Flight number record
B6 499
JetBlue Airways · New York to Orlando
- Route
- LGA → MCO
- Departs
- 10:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 499, check with JetBlue Airways.
B6 499 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 365 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so B6 499 runs 11 points behind the country as a whole. Across a thousand flights that is about 106 extra late arrivals.
Key figures
On time
66.7%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
2.74%
National rate is 1.89%
1 hour+ late
16.8%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 16.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 499 flies
B6 499 flies LGA to MCO without a single fixed slot. Its most common scheduled departure was 10:00, used on 81 of 365 flights, with 14:00 (55 flights) and 21:35 (37 flights) next.
- Departs 10:0081 flights22.2%
- Departs 14:0055 flights15.1%
- Departs 21:3537 flights10.1%
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 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and B6 499 runs 17 points worse at 66.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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.
Against the route
B6 499 next to LGA to MCO
Every carrier on LGA to MCO combined arrived on time 70.1% of the time across 5,149 flights, so B6 499 is 3 points behind it. JetBlue flew 1,206 flights on the same city pair under all its flight numbers, including this one, and those ran 68.0% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 499 | 365 | 66.7% | 90 min | 2.74% | C |
| All JetBlue Airways on LGA–MCO | 1,206 | 68.0% | 83 min | 4.81% | C− |
| All carriers on LGA–MCO | 5,149 | 70.1% | 81 min | 4.68% | C− |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 499 quarter by quarter
B6 499 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Oct–Dec 2025 at 56.7%, a swing of 37 points on roughly 73 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 202530 flights93.3%
- Oct–Dec 202592 flights56.7%
- Jan–Mar 202690 flights59.8%
- Apr–Jun 202691 flights67.4%
- Jul–Sep 202662 flights76.7%
Scale runs 50% to 100%.
By weekday, B6 499 did best on Friday at 78.4% on time and worst on Sunday at 50.0%. Each day rests on about 52 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 499 runs when it is late
B6 499 often beats the schedule: 88 of 351 completed flights, 25%, arrived 15 minutes or more early. When B6 499 is late it tends to be very late: 59 of its 117 late arrivals were an hour or more behind, and 26 were two hours or more.
- 15+ min early88 flights25.1%
- Within 15 min146 flights41.6%
- 15–29 min late26 flights7.4%
- 30–59 min late32 flights9.1%
- 1–2 hours late33 flights9.4%
- 2+ hours late26 flights7.4%
Scale runs 0% to 100%.
Share of 351 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 107 departures that left 15 minutes late or more, only 12 made it up before arrival. In the other direction, 22 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MCO.
The worst days
Worst days for B6 499
The latest arrival of the period was on 12 March 2026, 7 hours 28 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 March 2026 | 7 hours 28 minutes | Late-arriving aircraft |
| 18 July 2026 | 7 hours 13 minutes | Extreme weather |
| 29 September 2025 | 6 hours 36 minutes | Late-arriving aircraft |
| 14 July 2026 | 6 hours 15 minutes | Late-arriving aircraft |
| 9 November 2025 | 6 hours 3 minutes | National Airspace System |
Delay causes
Why B6 499 runs late
Late-arriving aircraft accounts for 54% of the 11,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 23%National Airspace System
- 18%Carrier
- 4%Extreme weather
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 11,000 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 10,519 delay minutes reported on B6 499.
Cancellations run at 2.74%, against 1.89% nationally. That is roughly one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
16.8% 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 950 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 365 flights under B6 499 in the data flew LGA 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. 365 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 499
For a booking, the cancellation rate is the figure to plan around on B6 499: 2.74% of its 365 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to MCO, every carrier and departure
- MCO to LGA, the return direction
- Delta Air Lines 2520 on the same route59.9%
- Delta Air Lines 2561 on the same route67.4%
- Delta Air Lines 2564 on the same route80.2%
- LaGuardia (LGA) 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.