Flight number record
DL 560
Delta Air Lines · Seattle to Atlanta
- Route
- SEA → ATL
- Departs
- 16:05
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 560, check with Delta Air Lines.
DL 560 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 348 flights, with a median arrival 10 minutes early.
Set against the rest of the country, DL 560's record is 7 points better than the US average of 77.3%. That gap is worth roughly 73 fewer late arrivals for every thousand flights.
Key figures
On time
84.6%
Arrivals under 15 minutes late, of 344 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
0.57%
National rate is 1.89%
1 hour+ late
4.4%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. The median arrival is 10 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 560 flies
DL 560 flies SEA to ATL without a single fixed slot. Its most common scheduled departure was 16:05, used on 116 of 348 flights, with 15:59 (36 flights) next.
- Departs 16:05116 flights33.3%
- Departs 15:5936 flights10.3%
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 16:05 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 560 runs 13 points better at 84.6%. 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 560 next to SEA to ATL
Every carrier on SEA to ATL combined arrived on time 84.0% of the time across 3,294 flights, so DL 560 is about level with it. Delta flew 2,402 flights on the same city pair under all its flight numbers, including this one, and those ran 84.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 560thin sample | 348 | 84.6% | 75 min | 0.57% | B+ |
| All Delta Air Lines on SEA–ATL | 2,402 | 84.2% | 84 min | 0.75% | B+ |
| All carriers on SEA–ATL | 3,294 | 84.0% | 74 min | 0.70% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 560 quarter by quarter
DL 560 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Oct–Dec 2025 at 80.8%, a swing of 13 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 flights93.3%
- Oct–Dec 202579 flights80.8%
- Jan–Mar 202686 flights83.1%
- Apr–Jun 202691 flights84.6%
- Jul–Sep 202662 flights87.1%
Scale runs 70% to 100%.
By weekday, DL 560 ranged from 77.6% on Sunday to 88.0% on Tuesday. With about 50 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 560 runs when it is late
DL 560 often beats the schedule: 141 of 344 completed flights, 41%, arrived 15 minutes or more early. The 53 late arrivals split 21 under half an hour, 17 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early141 flights41.0%
- Within 15 min150 flights43.6%
- 15–29 min late21 flights6.1%
- 30–59 min late17 flights4.9%
- 1–2 hours late7 flights2.0%
- 2+ hours late8 flights2.3%
Scale runs 0% to 100%.
Share of 344 completed flights by arrival against schedule.
A late pushback is often recovered here: of 75 departures that left 15 minutes late or more, 32 still arrived on time. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 560
The latest arrival of the period was on 2 September 2025, 14 hours 7 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 September 2025 | 14 hours 7 minutes | Carrier |
| 8 November 2025 | 4 hours 35 minutes | National Airspace System |
| 18 August 2026 | 4 hours 27 minutes | Carrier |
| 6 March 2026 | 3 hours 30 minutes | National Airspace System |
| 8 December 2025 | 3 hours 28 minutes | Carrier |
Delay causes
Why DL 560 runs late
Carrier accounts for 57% of the 3,968 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Carrier
- 24%National Airspace System
- 15%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,266 of the 3,968 delay minutes reported here. The split is drawn from 3,968 delay minutes reported on DL 560.
Cancellations are rare at 0.57%, 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
Badly late arrivals are rare here: only 4.4% land an hour or more behind schedule, against 8.3% 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.
At 2,182 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 TPA to BOS (13), but none flew often enough under DL 560 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to ATL only.
One caution: this is a thin sample. 348 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 560
For a booking, read DL 560 as 84.6% on time with 0.57% cancelled over 348 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to ATL, every carrier and departure
- ATL to SEA, the return direction
- Delta Air Lines 562 on the same route82.4%
- Alaska Airlines 334 on the same route80.6%
- Delta Air Lines 569 on the same route94.8%
- Delta Air Lines 542 on the same route79.3%
- Delta Air Lines 652 on the same route89.0%
- Delta Air Lines 554 on the same route77.4%
- Seattle-Tacoma International (SEA) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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
- Worst months to fly in the US, ranked by the data
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.