Flight number record

DL 806

Delta Air Lines · New York to Las Vegas

Route: JFK → LAS
Departs: 16:45
Flights: 349
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 806, check with Delta Air Lines.

DL 806 lands a B, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 349 flights, with a median arrival 9 minutes early.

On time

78.2%

Arrivals under 15 minutes late, of 340 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

2.58%

National rate is 1.89%

1 hour+ late

8.5%

National rate is 8.3%

These figures cover 349 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When DL 806 flies

DL 806 flies JFK to LAS without a single fixed slot. Its most common scheduled departure was 16:45, used on 70 of 349 flights, with 16:59 (66 flights) and 16:10 (62 flights) next.

Departs 16:4570 flights20.1%
Departs 16:5966 flights18.9%
Departs 16:1062 flights17.8%

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 16:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 806 runs 6 points better at 78.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

DL 806 next to JFK to LAS

Every carrier on JFK to LAS combined arrived on time 78.1% of the time across 3,721 flights, so DL 806 is about level with it. Delta flew 1,676 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 3 points.

DL 806 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 806thin sample	349	78.2%	65 min	2.58%	B
All Delta Air Lines on JFK–LAS	1,676	76.4%	57 min	2.74%	B
All carriers on JFK–LAS	3,721	78.1%	66 min	2.82%	B
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 806 quarter by quarter

DL 806 did not run the same all year. Its best quarter was Apr–Jun 2026 at 83.1% on time and its weakest Jul–Sep 2026 at 70.7%, a swing of 12 points on roughly 70 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 202580 flights76.2%
Jan–Mar 202686 flights81.9%
Apr–Jun 202691 flights83.1%
Jul–Sep 202662 flights70.7%

Scale runs 60% to 90%.

By weekday, DL 806 ranged from 75.5% on Thursday to 81.6% on Tuesday. With about 50 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late DL 806 runs when it is late

DL 806 often beats the schedule: 132 of 340 completed flights, 39%, arrived 15 minutes or more early. The 74 late arrivals split 26 under half an hour, 19 between 30 and 60 minutes, and 29 an hour or more.

15+ min early132 flights38.8%
Within 15 min134 flights39.4%
15–29 min late26 flights7.6%
30–59 min late19 flights5.6%
1–2 hours late21 flights6.2%
2+ hours late8 flights2.4%

Scale runs 0% to 100%.

Share of 340 completed flights by arrival against schedule.

13 of 62 late departures made up the time and arrived on time, 21% of them. In the other direction, 25 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 LAS.

The worst days

Worst days for DL 806

The latest arrival of the period was on 30 October 2025, 5 hours 51 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across October, December, August, November and June, with no single month standing out.

The latest arrivals of DL 806 in the period
Date	Arrived late by	Largest filed cause
30 October 2025	5 hours 51 minutes	Late-arriving aircraft
14 December 2025	5 hours 2 minutes	Late-arriving aircraft
7 August 2026	3 hours 30 minutes	Carrier
8 November 2025	2 hours 49 minutes	National Airspace System
7 June 2026	2 hours 46 minutes	Carrier

Delay causes

Why DL 806 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 4,820 reported delay minutes.

National Airspace System
36%
Carrier
31%
Late-arriving aircraft
30%
Extreme weather
3%

36% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,747 minutes out of 4,820, against a national NAS share of 21%. The split is drawn from 4,820 delay minutes reported on DL 806.

Cancellations run at 2.58%, against 1.89% nationally. That is about one flight in 40 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

8.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 2,248 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.

The same number turns up on one other city pair in the data, including ATL to DAY (16), but none flew often enough under DL 806 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to LAS 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 806

For a booking, the cancellation rate is the figure to plan around on DL 806: 2.58% 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures