Flight number record

DL 722

Delta Air Lines · Las Vegas to Atlanta

Route: LAS → ATL
Departs: 23:15
Flights: 304
Period: July 2025 to June 2026

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

DL 722 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 55 minutes on average. That is a workable record, not a spotless one. That rests on 304 flights, with a median arrival 6 minutes early.

Set against the rest of the country, DL 722's record is 5 points better than the US average of 77.6%. That gap is worth roughly 51 fewer late arrivals for every thousand flights.

On time

82.7%

Arrivals under 15 minutes late, of 301 completed flights

Avg delay

55 min

Across delayed arrivals only, not all flights

Cancelled

0.66%

National rate is 1.81%

1 hour+ late

5.6%

National rate is 8.1%

These figures cover 304 flights between July 2025 and June 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.

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 304 flights, with 23:21 (34 flights) and 23:35 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:1554 flights17.8%
Departs 23:2134 flights11.2%
Departs 23:3534 flights11.2%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 70.5%, and DL 722 runs 12 points better at 82.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 722 next to LAS to ATL

Every carrier on LAS to ATL combined arrived on time 85.2% of the time across 4,791 flights, so DL 722 is 3 points behind it. Delta flew 3,327 flights on the same city pair under all its flight numbers, including this one, and those ran 87.7% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 722 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 722thin sample	304	82.7%	55 min	0.66%	B+
All Delta Air Lines on LAS–ATL	3,327	87.7%	83 min	0.72%	A+
All carriers on LAS–ATL	4,791	85.2%	72 min	0.88%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 Jul–Sep 2025 at 73.9%, a swing of 23 points on roughly 76 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 202592 flights73.9%
Oct–Dec 202586 flights82.1%
Jan–Mar 202690 flights86.5%
Apr–Jun 202636 flights97.2%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 722 did best on Wednesday at 95.6% on time and worst on Sunday at 69.0%. Each day rests on about 43 flights, so a gap of 27 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 722 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 58% of the 2,849 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
58%
Carrier
25%
National Airspace System
12%
Security
4%
Extreme weather
1%

58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,849 reported delay minutes here, that single category outweighs weather by 58 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,849 delay minutes reported on DL 722.

Cancellations are rare at 0.66%, below the national 1.81% 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

5.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 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 SEA to JFK (31) and ATL to LAS (24), 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. 304 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, read DL 722 as 82.7% on time with 0.66% cancelled over 304 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures