Flight number record

DL 393

Delta Air Lines · Cincinnati to Los Angeles

Route: CVG → LAX
Departs: 06:30
Flights: 337
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 393, check with Delta Air Lines.

DL 393 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 337 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 393's record is 7 points better than the US average of 77.6%. That gap is worth roughly 72 fewer late arrivals for every thousand flights.

On time

84.8%

Arrivals under 15 minutes late, of 330 completed flights

Avg delay

57 min

Across delayed arrivals only, not all flights

Cancelled

2.08%

National rate is 1.81%

1 hour+ late

3.6%

National rate is 8.1%

These figures cover 337 flights between July 2025 and June 2026. The median arrival is 9 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 393 flies

DL 393 flies CVG to LAX without a single fixed slot. Its most common scheduled departure was 06:30, used on 130 of 337 flights, with 06:15 (90 flights) and 06:20 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:30130 flights38.6%
Departs 06:1590 flights26.7%
Departs 06:2041 flights12.2%

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 06:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 393 runs 5 points worse at 84.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 393 next to CVG to LAX

Every carrier on CVG to LAX combined arrived on time 81.7% of the time across 363 flights, so DL 393 is 3 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 3 points.

DL 393 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 393thin sample	337	84.8%	57 min	2.08%	B
All Delta Air Lines on CVG–LAXthin sample	337	84.8%	57 min	2.08%	B
All carriers on CVG–LAXthin sample	363	81.7%	80 min	1.93%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 393 quarter by quarter

Quarter by quarter DL 393 held fairly steady: 88.3% in Jul–Sep 2025, 86.2% in Oct–Dec 2025, 81.4% in Jan–Mar 2026 and 83.9% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202579 flights88.3%
Oct–Dec 202581 flights86.2%
Jan–Mar 202689 flights81.4%
Apr–Jun 202688 flights83.9%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 393 ranged from 80.4% on Friday to 88.0% on Thursday. With about 48 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 393 runs late

One category carries most of the weight here. Carrier accounts for 52% of the 2,855 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.

Carrier
52%
Late-arriving aircraft
34%
National Airspace System
13%
Extreme weather
1%

34% 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 2,855 reported delay minutes here, that single category outweighs weather by 34 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 2,855 delay minutes reported on DL 393.

Cancellations sit at 2.08% against a national 1.81%, 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 8.1% 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 1,900 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 337 flights under DL 393 in the data flew CVG to LAX. 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. 337 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 393

For a booking, read DL 393 as 84.8% on time with 2.08% cancelled over 337 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