Flight number record

DL 755

Delta Air Lines · Las Vegas to Atlanta

Route: LAS → ATL
Departs: 06:00
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 755, check with Delta Air Lines.

DL 755 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.6 hours. That rests on 365 flights, with a median arrival 6 minutes early.

Set against the rest of the country, DL 755's record is 16 points better than the US average of 77.3%. That gap is worth roughly 158 fewer late arrivals for every thousand flights.

On time

93.1%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

158 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.89%

1 hour+ late

3.9%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 6 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 755 flies

DL 755 flies LAS to ATL without a single fixed slot. Its most common scheduled departure was 06:00, used on 287 of 365 flights.

Departs 06:00287 flights78.6%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 755 runs 4 points better at 93.1%. 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 755 next to LAS to ATL

Every carrier on LAS to ATL combined arrived on time 83.8% of the time across 4,755 flights, so DL 755 is 9 points ahead of it. Delta flew 3,323 flights on the same city pair under all its flight numbers, including this one, and those ran 85.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 12 points.

DL 755 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 755	365	93.1%	158 min	0.55%	A+
All Delta Air Lines on LAS–ATL	3,323	85.7%	85 min	0.84%	A+
All carriers on LAS–ATL	4,755	83.8%	75 min	0.84%	B+
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 755 quarter by quarter

Quarter by quarter DL 755 held fairly steady: 96.7% in Jul–Sep 2025, 93.4% in Oct–Dec 2025, 88.8% in Jan–Mar 2026, 96.7% in Apr–Jun 2026 and 91.8% 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.

Jul–Sep 202530 flights96.7%
Oct–Dec 202592 flights93.4%
Jan–Mar 202690 flights88.8%
Apr–Jun 202691 flights96.7%
Jul–Sep 202662 flights91.8%

Scale runs 80% to 100%.

By weekday, DL 755 did best on Tuesday at 98.1% on time and worst on Thursday at 84.3%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 755 runs when it is late

When DL 755 is late it tends to be very late: 14 of its 25 late arrivals were an hour or more behind, and 10 were two hours or more.

15+ min early84 flights23.2%
Within 15 min253 flights69.9%
15–29 min late9 flights2.5%
30–59 min late2 flights0.6%
1–2 hours late4 flights1.1%
2+ hours late10 flights2.8%

Scale runs 0% to 100%.

Share of 362 completed flights by arrival against schedule.

5 of 23 late departures made up the time and arrived on time, 22% of them. Only 7 left on time and still arrived late.

The worst days

Worst days for DL 755

The latest arrival of the period was on 12 April 2026, 14 hours 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 755 in the period
Date	Arrived late by	Largest filed cause
12 April 2026	14 hours	Carrier
10 March 2026	12 hours 20 minutes	Carrier
4 October 2025	5 hours 32 minutes	Late-arriving aircraft
18 May 2026	4 hours 45 minutes	Carrier
21 May 2026	4 hours 36 minutes	Carrier

Delay causes

Why DL 755 runs late

Carrier accounts for 83% of the 3,946 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
83%
National Airspace System
10%
Late-arriving aircraft
8%

The largest share of delay minutes, 83%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,257 of the 3,946 delay minutes reported here. The split is drawn from 3,946 delay minutes reported on DL 755.

Cancellations are rare at 0.55%, 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

Badly late arrivals are rare here: only 3.9% 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.

At 1,747 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 365 flights under DL 755 in the data flew LAS 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. 365 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 755

For a booking, DL 755 has one of the better records a US domestic flight can show: 93.1% on time and 0.55% 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