Best Time to Fly DTW to BWI: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
2,252 flights were scheduled from Detroit (DTW) to Baltimore (BWI) in the last 12 months, and 81.1% of those that flew arrived on time, 3.4 points above the US average of 77.6%.
Among 4 airlines, Spirit Airlines led with 84.1% on time and Frontier Airlines was last with 77.7%.
Over 24 months, Tuesday was the most reliable day (87% on time) and January the worst month (76%).
The cancellation rate was 1.4% (US average 1.8%).
DTW to BWI on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlines | 84.1% | 124 min | 0.0% | 88 |
| Delta Air Lines | 82.1% | 69 min | 1.6% | 1,219 |
| Southwest Airlines | 79.8% | 44 min | 1.2% | 776 |
| Frontier Airlines | 77.7% | 62 min | 1.8% | 169 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to BWI
On-time arrival % by scheduled departure hour (local time), 4,459 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.8% | 0.8% | 651 |
| 6am–7am | 92.9% | 0.7% | 141 |
| 7am–8am | 91.0% | 0.8% | 258 |
| 8am–9am | 72.2% | 0.8% | 127 |
| 9am–10am | 74.4% | 0.0% | 43 |
| 10am–11am | 88.3% | 0.6% | 629 |
| 11am–12pm | 84.2% | 0.0% | 38 |
| 12pm–1pm | 82.7% | 0.0% | 196 |
| 1pm–2pm | 76.4% | 0.0% | 111 |
| 2pm–3pm | 85.3% | 0.0% | 144 |
| 3pm–4pm | 76.3% | 1.3% | 782 |
| 4pm–5pm | 72.0% | 1.7% | 178 |
| 5pm–6pm | 61.6% | 2.4% | 164 |
| 6pm–7pm | 66.1% | 1.6% | 123 |
| 7pm–8pm | 64.9% | 9.8% | 41 |
| 8pm–9pm | Limited data | 27 | |
| 9pm–10pm | 79.3% | 1.8% | 744 |
| 10pm–11pm | 85.2% | 1.6% | 62 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DTW to BWI
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 74.4% | -9.8 pts | 0.0% | 78 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.5% | -11.7 pts | 1.2% | 162 |
| Summer peak (Jun 15 - Aug 15) | 76.0% | -8.2 pts | 2.0% | 853 |
| All other days | 84.2% | — | 0.9% | 3,366 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).