Flight number record
DL 773
Delta Air Lines · New York to Los Angeles
- Route
- JFK → LAX
- Departs
- 09:00
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 773, check with Delta Air Lines.
DL 773 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 an hour on average. That rests on 363 flights, with a median arrival 4 minutes early.
Key figures
On time
78.6%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
0.83%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 4 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 773 flies
DL 773 flies JFK to LAX without a single fixed slot. Its most common scheduled departure was 09:00, used on 117 of 363 flights, with 09:40 (81 flights) and 09:55 (54 flights) next.
- Departs 09:00117 flights32.2%
- Departs 09:4081 flights22.3%
- Departs 09:5554 flights14.9%
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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 773 runs 5 points worse at 78.6%. 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 773 next to JFK to LAX
Every carrier on JFK to LAX combined arrived on time 75.4% of the time across 10,285 flights, so DL 773 is 3 points ahead of it. Delta flew 3,366 flights on the same city pair under all its flight numbers, including this one, and those ran 75.3% 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 773thin sample | 363 | 78.6% | 56 min | 0.83% | B+ |
| All Delta Air Lines on JFK–LAX | 3,366 | 75.3% | 67 min | 2.55% | B |
| All carriers on JFK–LAX | 10,285 | 75.4% | 78 min | 2.78% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 773 quarter by quarter
DL 773 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 69.4%, a swing of 21 points on roughly 73 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 flights90.0%
- Oct–Dec 202590 flights77.8%
- Jan–Mar 202690 flights83.9%
- Apr–Jun 202691 flights76.9%
- Jul–Sep 202662 flights69.4%
Scale runs 60% to 95%.
By weekday, DL 773 did best on Tuesday at 86.3% on time and worst on Sunday at 67.3%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 773 runs when it is late
DL 773 often beats the schedule: 112 of 360 completed flights, 31%, arrived 15 minutes or more early. Most of the lateness is short. 39 of the 77 late arrivals were under half an hour behind, and 21 reached an hour or more.
- 15+ min early112 flights31.1%
- Within 15 min171 flights47.5%
- 15–29 min late39 flights10.8%
- 30–59 min late17 flights4.7%
- 1–2 hours late14 flights3.9%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
12 of 45 late departures made up the time and arrived on time, 27% of them. In the other direction, 44 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 LAX.
The worst days
Worst days for DL 773
The latest arrival of the period was on 26 June 2026, 8 hours 17 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 June 2026 | 8 hours 17 minutes | Carrier |
| 9 May 2026 | 4 hours 55 minutes | Carrier |
| 16 August 2026 | 4 hours 21 minutes | Carrier |
| 21 December 2025 | 4 hours | Carrier |
| 27 December 2025 | 2 hours 15 minutes | Extreme weather |
Delay causes
Why DL 773 runs late
Carrier accounts for 47% of the 4,312 delay minutes carriers reported here, and the remaining four split what is left.
- 47%Carrier
- 39%National Airspace System
- 9%Extreme weather
- 5%Late-arriving aircraft
The largest share of delay minutes, 47%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,029 of the 4,312 delay minutes reported here. The split is drawn from 4,312 delay minutes reported on DL 773.
Cancellations are rare at 0.83%, 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
5.8% 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 2,475 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 363 flights under DL 773 in the data flew JFK to LAX. 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. 363 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 773
For a booking, read DL 773 as 78.6% on time with 0.83% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- JFK to LAX, every carrier and departure
- LAX to JFK, the return direction
- Delta Air Lines 738 on the same route72.7%
- American Airlines 171 on the same route88.1%
- American Airlines 117 on the same route69.1%
- American Airlines 255 on the same route78.3%
- American Airlines 341 on the same route76.4%
- American Airlines 300 on the same route69.8%
- John F. Kennedy International (JFK) delay statistics
- Los Angeles International (LAX) 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.