Flight number record
B6 266
JetBlue Airways · Fort Myers to Boston
- Route
- RSW → BOS
- Departs
- 11:04
- Flights
- 279
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 266, check with JetBlue Airways.
B6 266 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 77.3%, so B6 266 runs 11 points behind the country as a whole. Across a thousand flights that is about 105 extra late arrivals.
Key figures
On time
66.8%
Arrivals under 15 minutes late, of 274 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
1.79%
National rate is 1.89%
1 hour+ late
14.2%
National rate is 8.3%
These figures cover 279 flights between September 2025 and August 2026. Beyond the headline rate, 14.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 266 flies
B6 266 flies RSW to BOS without a single fixed slot. Its most common scheduled departure was 11:04, used on 43 of 279 flights, with 11:16 (38 flights) and 15:45 (37 flights) next.
- Departs 11:0443 flights15.4%
- Departs 11:1638 flights13.6%
- Departs 15:4537 flights13.3%
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 11:04 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and B6 266 runs 12 points worse at 66.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
B6 266 next to RSW to BOS
Every carrier on RSW to BOS combined arrived on time 69.5% of the time across 2,168 flights, so B6 266 is 3 points behind it. JetBlue flew 1,543 flights on the same city pair under all its flight numbers, including this one, and those ran 69.1% 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 266thin sample | 279 | 66.8% | 79 min | 1.79% | C |
| All JetBlue Airways on RSW–BOS | 1,543 | 69.1% | 87 min | 3.05% | C− |
| All carriers on RSW–BOS | 2,168 | 69.5% | 84 min | 2.91% | C |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 266 quarter by quarter
B6 266 did not run the same all year. Its best quarter was Jul–Sep 2026 at 82.0% on time and its weakest Oct–Dec 2025 at 56.5%, a swing of 26 points on roughly 56 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 flights56.7%
- Oct–Dec 202548 flights56.5%
- Jan–Mar 202650 flights59.2%
- Apr–Jun 202689 flights69.3%
- Jul–Sep 202662 flights82.0%
Scale runs 50% to 85%.
By weekday, B6 266 did best on Saturday at 77.1% on time and worst on Thursday at 57.5%. Each day rests on about 40 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 266 runs when it is late
B6 266 often beats the schedule: 73 of 274 completed flights, 27%, arrived 15 minutes or more early. The 91 late arrivals split 14 under half an hour, 38 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early73 flights26.6%
- Within 15 min110 flights40.1%
- 15–29 min late14 flights5.1%
- 30–59 min late38 flights13.9%
- 1–2 hours late25 flights9.1%
- 2+ hours late14 flights5.1%
Scale runs 0% to 100%.
Share of 274 completed flights by arrival against schedule.
13 of 89 late departures made up the time and arrived on time, 15% of them. In the other direction, 15 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 BOS.
The worst days
Worst days for B6 266
The latest arrival of the period was on 29 November 2025, 7 hours 16 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across November, October, April and September, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 November 2025 | 7 hours 16 minutes | Late-arriving aircraft |
| 13 October 2025 | 4 hours 47 minutes | National Airspace System |
| 16 October 2025 | 4 hours 25 minutes | Late-arriving aircraft |
| 6 April 2026 | 4 hours 23 minutes | Extreme weather |
| 15 September 2025 | 4 hours 3 minutes | Carrier |
Delay causes
Why B6 266 runs late
National Airspace System accounts for 43% of the 7,194 delay minutes carriers reported here, and the remaining four split what is left.
- 43%National Airspace System
- 35%Late-arriving aircraft
- 16%Carrier
- 6%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,194 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 7,194 delay minutes reported on B6 266.
Cancellations sit at 1.79% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
14.2% 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 1,249 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 279 flights under B6 266 in the data flew RSW to BOS. 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 266
For a booking, B6 266 is a flight to put a long connection behind. 14.2% 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.
Related
Where to go next
- RSW to BOS, every carrier and departure
- BOS to RSW, the return direction
- JetBlue Airways 2066 on the same route58.1%
- Southwest Florida International (RSW) delay statistics
- Boston Logan International (BOS) 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.