Flight profile · Delta Air Lines
DL3146
Atlanta (ATL) to New Orleans (MSY) · scheduled 4:30 PM – 4:15 PM
How DL3146 performs
619 operations, June 2024 – August 2026.
Between its first and last recorded date on ATL → MSY, DL3146 averaged about 5 operations a week (619 in 816 days, cancelled ones included).
DL3146 arrived on time 76.4% of the time, against 78.1% for all ATL → MSY flights, so this departure is 1.7 percentage points worse than the route as a whole. Against Delta Air Lines’ own flights on this route it is 3.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 619 operations, June 2024 – August 2026 · If DL3146 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL3146 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL3146 | 76.4% | 2.26% | -3 min | 4.8% | 619 |
| Delta Air Lines on ATL → MSY | 79.4% | 1.32% | -4 min | 6.3% | 10,142 |
| All ATL → MSY flights | 78.1% | 1.23% | -4 min | 6.9% | 13,788 |
DL3146 has cancelled 2.26% of its scheduled departures (14 of 619), against 1.23% for all ATL → MSY flights — this specific departure cancels 1.0 percentage points more often than the route as a whole. Different flight numbers on the same route can carry different aircraft, crews and schedules, so this is a fact about DL3146 specifically, not about the route it flies.
4.8% of DL3146’s arrivals were an hour or more late, against 6.9% across ATL → MSY, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
Why DL3146 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for DL3146 on ATL → MSY. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies DL3146 comes in late, and what that does to the departure.
The aircraft flying DL3146 came in 15 or more minutes late on 15% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into ATL: 573 of 605 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| DL3146 | 15% |
| Network, same turn | 17% |
71 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often DL3146’s aircraft landed 15 or more minutes late is about the same as the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
From pushback to gate
When it leaves ATL late, does that still matter by the time it reaches MSY?
On arrival at MSY, DL3146 spends 7.6 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 2.2 minutes longer than a typical MSY arrival (5.4 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 62,539 ATL departures. Taxi-in is landing to gate, set against 157,766 arrivals at MSY. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
The hour it leaves ATL
DL3146 has one departure time, 4:30 PM, so this is what that hour at ATL is worth.
On-time arrival rate. 62,539 departures from ATL are scheduled in the 4 PM–5 PM hour over the period, against 1,039,468 across the whole day.
DL3146 is scheduled out of ATL at 4:30 PM, in the 4 PM–5 PM bank. Departures from ATL in that hour arrive on time 72.9% of the time against 78.6% across the airport’s whole day — the slot alone is worth 5.8 points worse before anything about this particular flight is considered.
Both airport figures cover every destination from ATL, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes DL3146 has flown
Carriers reassign flight numbers. DL3146 also served this other city pair in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| MSY→ATL New Orleans to Atlanta | June 7, 2024 – August 31, 2026 | 469 | 78.5% |
The figures above describe only ATL → MSY, the route DL3146 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
35 min late
against a median of 3 min early
Percentiles over 619 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL3128 | Delta Air Lines | 90.7% | 9 min early | 751 |
| DL1424 | Delta Air Lines | 86.4% | 7 min early | 749 |
| DL2542 | Delta Air Lines | 83.4% | 4 min early | 1,105 |
| DL3157 | Delta Air Lines | 79.3% | 3 min early | 611 |
| DL3146 this flight | Delta Air Lines | 76.4% | 3 min early | 619 |
| DL2224 | Delta Air Lines | 75.0% | 3 min early | 1,122 |
| DL1450 | Delta Air Lines | 70.0% | 1 min early | 707 |
Among all 7 departures on this route with at least 600 operations, DL3146 has the 5th highest on-time rate, 14.3 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 619 records of DL3146 operating ATL → MSY, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed