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

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

67.9% of 3,198 official scheduled ORD-to-SLC flights arrived on time; 21.0% 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 SIGNALVariable
67.9%arrived on time
21.0%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 late11.9%all scheduled flights
120+ minutes late5.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+20.1 mincompleted flights

Which departure time was most reliable for ORD to SLC?

Among qualifying ORD-to-SLC departure window results, Early morning had the highest on-time rate: 80.1% of 537 flights. Night was lowest at 52.9% across 70 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning53780.1%12.5%0.7%
Late morning65769.3%18.1%0.9%
Afternoon1,01570.8%20.1%0.5%
Evening91957.7%28.4%1.8%
Night7052.9%28.6%7.1%

Which weekday was most reliable for ORD to SLC?

Among qualifying ORD-to-SLC weekday results, Tuesday had the highest on-time rate: 75.8% of 454 flights. Sunday was lowest at 62.4% across 471 flights.

DayFlightsOn time30+ minCancelled
Monday47964.3%22.8%1.9%
Tuesday45475.8%16.7%0.9%
Wednesday43567.1%21.8%1.1%
Thursday47066.8%21.5%1.1%
Friday47067.0%20.6%1.1%
Saturday41972.6%17.9%1.2%
Sunday47162.4%25.1%0.8%

Which airline was most reliable for ORD to SLC?

Among qualifying ORD-to-SLC airline results, Delta Air Lines had the highest on-time rate: 71.0% of 1,011 flights. SkyWest Airlines was lowest at 55.8% across 113 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,06971.0%17.3%0.8%
Delta Air Lines1,01171.0%18.1%0.8%
American Airlines96962.8%25.8%2.0%
SkyWest Airlines11355.8%38.9%0.9%
Envoy Air3661.1%25.0%0.0%

Which month was most reliable for ORD to SLC?

Among qualifying ORD-to-SLC month results, September 2025 had the highest on-time rate: 78.7% of 244 flights. December 2025 was lowest at 55.2% across 241 flights.

MonthFlightsOn time30+ minCancelled
July 202526960.2%29.7%0.4%
August 202526068.5%19.2%1.9%
September 202524478.7%15.2%0.4%
October 202526571.3%15.5%0.4%
November 202524070.4%20.4%2.5%
December 202524155.2%27.4%0.8%
January 202623866.0%22.3%0.8%
February 202628474.3%13.7%0.7%
March 202631663.0%25.6%2.2%
April 202626769.7%19.9%1.5%
May 202628471.8%18.0%0.4%
June 202629065.9%24.5%1.7%

What drove ORD to SLC delay minutes?

Late aircraft was the largest recorded ORD-to-SLC delay category, accounting for 38.5% of 77,183 BTS-attributed delay minutes during July 2025–June 2026.

Airline36.5%
Late aircraft38.5%
National airspace14.8%
Weather10.0%
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.