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

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

Historically, 80.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,085 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

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

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.