Flight number record

DL 659

Delta Air Lines · Atlanta to Las Vegas

Route: ATL → LAS
Departs: 15:50
Flights: 337
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 659, check with Delta Air Lines.

DL 659 lands a B+, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 337 flights, with a median arrival 2 minutes early.

On time

77.3%

Arrivals under 15 minutes late, of 335 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.30%

National rate is 1.81%

1 hour+ late

8.7%

National rate is 8.1%

These figures cover 337 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 659 flies

DL 659 flies ATL to LAS without a single fixed slot. Its most common scheduled departure was 15:50, used on 76 of 337 flights, with 15:59 (48 flights) and 15:53 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:5076 flights22.6%
Departs 15:5948 flights14.2%
Departs 15:5335 flights10.4%

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 15:50 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 659 runs 5 points better at 77.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 659 next to ATL to LAS

Every carrier on ATL to LAS combined arrived on time 75.9% of the time across 4,796 flights, so DL 659 is about level with it. Delta flew 3,329 flights on the same city pair under all its flight numbers, including this one, and those ran 77.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 4 points.

DL 659 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 659thin sample	337	77.3%	62 min	0.30%	B+
All Delta Air Lines on ATL–LAS	3,329	77.3%	55 min	0.60%	B+
All carriers on ATL–LAS	4,796	75.9%	60 min	0.77%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 659 quarter by quarter

Quarter by quarter DL 659 held fairly steady: 72.8% in Jul–Sep 2025, 81.1% in Oct–Dec 2025, 73.8% in Jan–Mar 2026 and 82.2% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights72.8%
Oct–Dec 202592 flights81.1%
Jan–Mar 202680 flights73.8%
Apr–Jun 202673 flights82.2%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 659 did best on Friday at 84.6% on time and worst on Thursday at 67.3%. Each day rests on about 48 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 659 runs late

One category carries most of the weight here. Carrier accounts for 48% of the 4,681 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
48%
National Airspace System
29%
Late-arriving aircraft
21%
Extreme weather
2%

The largest share of delay minutes, 48%, 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 2,246 of the 4,681 delay minutes reported here. The split is drawn from 4,681 delay minutes reported on DL 659.

Cancellations are rare at 0.30%, 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

8.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 1,747 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 337 flights under DL 659 in the data flew ATL to LAS. 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. 337 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 659

For a booking, read DL 659 as 77.3% on time with 0.30% cancelled over 337 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures