Houston, TX → Chicago, IL flight delays
IAH → ORD · all airlines · 525 flights · April 2026 · source: US BTS
This route is delayed
27%of the time, by +80 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
73%
Delayed 3h+
2.2%
Cancelled
2.9%
Avg when late
+80m
Best & worst day to fly
Most on-time
Saturday
delayed 21%
Worst
Monday
delayed 32%
Which airline is most punctual on IAH → ORD?
Americandelayed 14%
Uniteddelayed 21%
Envoydelayed 32%
Republicdelayed 43%
Frequently asked
How often is the Houston, TX to Chicago, IL flight delayed?
About 27% of IAH → ORD flights arrive late (15+ minutes), by an average of 80 minutes when they do, based on 525 flights in April 2026.
Which airline is most punctual on IAH → ORD?
American, delayed 14% of the time — the best of the 4 airlines flying this route.
What is the best day to fly IAH → ORD?
Saturday is the most on-time (delayed 21%), while Monday is the worst (delayed 32%).
Airport overviews