Flight number record

DL 948

Delta Air Lines · Dallas-Fort Worth to Los Angeles

Route: DFW → LAX
Departs: 16:10
Flights: 273
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 948, check with Delta Air Lines.

DL 948 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 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 273 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 948's record is 8 points better than the US average of 77.3%. That gap is worth roughly 83 fewer late arrivals for every thousand flights.

On time

85.6%

Arrivals under 15 minutes late, of 271 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

0.37%

National rate is 1.89%

1 hour+ late

5.5%

National rate is 8.3%

These figures cover 273 flights between September 2025 and August 2026. The median arrival is 10 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 948 flies

DL 948 flies DFW to LAX without a single fixed slot. Its most common scheduled departure was 16:10, used on 50 of 273 flights, with 16:00 (47 flights) and 16:05 (41 flights) next.

Departs 16:1050 flights18.3%
Departs 16:0047 flights17.2%
Departs 16:0541 flights15.0%

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 16:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 948 runs 14 points better at 85.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

DL 948 next to DFW to LAX

Every carrier on DFW to LAX combined arrived on time 74.0% of the time across 6,184 flights, so DL 948 is 12 points ahead of it. Delta flew 757 flights on the same city pair under all its flight numbers, including this one, and those ran 89.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 5 points.

DL 948 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 948thin sample	273	85.6%	72 min	0.37%	A+
All Delta Air Lines on DFW–LAX	757	89.2%	95 min	1.59%	A
All carriers on DFW–LAX	6,184	74.0%	67 min	2.15%	C
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 948 quarter by quarter

DL 948 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Apr–Jun 2026 at 73.4%, a swing of 20 points on roughly 55 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 flights93.3%
Oct–Dec 202592 flights89.0%
Jan–Mar 202646 flights91.3%
Apr–Jun 202665 flights73.4%
Jul–Sep 202640 flights85.0%

Scale runs 65% to 100%.

By weekday, DL 948 did best on Wednesday at 94.4% on time and worst on Friday at 80.0%. Each day rests on about 39 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 948 runs when it is late

DL 948 often beats the schedule: 91 of 271 completed flights, 34%, arrived 15 minutes or more early. The 39 late arrivals split 10 under half an hour, 14 between 30 and 60 minutes, and 15 an hour or more.

15+ min early91 flights33.6%
Within 15 min141 flights52.0%
15–29 min late10 flights3.7%
30–59 min late14 flights5.2%
1–2 hours late8 flights3.0%
2+ hours late7 flights2.6%

Scale runs 0% to 100%.

Share of 271 completed flights by arrival against schedule.

7 of 37 late departures made up the time and arrived on time, 19% of them. 9 flights left on time and still arrived late.

The worst days

Worst days for DL 948

The latest arrival of the period was on 26 January 2026, 4 hours 33 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in May 2026.

The latest arrivals of DL 948 in the period
Date	Arrived late by	Largest filed cause
26 January 2026	4 hours 33 minutes	Late-arriving aircraft
16 May 2026	3 hours 14 minutes	Carrier
10 May 2026	3 hours 7 minutes	Extreme weather
2 June 2026	2 hours 58 minutes	Extreme weather
24 May 2026	2 hours 53 minutes	Extreme weather

Delay causes

Why DL 948 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 2,822 reported delay minutes.

Carrier
38%
Late-arriving aircraft
23%
National Airspace System
20%
Extreme weather
19%

Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.1 times the usual weather exposure. The split is drawn from 2,822 delay minutes reported on DL 948.

Cancellations are rare at 0.37%, 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

5.5% 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 a little over an hour, which a normal layover absorbs.

The 1,235 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The same number turns up on one other city pair in the data, including LAX to DFW (47), but none flew often enough under DL 948 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DFW to LAX only.

One caution: this is a thin sample. 273 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 948

For a booking, DL 948 has one of the better records a US domestic flight can show: 85.6% on time and 0.37% 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