Flight number record

DL 899

Delta Air Lines · Los Angeles to Atlanta

Route: LAX → ATL
Departs: 22:55
Flights: 350
Period: September 2025 to August 2026

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

DL 899 lands a B+, 2 points 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 350 flights, with a median arrival 4 minutes early.

On time

79.5%

Arrivals under 15 minutes late, of 346 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.89%

1 hour+ late

5.8%

National rate is 8.3%

These figures cover 350 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 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 350 flights, with 22:40 (71 flights) and 22:45 (59 flights) next.

Departs 22:55172 flights49.1%
Departs 22:4071 flights20.3%
Departs 22:4559 flights16.9%

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 22:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 899 runs 9 points better at 79.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

DL 899 next to LAX to ATL

Every carrier on LAX to ATL combined arrived on time 78.6% of the time across 4,843 flights, so DL 899 is about level with it. Delta flew 3,811 flights on the same city pair under all its flight numbers, including this one, and those ran 80.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 2 points.

DL 899 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 899thin sample	350	79.5%	64 min	0.86%	B+
All Delta Air Lines on LAX–ATL	3,811	80.8%	66 min	0.84%	B+
All carriers on LAX–ATL	4,843	78.6%	68 min	0.89%	B+
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 899 quarter by quarter

DL 899 did not run the same all year. Its best quarter was Jul–Sep 2026 at 90.3% on time and its weakest Jan–Mar 2026 at 71.3%, a swing of 19 points on roughly 88 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 202521 flights—
Oct–Dec 202586 flights71.8%
Jan–Mar 202690 flights71.3%
Apr–Jun 202691 flights86.8%
Jul–Sep 202662 flights90.3%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 899 ranged from 76.1% on Saturday to 83.0% on Monday. With about 50 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late DL 899 runs when it is late

The 71 late arrivals split 33 under half an hour, 18 between 30 and 60 minutes, and 20 an hour or more.

15+ min early86 flights24.9%
Within 15 min189 flights54.6%
15–29 min late33 flights9.5%
30–59 min late18 flights5.2%
1–2 hours late12 flights3.5%
2+ hours late8 flights2.3%

Scale runs 0% to 100%.

Share of 346 completed flights by arrival against schedule.

A late pushback is often recovered here: of 80 departures that left 15 minutes late or more, 25 still arrived on time. 16 flights left on time and still arrived late.

The worst days

Worst days for DL 899

The latest arrival of the period was on 8 December 2025, 11 hours 2 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.

The latest arrivals of DL 899 in the period
Date	Arrived late by	Largest filed cause
8 December 2025	11 hours 2 minutes	Carrier
9 January 2026	8 hours 48 minutes	Carrier
10 January 2026	3 hours 11 minutes	Carrier
3 December 2025	2 hours 56 minutes	Carrier
8 November 2025	2 hours 16 minutes	Late-arriving aircraft

Delay causes

Why DL 899 runs late

Carrier accounts for 58% of the 4,570 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
58%
Late-arriving aircraft
28%
National Airspace System
13%
Security
1%

The largest share of delay minutes, 58%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,635 of the 4,570 delay minutes reported here. The split is drawn from 4,570 delay minutes reported on DL 899.

Cancellations are rare at 0.86%, 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 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 350 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. 350 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 79.5% on time with 0.86% cancelled over 350 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures