Flight number record

DL 1530

Delta Air Lines · Raleigh to Atlanta

Route: RDU → ATL
Departs: 08:50
Flights: 255
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1530, check with Delta Air Lines.

DL 1530 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 a little over an hour. That rests on 255 flights, with a median arrival 12 minutes early.

Set against the rest of the country, DL 1530's record is 12 points better than the US average of 77.3%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.

On time

89.3%

Arrivals under 15 minutes late, of 252 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

1.18%

National rate is 1.89%

1 hour+ late

3.6%

National rate is 8.3%

These figures cover 255 flights between September 2025 and August 2026. The median arrival is 12 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 1530 flies

DL 1530 flies RDU to ATL without a single fixed slot. Its most common scheduled departure was 08:50, used on 57 of 255 flights, with 08:20 (36 flights) and 08:30 (30 flights) next.

Departs 08:5057 flights22.4%
Departs 08:2036 flights14.1%
Departs 08:3030 flights11.8%

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 08:50 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 1530 runs 5 points better at 89.3%. 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 1530 next to RDU to ATL

Every carrier on RDU to ATL combined arrived on time 86.5% of the time across 4,643 flights, so DL 1530 is 3 points ahead of it. Delta flew 3,812 flights on the same city pair under all its flight numbers, including this one, and those ran 88.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 8 points.

DL 1530 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1530thin sample	255	89.3%	71 min	1.18%	A
All Delta Air Lines on RDU–ATL	3,812	88.3%	82 min	1.50%	A
All carriers on RDU–ATL	4,643	86.5%	86 min	1.59%	A
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 1530 quarter by quarter

Quarter by quarter DL 1530 held fairly steady: 86.4% in Jan–Mar 2026, 94.5% in Apr–Jun 2026 and 86.9% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Oct–Dec 202512 flights—
Jan–Mar 202690 flights86.4%
Apr–Jun 202691 flights94.5%
Jul–Sep 202662 flights86.9%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1530 did best on Thursday at 97.2% on time and worst on Sunday at 83.3%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 1530 runs when it is late

DL 1530 often beats the schedule: 104 of 252 completed flights, 41%, arrived 15 minutes or more early. The 27 late arrivals split 6 under half an hour, 12 between 30 and 60 minutes, and 9 an hour or more.

15+ min early104 flights41.3%
Within 15 min121 flights48.0%
15–29 min late6 flights2.4%
30–59 min late12 flights4.8%
1–2 hours late4 flights1.6%
2+ hours late5 flights2.0%

Scale runs 0% to 100%.

Share of 252 completed flights by arrival against schedule.

8 of 29 late departures made up the time and arrived on time, 28% of them. 6 flights left on time and still arrived late.

The worst days

Worst days for DL 1530

The latest arrival of the period was on 17 March 2026, 4 hours 43 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 1530 in the period
Date	Arrived late by	Largest filed cause
17 March 2026	4 hours 43 minutes	Carrier
13 January 2026	3 hours 36 minutes	Carrier
7 February 2026	3 hours 2 minutes	Carrier
8 April 2026	2 hours 14 minutes	Carrier
28 April 2026	2 hours 8 minutes	National Airspace System

Delay causes

Why DL 1530 runs late

Carrier accounts for 72% of the 1,918 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
72%
National Airspace System
25%
Late-arriving aircraft
3%

The largest share of delay minutes, 72%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,382 of the 1,918 delay minutes reported here. The split is drawn from 1,918 delay minutes reported on DL 1530.

Cancellations sit at 1.18% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.6% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The same number turns up on three other city pairs in the data, including MCO to MSP (63), ATL to SGF (29) and SGF to ATL (29), but none flew often enough under DL 1530 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RDU to ATL only.

One caution: this is a thin sample. 255 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 1530

For a booking, DL 1530 has one of the better records a US domestic flight can show: 89.3% on time and 1.18% cancelled. That is a base rate, not a promise about any single 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