Numbers from Aug 2025 – Jul 2026 flight records · generated 1 October 2026
GateCast grades your connection from A to F on how likely you are to make it, using a year of real flight records. At Detroit, pairs of Delta flights scheduled 45–59 minutes apart were missed on 12% of the days they ran, Aug 2025 – Jul 2026; pairs 90–120 minutes apart, on 6%.
How often Delta connections here were missed
Every pair of Delta flights at Detroit (regional flights sold as Delta included), grouped by the scheduled time between them, and checked against what actually happened on each day both flights ran, Aug 2025 – Jul 2026.
"Missed" means the first flight was cancelled, or arrived too late to leave about 31 minutes to get off, reach the next gate and board before the doors close. That time is our estimate for Delta connections here: flight records don't say which passengers made their connection. Days when the second flight was cancelled aren't counted. Pairs scheduled less than 35 minutes apart are left out, because we can't tell which of those the airline would sell as a connection.
When Delta connections at Detroit go wrong
From the same flight records as the chart above, and with the same meaning of "missed".
How long a connection to look for
Delta connections of 60–89 minutes here were missed on 8% of days. No shorter connection time in the chart above was missed on fewer than 1 day in 10.
Time of day
Delta connections of 45–59 minutes at Detroit were missed on 9% of days when the first flight was due in before 10:00, and on 17% when it was due in at 18:00 or later.
| First flight due in | 35–44 min | 45–59 min | 60–89 min | 90–120 min |
|---|---|---|---|---|
| before 10:00 | 16% | 9% | 6% | 4% |
| 10:00–13:59 | 16% | 10% | 6% | 4% |
| 14:00–17:59 | 19% | 12% | 8% | 6% |
| 18:00 or later | 27% | 17% | 11% | 7% |
Share of days missed, by scheduled arrival time (Detroit local time) and scheduled time between the flights. "—": fewer than 500 days to go on.
Time of year
The month with the most missed Delta connections at Detroit was December 2025: 16% of days. The fewest was October 2025: 6%. The first flight was cancelled or diverted most often in January 2026, on 3.5% of days, against 0.1% in September 2025.
| Month | Days missed | First flight cancelled |
|---|---|---|
| Aug 2025 | 9% | 0.5% |
| Sep 2025 | 6% | 0.1% |
| Oct 2025 | 6% | 0.1% |
| Nov 2025 | 10% | 1.3% |
| Dec 2025 | 16% | 2.5% |
| Jan 2026 | 14% | 3.5% |
| Feb 2026 | 10% | 1.9% |
| Mar 2026 | 12% | 2.6% |
| Apr 2026 | 8% | 0.9% |
| May 2026 | 9% | 1.5% |
| Jun 2026 | 10% | 1.5% |
| Jul 2026 | 14% | 2.5% |
"First flight cancelled" includes flights diverted to another airport. "—": fewer than 500 days to go on.
The last flight of the day
Of Delta's scheduled flights leaving Detroit at 18:00 or later, 59 of 94 are its last flight of the day to that city: miss the connection and the next Delta flight there leaves the next day. Before 10:00 it is 3 of 97. Connections onto a last flight of the day were missed on 13% of days; connections with a later Delta flight to the same city, on 9%.
How late Delta flights into Detroit ran
Over 63,940 scheduled Delta flights into Detroit, Aug 2025 – Jul 2026, 17% arrived 15 or more minutes late and 7% an hour or more late. The typical flight arrived at the gate 10 minutes early. 1.5% were cancelled or diverted.
What decides a connection at Detroit
- At Detroit, Delta flies from the McNamara Terminal.Detroit Metro Airport, airline directory and transfer pages (metroairport.com), checked 24 September 2026
- To change to a flight at the Evans Terminal (Southwest, American, Alaska, Frontier, JetBlue, United, Sun Country and Avelo), you take the shuttle outside security and go through screening again.Detroit Metro Airport, airline directory and transfer pages (metroairport.com), checked 24 September 2026
- Almost all international arrivals at Detroit collect their checked bags, clear US customs, check them in again and go back through security before the next flight. On some routes, eligible connecting passengers skip the bag recheck but still go back through security: for example, Delta and Korean Air from Seoul (since April 2026, according to trade-press reports). Check with your airline. Flights that clear US preclearance before they leave are also an exception. It runs at 16 airports (ten in Canada, including Toronto, Montreal and Vancouver, plus Dublin, Shannon, Nassau, Bermuda, Aruba and Abu Dhabi), though not on every flight from them; a flight that clears it arrives at Detroit as a domestic flight. Your airline can tell you whether yours does.Trade-press reports of Delta and Korean Air remote baggage screening from Seoul, from 15 April 2026 (CAPA and others; GateCast fact-check, 1 October 2026); US Customs and Border Protection, help.cbp.gov article 1244; US Customs and Border Protection, Preclearance locations and hours (cbp.gov/travel/preclearance, last modified 24 June 2026); Aer Lingus, "US immigration and pre-clearance" (mediacentre.aerlingus.com: no preclearance on its late Dublin departures to New York and Boston), checked 1 October 2026
What real connections here look like
Real Delta connections at Detroit from last year's flights. Each is the typical case of its kind, not the worst we found. Schedules change, so these exact flights may not run on your date.
40 minutes between flights looks tight — but on 88% of the 141 days both flights ran, the first one got in with enough time for a typical connection here. Graded B.
Graded over the 141 days both flights ran, Aug 2025 – Jul 2026 · generated 1 October 2026 · local times
1h 24m looks like plenty of time. But the first flight arrived more than an hour late on 18% of the 106 days both flights ran, and the connection was missed on 21% of them. Graded D.
Graded over the 106 days both flights ran, Aug 2025 – Jul 2026 · generated 1 October 2026 · local times
4h 49m between flights looks like plenty of room. But this is the last Delta flight of the day from DTW to SFO: miss it, and there's no later one that day, however long the wait was. The first flight got in too late on 2 of the 74 days both flights ran. Graded C; with another Delta flight an hour later it would be B.
Graded over the 74 days both flights ran, Aug 2025 – Jul 2026 · generated 1 October 2026 · local times
These are two separate tickets, not one booking. If the first flight runs late and you miss the second, you're not owed a seat on it. Passengers typically paid $296* one way from DTW to BDL. Graded F. The connection itself is rarely missed: the grade comes from the arrival. On the days both flights ran, Delta 2989 reached BDL typically on time, 16% of days more than an hour late.
Graded over the 139 days both flights ran, Aug 2025 – Jul 2026 · generated 1 October 2026 · local times
Typical fare passengers paid, one way, per ticket, from the US DOT fare survey (Jul 2024–Jun 2025). Fare only; bags and seats extra. Today's price may be different.
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Questions
Is 45 minutes enough for Delta at Detroit?
Over Aug 2025 – Jul 2026, pairs of Delta flights at Detroit scheduled 45–59 minutes apart were missed on 12% of the days they ran (2,927 flight pairs). Your own two flights can be much better or worse than that, so check them rather than going on the minutes alone.
Is an hour enough for Delta at Detroit?
Over Aug 2025 – Jul 2026, pairs of Delta flights at Detroit scheduled 60–89 minutes apart were missed on 8% of the days they ran (4,139 flight pairs). Your own two flights can be much better or worse than that, so check them rather than going on the minutes alone.
Read the full Detroit connection guide →
- Detroit Metro Airport, airline directory and transfer pages (metroairport.com), checked 24 September 2026
- Trade-press reports of Delta and Korean Air remote baggage screening from Seoul, from 15 April 2026 (CAPA and others; GateCast fact-check, 1 October 2026); US Customs and Border Protection, help.cbp.gov article 1244; US Customs and Border Protection, Preclearance locations and hours (cbp.gov/travel/preclearance, last modified 24 June 2026); Aer Lingus, "US immigration and pre-clearance" (mediacentre.aerlingus.com: no preclearance on its late Dublin departures to New York and Boston), checked 1 October 2026
- Flight times, delays and cancellations: US Department of Transportation, Bureau of Transportation Statistics, On-Time Performance, Aug 2025 – Jul 2026
- Fares: US DOT fare survey (DB1B), Jul 2024-Jun 2025
Grades are estimates, not guarantees. Always check your airline's minimum connection time.
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