ORIGIN AIRPORT REPORT
MDW
Chicago, IL (MDW) departure reliability
Of 73,996 scheduled reportable flights departing MDW, 73.8% arrived on time, 15.1% arrived at least 30 minutes late, and 1.5% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALGenerally reliable
73.8%arrived on time
15.1%30+ min late
1.5%cancelled
73,996scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from MDW had the largest sample?
MDW to ATL was MDW's largest published route sample, with 3,528 scheduled flights and a 78.2% on-time rate during July 2025–June 2026.
MDW→ATLChicago, IL (MDW) to Atlanta, GA (ATL)3,528 flights analyzedGenerally reliable78.2%on timeMDW→PHXChicago, IL (MDW) to Phoenix, AZ (PHX)2,797 flights analyzedGenerally reliable73.7%on timeMDW→MCOChicago, IL (MDW) to Orlando, FL (MCO)2,774 flights analyzedGenerally reliable74.2%on timeMDW→MSPChicago, IL (MDW) to Minneapolis, MN (MSP)2,485 flights analyzedGenerally reliable75.5%on timeMDW→LGAChicago, IL (MDW) to New York, NY (LGA)2,378 flights analyzedHigher disruption65.7%on timeMDW→LASChicago, IL (MDW) to Las Vegas, NV (LAS)2,336 flights analyzedGenerally reliable74.5%on timeMDW→DENChicago, IL (MDW) to Denver, CO (DEN)2,335 flights analyzedGenerally reliable71.6%on timeMDW→DALChicago, IL (MDW) to Dallas, TX (DAL)2,153 flights analyzedGenerally reliable75.5%on timeMDW→DCAChicago, IL (MDW) to Washington, DC (DCA)2,104 flights analyzedVariable67.6%on timeMDW→MCIChicago, IL (MDW) to Kansas City, MO (MCI)2,097 flights analyzedGenerally reliable78.0%on timeMDW→BNAChicago, IL (MDW) to Nashville, TN (BNA)1,885 flights analyzedGenerally reliable78.8%on timeMDW→BWIChicago, IL (MDW) to Baltimore, MD (BWI)1,852 flights analyzedVariable76.5%on timeMDW→HOUChicago, IL (MDW) to Houston, TX (HOU)1,841 flights analyzedGenerally reliable72.5%on timeMDW→STLChicago, IL (MDW) to St. Louis, MO (STL)1,705 flights analyzedLower disruption80.6%on timeMDW→TPAChicago, IL (MDW) to Tampa, FL (TPA)1,607 flights analyzedGenerally reliable75.6%on time
Which airline was most reliable departing MDW?
Among qualifying MDW airline departure results, Delta Air Lines had the highest on-time rate: 84.4% of 1,383 flights. Allegiant Air was lowest at 68.8% across 333 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 69,309 | 73.6% | 15.1% | 1.5% |
| Frontier Airlines | 1,815 | 72.2% | 18.7% | 1.8% |
| Delta Air Lines | 1,383 | 84.4% | 9.4% | 2.5% |
| SkyWest Airlines | 1,156 | 78.2% | 14.5% | 1.1% |
| Allegiant Air | 333 | 68.8% | 18.6% | 0.0% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.