Flight number record
DL 2144
Delta Air Lines · Atlanta to Madison
- Route
- ATL → MSN
- Departs
- 21:32
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2144, check with Delta Air Lines.
DL 2144 lands a B, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 364 flights, with a median arrival 5 minutes early.
Set against the rest of the country, DL 2144's record is 4 points better than the US average of 77.3%. That gap is worth roughly 41 fewer late arrivals for every thousand flights.
Key figures
On time
81.4%
Arrivals under 15 minutes late, of 355 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
2.47%
National rate is 1.89%
1 hour+ late
5.1%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 5 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.
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Schedule
When DL 2144 flies
DL 2144 flies ATL to MSN without a single fixed slot. Its most common scheduled departure was 21:32, used on 84 of 364 flights, with 21:20 (41 flights) and 21:26 (38 flights) next.
- Departs 21:3284 flights23.1%
- Departs 21:2041 flights11.3%
- Departs 21:2638 flights10.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 21:32 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2144 runs 11 points better at 81.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 2144 next to ATL to MSN
Every carrier on ATL to MSN combined arrived on time 83.5% of the time across 1,029 flights, so DL 2144 is 2 points behind it. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2144thin sample | 364 | 81.4% | 71 min | 2.47% | B |
| All Delta Air Lines on ATL–MSN | 1,029 | 83.5% | 56 min | 2.14% | B |
| All carriers on ATL–MSN | 1,029 | 83.5% | 56 min | 2.14% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2144 quarter by quarter
DL 2144 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 60.3%, a swing of 30 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202592 flights89.0%
- Jan–Mar 202690 flights80.7%
- Apr–Jun 202691 flights85.2%
- Jul–Sep 202661 flights60.3%
Scale runs 50% to 95%.
By weekday, DL 2144 did best on Wednesday at 90.2% on time and worst on Friday at 70.0%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2144 runs when it is late
The 66 late arrivals split 24 under half an hour, 24 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early68 flights19.2%
- Within 15 min221 flights62.3%
- 15–29 min late24 flights6.8%
- 30–59 min late24 flights6.8%
- 1–2 hours late13 flights3.7%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 355 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 66 departures that left 15 minutes late or more, only 7 made it up before arrival. Only 7 left on time and still arrived late.
The worst days
Worst days for DL 2144
The latest arrival of the period was on 2 December 2025, 12 hours 4 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 December 2025 | 12 hours 4 minutes | Carrier |
| 16 July 2026 | 11 hours 28 minutes | Carrier |
| 6 March 2026 | 4 hours 26 minutes | Extreme weather |
| 26 June 2026 | 2 hours 25 minutes | Carrier |
| 11 August 2026 | 2 hours 14 minutes | Late-arriving aircraft |
Delay causes
Why DL 2144 runs late
Carrier accounts for 61% of the 4,693 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 22%Late-arriving aircraft
- 10%Extreme weather
- 7%National Airspace System
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,869 of the 4,693 delay minutes reported here. The split is drawn from 4,693 delay minutes reported on DL 2144.
Cancellations sit at 2.47% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 707 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
Every one of the 364 flights under DL 2144 in the data flew ATL to MSN. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 364 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.
What to do with this
Booking DL 2144
For a booking, read DL 2144 as 81.4% on time with 2.47% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to MSN, every carrier and departure
- MSN to ATL, the return direction
- Delta Air Lines 2681 on the same route86.0%
- Delta Air Lines 2599 on the same route83.0%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.