Historical on-time performance
Baltimore to Louisville
495 miData through Dec 2025Source: US DOT · BTS
Flights on BWI–SDF arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights
based on 888 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9035 minCancel2.4%Flights888
Why flights run late
Delay causes
- Airline35%
- Weather8%
- Air traffic (NAS)12%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BWI → SDF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 63% to 85% on time.
- Mornings85% on time · p90 20 min · 450 flights
- Middays85% on time · p90 20 min · 715 flights
- Evenings75% on time · p90 35 min · 389 flights
- Afternoons74% on time · p90 40 min · 367 flights
- Overnights63% on time · p90 65 min · 722 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 86% on time.
- Tuesdays86% on time · p90 20 min · 336 flights
- Wednesdays81% on time · p90 30 min · 338 flights
- Mondays78% on time · p90 30 min · 394 flights
- Thursdays76% on time · p90 35 min · 395 flights
- Fridays75% on time · p90 35 min · 398 flights
- Saturdays72% on time · p90 45 min · 338 flights
- Sundays67% on time · p90 50 min · 444 flights
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