Historical on-time performance
Chicago to Houston
917 miData through Dec 2025Source: US DOT · BTS
No flights recorded for last 12 months on this route.
By airline
How each carrier compares
No airline figures for this window yet.
Why flights run late
Delay causes
Delay-cause data appears once delayed flights are recorded for this window.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MDW → IAH
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 63% to 80% on time.
- Mornings80% on time · p90 25 min · 502 flights
- Middays78% on time · p90 30 min · 250 flights
- Overnights73% on time · p90 65 min · 244 flights
- Evenings63% on time · p90 55 min · 245 flights
- Afternoons63% on time · p90 65 min · 280 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 79% on time.
- Tuesdays79% on time · p90 30 min · 195 flights · limited
- Sundays76% on time · p90 45 min · 221 flights
- Wednesdays73% on time · p90 40 min · 199 flights · limited
- Fridays73% on time · p90 45 min · 264 flights
- Thursdays72% on time · p90 40 min · 248 flights
- Saturdays70% on time · p90 35 min · 131 flights · limited
- Mondays67% on time · p90 75 min · 263 flights
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