Flight number record
DL 405
Delta Air Lines · San Francisco to New York
- Route
- SFO → JFK
- Departs
- 07:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 405, check with Delta Air Lines.
DL 405 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 14 minutes early.
Set against the rest of the country, DL 405's record is 12 points better than the US average of 77.3%. That gap is worth roughly 115 fewer late arrivals for every thousand flights.
Key figures
On time
88.8%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
2.19%
National rate is 1.89%
1 hour+ late
5.1%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 14 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 405 flies
DL 405 flies SFO to JFK without a single fixed slot. Its most common scheduled departure was 07:00, used on 226 of 365 flights, with 07:05 (94 flights) next.
- Departs 07:00226 flights61.9%
- Departs 07:0594 flights25.8%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 405 runs level with that at 88.8%. 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 405 next to SFO to JFK
Every carrier on SFO to JFK combined arrived on time 78.0% of the time across 6,798 flights, so DL 405 is 11 points ahead of it. Delta flew 2,230 flights on the same city pair under all its flight numbers, including this one, and those ran 77.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 405 | 365 | 88.8% | 95 min | 2.19% | A |
| All Delta Air Lines on SFO–JFK | 2,230 | 77.2% | 71 min | 2.15% | B |
| All carriers on SFO–JFK | 6,798 | 78.0% | 80 min | 2.49% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 405 quarter by quarter
Quarter by quarter DL 405 held fairly steady: 89.1% in Oct–Dec 2025, 90.8% in Jan–Mar 2026, 85.6% in Apr–Jun 2026 and 87.9% in Jul–Sep 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202592 flights89.1%
- Jan–Mar 202690 flights90.8%
- Apr–Jun 202691 flights85.6%
- Jul–Sep 202662 flights87.9%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 405 ranged from 84.6% on Friday to 94.2% on Wednesday. With about 52 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 405 runs when it is late
DL 405 often beats the schedule: 177 of 356 completed flights, 50%, arrived 15 minutes or more early. The 40 late arrivals split 13 under half an hour, 9 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early177 flights49.7%
- Within 15 min139 flights39.0%
- 15–29 min late13 flights3.7%
- 30–59 min late9 flights2.5%
- 1–2 hours late8 flights2.2%
- 2+ hours late10 flights2.8%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
8 of 32 late departures made up the time and arrived on time, 25% of them. 16 flights left on time and still arrived late.
The worst days
Worst days for DL 405
The latest arrival of the period was on 31 October 2025, 7 hours 24 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 31 October 2025 | 7 hours 24 minutes | Late-arriving aircraft |
| 8 November 2025 | 6 hours 22 minutes | Late-arriving aircraft |
| 7 November 2025 | 4 hours 52 minutes | Carrier |
| 8 May 2026 | 4 hours 23 minutes | Carrier |
| 17 June 2026 | 3 hours 59 minutes | Carrier |
Delay causes
Why DL 405 runs late
Carrier accounts for 48% of the 3,815 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 26%National Airspace System
- 22%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,844 of the 3,815 delay minutes reported here. The split is drawn from 3,815 delay minutes reported on DL 405.
Cancellations sit at 2.19% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and routes
What a delay on this flight costs
5.1% 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 an hour and a half, which a normal layover absorbs.
At 2,586 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 365 flights under DL 405 in the data flew SFO to JFK. 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 405
For a booking, read DL 405 as 88.8% on time with 2.19% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SFO to JFK, every carrier and departure
- JFK to SFO, the return direction
- American Airlines 234 on the same route90.9%
- JetBlue Airways 416 on the same route76.7%
- Delta Air Lines 383 on the same route87.1%
- JetBlue Airways 816 on the same route77.0%
- Delta Air Lines 668 on the same route73.1%
- American Airlines 16 on the same route71.9%
- San Francisco International (SFO) delay statistics
- John F. Kennedy International (JFK) 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.