Flight number record

DL 899

Delta Air Lines · Los Angeles to Atlanta

Route: LAX → ATL
Departs: 22:55
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 899, check with Delta Air Lines.

DL 899 lands a B, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 349 flights, with a median arrival 4 minutes early.

On time

76.7%

Arrivals under 15 minutes late, of 344 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

1.15%

National rate is 1.81%

1 hour+ late

6.4%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 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.

Schedule

When DL 899 flies

DL 899 flies LAX to ATL without a single fixed slot. Its most common scheduled departure was 22:55, used on 172 of 349 flights, with 22:45 (98 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:55172 flights49.3%
Departs 22:4598 flights28.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 22:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 899 runs 6 points better at 76.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 899 next to LAX to ATL

Every carrier on LAX to ATL combined arrived on time 78.4% of the time across 5,013 flights, so DL 899 is 2 points behind it. Delta flew 3,844 flights on the same city pair under all its flight numbers, including this one, and those ran 81.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 5 points.

DL 899 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 899thin sample	349	76.7%	62 min	1.15%	B
All Delta Air Lines on LAX–ATL	3,844	81.5%	64 min	0.86%	B+
All carriers on LAX–ATL	5,013	78.4%	67 min	0.92%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 899 quarter by quarter

DL 899 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.8% on time and its weakest Jan–Mar 2026 at 71.3%, a swing of 16 points on roughly 87 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 202582 flights76.5%
Oct–Dec 202586 flights71.8%
Jan–Mar 202690 flights71.3%
Apr–Jun 202691 flights86.8%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 899 ranged from 72.0% on Sunday to 79.6% on Thursday. With about 50 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 899 runs late

One category carries most of the weight here. Carrier accounts for 60% of the 4,992 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
60%
Late-arriving aircraft
27%
National Airspace System
12%
Security
1%

The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,987 of the 4,992 delay minutes reported here. The split is drawn from 4,992 delay minutes reported on DL 899.

Cancellations sit at 1.15% against a national 1.81%, which is ordinary. Diversions add another 0.29%.

Connections and routes

What a delay on this flight costs

6.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 1,947 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 349 flights under DL 899 in the data flew LAX to ATL. 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. 349 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 899

For a booking, read DL 899 as 76.7% on time with 1.15% cancelled over 349 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures