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

San Francisco, CA (SFO) to Baltimore, MD (BWI) flight delay odds

80.1% of 1,085 official scheduled SFO-to-BWI flights arrived on time; 10.9% arrived at least 30 minutes late and 0.6% 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 SIGNALLower disruption
80.1%arrived on time
10.9%30+ min late
0.6%cancelled
1,085scheduled 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 late1.2%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival-0.2 mincompleted flights

Which departure time was most reliable for SFO to BWI?

Among qualifying SFO-to-BWI departure window results, Early morning had the highest on-time rate: 96.2% of 53 flights. Night was lowest at 76.5% across 688 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning5396.2%3.8%0.0%
Late morning29385.7%7.2%0.7%
Night68876.5%12.9%0.6%

Which weekday was most reliable for SFO to BWI?

Among qualifying SFO-to-BWI weekday results, Saturday had the highest on-time rate: 85.8% of 148 flights. Monday was lowest at 75.8% across 165 flights.

DayFlightsOn time30+ minCancelled
Monday16575.8%12.7%0.0%
Tuesday12684.1%10.3%0.8%
Wednesday15679.5%9.6%0.0%
Thursday16678.9%11.4%0.0%
Friday16078.1%9.4%0.6%
Saturday14885.8%8.1%1.4%
Sunday16479.9%14.0%1.2%

Which airline was most reliable for SFO to BWI?

Among qualifying SFO-to-BWI airline results, United Airlines had the highest on-time rate: 87.6% of 720 flights. Southwest Airlines was lowest at 65.2% across 365 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines72087.6%6.5%0.4%
Southwest Airlines36565.2%19.5%0.8%

Which month was most reliable for SFO to BWI?

Among qualifying SFO-to-BWI month results, March 2026 had the highest on-time rate: 92.2% of 90 flights. June 2026 was lowest at 66.3% across 83 flights.

MonthFlightsOn time30+ minCancelled
July 202511572.2%12.2%0.9%
August 202510174.3%15.8%0.0%
September 20258773.6%6.9%0.0%
October 202510588.6%7.6%0.0%
November 20258085.0%8.8%0.0%
December 20258778.2%10.3%0.0%
January 20268684.9%8.1%5.8%
February 20267884.6%6.4%0.0%
March 20269092.2%5.6%0.0%
April 20268684.9%10.5%0.0%
May 20268778.2%12.6%0.0%
June 20268366.3%25.3%0.0%

What drove SFO to BWI delay minutes?

Late aircraft was the largest recorded SFO-to-BWI delay category, accounting for 66.9% of 9,700 BTS-attributed delay minutes during July 2025–June 2026.

Airline21.2%
Late aircraft66.9%
National airspace10.5%
Weather1.3%
Security0.0%
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.