Flight number record
DL 2188
Delta Air Lines · Detroit to Atlanta
- Route
- DTW → ATL
- Departs
- 12:25
- Flights
- 303
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2188, check with Delta Air Lines.
DL 2188 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 303 flights, with a median arrival 3 minutes late.
The national on-time rate over the same period is 77.3%, so DL 2188 runs 10 points behind the country as a whole. Across a thousand flights that is about 101 extra late arrivals.
Key figures
On time
67.2%
Arrivals under 15 minutes late, of 302 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
12.9%
National rate is 8.3%
These figures cover 303 flights between September 2025 and August 2026. Beyond the headline rate, 12.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 2188 flies
DL 2188 flies DTW to ATL without a single fixed slot. Its most common scheduled departure was 12:25, used on 57 of 303 flights, with 12:20 (51 flights) and 12:43 (35 flights) next.
- Departs 12:2557 flights18.8%
- Departs 12:2051 flights16.8%
- Departs 12:4335 flights11.6%
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 12:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2188 runs 11 points worse at 67.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2188 next to DTW to ATL
Every carrier on DTW to ATL combined arrived on time 78.9% of the time across 4,832 flights, so DL 2188 is 12 points behind it. Delta flew 3,780 flights on the same city pair under all its flight numbers, including this one, and those ran 81.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2188thin sample | 303 | 67.2% | 66 min | 0.00% | C+ |
| All Delta Air Lines on DTW–ATL | 3,780 | 81.2% | 68 min | 0.48% | B+ |
| All carriers on DTW–ATL | 4,832 | 78.9% | 75 min | 0.79% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2188 quarter by quarter
DL 2188 did not run the same all year. Its best quarter was Jul–Sep 2025 at 80.0% on time and its weakest Jul–Sep 2026 at 31.1%, a swing of 49 points on roughly 76 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 flights80.0%
- Oct–Dec 202591 flights73.6%
- Jan–Mar 202629 flights—
- Apr–Jun 202691 flights79.1%
- Jul–Sep 202662 flights31.1%
Scale runs 25% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2188 did best on Thursday at 79.1% on time and worst on Tuesday at 55.8%. Each day rests on about 43 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2188 runs when it is late
The 99 late arrivals split 35 under half an hour, 25 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early16 flights5.3%
- Within 15 min187 flights61.9%
- 15–29 min late35 flights11.6%
- 30–59 min late25 flights8.3%
- 1–2 hours late28 flights9.3%
- 2+ hours late11 flights3.6%
Scale runs 0% to 100%.
Share of 302 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 98 departures that left 15 minutes late or more, only 10 made it up before arrival. 11 flights left on time and still arrived late.
The worst days
Worst days for DL 2188
The latest arrival of the period was on 24 June 2026, 7 hours 31 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 |
|---|---|---|
| 24 June 2026 | 7 hours 31 minutes | Carrier |
| 4 October 2025 | 5 hours 1 minute | Carrier |
| 12 July 2026 | 4 hours 12 minutes | National Airspace System |
| 18 July 2026 | 3 hours 46 minutes | Late-arriving aircraft |
| 19 August 2026 | 3 hours 31 minutes | Carrier |
Delay causes
Why DL 2188 runs late
Carrier accounts for 55% of the 6,536 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 31%Late-arriving aircraft
- 12%National Airspace System
- 1%Extreme weather
- 0%Security
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,623 of the 6,536 delay minutes reported here. The split is drawn from 6,536 delay minutes reported on DL 2188.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
12.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 594 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.
The same number turns up on one other city pair in the data, including ATL to CMH (19), but none flew often enough under DL 2188 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to ATL only.
One caution: this is a thin sample. 303 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 2188
For a booking, DL 2188 is a flight to put a long connection behind. 12.9% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DTW to ATL, every carrier and departure
- ATL to DTW, the return direction
- Delta Air Lines 2856 on the same route86.5%
- Delta Air Lines 1611 on the same route87.2%
- Delta Air Lines 1467 on the same route76.2%
- Delta Air Lines 2375 on the same route91.2%
- Delta Air Lines 2053 on the same route72.4%
- Delta Air Lines 965 on the same route86.6%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- 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
- How often a connection fails at the major US hubs
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.