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

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

78.0% of 1,142 official scheduled SAN-to-BWI flights arrived on time; 11.1% arrived at least 30 minutes late and 1.5% 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
78.0%arrived on time
11.1%30+ min late
1.5%cancelled
1,142scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.2%all scheduled flights
120+ minutes late1.1%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+2.0 mincompleted flights

Which departure time was most reliable for SAN to BWI?

Among qualifying SAN-to-BWI departure window results, Early morning had the highest on-time rate: 89.0% of 336 flights. Afternoon was lowest at 57.1% across 296 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning33689.0%4.2%1.8%
Late morning14571.7%10.3%2.1%
Afternoon29657.1%26.0%1.4%
Night33088.2%5.5%1.2%

Which weekday was most reliable for SAN to BWI?

Among qualifying SAN-to-BWI weekday results, Saturday had the highest on-time rate: 90.1% of 121 flights. Thursday was lowest at 71.5% across 179 flights.

DayFlightsOn time30+ minCancelled
Monday18374.9%14.8%2.7%
Tuesday16284.0%8.6%0.0%
Wednesday15777.7%8.3%1.9%
Thursday17971.5%15.6%0.6%
Friday18379.2%8.7%1.6%
Saturday12190.1%4.1%0.8%
Sunday15772.6%15.3%2.5%

Which airline was most reliable for SAN to BWI?

Only Southwest Airlines met the SAN-to-BWI airline threshold: 78.0% of 1,142 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,14278.0%11.1%1.5%

Which month was most reliable for SAN to BWI?

Among qualifying SAN-to-BWI month results, September 2025 had the highest on-time rate: 89.0% of 82 flights. June 2026 was lowest at 62.1% across 103 flights.

MonthFlightsOn time30+ minCancelled
July 20258872.7%14.8%0.0%
August 20258479.8%11.9%0.0%
September 20258289.0%6.1%1.2%
October 202510185.1%5.0%0.0%
November 20259785.6%11.3%1.0%
December 202510281.4%7.8%4.9%
January 20269186.8%4.4%3.3%
February 20268082.5%7.5%1.2%
March 202610569.5%19.0%2.9%
April 202610370.9%10.7%0.0%
May 202610675.5%12.3%0.9%
June 202610362.1%20.4%1.9%

What drove SAN to BWI delay minutes?

Late aircraft was the largest recorded SAN-to-BWI delay category, accounting for 52.3% of 10,863 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.3%
Late aircraft52.3%
National airspace18.0%
Weather0.5%
Security0.9%
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.