Historical on-time performance
Louisville to Baltimore
495 miData through May 2026Source: US DOT · BTS
Flights on SDF–BWI arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights
based on 890 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time84%Medianon timep9025 minCancel2.4%Flights890
Why flights run late
Delay causes
- Airline38%
- Weather0%
- Air traffic (NAS)27%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline10%
- Weather67%
- Air traffic (NAS)24%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 21 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SDF → BWI
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 94% on time.
- Mornings94% on time · p90 5 min · 1,112 flights
- Middays89% on time · p90 10 min · 502 flights
- Afternoons80% on time · p90 25 min · 419 flights
- Evenings67% on time · p90 50 min · 583 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 88% on time.
- Mondays88% on time · p90 10 min · 404 flights
- Wednesdays87% on time · p90 15 min · 335 flights
- Tuesdays86% on time · p90 20 min · 333 flights
- Saturdays85% on time · p90 20 min · 349 flights
- Thursdays84% on time · p90 25 min · 408 flights
- Fridays80% on time · p90 35 min · 412 flights
- Sundays80% on time · p90 30 min · 440 flights
Keep exploring