Flight number record
DL 1408
Delta Air Lines · Atlanta to San Antonio
- Route
- ATL → SAT
- Departs
- 12:15
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1408, check with Delta Air Lines.
DL 1408 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 361 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 1408's record is 9 points better than the US average of 77.3%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.
Key figures
On time
85.8%
Arrivals under 15 minutes late, of 353 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
1.94%
National rate is 1.89%
1 hour+ late
4.5%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 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.
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Schedule
When DL 1408 flies
DL 1408 flies ATL to SAT without a single fixed slot. Its most common scheduled departure was 12:15, used on 56 of 361 flights, with 11:07 (38 flights) next.
- Departs 12:1556 flights15.5%
- Departs 11:0738 flights10.5%
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 12:15 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 1408 runs 8 points better at 85.8%. 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 1408 next to ATL to SAT
Every carrier on ATL to SAT combined arrived on time 81.1% of the time across 2,962 flights, so DL 1408 is 5 points ahead of it. Delta flew 2,596 flights on the same city pair under all its flight numbers, including this one, and those ran 81.1% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1408thin sample | 361 | 85.8% | 59 min | 1.94% | A |
| All Delta Air Lines on ATL–SAT | 2,596 | 81.1% | 55 min | 1.85% | B |
| All carriers on ATL–SAT | 2,962 | 81.1% | 56 min | 1.65% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1408 quarter by quarter
Quarter by quarter DL 1408 held fairly steady: 90.0% in Jul–Sep 2025, 87.4% in Oct–Dec 2025, 84.9% in Jan–Mar 2026, 85.2% in Apr–Jun 2026 and 83.9% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202588 flights87.4%
- Jan–Mar 202690 flights84.9%
- Apr–Jun 202691 flights85.2%
- Jul–Sep 202662 flights83.9%
Scale runs 75% to 95%.
By weekday, DL 1408 did best on Wednesday at 90.2% on time and worst on Monday at 76.9%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1408 runs when it is late
DL 1408 often beats the schedule: 112 of 353 completed flights, 32%, arrived 15 minutes or more early. The 50 late arrivals split 15 under half an hour, 19 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early112 flights31.7%
- Within 15 min191 flights54.1%
- 15–29 min late15 flights4.2%
- 30–59 min late19 flights5.4%
- 1–2 hours late11 flights3.1%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 353 completed flights by arrival against schedule.
A late pushback is often recovered here: of 63 departures that left 15 minutes late or more, 20 still arrived on time. Only 7 left on time and still arrived late.
The worst days
Worst days for DL 1408
The latest arrival of the period was on 25 May 2026, 8 hours 39 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across May, April, December and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 May 2026 | 8 hours 39 minutes | National Airspace System |
| 28 April 2026 | 2 hours 19 minutes | Late-arriving aircraft |
| 4 December 2025 | 2 hours 11 minutes | Carrier |
| 4 August 2026 | 2 hours 7 minutes | National Airspace System |
| 7 December 2025 | 2 hours 1 minute | Late-arriving aircraft |
Delay causes
Why DL 1408 runs late
Carrier accounts for 57% of the 2,946 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Carrier
- 24%National Airspace System
- 18%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,668 of the 2,946 delay minutes reported here. The split is drawn from 2,946 delay minutes reported on DL 1408.
Cancellations sit at 1.94% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.3% 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.
The 874 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.
DL 1408 is not only a ATL to SAT flight. It also flew SAT to ATL (330 flights, 80.1% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 361 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SAT to ATLthin sample | 330 | 80.1% | 72 min | 2.12% | B |
What to do with this
Booking DL 1408
For a booking, read DL 1408 as 85.8% on time with 1.94% cancelled over 361 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to SAT, every carrier and departure
- SAT to ATL, the return direction
- Delta Air Lines 2893 on the same route74.2%
- Delta Air Lines 1465 on the same route77.5%
- Delta Air Lines 1508 on the same route78.5%
- Delta Air Lines 1676 on the same route91.3%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- San Antonio International (SAT) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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 ; recomputed monthly. How this data is collected.