Chicago, IL → Houston, TX flight delays
ORD → IAH · all airlines · 526 flights · April 2026 · source: US BTS
This route is delayed
29%of the time, by +72 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
71%
Delayed 3h+
1.8%
Cancelled
2.7%
Avg when late
+72m
Best & worst day to fly
Most on-time
Sunday
delayed 20%
Worst
Friday
delayed 41%
Which airline is most punctual on ORD → IAH?
Uniteddelayed 24%
Envoydelayed 33%
Republicdelayed 39%
Americandelayed 47%
Frequently asked
How often is the Chicago, IL to Houston, TX flight delayed?
About 29% of ORD → IAH flights arrive late (15+ minutes), by an average of 72 minutes when they do, based on 526 flights in April 2026.
Which airline is most punctual on ORD → IAH?
United, delayed 24% of the time — the best of the 4 airlines flying this route.
What is the best day to fly ORD → IAH?
Sunday is the most on-time (delayed 20%), while Friday is the worst (delayed 41%).
Airport overviews