DL1240: Atlanta to Detroit
Delta Air Lines flight DL1240 flies from Atlanta (ATL) to Detroit (DTW), 958 km. Over August 2025 to July 2026 it usually arrives about 4 minutes late: 83% of 365 flights arrived within 15 minutes of schedule and 0.3% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of DL1240, August 2025 to July 2026: 365 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as DL1240
- Atlanta (ATL) to Detroit (DTW)365 flights
Other flights from Atlanta to Detroit
More about Atlanta (ATL) and Detroit (DTW).
Questions and answers
- Is DL1240 usually on time?
- 83% of Delta Air Lines flight DL1240's 365 flights from August 2025 to July 2026 arrived within 15 minutes of schedule, 5.1 points above the US average of 77.6%. It arrived about 4 minutes late on average.
- How often is DL1240 cancelled or badly delayed?
- 0.3% of DL1240's scheduled flights were cancelled from August 2025 to July 2026 (1 of 365), and 9% of the flights that operated arrived more than 30 minutes late.
- What route does DL1240 fly?
- DL1240 most often flies from Atlanta (ATL) to Detroit (DTW), 958 km (365 flights in the period).
- Where do these DL1240 figures come from?
- From the US Bureau of Transportation Statistics (BTS) on-time records, which cover every domestic flight by the larger US airlines. The figures cover August 2025 to July 2026 and are updated each month when new BTS data is published, about two months after the month ends. See how TripStow measures punctuality.
How does Delta Air Lines compare? Delta Air Lines' on-time record and the US airline league table.
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