FlightRecord

Louisville (SDF) to Baltimore (BWI): On-Time Performance

Data through May 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 (94% vs 62%), which matters most in the rough months.

On-time
85%
arrived <15 min late
Avg delay
10 min
completed flights
Cancelled
1.8%
Flights/day
2.4
last 12 months
Duration
1h 35m
scheduled
Distance
495 mi

Monthly on-time trend

Monthly on-time percentage for SDF to BWI flights50%75%100%June 2024: 81% on-time (80 flights)81Jun 2024July 2024: 68% on-time (80 flights)68August 2024: 83% on-time (81 flights)83September 2024: 88% on-time (77 flights)88Sep 2024October 2024: 89% on-time (86 flights)89November 2024: 92% on-time (74 flights)92December 2024: 85% on-time (67 flights)85Dec 2024January 2025: 86% on-time (63 flights)86February 2025: 84% on-time (56 flights)84March 2025: 89% on-time (62 flights)89Mar 2025April 2025: 86% on-time (72 flights)86May 2025: 85% on-time (80 flights)85June 2025: 81% on-time (82 flights)81Jun 2025July 2025: 72% on-time (81 flights)72August 2025: 86% on-time (80 flights)86September 2025: 87% on-time (77 flights)87Sep 2025October 2025: 86% on-time (95 flights)86November 2025: 91% on-time (74 flights)91December 2025: 86% on-time (66 flights)86Dec 2025January 2026: 95% on-time (63 flights)95February 2026: 94% on-time (56 flights)94March 2026: 82% on-time (62 flights)82Mar 2026April 2026: 84% on-time (74 flights)84May 2026: 90% on-time (80 flights)90

Best time to fly from SDF to BWI

Aim for departures around 5 a.m. (96% on-time); avoid 8 p.m. departures (44%).

On-time percentage by scheduled departure hour, SDF to BWI5 a.m.: 96% on-time (389 flights)56 a.m.: 95% on-time (258 flights)68 a.m.: 90% on-time (69 flights)810 a.m.: 89% on-time (103 flights)1011 a.m.: 96% on-time (90 flights)1112 p.m.: 87% on-time (93 flights)121 p.m.: 91% on-time (24 flights)132 p.m.: 90% on-time (29 flights)143 p.m.: 82% on-time (156 flights)154 p.m.: 80% on-time (209 flights)165 p.m.: 69% on-time (146 flights)176 p.m.: 64% on-time (63 flights)187 p.m.: 56% on-time (62 flights)198 p.m.: 44% on-time (46 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Mondaybest91%7 min
Tuesday88%8 min
Wednesday86%10 min
Thursday84%16 min
Friday79%12 min
Saturday88%9 min
Sunday82%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 aircraft45%
  • Airline operations31%
  • National airspace system24%

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 2024-06 and 2026-05. 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 5 a.m. have the best record (96% on-time), while departures around 8 p.m. have the worst (44%). 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?
1.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 1,768 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.