Flight number record
DL 683
Delta Air Lines · New York to San Diego
- Route
- JFK → SAN
- Departs
- 08:45
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 683, check with Delta Air Lines.
DL 683 lands a B−, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That rests on 255 flights, with a median arrival 7 minutes early.
Key figures
On time
78.3%
Arrivals under 15 minutes late, of 244 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
3.53%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 7 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 683 flies
DL 683 flies JFK to SAN without a single fixed slot. Its most common scheduled departure was 08:45, used on 75 of 255 flights, with 08:40 (59 flights) and 08:30 (57 flights) next.
- Departs 08:4575 flights29.4%
- Departs 08:4059 flights23.1%
- Departs 08:3057 flights22.4%
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 08:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 683 runs 6 points worse at 78.3%. 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 683 next to JFK to SAN
Every carrier on JFK to SAN combined arrived on time 78.0% of the time across 2,417 flights, so DL 683 is about level with it. Delta flew 1,046 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 683thin sample | 255 | 78.3% | 50 min | 3.53% | B− |
| All Delta Air Lines on JFK–SAN | 1,046 | 75.5% | 54 min | 3.15% | B− |
| All carriers on JFK–SAN | 2,417 | 78.0% | 60 min | 2.85% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 683 quarter by quarter
DL 683 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.4% on time and its weakest Jul–Sep 2026 at 73.8%, a swing of 11 points on roughly 85 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.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights75.9%
- Apr–Jun 202691 flights84.4%
- Jul–Sep 202662 flights73.8%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 683 did best on Tuesday at 88.2% on time and worst on Saturday at 61.1%. Each day rests on about 36 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 683 runs when it is late
DL 683 often beats the schedule: 90 of 244 completed flights, 37%, arrived 15 minutes or more early. Most of the lateness is short. 27 of the 53 late arrivals were under half an hour behind, and 12 reached an hour or more.
- 15+ min early90 flights36.9%
- Within 15 min101 flights41.4%
- 15–29 min late27 flights11.1%
- 30–59 min late14 flights5.7%
- 1–2 hours late6 flights2.5%
- 2+ hours late6 flights2.5%
Scale runs 0% to 100%.
Share of 244 completed flights by arrival against schedule.
3 of 23 late departures made up the time and arrived on time, 13% of them. In the other direction, 33 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SAN.
The worst days
Worst days for DL 683
The latest arrival of the period was on 6 June 2026, 4 hours 18 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 |
|---|---|---|
| 6 June 2026 | 4 hours 18 minutes | Carrier |
| 9 January 2026 | 3 hours 30 minutes | Carrier |
| 27 June 2026 | 2 hours 54 minutes | Carrier |
| 10 August 2026 | 2 hours 11 minutes | Carrier |
| 9 April 2026 | 2 hours 8 minutes | Carrier |
Delay causes
Why DL 683 runs late
Carrier accounts for 43% of the 2,622 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 43%National Airspace System
- 9%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,135 of the 2,622 delay minutes reported here. The split is drawn from 2,622 delay minutes reported on DL 683.
Cancellations run at 3.53%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.9% 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 2,446 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 three other city pairs in the data, including SAN to JFK (186), ATL to GEG (31) and GEG to ATL (31), but none flew often enough under DL 683 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to SAN only.
One caution: this is a thin sample. 255 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 683
For a booking, the cancellation rate is the figure to plan around on DL 683: 3.53% of its 255 scheduled flights did not operate. A late arrival costs about 50 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- JFK to SAN, every carrier and departure
- SAN to JFK, the return direction
- JetBlue Airways 1189 on the same route80.1%
- Alaska Airlines 25 on the same route77.1%
- Delta Air Lines 685 on the same route71.9%
- Alaska Airlines 35 on the same route74.6%
- Delta Air Lines 709 on the same route74.5%
- John F. Kennedy International (JFK) delay statistics
- San Diego International (SAN) 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
- What a cancellation rate actually tells you (and what it hides)
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.