Flight number record

DL 477

Delta Air Lines · Los Angeles to Fort Lauderdale

Route: LAX → FLL
Departs: 23:45
Flights: 347
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 477, check with Delta Air Lines.

DL 477 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about 55 minutes behind schedule. That rests on 347 flights, with a median arrival 2 minutes late.

The national on-time rate over the same period is 77.3%, so DL 477 runs 6 points behind the country as a whole. Across a thousand flights that is about 60 extra late arrivals.

On time

71.3%

Arrivals under 15 minutes late, of 342 completed flights

Avg delay

54 min

Across delayed arrivals only, not all flights

Cancelled

1.15%

National rate is 1.89%

1 hour+ late

6.7%

National rate is 8.3%

These figures cover 347 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

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Schedule

When DL 477 flies

DL 477 flies LAX to FLL without a single fixed slot. Its most common scheduled departure was 23:45, used on 63 of 347 flights, with 23:30 (61 flights) next.

Departs 23:4563 flights18.2%
Departs 23:3061 flights17.6%

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 23:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 477 runs level with that at 71.3%. 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 477 next to LAX to FLL

Every carrier on LAX to FLL combined arrived on time 73.2% of the time across 2,331 flights, so DL 477 is 2 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 10 points.

DL 477 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 477thin sample	347	71.3%	54 min	1.15%	C
All Delta Air Lines on LAX–FLL	376	71.2%	53 min	1.06%	C
All carriers on LAX–FLL	2,331	73.2%	58 min	1.46%	C
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 477 quarter by quarter

DL 477 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jan–Mar 2026 at 64.4%, a swing of 26 points on roughly 69 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 202591 flights65.9%
Jan–Mar 202690 flights64.4%
Apr–Jun 202691 flights78.9%
Jul–Sep 202645 flights68.2%

Scale runs 55% to 95%.

By weekday, DL 477 did best on Saturday at 84.4% on time and worst on Monday at 58.3%. Each day rests on about 50 flights, so a gap of 26 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 477 runs when it is late

The 98 late arrivals split 41 under half an hour, 34 between 30 and 60 minutes, and 23 an hour or more.

15+ min early53 flights15.5%
Within 15 min191 flights55.8%
15–29 min late41 flights12.0%
30–59 min late34 flights9.9%
1–2 hours late18 flights5.3%
2+ hours late5 flights1.5%

Scale runs 0% to 100%.

Share of 342 completed flights by arrival against schedule.

17 of 88 late departures made up the time and arrived on time, 19% of them. In the other direction, 27 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 FLL.

The worst days

Worst days for DL 477

The latest arrival of the period was on 17 October 2025, 9 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of DL 477 in the period
Date	Arrived late by	Largest filed cause
17 October 2025	9 hours 39 minutes	Carrier
10 October 2025	8 hours 31 minutes	Carrier
26 December 2025	2 hours 16 minutes	Late-arriving aircraft
14 August 2026	2 hours 15 minutes	Late-arriving aircraft
8 December 2025	2 hours 2 minutes	Late-arriving aircraft

Delay causes

Why DL 477 runs late

Carrier accounts for 42% of the 5,301 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
42%
Late-arriving aircraft
37%
National Airspace System
20%
Security
1%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,301 reported delay minutes here, that single category outweighs weather by 37 to one. The split is drawn from 5,301 delay minutes reported on DL 477.

Cancellations sit at 1.15% against a national 1.89%, which is ordinary. Diversions add another 0.29%.

Connections and routes

What a delay on this flight costs

6.7% 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 55 minutes, which a normal layover absorbs.

At 2,343 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 347 flights under DL 477 in the data flew LAX to FLL. 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. 347 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 477

For a booking, read DL 477 as 71.3% on time with 1.15% cancelled over 347 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