Flight number record
DL 659
Delta Air Lines · Atlanta to Las Vegas
- Route
- ATL → LAS
- Departs
- 15:50
- Flights
- 333
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 333 flights, with a median arrival 3 minutes early.
Key figures
On time
77.6%
Arrivals under 15 minutes late, of 330 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
0.60%
National rate is 1.89%
1 hour+ late
8.2%
National rate is 8.3%
These figures cover 333 flights between September 2025 and August 2026. Beyond the headline rate, 8.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 71 of 333 flights, with 07:25 (48 flights) next.
- Departs 15:5071 flights21.3%
- Departs 07:2548 flights14.4%
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 15:50 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 659 runs 6 points better at 77.6%. 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 659 next to ATL to LAS
Every carrier on ATL to LAS combined arrived on time 74.8% of the time across 4,758 flights, so DL 659 is 3 points ahead of it. Delta flew 3,324 flights on the same city pair under all its flight numbers, including this one, and those ran 76.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 659thin sample | 333 | 77.6% | 59 min | 0.60% | B+ |
| All Delta Air Lines on ATL–LAS | 3,324 | 76.5% | 57 min | 0.66% | B+ |
| All carriers on ATL–LAS | 4,758 | 74.8% | 63 min | 0.78% | C+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 659 quarter by quarter
DL 659 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jul–Sep 2026 at 68.4%, a swing of 15 points on roughly 67 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 flights83.3%
- Oct–Dec 202592 flights81.1%
- Jan–Mar 202680 flights73.8%
- Apr–Jun 202673 flights82.2%
- Jul–Sep 202658 flights68.4%
Scale runs 60% to 90%.
By weekday, DL 659 did best on Friday at 84.3% on time and worst on Thursday at 70.6%. Each day rests on about 48 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 659 runs when it is late
The 74 late arrivals split 26 under half an hour, 21 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early72 flights21.8%
- Within 15 min184 flights55.8%
- 15–29 min late26 flights7.9%
- 30–59 min late21 flights6.4%
- 1–2 hours late20 flights6.1%
- 2+ hours late7 flights2.1%
Scale runs 0% to 100%.
Share of 330 completed flights by arrival against schedule.
14 of 75 late departures made up the time and arrived on time, 19% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 659
The latest arrival of the period was on 26 April 2026, 3 hours 51 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 April 2026 | 3 hours 51 minutes | Carrier |
| 6 August 2026 | 3 hours 27 minutes | Carrier |
| 7 March 2026 | 2 hours 36 minutes | Carrier |
| 10 October 2025 | 2 hours 32 minutes | Carrier |
| 27 December 2025 | 2 hours 27 minutes | Carrier |
Delay causes
Why DL 659 runs late
Carrier accounts for 44% of the 4,326 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Carrier
- 32%National Airspace System
- 23%Late-arriving aircraft
- 1%Extreme weather
The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,899 of the 4,326 delay minutes reported here. The split is drawn from 4,326 delay minutes reported on DL 659.
Cancellations are rare at 0.60%, below the national 1.89% 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
8.2% 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 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 333 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. 333 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 77.6% on time with 0.60% cancelled over 333 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to LAS, every carrier and departure
- LAS to ATL, the return direction
- Delta Air Lines 711 on the same route77.4%
- Delta Air Lines 549 on the same route76.9%
- Delta Air Lines 777 on the same route85.5%
- Delta Air Lines 466 on the same route79.3%
- Frontier Airlines 3923 on the same route57.0%
- Delta Air Lines 919 on the same route74.7%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Harry Reid International (LAS) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
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 ; recomputed monthly. How this data is collected.