Historical on-time performance
Chicago to Houston
937 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–HOU arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 1,841 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9040 minCancel1.3%Flights1,841
Why flights run late
Delay causes
- Airline33%
- Weather3%
- Air traffic (NAS)22%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
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 (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 1,924 flights
- Middays76% on time · p90 30 min · 884 flights
- Afternoons68% on time · p90 40 min · 483 flights
- Overnights62% on time · p90 60 min · 1,023 flights
- Evenings62% on time · p90 55 min · 1,054 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.
- Saturdays77% on time · p90 30 min · 694 flights
- Tuesdays76% on time · p90 35 min · 760 flights
- Wednesdays76% on time · p90 40 min · 756 flights
- Fridays74% on time · p90 40 min · 805 flights
- Thursdays73% on time · p90 35 min · 793 flights
- Mondays72% on time · p90 40 min · 806 flights
- Sundays69% on time · p90 45 min · 754 flights
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