Flight number record

DL 333

Delta Air Lines · Las Vegas to New York

Route: LAS → JFK
Departs: 09:30
Flights: 363
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 333, check with Delta Air Lines.

DL 333 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 363 flights, with a median arrival 14 minutes early.

Set against the rest of the country, DL 333's record is 7 points better than the US average of 77.3%. That gap is worth roughly 71 fewer late arrivals for every thousand flights.

On time

84.4%

Arrivals under 15 minutes late, of 347 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

2.48%

National rate is 1.89%

1 hour+ late

5.2%

National rate is 8.3%

These figures cover 363 flights between September 2025 and August 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.

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Schedule

When DL 333 flies

DL 333 flies LAS to JFK without a single fixed slot. Its most common scheduled departure was 09:30, used on 60 of 363 flights, with 09:46 (38 flights) next.

Departs 09:3060 flights16.5%
Departs 09:4638 flights10.5%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 333 runs level with that at 84.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

DL 333 next to LAS to JFK

Every carrier on LAS to JFK combined arrived on time 80.0% of the time across 3,717 flights, so DL 333 is 4 points ahead of it. Delta flew 1,676 flights on the same city pair under all its flight numbers, including this one, and those ran 82.9% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.

DL 333 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 333thin sample	363	84.4%	71 min	2.48%	B
All Delta Air Lines on LAS–JFK	1,676	82.9%	73 min	2.80%	B
All carriers on LAS–JFK	3,717	80.0%	85 min	2.96%	B
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 333 quarter by quarter

Quarter by quarter DL 333 held fairly steady: 80.0% in Jul–Sep 2025, 87.4% in Oct–Dec 2025, 85.1% in Jan–Mar 2026, 84.4% in Apr–Jun 2026 and 81.1% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202530 flights80.0%
Oct–Dec 202590 flights87.4%
Jan–Mar 202690 flights85.1%
Apr–Jun 202691 flights84.4%
Jul–Sep 202662 flights81.1%

Scale runs 70% to 95%.

By weekday, DL 333 did best on Thursday at 91.7% on time and worst on Monday at 58.8%. Each day rests on about 52 flights, so a gap of 33 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 333 runs when it is late

DL 333 often beats the schedule: 170 of 347 completed flights, 49%, arrived 15 minutes or more early. The 54 late arrivals split 21 under half an hour, 15 between 30 and 60 minutes, and 18 an hour or more.

15+ min early170 flights49.0%
Within 15 min123 flights35.4%
15–29 min late21 flights6.1%
30–59 min late15 flights4.3%
1–2 hours late11 flights3.2%
2+ hours late7 flights2.0%

Scale runs 0% to 100%.

Share of 347 completed flights by arrival against schedule.

A late pushback is often recovered here: of 72 departures that left 15 minutes late or more, 32 still arrived on time. 14 flights left on time and still arrived late.

The worst days

Worst days for DL 333

The latest arrival of the period was on 24 August 2026, 11 hours 14 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On four of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of DL 333 in the period
Date	Arrived late by	Largest filed cause
24 August 2026	11 hours 14 minutes	Carrier
30 October 2025	6 hours 18 minutes	Late-arriving aircraft
16 March 2026	3 hours 32 minutes	Late-arriving aircraft
5 January 2026	2 hours 51 minutes	Late-arriving aircraft
3 November 2025	2 hours 47 minutes	Late-arriving aircraft

Delay causes

Why DL 333 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 3,825 reported delay minutes.

Late-arriving aircraft
41%
Carrier
33%
National Airspace System
23%
Extreme weather
3%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,825 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 3,825 delay minutes reported on DL 333.

Cancellations sit at 2.48% against a national 1.89%, which is ordinary. Diversions add another 1.93%.

Connections and routes

What a delay on this flight costs

5.2% 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 a little over 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.

Every one of the 363 flights under DL 333 in the data flew LAS to JFK. 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. 363 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 333

For a booking, read DL 333 as 84.4% on time with 2.48% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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