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

Chicago, IL (ORD) to San Antonio, TX (SAT) flight delay odds

Historically, 72.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,966 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
72.8%arrived on time
18.0%30+ min late
2.0%cancelled
1,966scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+8.2 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 morning12892.2%5.5%0.8%
Late morning56680.2%12.4%1.1%
Afternoon59273.3%17.7%1.9%
Evening63664.8%23.7%3.0%
Night4431.8%45.5%6.8%

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
Monday30473.0%18.4%1.0%
Tuesday27379.5%14.7%1.1%
Wednesday26472.0%20.5%0.8%
Thursday29674.7%15.9%3.0%
Friday29572.9%19.7%1.7%
Saturday23669.9%17.4%3.0%
Sunday29867.8%19.1%3.7%

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 Airlines83374.7%17.4%1.1%
American Airlines54867.0%23.0%2.6%
Envoy Air35274.1%15.9%2.6%
SkyWest Airlines13278.0%10.6%3.0%
Republic Airways10178.2%11.9%4.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202516766.5%22.8%3.0%
August 202515572.3%18.7%3.2%
September 202515178.1%15.2%0.7%
October 202517983.8%10.6%0.0%
November 202516080.0%11.9%4.4%
December 202516073.8%18.1%1.2%
January 202614367.8%18.9%2.8%
February 202614481.9%7.6%0.0%
March 202617971.5%20.1%3.4%
April 202617566.3%20.6%2.3%
May 202617969.3%24.6%0.6%
June 202617464.4%24.1%2.9%

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.

Airline27.1%
Late aircraft48.8%
National airspace16.7%
Weather7.2%
Security0.1%
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.