DL1237Delta Air Lines · FSD → ATL
live · 21m ago
Route confirmed Delta Air Lines

DL1237 Sioux FallsFSD · 05:30 AtlantaATL · 09:00

DL1237 by Delta Air Lines flies from Sioux Falls (FSD) to Atlanta (ATL) for the Thu, Oct 29 departure.

Right nowLanded in Atlanta · today
08:47

arrived at ATL · 13 min early

⚖ DL1237 typically leaves +7 and lands −27. The air wins minutes back.
Typical gate push+7 minmedian posted departure
Typical arrival−27 minmedian over 15 operations
Wins back in air~34 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 15tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-29
+19 gate · −13 arrival
10-28
−3 gate · −32 arrival
10-27
−2 gate · −28 arrival
10-26
+10 gate · −15 arrival
10-25
+12 gate · −22 arrival
10-24
+8 gate · −26 arrival
10-23
+0 gate · −31 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −27 min · 0 cancelled · 15 operations tracked

The route today

live boards
FSDSioux FallsModerate riskFSD delay board →
ATLAtlantaOn-time likelyATL delay board →
FSD→ATLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
42%Chance of 15+ min delay
2.1%Chance of cancellation
+11 minTypical airport delay in this weather

Driven mainly by FSD (Sioux Falls), currently flying VFR (visual). These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow on this route

Forecast

Sioux Falls to Atlanta with Delta Air Lines · Fri 30 Oct, local date

Outlook: about usual
Chance a departure leaves 60+ min late
7.2%1.2× usual

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 1 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How DL1237 actually runs

Pro Flight Search has tracked every published board update for DL1237 across the FSD and ATL boards: schedule changes, gate pushes and actual clocks. Usually lands ~22 min early. Based on 13 confirmed landings · 13/13 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how DL1237 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-29FSD 05:30 05:49 (+19)ATL 09:00 08:47 (−13)
10-28FSD 05:30 05:27 (−3)ATL 09:00 08:28 (−32)
10-27FSD 05:30 05:28 (−2)ATL 09:00 08:32 (−28)
10-26FSD 05:30 05:40 (+10)ATL 09:00 08:45 (−15)
10-25FSD 05:30 05:42 (+12)ATL 09:00 08:38 (−22)
10-24FSD 05:30 05:38 (+8)ATL 09:00 08:34 (−26)
10-23FSD 05:30 (+0)ATL 09:00 08:29 (−31)
10-22FSD 05:30 05:37 (+7)ATL 09:00 08:32 (−28)
10-21FSD 05:30 05:37 (+7)ATL 09:00 08:31 (−29)
10-20FSD 05:30 05:44 (+14)ATL 09:00 08:27 (−33)
10-19FSD 05:30 05:36 (+6)ATL 09:00 08:33 (−27)
10-18FSD 05:30 05:56 (+26)ATL 09:00 08:56 (−4)
10-17FSD 05:30 (+0)ATL 09:00 08:24 (−36)
10-16FSD 05:30 05:33 (+3)ATL 09:00 08:39 (−21)
10-15FSD 05:30 05:37 (+7)ATL 09:00 08:36 (−24)

Aircraft

Recent tails: N328NB, N351NB, N319NB, N349NB.

Board clocks recorded as FSD and ATL published them.

Planning around DL1237? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: DL1237 Sioux Falls to Atlanta on-time performance, measured from the FSD and ATL airport boards.

Canonical URL
https://proflightsearch.com/flight/DL1237
How we measure this →