Skip to content
WanderNerd
Check a flight

Route Reliability

Baltimore → Louisville

BWI–SDF · 495 miles · Baltimore/Washington International Thurgood Marshall Airport to Louisville Muhammad Ali International Airport

77
Usually Fine
WanderNerd Reliability Score
79%
Arrive within 15 minutes
6 min
Average arrival delay
2.6%
Cancelled
890
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 79% of the time across 890 flights. No comparison to make.

What the data says

Morning flights do better here.

BWI–SDF flights departing between 9 AM–12 PM arrived on time 88% of the time, versus 70% between 9 PM–12 AM.

Sunday scaries are real for this one.

BWI–SDF flights arrived on time 86% of the time on Wednesdays and just 71% on Sundays. That gap is worth planning around.

Recent months have been rougher.

BWI–SDF flights arrived on time 77% of the time over the last three months in the data, compared with 88% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon81%(133 flights)
  • Tue85%(107 flights)
  • Wed86%(107 flights)
  • Thu78%(132 flights)
  • Fri75%(133 flights)
  • Sat82%(115 flights)
  • Sun71%(140 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM88%(360 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM73%(152 flights)
  • 6–9 PM82%(93 flights)
  • 9 PM–12 AM70%(260 flights)
On-time trend by month
70%
May

Jun 73% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%81
July 202559%73
August 202580%79
September 202590%77
October 202579%95
November 202585%68
December 202582%65
January 202685%59
February 202696%55
March 202685%61
April 202676%74
May 202670%80

Same trip, other airports

Keep nerding

Based on 890 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.