Flight number record
B6 1901
JetBlue Airways · Buffalo to New York
- Route
- BUF → JFK
- Departs
- 09:38
- Flights
- 254
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 1901, check with JetBlue Airways.
B6 1901 lands a B−, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 254 flights, with a median arrival 8 minutes early.
Key figures
On time
76.6%
Arrivals under 15 minutes late, of 239 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
5.51%
National rate is 1.89%
1 hour+ late
8.8%
National rate is 8.3%
These figures cover 254 flights between September 2025 and August 2026. Beyond the headline rate, 8.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When B6 1901 flies
B6 1901 flies BUF to JFK without a single fixed slot. Its most common scheduled departure was 09:38, used on 52 of 254 flights, with 09:15 (44 flights) next.
- Departs 09:3852 flights20.5%
- Departs 09:1544 flights17.3%
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 09:38 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and B6 1901 runs 7 points worse at 76.6%. 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 1901 next to BUF to JFK
Every carrier on BUF to JFK combined arrived on time 75.2% of the time across 1,225 flights, so B6 1901 is about level with it. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 1901thin sample | 254 | 76.6% | 84 min | 5.51% | B− |
| All JetBlue Airways on BUF–JFK | 1,225 | 75.2% | 90 min | 6.61% | B− |
| All carriers on BUF–JFK | 1,225 | 75.2% | 90 min | 6.61% | B− |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 1901 quarter by quarter
B6 1901 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.4% on time and its weakest Jul–Sep 2026 at 66.1%, a swing of 19 points on roughly 85 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 flights—
- Oct–Dec 202588 flights72.3%
- Jan–Mar 202633 flights—
- Apr–Jun 202641 flights85.4%
- Jul–Sep 202662 flights66.1%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, B6 1901 did best on Wednesday at 84.4% on time and worst on Saturday at 63.6%. Each day rests on about 36 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 1901 runs when it is late
B6 1901 often beats the schedule: 74 of 239 completed flights, 31%, arrived 15 minutes or more early. The 56 late arrivals split 20 under half an hour, 15 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early74 flights31.0%
- Within 15 min109 flights45.6%
- 15–29 min late20 flights8.4%
- 30–59 min late15 flights6.3%
- 1–2 hours late11 flights4.6%
- 2+ hours late10 flights4.2%
Scale runs 0% to 100%.
Share of 239 completed flights by arrival against schedule.
6 of 50 late departures made up the time and arrived on time, 12% of them. In the other direction, 12 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 1901
The latest arrival of the period was on 24 August 2026, 9 hours 25 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 August 2026 | 9 hours 25 minutes | Late-arriving aircraft |
| 25 July 2026 | 6 hours | Carrier |
| 29 July 2026 | 5 hours 21 minutes | Late-arriving aircraft |
| 13 December 2025 | 4 hours 46 minutes | Late-arriving aircraft |
| 29 August 2026 | 4 hours 7 minutes | Late-arriving aircraft |
Delay causes
Why B6 1901 runs late
Late-arriving aircraft accounts for 56% of the 4,680 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Late-arriving aircraft
- 33%Carrier
- 11%National Airspace System
56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,680 reported delay minutes here, that single category outweighs weather by 56 to one. The split is drawn from 4,680 delay minutes reported on B6 1901.
Cancellations run at 5.51%, against 1.89% nationally. That is roughly one flight in twenty 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
8.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
Every one of the 254 flights under B6 1901 in the data flew BUF 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. 254 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 1901
For a booking, the cancellation rate is the figure to plan around on B6 1901: 5.51% of its 254 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
- BUF to JFK, every carrier and departure
- JFK to BUF, the return direction
- JetBlue Airways 2001 on the same route83.8%
- 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
- 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.