Flight profile · Delta Air Lines
DL1757
Atlanta (ATL) to San Juan (SJU) · scheduled 8:10 AM – 11:40 AM
How DL1757 performs
628 operations, April 2024 – August 2026.
Between its first and last recorded date on ATL → SJU, DL1757 averaged about 5 operations a week (628 in 875 days, cancelled ones included).
DL1757 arrived on time 88.0% of the time, against 75.0% for all ATL → SJU flights, so this departure is 13.0 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 9.1 points better.
Source: US DOT Bureau of Transportation Statistics · 628 operations, April 2024 – August 2026 · If DL1757 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How DL1757 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the ATL → SJU route as a whole, better than 95% of 12,358 comparable flight numbers.
88.0% on time for this specific departure, against 75.0% for every ATL → SJU flight.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where DL1757 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL1757 | 88.0% | 0.64% | -3 min | 1.8% | 628 |
| Delta Air Lines on ATL → SJU | 78.9% | 0.53% | -2 min | 5.8% | 5,127 |
| All ATL → SJU flights | 75.0% | 0.80% | -1 min | 7.7% | 6,774 |
DL1757 cancelled 4 of 628 operations (0.64%), close to the 0.80% for ATL → SJU.
1.8% of DL1757’s arrivals were an hour or more late, against 7.7% across ATL → SJU, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026
Why DL1757 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL1757 on ATL → SJU. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering April 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies DL1757 comes in late, and what that does to the departure.
The aircraft flying DL1757 came in 15 or more minutes late on 11% 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: 507 of 624 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 |
|---|---|
| DL1757 | 11% |
| Network, same turn | 23% |
A long gap on the ground gives a late aircraft room to catch up before this flight pushes back.
The network row is every flight with a scheduled turn of 90 minutes to 3 hours. How often DL1757’s aircraft landed 15 or more minutes late is lower than 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 April 2024 – August 2026
From pushback to gate
When it leaves ATL late, does that still matter by the time it reaches SJU?
On arrival at SJU, DL1757 spends 4.6 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 1.6 minutes shorter than a typical SJU arrival (6.2 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 81,885 ATL departures. Taxi-in is landing to gate, set against 112,603 arrivals at SJU. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026
The hour it leaves ATL
DL1757 has one departure time, 8:10 AM, so this is what that hour at ATL is worth.
On-time arrival rate. 81,885 departures from ATL are scheduled in the 8 AM–9 AM hour over the period, against 1,039,468 across the whole day.
DL1757 is scheduled out of ATL at 8:10 AM, in the 8 AM–9 AM bank. Departures from ATL in that hour arrive on time 88.1% of the time against 78.6% across the airport’s whole day — the slot alone is worth 9.5 points better 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 · April 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes DL1757 has flown
Carriers reassign flight numbers. DL1757 also served these 3 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SJU→ATL San Juan to Atlanta | April 9, 2024 – August 31, 2026 | 590 | 88.1% |
| RIC→ATL Richmond to Atlanta | October 9, 2023 – November 4, 2023 | 21 | — |
| MSP→DEN Minneapolis to Denver | July 1, 2023 – September 4, 2023 | 66 | — |
The figures above describe only ATL → SJU, the route DL1757 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
18 min late
against a median of 3 min early
Percentiles over 628 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering April 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 |
|---|---|---|---|---|
| DL1757 this flight | Delta Air Lines | 88.0% | 3 min early | 628 |
| DL1946 | Delta Air Lines | 82.9% | 3 min early | 1,095 |
| DL1882 | Delta Air Lines | 78.5% | 1 min late | 1,097 |
| DL1861 | Delta Air Lines | 69.5% | 0 min early | 1,097 |
| F92082 | Frontier Airlines | 56.6% | 10 min late | 648 |
Among all 5 departures on this route with at least 600 operations, DL1757 has the highest on-time rate. 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 628 records of DL1757 operating ATL → SJU, 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