Flight number record

B6 383

JetBlue Airways · New York to Orlando

Route: JFK → MCO
Departs: 21:40
Flights: 279
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 383, check with JetBlue Airways.

B6 383 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 279 flights, with a median arrival 1 minute early.

The national on-time rate over the same period is 77.6%, so B6 383 runs 12 points behind the country as a whole. Across a thousand flights that is about 123 extra late arrivals.

On time

65.3%

Arrivals under 15 minutes late, of 271 completed flights

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

2.15%

National rate is 1.81%

1 hour+ late

16.2%

National rate is 8.1%

These figures cover 279 flights between July 2025 and June 2026. Beyond the headline rate, 16.2% 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 383 flies

B6 383 flies JFK to MCO without a single fixed slot. Its most common scheduled departure was 21:40, used on 62 of 279 flights, with 20:00 (49 flights) and 06:30 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:4062 flights22.2%
Departs 20:0049 flights17.6%
Departs 06:3048 flights17.2%

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 21:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and B6 383 runs 5 points worse at 65.3%. 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 383 next to JFK to MCO

Every carrier on JFK to MCO combined arrived on time 73.7% of the time across 4,887 flights, so B6 383 is 8 points behind it. JetBlue flew 2,614 flights on the same city pair under all its flight numbers, including this one, and those ran 70.8% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 7 points.

B6 383 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 383thin sample	279	65.3%	70 min	2.15%	C
All JetBlue Airways on JFK–MCO	2,614	70.8%	78 min	3.10%	C−
All carriers on JFK–MCO	4,887	73.7%	75 min	2.93%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 383 quarter by quarter

B6 383 did not run the same all year. Its best quarter was Apr–Jun 2026 at 72.9% on time and its weakest Jul–Sep 2025 at 58.6%, a swing of 14 points on roughly 70 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 202588 flights58.6%
Oct–Dec 202587 flights66.7%
Jan–Mar 202654 flights67.3%
Apr–Jun 202650 flights72.9%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, B6 383 did best on Thursday at 71.8% on time and worst on Saturday at 52.5%. Each day rests on about 40 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 383 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 6,544 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
51%
Carrier
27%
National Airspace System
16%
Extreme weather
7%
Security
0%

51% 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 6,544 reported delay minutes here, that single category outweighs weather by 8 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 6,544 delay minutes reported on B6 383.

Cancellations sit at 2.15% against a national 1.81%, which is ordinary. Diversions add another 0.72%.

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. 16.2% 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 944 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 279 flights under B6 383 in the data flew JFK 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. 279 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 383

For a booking, B6 383 is a flight to put a long connection behind. 16.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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