Historical on-time performance
Chicago to Houston
937 miData through May 2026Source: US DOT · BTS
Flights on MDW–HOU arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,843 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time73%Medianon timep9040 minCancel1.2%Flights1,843
Why flights run late
Delay causes
- Airline35%
- Weather5%
- Air traffic (NAS)22%
- Late aircraft38%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline5%
- Weather73%
- Air traffic (NAS)23%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 22 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MDW → HOU
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 1,849 flights
- Middays76% on time · p90 35 min · 936 flights
- Afternoons69% on time · p90 40 min · 547 flights
- Overnights61% on time · p90 60 min · 991 flights
- Evenings60% on time · p90 55 min · 1,040 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.
- Wednesdays77% on time · p90 40 min · 742 flights
- Tuesdays76% on time · p90 35 min · 747 flights
- Saturdays76% on time · p90 30 min · 709 flights
- Thursdays73% on time · p90 35 min · 794 flights
- Fridays72% on time · p90 40 min · 807 flights
- Mondays72% on time · p90 40 min · 797 flights
- Sundays69% on time · p90 40 min · 767 flights
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