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

Detroit, MI (DTW) to San Francisco, CA (SFO) flight delay odds

Historically, 67.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,799 flights.

HISTORICAL ROUTE SIGNALVariable
67.1%arrived on time
20.1%30+ min late
0.9%cancelled
1,799scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.1%all scheduled flights
120+ minutes late3.9%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+15.8 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 morning58971.3%15.6%0.8%
Afternoon64068.1%18.0%0.6%
Evening56261.2%27.2%1.2%

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
Monday26961.3%25.3%1.5%
Tuesday25376.7%9.5%0.8%
Wednesday25071.6%17.2%0.4%
Thursday26465.5%22.7%1.1%
Friday26463.3%25.4%0.8%
Saturday23069.1%19.1%0.4%
Sunday26963.2%20.4%1.1%

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
Delta Air Lines1,38866.0%20.6%0.8%
United Airlines41170.8%18.2%1.2%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202519070.5%16.8%1.6%
August 202516075.6%13.1%0.6%
September 202514593.8%2.8%0.0%
October 202515479.9%11.0%0.0%
November 202514670.5%21.2%0.7%
December 202514151.1%31.2%3.5%
January 202612663.5%23.8%0.0%
February 202611267.0%17.9%0.0%
March 202614568.3%16.6%2.1%
April 202614667.1%14.4%0.7%
May 202615658.3%25.6%0.0%
June 202617842.1%43.3%1.1%

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.

Airline37.2%
Late aircraft16.7%
National airspace40.4%
Weather5.4%
Security0.2%
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.