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

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

Historically, 67.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,198 flights.

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

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 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%

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
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%

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 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%

Monthly trend

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

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 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.

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.