Flight number record

DL 553

Delta Air Lines · Las Vegas to Los Angeles

Route: LAS → LAX
Departs: 06:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 553, check with Delta Air Lines.

DL 553 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 13 minutes early.

Set against the rest of the country, DL 553's record is 16 points better than the US average of 77.6%. That gap is worth roughly 161 fewer late arrivals for every thousand flights.

On time

93.7%

Arrivals under 15 minutes late, of 363 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

1.7%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 13 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 553 flies

DL 553 flies LAS to LAX without a single fixed slot. Its most common scheduled departure was 06:00, used on 89 of 365 flights, with 06:15 (87 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:0089 flights24.4%
Departs 06:1587 flights23.8%

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 553 runs 4 points better at 93.7%. 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 553 next to LAS to LAX

Every carrier on LAS to LAX combined arrived on time 78.8% of the time across 8,325 flights, so DL 553 is 15 points ahead of it. Delta flew 1,737 flights on the same city pair under all its flight numbers, including this one, and those ran 84.0% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 12 points.

DL 553 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 553	365	93.7%	64 min	0.55%	A+
All Delta Air Lines on LAS–LAX	1,737	84.0%	72 min	0.92%	B+
All carriers on LAS–LAX	8,325	78.8%	60 min	0.70%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 553 quarter by quarter

Quarter by quarter DL 553 held fairly steady: 93.5% in Jul–Sep 2025, 95.7% in Oct–Dec 2025, 92.1% in Jan–Mar 2026 and 93.3% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights93.5%
Oct–Dec 202592 flights95.7%
Jan–Mar 202690 flights92.1%
Apr–Jun 202691 flights93.3%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 553 ranged from 90.4% on Sunday to 96.2% on Tuesday. With about 52 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.

Delay causes

Why DL 553 runs late

One category carries most of the weight here. Carrier accounts for 88% of the 1,481 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
88%
National Airspace System
12%

The largest share of delay minutes, 88%, 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 1,296 of the 1,481 delay minutes reported here. The split is drawn from 1,481 delay minutes reported on DL 553.

Cancellations are rare at 0.55%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.7% 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.

Every one of the 365 flights under DL 553 in the data flew LAS to LAX. 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. 365 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 553

For a booking, DL 553 has one of the better records a US domestic flight can show: 93.7% on time and 0.55% cancelled. That is a base rate, not a promise about any single 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures