Flight number record
DL 3051
Delta Air Lines · Valparaiso to Atlanta
- Route
- VPS → ATL
- Departs
- 09:21
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 3051, check with Delta Air Lines.
DL 3051 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 364 flights, with a median arrival 15 minutes early.
Set against the rest of the country, DL 3051's record is 13 points better than the US average of 77.3%. That gap is worth roughly 134 fewer late arrivals for every thousand flights.
Key figures
On time
90.7%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
2.20%
National rate is 1.89%
1 hour+ late
3.9%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 15 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 3051 flies
DL 3051 flies VPS to ATL without a single fixed slot. Its most common scheduled departure was 09:21, used on 92 of 364 flights, with 09:19 (51 flights) next.
- Departs 09:2192 flights25.3%
- Departs 09:1951 flights14.0%
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 09:21 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 3051 runs 7 points better at 90.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 3051 next to VPS to ATL
Every carrier on VPS to ATL combined arrived on time 84.1% of the time across 2,387 flights, so DL 3051 is 7 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 3051thin sample | 364 | 90.7% | 108 min | 2.20% | A |
| All Delta Air Lines on VPS–ATL | 2,387 | 84.1% | 80 min | 2.05% | B |
| All carriers on VPS–ATL | 2,387 | 84.1% | 80 min | 2.05% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 3051 quarter by quarter
Quarter by quarter DL 3051 held fairly steady: 96.7% in Jul–Sep 2025, 91.1% in Oct–Dec 2025, 89.5% in Jan–Mar 2026, 89.9% in Apr–Jun 2026 and 90.2% in Jul–Sep 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 202530 flights96.7%
- Oct–Dec 202592 flights91.1%
- Jan–Mar 202689 flights89.5%
- Apr–Jun 202691 flights89.9%
- Jul–Sep 202662 flights90.2%
Scale runs 80% to 100%.
By weekday, DL 3051 did best on Friday at 98.0% on time and worst on Thursday at 82.4%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 3051 runs when it is late
DL 3051 often beats the schedule: 178 of 356 completed flights, 50%, arrived 15 minutes or more early. The 33 late arrivals split 7 under half an hour, 12 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early178 flights50.0%
- Within 15 min145 flights40.7%
- 15–29 min late7 flights2.0%
- 30–59 min late12 flights3.4%
- 1–2 hours late6 flights1.7%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
12 of 42 late departures made up the time and arrived on time, 29% of them. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 3051
The latest arrival of the period was on 18 June 2026, 14 hours 31 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across June, March, December and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 June 2026 | 14 hours 31 minutes | Carrier |
| 6 March 2026 | 7 hours 21 minutes | Carrier |
| 28 December 2025 | 4 hours 10 minutes | Late-arriving aircraft |
| 28 April 2026 | 3 hours 21 minutes | Extreme weather |
| 24 December 2025 | 2 hours 57 minutes | Late-arriving aircraft |
Delay causes
Why DL 3051 runs late
Carrier accounts for 43% of the 3,563 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 37%Late-arriving aircraft
- 11%Extreme weather
- 8%National Airspace System
Extreme weather accounts for 11% 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 1.9 times the usual weather exposure. The split is drawn from 3,563 delay minutes reported on DL 3051.
Cancellations sit at 2.20% against a national 1.89%, 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 3.9% 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.
DL 3051 is not only a VPS to ATL flight. It also flew ATL to VPS (327 flights, 90.9% 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. 364 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 |
|---|---|---|---|---|---|
| ATL to VPSthin sample | 327 | 90.9% | 53 min | 2.14% | A |
What to do with this
Booking DL 3051
For a booking, read DL 3051 as 90.7% on time with 2.20% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- VPS to ATL, every carrier and departure
- ATL to VPS, the return direction
- Delta Air Lines 3085 on the same route88.0%
- Delta Air Lines 2832 on the same route76.0%
- Hartsfield-Jackson Atlanta International (ATL) 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
- Why the first flight of the morning is statistically safest
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.