Flight number record

DL 3051

Delta Air Lines · Valparaiso to Atlanta

Route: VPS → ATL
Departs: 09:17
Flights: 360
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs about 2.3 hours. That rests on 360 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 77.6%. That gap is worth roughly 128 fewer late arrivals for every thousand flights.

On time

90.4%

Arrivals under 15 minutes late, of 353 completed flights

Avg delay

140 min

Across delayed arrivals only, not all flights

Cancelled

1.94%

National rate is 1.81%

1 hour+ late

5.4%

National rate is 8.1%

These figures cover 360 flights between July 2025 and June 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.

Schedule

When DL 3051 flies

DL 3051 flies VPS to ATL without a single fixed slot. Its most common scheduled departure was 09:17, used on 69 of 360 flights, with 09:19 (45 flights) and 09:21 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:1769 flights19.2%
Departs 09:1945 flights12.5%
Departs 09:2136 flights10.0%

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 09:17 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 3051 runs 6 points better at 90.4%. 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 3051 next to VPS to ATL

Every carrier on VPS to ATL combined arrived on time 85.9% of the time across 2,387 flights, so DL 3051 is 5 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 9 points.

DL 3051 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 3051thin sample	360	90.4%	140 min	1.94%	A
All Delta Air Lines on VPS–ATL	2,387	85.9%	87 min	1.84%	A
All carriers on VPS–ATL	2,387	85.9%	87 min	1.84%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 3051 quarter by quarter

Quarter by quarter DL 3051 held fairly steady: 90.9% in Jul–Sep 2025, 91.1% in Oct–Dec 2025, 89.5% in Jan–Mar 2026 and 89.9% in Apr–Jun 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202588 flights90.9%
Oct–Dec 202592 flights91.1%
Jan–Mar 202689 flights89.5%
Apr–Jun 202691 flights89.9%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 3051 ranged from 84.0% on Thursday to 94.1% on Monday. With about 51 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 3051 runs late

One category carries most of the weight here. Carrier accounts for 51% of the 4,749 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
51%
Late-arriving aircraft
33%
Extreme weather
11%
National Airspace System
5%

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 1.8 times the usual weather exposure. The split is drawn from 4,749 delay minutes reported on DL 3051.

Cancellations sit at 1.94% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

5.4% 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 2.3 hours, which a normal layover absorbs.

DL 3051 is not only a VPS to ATL flight. It also flew ATL to VPS (323 flights, 89.9% 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. 360 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.

Other routes flown as DL 3051
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to VPSthin sample	323	89.9%	56 min	1.86%	A

What to do with this

Booking DL 3051

For a booking, read DL 3051 as 90.4% on time with 1.94% cancelled over 360 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