Flight number record
B6 717
JetBlue Airways · Boston to New York
- Route
- BOS → JFK
- Departs
- 12:20
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 717, check with JetBlue Airways.
B6 717 draws a D−. Roughly 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 360 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so B6 717 runs 17 points behind the country as a whole. Across a thousand flights that is about 170 extra late arrivals.
Key figures
On time
60.3%
Arrivals under 15 minutes late, of 345 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
4.17%
National rate is 1.89%
1 hour+ late
16.8%
National rate is 8.3%
These figures cover 360 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 717 flies
B6 717 flies BOS to JFK without a single fixed slot. Its most common scheduled departure was 12:20, used on 44 of 360 flights.
- Departs 12:2044 flights12.2%
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 12:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and B6 717 runs 18 points worse at 60.3%. 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 717 next to BOS to JFK
Every carrier on BOS to JFK combined arrived on time 74.2% of the time across 5,614 flights, so B6 717 is 14 points behind it. JetBlue flew 2,389 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 71.3%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 717thin sample | 360 | 60.3% | 80 min | 4.17% | D− |
| All JetBlue Airways on BOS–JFK | 2,389 | 70.8% | 79 min | 5.44% | C− |
| All carriers on BOS–JFK | 5,614 | 74.2% | 71 min | 5.58% | C− |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 717 quarter by quarter
B6 717 did not run the same all year. Its best quarter was Oct–Dec 2025 at 66.3% on time and its weakest Jul–Sep 2026 at 40.4%, a swing of 26 points on roughly 90 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 202528 flights—
- Oct–Dec 202591 flights66.3%
- Jan–Mar 202688 flights52.3%
- Apr–Jun 202691 flights66.3%
- Jul–Sep 202662 flights40.4%
Scale runs 30% to 70%. Rows with fewer than 30 flights show a dash.
By weekday, B6 717 did best on Wednesday at 72.5% on time and worst on Sunday at 44.9%. Each day rests on about 51 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 717 runs when it is late
The 137 late arrivals split 34 under half an hour, 45 between 30 and 60 minutes, and 58 an hour or more.
- 15+ min early85 flights24.6%
- Within 15 min123 flights35.7%
- 15–29 min late34 flights9.9%
- 30–59 min late45 flights13.0%
- 1–2 hours late32 flights9.3%
- 2+ hours late26 flights7.5%
Scale runs 0% to 100%.
Share of 345 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 122 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 24 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 JFK.
The worst days
Worst days for B6 717
The latest arrival of the period was on 27 August 2026, 7 hours 16 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across August, May, January and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 August 2026 | 7 hours 16 minutes | National Airspace System |
| 15 May 2026 | 6 hours 9 minutes | Carrier |
| 26 January 2026 | 5 hours 36 minutes | Extreme weather |
| 20 May 2026 | 5 hours 15 minutes | National Airspace System |
| 27 February 2026 | 5 hours 13 minutes | Late-arriving aircraft |
Delay causes
Why B6 717 runs late
National Airspace System accounts for 49% of the 11,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 32%Late-arriving aircraft
- 16%Carrier
- 4%Extreme weather
- 0%Security
49% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 5,371 minutes out of 11,000, against a national NAS share of 21%. The split is drawn from 10,934 delay minutes reported on B6 717.
Cancellations run at 4.17%, against 1.89% nationally. That is about one flight in 25 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.
Every one of the 360 flights under B6 717 in the data flew BOS to JFK. 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. 360 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 717
For a booking, the cancellation rate is the figure to plan around on B6 717: 4.17% of its 360 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to JFK, every carrier and departure
- JFK to BOS, the return direction
- Republic Airways 5720 on the same route85.1%
- Delta Air Lines 2611 on the same route92.3%
- Republic Airways 5808 on the same route73.8%
- JetBlue Airways 1017 on the same route64.9%
- JetBlue Airways 517 on the same route66.0%
- Republic Airways 5814 on the same route63.2%
- Boston Logan International (BOS) delay statistics
- John F. Kennedy International (JFK) 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
- The best time of day to fly, according to 7.05 million flight records
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.