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

Salt Lake City, UT (SLC) to Chicago, IL (ORD) flight delay odds

73.9% of 3,198 official scheduled SLC-to-ORD flights arrived on time; 16.4% 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
73.9%arrived on time
16.4%30+ min late
1.2%cancelled
3,198scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.7%all scheduled flights
120+ minutes late4.6%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+13.7 mincompleted flights

Which departure time was most reliable for SLC to ORD?

Among qualifying SLC-to-ORD departure window results, Early morning had the highest on-time rate: 86.9% of 1,119 flights. Afternoon was lowest at 66.2% across 1,492 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,11986.9%7.4%0.9%
Late morning6080.0%13.3%1.7%
Afternoon1,49266.2%21.9%1.1%
Evening52767.2%20.5%2.1%

Which weekday was most reliable for SLC to ORD?

Among qualifying SLC-to-ORD weekday results, Tuesday had the highest on-time rate: 78.8% of 453 flights. Monday was lowest at 70.4% across 477 flights.

DayFlightsOn time30+ minCancelled
Monday47770.4%18.4%1.7%
Tuesday45378.8%12.4%0.7%
Wednesday43873.7%17.8%1.1%
Thursday47074.3%15.5%1.3%
Friday46972.1%17.5%1.3%
Saturday41976.4%13.6%1.4%
Sunday47271.8%19.5%1.1%

Which airline was most reliable for SLC to ORD?

Among qualifying SLC-to-ORD airline results, SkyWest Airlines had the highest on-time rate: 75.7% of 115 flights. Envoy Air was lowest at 61.1% across 36 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,06974.1%15.6%1.1%
Delta Air Lines1,01075.5%15.0%0.7%
American Airlines96872.1%18.6%1.9%
SkyWest Airlines11575.7%17.4%1.7%
Envoy Air3661.1%19.4%0.0%

Which month was most reliable for SLC to ORD?

Among qualifying SLC-to-ORD month results, February 2026 had the highest on-time rate: 83.1% of 284 flights. July 2025 was lowest at 65.4% across 269 flights.

MonthFlightsOn time30+ minCancelled
July 202526965.4%23.0%0.4%
August 202526073.5%15.4%1.9%
September 202524481.1%12.7%0.4%
October 202526579.2%12.5%0.4%
November 202524074.2%19.2%2.9%
December 202524168.9%19.1%0.4%
January 202623770.9%19.4%1.3%
February 202628483.1%9.2%0.4%
March 202631767.8%21.5%2.2%
April 202626773.4%13.1%1.5%
May 202628376.3%15.9%0.4%
June 202629172.9%16.5%2.4%

What drove SLC to ORD delay minutes?

National airspace was the largest recorded SLC-to-ORD delay category, accounting for 37.7% of 69,406 BTS-attributed delay minutes during July 2025–June 2026.

Airline31.2%
Late aircraft25.7%
National airspace37.7%
Weather5.4%
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.