Flight number record

B6 1901

JetBlue Airways · Buffalo to New York

Route: BUF → JFK
Departs: 09:45
Flights: 254
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 1901, check with JetBlue Airways.

B6 1901 lands a B−, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 254 flights, with a median arrival 9 minutes early.

On time

80.6%

Arrivals under 15 minutes late, of 242 completed flights

Avg delay

60 min

Across delayed arrivals only, not all flights

Cancelled

4.33%

National rate is 1.81%

1 hour+ late

4.5%

National rate is 8.1%

These figures cover 254 flights between July 2025 and June 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When B6 1901 flies

B6 1901 flies BUF to JFK without a single fixed slot. Its most common scheduled departure was 09:45, used on 71 of 254 flights, with 09:38 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:4571 flights28.0%
Departs 09:3852 flights20.5%

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 09:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and B6 1901 runs 4 points worse at 80.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

B6 1901 next to BUF to JFK

Every carrier on BUF to JFK combined arrived on time 79.4% of the time across 1,217 flights, so B6 1901 is about level with it. Across its whole network JetBlue Airways managed 72.7%, which this flight beats by 8 points.

B6 1901 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 1901thin sample	254	80.6%	60 min	4.33%	B−
All JetBlue Airways on BUF–JFK	1,217	79.4%	87 min	4.93%	B−
All carriers on BUF–JFK	1,217	79.4%	87 min	4.93%	B−
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 1901 quarter by quarter

B6 1901 did not run the same all year. Its best quarter was Jul–Sep 2025 at 85.7% on time and its weakest Oct–Dec 2025 at 72.3%, a swing of 13 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 202592 flights85.7%
Oct–Dec 202588 flights72.3%
Jan–Mar 202633 flights—
Apr–Jun 202641 flights85.4%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, B6 1901 did best on Wednesday at 93.8% on time and worst on Sunday at 75.0%. Each day rests on about 36 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 1901 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 2,819 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
55%
Carrier
29%
National Airspace System
16%

55% 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 2,819 reported delay minutes here, that single category outweighs weather by 55 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 2,819 delay minutes reported on B6 1901.

Cancellations run at 4.33%, against 1.81% 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

Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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: 4.33% of its 254 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

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