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

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

70.3% of 1,086 official scheduled BWI-to-SFO flights arrived on time; 18.2% arrived at least 30 minutes late and 0.8% 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
70.3%arrived on time
18.2%30+ min late
0.8%cancelled
1,086scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.3%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+8.7 mincompleted flights

Which departure time was most reliable for BWI to SFO?

Among qualifying BWI-to-SFO departure window results, Early morning had the highest on-time rate: 86.4% of 383 flights. Evening was lowest at 55.5% across 445 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning38386.4%4.2%0.5%
Late morning15382.4%9.2%0.7%
Afternoon10557.1%32.4%0.0%
Evening44555.5%30.1%1.3%

Which weekday was most reliable for BWI to SFO?

Among qualifying BWI-to-SFO weekday results, Saturday had the highest on-time rate: 80.3% of 147 flights. Sunday was lowest at 65.8% across 161 flights.

DayFlightsOn time30+ minCancelled
Monday16468.3%20.7%0.6%
Tuesday14072.9%12.9%2.1%
Wednesday14267.6%21.1%0.0%
Thursday16570.3%20.0%0.0%
Friday16768.3%22.2%0.6%
Saturday14780.3%11.6%0.0%
Sunday16165.8%18.0%2.5%

Which airline was most reliable for BWI to SFO?

Among qualifying BWI-to-SFO airline results, United Airlines had the highest on-time rate: 77.4% of 721 flights. Southwest Airlines was lowest at 56.4% across 365 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines72177.4%12.9%0.8%
Southwest Airlines36556.4%28.8%0.8%

Which month was most reliable for BWI to SFO?

Among qualifying BWI-to-SFO month results, October 2025 had the highest on-time rate: 84.9% of 106 flights. June 2026 was lowest at 41.0% across 83 flights.

MonthFlightsOn time30+ minCancelled
July 202511571.3%17.4%0.9%
August 202510374.8%14.6%0.0%
September 20258575.3%14.1%0.0%
October 202510684.9%7.5%0.0%
November 20258081.2%11.2%0.0%
December 20258662.8%16.3%1.2%
January 20268777.0%12.6%4.6%
February 20267869.2%12.8%1.3%
March 20269080.0%12.2%2.2%
April 20268664.0%25.6%0.0%
May 20268757.5%31.0%0.0%
June 20268341.0%47.0%0.0%

What drove BWI to SFO delay minutes?

National airspace was the largest recorded BWI-to-SFO delay category, accounting for 34.2% of 17,508 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.3%
Late aircraft32.0%
National airspace34.2%
Weather6.5%
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.