Flight number record

DL 2611

Delta Air Lines · Boston to New York

Route: BOS → JFK
Departs: 06:00
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2611, check with Delta Air Lines.

DL 2611 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 349 flights, with a median arrival 14 minutes early.

Set against the rest of the country, DL 2611's record is 14 points better than the US average of 77.6%. That gap is worth roughly 138 fewer late arrivals for every thousand flights.

On time

91.4%

Arrivals under 15 minutes late, of 339 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

2.87%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. The median arrival is 14 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 DL 2611 flies

DL 2611 flies BOS to JFK without a single fixed slot. Its most common scheduled departure was 06:00, used on 187 of 349 flights, with 06:05 (138 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00187 flights53.6%
Departs 06:05138 flights39.5%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2611 runs 2 points better at 91.4%. 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

DL 2611 next to BOS to JFK

Every carrier on BOS to JFK combined arrived on time 75.5% of the time across 5,738 flights, so DL 2611 is 16 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 2611 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2611thin sample	349	91.4%	68 min	2.87%	A
All Delta Air Lines on BOS–JFK	368	90.8%	63 min	2.99%	A
All carriers on BOS–JFK	5,738	75.5%	73 min	4.55%	B−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2611 quarter by quarter

DL 2611 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.8% on time and its weakest Oct–Dec 2025 at 86.1%, a swing of 12 points on roughly 87 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 flights89.9%
Oct–Dec 202580 flights86.1%
Jan–Mar 202686 flights91.5%
Apr–Jun 202691 flights97.8%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2611 ranged from 87.2% on Monday to 95.9% on Thursday. With about 50 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.

Delay causes

Why DL 2611 runs late

One category carries most of the weight here. Carrier accounts for 59% of the 1,961 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.

Carrier
59%
Late-arriving aircraft
28%
National Airspace System
12%
Extreme weather
1%

The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,151 of the 1,961 delay minutes reported here. The split is drawn from 1,961 delay minutes reported on DL 2611.

Cancellations run at 2.87%, 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

Badly late arrivals are rare here: only 2.9% 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.

The same number turns up on one other city pair in the data, including BNA to MSP (16), but none flew often enough under DL 2611 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to JFK only.

One caution: this is a thin sample. 349 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 DL 2611

For a booking, the cancellation rate is the figure to plan around on DL 2611: 2.87% of its 349 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 Delta Air Lines’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