BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
BWI→SAN

Baltimore, MD (BWI) to San Diego, CA (SAN) flight delay odds

73.9% of 1,141 official scheduled BWI-to-SAN flights arrived on time; 14.4% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
73.9%arrived on time
14.4%30+ min late
1.4%cancelled
1,141scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.0%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+5.0 mincompleted flights

Which departure time was most reliable for BWI to SAN?

Among qualifying BWI-to-SAN departure window results, Early morning had the highest on-time rate: 86.5% of 347 flights. Afternoon was lowest at 61.8% across 275 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning34786.5%5.5%0.9%
Late morning15681.4%11.5%1.9%
Afternoon27561.8%23.3%0.7%
Evening33571.3%15.2%2.1%

Which weekday was most reliable for BWI to SAN?

Among qualifying BWI-to-SAN weekday results, Saturday had the highest on-time rate: 80.2% of 121 flights. Sunday was lowest at 66.2% across 157 flights.

DayFlightsOn time30+ minCancelled
Monday18373.2%14.8%2.7%
Tuesday16275.3%8.6%0.6%
Wednesday15773.2%14.6%0.6%
Thursday17875.3%15.2%0.0%
Friday18374.9%18.0%0.5%
Saturday12180.2%10.7%0.8%
Sunday15766.2%17.2%4.5%

Which airline was most reliable for BWI to SAN?

Only Southwest Airlines met the BWI-to-SAN airline threshold: 73.9% of 1,141 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,14173.9%14.4%1.4%

Which month was most reliable for BWI to SAN?

Among qualifying BWI-to-SAN month results, August 2025 had the highest on-time rate: 86.9% of 84 flights. June 2026 was lowest at 50.5% across 103 flights.

MonthFlightsOn time30+ minCancelled
July 20258864.8%20.5%5.7%
August 20258486.9%7.1%0.0%
September 20258280.5%11.0%0.0%
October 202510175.2%14.9%0.0%
November 20259786.6%6.2%1.0%
December 202510265.7%14.7%1.0%
January 20269078.9%12.2%4.4%
February 20268080.0%15.0%2.5%
March 202610578.1%8.6%2.9%
April 202610366.0%17.5%0.0%
May 202610678.3%14.2%0.0%
June 202610350.5%29.1%0.0%

What drove BWI to SAN delay minutes?

Airline was the largest recorded BWI-to-SAN delay category, accounting for 40.7% of 13,967 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.7%
Late aircraft32.3%
National airspace23.2%
Weather3.1%
Security0.6%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.