Louisville (SDF) to Baltimore (BWI): On-Time Performance
Data through July 2026
When you fly SDF to BWI matters as much as anything else about the booking: the route swung from 95% on-time in January 2026 to just 68% in July 2024. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 62%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.9%
- Flights/day
- 2.4
- last 12 months
- Duration
- 1h 35m
- scheduled
- Distance
- 495 mi
Monthly on-time trend
Best time to fly from SDF to BWI
Aim for departures around 11 a.m. (96% on-time); avoid 8 p.m. departures (31%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 90% | 7 min |
| Tuesday | 87% | 10 min |
| Wednesday | 87% | 9 min |
| Thursday | 84% | 16 min |
| Friday | 80% | 11 min |
| Saturday | 87% | 9 min |
| Sunday | 80% | 10 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations32%
- National airspace system25%
- Weather1%
Frequently asked questions
- How often are flights from SDF to BWI delayed?
- 15% of SDF–BWI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- What is the best time of day to fly from SDF to BWI?
- Departures around 11 a.m. have the best record (96% on-time), while departures around 8 p.m. have the worst (31%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SDF to BWI?
- The scheduled SDF–BWI flight time averages 1h 35m over 495 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are SDF to BWI flights cancelled?
- 1.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from SDF to BWI?
- July 2024 was the roughest month in this dataset, with only 68% of arrivals on time. The best was January 2026 at 95%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,852 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.