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Route Reliability

Baltimore → San Diego

BWI–SAN · 2,295 miles · Baltimore/Washington International Thurgood Marshall Airport to San Diego International Airport

79
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
5 min
Average arrival delay
1.4%
Cancelled
1,120
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 1,120 flights. No comparison to make.

What the data says

Morning-you made the right choice.

BWI–SAN flights departing between 6–9 AM arrived on time 89% of the time, versus 60% between 3–6 PM.

Sunday scaries are real for this one.

BWI–SAN flights arrived on time 85% of the time on Saturdays. On Sundays: 72%.

Flights on this route

The breakdown

On-time by weekday
  • Mon78%(173 flights)
  • Tue80%(156 flights)
  • Wed76%(152 flights)
  • Thu80%(171 flights)
  • Fri78%(178 flights)
  • Sat85%(116 flights)
  • Sun72%(152 flights)
On-time by departure window
  • 6–9 AM89%(339 flights)
  • 9 AM–12 PM86%(142 flights)
  • 12–3 PM72%(151 flights)
  • 3–6 PM60%(123 flights)
  • 6–9 PM75%(335 flights)
  • 9 PM–12 AM—(8 flights)
On-time trend by month
79%
May

Jun 71% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%82
July 202571%83
August 202587%84
September 202585%80
October 202576%100
November 202588%96
December 202568%100
January 202684%85
February 202682%78
March 202681%102
April 202668%103
May 202679%105

Same trip, other airports

Keep nerding

Based on 1,120 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.