Flight number record

B6 71

JetBlue Airways · New York to Salt Lake City

Route: JFK → SLC
Departs: 18:30
Flights: 327
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s B6 71, check with JetBlue Airways.

B6 71 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 327 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.3%, so B6 71 runs 8 points behind the country as a whole. Across a thousand flights that is about 77 extra late arrivals.

On time

69.6%

Arrivals under 15 minutes late, of 313 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

4.28%

National rate is 1.89%

1 hour+ late

10.9%

National rate is 8.3%

These figures cover 327 flights between September 2025 and August 2026. Beyond the headline rate, 10.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When B6 71 flies

B6 71 flies JFK to SLC without a single fixed slot. Its most common scheduled departure was 18:30, used on 48 of 327 flights, with 19:30 (48 flights) and 18:17 (38 flights) next.

Departs 18:3048 flights14.7%
Departs 19:3048 flights14.7%
Departs 18:1738 flights11.6%

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 18:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and B6 71 runs level with that at 69.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

B6 71 next to JFK to SLC

Every carrier on JFK to SLC combined arrived on time 76.4% of the time across 1,929 flights, so B6 71 is 7 points behind it. Across its whole network JetBlue Airways managed 71.3%, which this flight trails by 2 points.

B6 71 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 71thin sample	327	69.6%	63 min	4.28%	C−
All JetBlue Airways on JFK–SLC	393	67.6%	64 min	4.33%	C−
All carriers on JFK–SLC	1,929	76.4%	65 min	2.44%	B
JetBlue Airways, whole network	240,615	71.3%	77 min	3.56%	C−

Across the year

B6 71 quarter by quarter

B6 71 did not run the same all year. Its best quarter was Jan–Mar 2026 at 74.2% on time and its weakest Jul–Sep 2026 at 56.6%, a swing of 18 points on roughly 65 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 flights73.3%
Oct–Dec 202578 flights70.1%
Jan–Mar 202666 flights74.2%
Apr–Jun 202691 flights72.5%
Jul–Sep 202662 flights56.6%

Scale runs 50% to 80%.

By weekday, B6 71 ranged from 64.4% on Thursday to 73.8% on Monday. With about 47 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late B6 71 runs when it is late

B6 71 often beats the schedule: 114 of 313 completed flights, 36%, arrived 15 minutes or more early. The 95 late arrivals split 29 under half an hour, 32 between 30 and 60 minutes, and 34 an hour or more.

15+ min early114 flights36.4%
Within 15 min104 flights33.2%
15–29 min late29 flights9.3%
30–59 min late32 flights10.2%
1–2 hours late19 flights6.1%
2+ hours late15 flights4.8%

Scale runs 0% to 100%.

Share of 313 completed flights by arrival against schedule.

16 of 80 late departures made up the time and arrived on time, 20% of them. In the other direction, 31 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 SLC.

The worst days

Worst days for B6 71

The latest arrival of the period was on 20 May 2026, 5 hours 36 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across May, July, February, April and June, with no single month standing out.

The latest arrivals of B6 71 in the period
Date	Arrived late by	Largest filed cause
20 May 2026	5 hours 36 minutes	Extreme weather
19 July 2026	3 hours 29 minutes	Carrier
24 February 2026	2 hours 52 minutes	Late-arriving aircraft
23 April 2026	2 hours 48 minutes	Late-arriving aircraft
6 June 2026	2 hours 43 minutes	Extreme weather

Delay causes

Why B6 71 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,939 reported delay minutes.

National Airspace System
30%
Late-arriving aircraft
26%
Carrier
26%
Extreme weather
17%

Extreme weather accounts for 17% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.9 times the usual weather exposure. The split is drawn from 5,939 delay minutes reported on B6 71.

Cancellations run at 4.28%, 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

10.9% 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.

At 1,990 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

Every one of the 327 flights under B6 71 in the data flew JFK to SLC. 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. 327 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 71

For a booking, the cancellation rate is the figure to plan around on B6 71: 4.28% of its 327 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures