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

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

82.7% of 618 official scheduled SLC-to-MDW flights arrived on time; 6.8% arrived at least 30 minutes late and 0.8% 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 SIGNALLower disruption
82.7%arrived on time
6.8%30+ min late
0.8%cancelled
618scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late1.5%all scheduled flights
120+ minutes late0.2%all scheduled flights
Diverted1.0%did not reach as scheduled
Average arrival-3.3 mincompleted flights

Which departure time was most reliable for SLC to MDW?

Among qualifying SLC-to-MDW departure window results, Early morning had the highest on-time rate: 93.5% of 353 flights. Afternoon was lowest at 67.8% across 255 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35393.5%2.0%0.8%
Afternoon25567.8%13.7%0.8%

Which weekday was most reliable for SLC to MDW?

Among qualifying SLC-to-MDW weekday results, Wednesday had the highest on-time rate: 88.5% of 87 flights. Monday was lowest at 76.6% across 94 flights.

DayFlightsOn time30+ minCancelled
Monday9476.6%8.5%3.2%
Tuesday9278.3%9.8%0.0%
Wednesday8788.5%1.1%0.0%
Thursday9282.6%7.6%1.1%
Friday9384.9%6.5%0.0%
Saturday7081.4%7.1%0.0%
Sunday9086.7%6.7%1.1%

Which airline was most reliable for SLC to MDW?

Only Southwest Airlines met the SLC-to-MDW airline threshold: 82.7% of 618 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines61882.7%6.8%0.8%

Which month was most reliable for SLC to MDW?

Among qualifying SLC-to-MDW month results, February 2026 had the highest on-time rate: 100.0% of 46 flights. May 2026 was lowest at 69.6% across 56 flights.

MonthFlightsOn time30+ minCancelled
July 20255787.7%7.0%1.8%
August 20255787.7%7.0%0.0%
September 20255689.3%5.4%0.0%
October 20255784.2%5.3%0.0%
November 20253582.9%5.7%2.9%
December 20254283.3%4.8%0.0%
January 20263994.9%2.6%0.0%
February 202646100.0%0.0%0.0%
March 20266071.7%15.0%3.3%
April 20265773.7%8.8%1.8%
May 20265669.6%7.1%0.0%
June 20265675.0%8.9%0.0%

What drove SLC to MDW delay minutes?

Late aircraft was the largest recorded SLC-to-MDW delay category, accounting for 42.7% of 3,300 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.6%
Late aircraft42.7%
National airspace21.9%
Weather7.8%
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.