Flight number record

DL 722

Delta Air Lines · Las Vegas to Atlanta

Route: LAS → ATL
Departs: 23:15
Flights: 255
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 722, check with Delta Air Lines.

DL 722 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 255 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 722's record is 9 points better than the US average of 77.3%. That gap is worth roughly 88 fewer late arrivals for every thousand flights.

On time

86.1%

Arrivals under 15 minutes late, of 252 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.78%

National rate is 1.89%

1 hour+ late

6.0%

National rate is 8.3%

These figures cover 255 flights between September 2025 and August 2026. The median arrival is 8 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 722 flies

DL 722 flies LAS to ATL without a single fixed slot. Its most common scheduled departure was 23:15, used on 54 of 255 flights, with 23:35 (34 flights) and 23:54 (32 flights) next.

Departs 23:1554 flights21.2%
Departs 23:3534 flights13.3%
Departs 23:5432 flights12.5%

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 23:15 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 722 runs 16 points better at 86.1%. 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 722 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 722 is 2 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 5 points.

DL 722 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 722thin sample	255	86.1%	62 min	0.78%	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 722 quarter by quarter

DL 722 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.2% on time and its weakest Oct–Dec 2025 at 82.1%, a swing of 15 points on roughly 64 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 flights83.3%
Oct–Dec 202586 flights82.1%
Jan–Mar 202690 flights86.5%
Apr–Jun 202636 flights97.2%
Jul–Sep 202613 flights—

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 722 did best on Wednesday at 97.2% on time and worst on Sunday at 69.7%. Each day rests on about 36 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 722 runs when it is late

DL 722 often beats the schedule: 69 of 252 completed flights, 27%, arrived 15 minutes or more early. The 35 late arrivals split 8 under half an hour, 12 between 30 and 60 minutes, and 15 an hour or more.

15+ min early69 flights27.4%
Within 15 min148 flights58.7%
15–29 min late8 flights3.2%
30–59 min late12 flights4.8%
1–2 hours late11 flights4.4%
2+ hours late4 flights1.6%

Scale runs 0% to 100%.

Share of 252 completed flights by arrival against schedule.

A late pushback is often recovered here: of 51 departures that left 15 minutes late or more, 20 still arrived on time. Only 4 left on time and still arrived late.

The worst days

Worst days for DL 722

The latest arrival of the period was on 1 January 2026, 3 hours 26 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across January, November, August and March, with no single month standing out.

The latest arrivals of DL 722 in the period
Date	Arrived late by	Largest filed cause
1 January 2026	3 hours 26 minutes	Late-arriving aircraft
9 November 2025	2 hours 38 minutes	Late-arriving aircraft
14 August 2026	2 hours 28 minutes	Carrier
7 March 2026	2 hours 15 minutes	Carrier
15 March 2026	1 hour 50 minutes	National Airspace System

Delay causes

Why DL 722 runs late

Late-arriving aircraft accounts for 59% of the 2,184 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
59%
Carrier
23%
National Airspace System
11%
Security
6%
Extreme weather
1%

59% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,184 reported delay minutes here, that single category outweighs weather by 47 to one. The split is drawn from 2,184 delay minutes reported on DL 722.

Cancellations are rare at 0.78%, 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

6.0% 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 1,747 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.

The same number turns up on two other city pairs in the data, including ATL to LAS (86) and SEA to JFK (31), but none flew often enough under DL 722 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAS 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 722

For a booking, DL 722 has one of the better records a US domestic flight can show: 86.1% on time and 0.78% 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