Flight number record

B6 845

JetBlue Airways · Boston to Syracuse

Route: BOS → SYR
Departs: 17:14
Flights: 358
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 845, check with JetBlue Airways.

B6 845 draws a D. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 358 flights, with a median arrival 6 minutes late.

The national on-time rate over the same period is 77.6%, so B6 845 runs 19 points behind the country as a whole. Across a thousand flights that is about 193 extra late arrivals.

On time

58.3%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

2.23%

National rate is 1.81%

1 hour+ late

18.3%

National rate is 8.1%

These figures cover 358 flights between July 2025 and June 2026. Beyond the headline rate, 18.3% 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 845 flies

B6 845 flies BOS to SYR without a single fixed slot. Its most common scheduled departure was 17:14, used on 63 of 358 flights, with 21:40 (58 flights) and 18:40 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:1463 flights17.6%
Departs 21:4058 flights16.2%
Departs 18:4038 flights10.6%

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 17:14 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and B6 845 runs 10 points worse at 58.3%. 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 845 next to BOS to SYR

Every carrier on BOS to SYR combined arrived on time 65.4% of the time across 443 flights, so B6 845 is 7 points behind it. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 14 points.

B6 845 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 845thin sample	358	58.3%	67 min	2.23%	D
All JetBlue Airways on BOS–SYRthin sample	358	58.3%	67 min	2.23%	D
All carriers on BOS–SYR	443	65.4%	66 min	1.81%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 845 quarter by quarter

B6 845 did not run the same all year. Its best quarter was Oct–Dec 2025 at 67.0% on time and its weakest Jan–Mar 2026 at 54.1%, a swing of 13 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 202586 flights54.7%
Oct–Dec 202591 flights67.0%
Jan–Mar 202690 flights54.1%
Apr–Jun 202691 flights57.1%

Scale runs 45% to 70%. Rows with fewer than 30 flights show a dash.

By weekday, B6 845 did best on Wednesday at 74.0% on time and worst on Sunday at 42.9%. Each day rests on about 51 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 845 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 9,790 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
64%
Carrier
29%
National Airspace System
6%
Extreme weather
1%

64% 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 9,790 reported delay minutes here, that single category outweighs weather by 52 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 9,790 delay minutes reported on B6 845.

Cancellations sit at 2.23% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 18.3% 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 358 flights under B6 845 in the data flew BOS to SYR. 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. 358 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 845

For a booking, B6 845 is a flight to put a long connection behind. 18.3% 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.

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