Flight number record

B6 715

JetBlue Airways · Boston to Buffalo

Route: BOS → BUF
Departs: 19:39
Flights: 299
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 715, check with JetBlue Airways.

B6 715 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 299 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.6%, so B6 715 runs 10 points behind the country as a whole. Across a thousand flights that is about 104 extra late arrivals.

On time

67.2%

Arrivals under 15 minutes late, of 290 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

3.01%

National rate is 1.81%

1 hour+ late

14.1%

National rate is 8.1%

These figures cover 299 flights between July 2025 and June 2026. Beyond the headline rate, 14.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When B6 715 flies

B6 715 flies BOS to BUF without a single fixed slot. Its most common scheduled departure was 19:39, used on 58 of 299 flights, with 12:50 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:3958 flights19.4%
Departs 12:5032 flights10.7%

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 19:39 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and B6 715 runs level with that at 67.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

B6 715 next to BOS to BUF

Every carrier on BOS to BUF combined arrived on time 75.6% of the time across 1,235 flights, so B6 715 is 8 points behind it. JetBlue flew 947 flights on the same city pair under all its flight numbers, including this one, and those ran 73.1% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 6 points.

B6 715 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 715thin sample	299	67.2%	69 min	3.01%	C−
All JetBlue Airways on BOS–BUF	947	73.1%	74 min	2.53%	C
All carriers on BOS–BUF	1,235	75.6%	71 min	2.19%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 715 quarter by quarter

Quarter by quarter B6 715 held fairly steady: 67.8% in Jul–Sep 2025, 65.4% in Oct–Dec 2025, 67.2% in Jan–Mar 2026 and 69.1% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202588 flights67.8%
Oct–Dec 202583 flights65.4%
Jan–Mar 202670 flights67.2%
Apr–Jun 202658 flights69.1%

Scale runs 55% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, B6 715 did best on Saturday at 83.3% on time and worst on Thursday at 52.3%. Each day rests on about 43 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 715 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 66% of the 6,546 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
66%
Carrier
20%
National Airspace System
13%
Extreme weather
1%

66% 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 6,546 reported delay minutes here, that single category outweighs weather by 66 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 6,546 delay minutes reported on B6 715.

Cancellations run at 3.01%, against 1.81% nationally. That is roughly one flight in 30 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

Every one of the 299 flights under B6 715 in the data flew BOS to BUF. 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. 299 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 715

For a booking, the cancellation rate is the figure to plan around on B6 715: 3.01% of its 299 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.

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