common scheduled departure was 17:55, used on 63 of 309 flights, with 17:40 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:5563 flights20.4%
Departs 17:4050 flights16.2%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 17:55 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and B6 1453 runs 3 points better at 70.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

B6 1453 next to FLL to SJU

Every carrier on FLL to SJU combined arrived on time 68.0% of the time across 2,344 flights, so B6 1453 is 3 points ahead of it. JetBlue flew 1,646 flights on the same city pair under all its flight numbers, including this one, and those ran 71.0% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 2 points.

B6 1453 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 1453thin sample	309	70.8%	61 min	1.29%	C
All JetBlue Airways on FLL–SJU	1,646	71.0%	58 min	1.22%	C
All carriers on FLL–SJU	2,344	68.0%	62 min	1.32%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 1453 quarter by quarter

B6 1453 did not run the same all year. Its best quarter was Apr–Jun 2026 at 81.8% on time and its weakest Jan–Mar 2026 at 48.0%, a swing of 34 points on roughly 77 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 202592 flights69.2%
Oct–Dec 202587 flights75.9%
Jan–Mar 202652 flights48.0%
Apr–Jun 202678 flights81.8%

Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, B6 1453 did best on Wednesday at 81.8% on time and worst on Sunday at 61.4%. Each day rests on about 44 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 1453 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 57% of the 5,384 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.

Late-arriving aircraft
57%
Carrier
31%
National Airspace System
7%
Extreme weather
4%
Security
1%

57% 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 5,384 reported delay minutes here, that single category outweighs weather by 16 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 5,384 delay minutes reported on B6 1453.

Cancellations sit at 1.29% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.5% 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 1,046 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.

Every one of the 309 flights under B6 1453 in the data flew FLL to SJU. 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. 309 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 1453

For a booking, read B6 1453 as 70.8% on time with 1.29% cancelled over 309 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures