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

Santa Ana, CA (SNA) to Chicago, IL (ORD) flight delay odds

74.6% of 2,212 official scheduled SNA-to-ORD flights arrived on time; 13.7% arrived at least 30 minutes late and 1.2% 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
74.6%arrived on time
13.7%30+ min late
1.2%cancelled
2,212scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.8%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted1.5%did not reach as scheduled
Average arrival+8.0 mincompleted flights

Which departure time was most reliable for SNA to ORD?

Among qualifying SNA-to-ORD departure window results, Early morning had the highest on-time rate: 86.2% of 676 flights. Afternoon was lowest at 64.0% across 759 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning67686.2%6.4%1.0%
Late morning77774.9%14.8%0.8%
Afternoon75964.0%19.1%1.8%

Which weekday was most reliable for SNA to ORD?

Among qualifying SNA-to-ORD weekday results, Tuesday had the highest on-time rate: 81.5% of 329 flights. Sunday was lowest at 61.6% across 276 flights.

DayFlightsOn time30+ minCancelled
Monday32970.2%17.6%1.5%
Tuesday32981.5%9.1%1.2%
Wednesday32078.8%12.2%0.9%
Thursday32474.7%13.3%1.2%
Friday32776.1%11.0%0.6%
Saturday30777.9%11.4%1.3%
Sunday27661.6%22.5%1.8%

Which airline was most reliable for SNA to ORD?

Among qualifying SNA-to-ORD airline results, United Airlines had the highest on-time rate: 77.5% of 1,040 flights. American Airlines was lowest at 72.1% across 1,172 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,17272.1%16.1%1.8%
United Airlines1,04077.5%11.0%0.6%

Which month was most reliable for SNA to ORD?

Among qualifying SNA-to-ORD month results, December 2025 had the highest on-time rate: 80.8% of 177 flights. March 2026 was lowest at 66.9% across 181 flights.

MonthFlightsOn time30+ minCancelled
July 202520571.7%15.6%1.0%
August 202520668.9%17.5%2.9%
September 202519080.5%11.1%0.0%
October 202520877.9%11.5%0.0%
November 202517372.8%14.5%4.0%
December 202517780.8%11.9%0.6%
January 202617672.7%13.1%2.3%
February 202616378.5%9.8%0.0%
March 202618166.9%20.4%1.7%
April 202617676.7%12.5%1.1%
May 202618180.1%9.4%0.0%
June 202617668.8%16.5%1.1%

What drove SNA to ORD delay minutes?

Late aircraft was the largest recorded SNA-to-ORD delay category, accounting for 35.5% of 37,757 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.4%
Late aircraft35.5%
National airspace34.2%
Weather5.8%
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.