Flight profile · Delta Air Lines
DL2321
New York (LGA) to Fort Lauderdale (FLL) · scheduled 3:35 PM – 6:54 PM
How DL2321 performs
617 operations, June 2024 – August 2026.
Between its first and last recorded date on LGA → FLL, DL2321 averaged about 5 operations a week (617 in 816 days, cancelled ones included).
DL2321 arrived on time 66.2% of the time, against 72.3% for all LGA → FLL flights, so this departure is 6.1 percentage points worse than the route as a whole. Against Delta Air Lines’ own flights on this route it is 9.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 617 operations, June 2024 – August 2026 · If DL2321 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL2321 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 |
|---|---|---|---|---|---|
| DL2321 | 66.2% | 2.59% | 1 min | 12.0% | 617 |
| Delta Air Lines on LGA → FLL | 75.5% | 2.46% | -8 min | 9.3% | 5,089 |
| All LGA → FLL flights | 72.3% | 2.89% | -6 min | 11.8% | 14,424 |
DL2321 cancelled 16 of 617 operations (2.59%), close to the 2.89% for LGA → FLL.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
Why DL2321 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL2321 on LGA → FLL. 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 DL2321 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, DL2321 pushed back an average of 51 minutes late; when it came in on time or early, an average of 5 minutes late.
Matched by tail number to the aircraft’s previous flight into LGA: 581 of 601 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 | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| DL2321 | 23% | 80% | 16% |
| Network, same turn | 17% | 69% | 9% |
67 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 DL2321’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often DL2321 left 15 or more minutes late is higher than the network’s.
Which Flight Numbers Pay for a Late Aircraft ranks the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
From pushback to gate
When it leaves LGA late, does that still matter by the time it reaches FLL?
DL2321 pushes back an average of 18.0 minutes late and reaches the gate at FLL an average of 12.4 minutes late. The 5.6 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. Its 28.7 minutes on the taxiways at LGA is about what any departure from the airport in that hour spends.
On arrival at FLL, DL2321 spends 8.2 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 about what any arrival at FLL spends on the ground before reaching the gate.
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 33,016 LGA departures. Taxi-in is landing to gate, set against 285,735 arrivals at FLL. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
The hour it leaves LGA
DL2321 has one departure time, 3:35 PM, so this is what that hour at LGA is worth.
On-time arrival rate. 33,016 departures from LGA are scheduled in the 3 PM–4 PM hour over the period, against 467,462 across the whole day.
DL2321 is scheduled out of LGA at 3:35 PM, in the 3 PM–4 PM bank. Departures from LGA in that hour arrive on time 70.7% of the time against 78.1% across the airport’s whole day — the slot alone is worth 7.3 points worse before anything about this particular flight is considered.
Both airport figures cover every destination from LGA, 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 DL2321 has flown
Carriers reassign flight numbers. DL2321 also served these 17 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| FLL→LGA Fort Lauderdale to New York | June 7, 2024 – August 31, 2026 | 390 | 64.1% |
| LGA→MIA New York to Miami | November 9, 2025 – December 19, 2025 | 39 | — |
| MIA→LGA Miami to New York | November 9, 2025 – December 19, 2025 | 39 | — |
| AGS→ATL Augusta to Atlanta | June 8, 2025 – August 10, 2025 | 64 | — |
| ATL→AGS Atlanta to Augusta | June 8, 2025 – August 10, 2025 | 64 | — |
| DEN→SEA Denver to Seattle | May 7, 2024 – June 6, 2024 | 31 | — |
| SEA→DEN Seattle to Denver | May 7, 2024 – June 6, 2024 | 31 | — |
| SEA→SFO Seattle to San Francisco | April 9, 2024 – May 6, 2024 | 28 | — |
| SFO→SEA San Francisco to Seattle | April 9, 2024 – May 6, 2024 | 28 | — |
| ATL→ILM Atlanta to Wilmington | March 10, 2024 – April 8, 2024 | 30 | — |
| ILM→ATL Wilmington to Atlanta | March 10, 2024 – April 8, 2024 | 30 | — |
| DTW→MSY Detroit to New Orleans | January 8, 2024 – March 9, 2024 | 54 | — |
| MSY→DTW New Orleans to Detroit | January 8, 2024 – March 9, 2024 | 54 | — |
| ATL→HOU Atlanta to Houston | January 9, 2024 | 1 | — |
| HOU→ATL Houston to Atlanta | January 9, 2024 | 1 | — |
| RDU→DTW Raleigh–Durham to Detroit | July 1, 2023 – January 7, 2024 | 189 | 85.2% |
| DTW→RDU Detroit to Raleigh–Durham | July 1, 2023 – January 7, 2024 | 186 | 87.1% |
The figures above describe only LGA → FLL, the route DL2321 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
69 min late
against a median of 1 min late
DL2321 has an average that understates its risk: a typical arrival is 1 min late, but the worst tenth are 69 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 617 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 |
|---|---|---|---|---|
| NK171 | Spirit Airlines | 90.3% | 17 min early | 613 |
| B61471 | JetBlue | 82.3% | 7 min early | 668 |
| B6271 | JetBlue | 75.0% | 7 min early | 658 |
| B61371 | JetBlue | 71.3% | 4 min early | 1,093 |
| DL2321 this flight | Delta Air Lines | 66.2% | 1 min late | 617 |
| DL2308 | Delta Air Lines | 65.4% | 2 min early | 732 |
| B6371 | JetBlue | 62.6% | 1 min late | 689 |
| B6571 | JetBlue | 56.5% | 5 min late | 693 |
| B6471 | JetBlue | 55.9% | 9 min late | 942 |
Among the 9 departures listed, DL2321 has the 5th highest on-time rate, 24.1 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 617 records of DL2321 operating LGA → FLL, 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