Flight number record

DL 919

Delta Air Lines · Atlanta to Las Vegas

Route: ATL → LAS
Departs: 18:30
Flights: 340
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 919, check with Delta Air Lines.

DL 919 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 340 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.6%, so DL 919 runs 4 points behind the country as a whole. Across a thousand flights that is about 41 extra late arrivals.

On time

73.5%

Arrivals under 15 minutes late, of 339 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

8.0%

National rate is 8.1%

These figures cover 340 flights between July 2025 and June 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 919 flies

DL 919 flies ATL to LAS without a single fixed slot. Its most common scheduled departure was 18:30, used on 80 of 340 flights, with 19:15 (49 flights) and 17:03 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:3080 flights23.5%
Departs 19:1549 flights14.4%
Departs 17:0336 flights10.6%

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 18:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 919 runs 5 points better at 73.5%. 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 919 next to ATL to LAS

Every carrier on ATL to LAS combined arrived on time 75.9% of the time across 4,796 flights, so DL 919 is 2 points behind it. Delta flew 3,329 flights on the same city pair under all its flight numbers, including this one, and those ran 77.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 8 points.

DL 919 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 919thin sample	340	73.5%	59 min	0.00%	C+
All Delta Air Lines on ATL–LAS	3,329	77.3%	55 min	0.60%	B+
All carriers on ATL–LAS	4,796	75.9%	60 min	0.77%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 919 quarter by quarter

DL 919 did not run the same all year. Its best quarter was Jan–Mar 2026 at 80.0% on time and its weakest Apr–Jun 2026 at 64.2%, a swing of 16 points on roughly 85 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 flights72.8%
Oct–Dec 202591 flights74.4%
Jan–Mar 202690 flights80.0%
Apr–Jun 202667 flights64.2%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, DL 919 did best on Wednesday at 87.8% on time and worst on Thursday at 56.2%. Each day rests on about 49 flights, so a gap of 32 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 919 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,342 reported delay minutes.

Carrier
40%
National Airspace System
29%
Late-arriving aircraft
20%
Extreme weather
10%
Security
1%

The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,125 of the 5,342 delay minutes reported here. The split is drawn from 5,342 delay minutes reported on DL 919.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

8.0% 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 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 one other city pair in the data, including PDX to DTW (14), but none flew often enough under DL 919 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to LAS only.

One caution: this is a thin sample. 340 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 919

For a booking, read DL 919 as 73.5% on time with 0.00% cancelled over 340 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