IAH → CHAHouston to Chattanooga

live

Direct flights from Houston (IAH) to Chattanooga (CHA): 7 nonstop departures observed each week across 1 airline. 89% of the last 9 operated flights arrived within 15 minutes of schedule. The median arrival is 4 minutes early. No cancellations were recorded across the 9 tracked flights. The nonstop covers 1,103 km, an estimated 1 hour 55 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and Chattanooga. Updated 18 August 2026 at 07:53 UTC.

IAH Houston smooth · +0
CHA Chattanooga tracking
1,103 km · ~1h 55m est.
dep bank 12:30–20:047x weekly
Runs reliable · 1 airline · 7x weekly · nonstop
89% on time

of the last 9 operated IAH → CHA flights arrived within 15 minutes

Median arrival delay is −4 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Search live fares for this route →
Median arrival−4 minacross the last 9 operated legs
Flight time~1h 55mestimated from route distance
Weekly departures7x1 direct airline on the leg

Current nonstop fares

IAH → CHA · one way · economy · 1 adult

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TodayChecking…Direct airline fares
TomorrowChecking…Direct airline fares
In one weekChecking…Direct airline fares

Who flies it

observed on the boards · 7 days
United AirlinesUA89% on time

Flights UA5091 varies daily · UA5094 varies daily

History

operated legs · board outcomes
08-17UA5091departed−7
08-16UA5094departed+1
08-15UA5091departed−4
08-14UA5091departed+35
08-14UA5094departed−4
08-13UA5091departed−3
08-12UA5091departed−8
08-11UA5091departed−8
08-11UA5094departed+7

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IAHHouston +0 min smooth 🌤 clear · S 4 kt Full IAH delay board →
CHAChattanooga tracking Full CHA delay board →

How the Houston to Chattanooga route actually runs

Pro Flight Search tracks every published board update for nonstop IAH to CHA flights: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises. Fares link straight to the operating airline with no markups.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Houston (IAH) to Chattanooga (CHA) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/IAH-CHA
How we measure this →

IAH to CHA questions

Is IAH–CHA running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from IAH to CHA?

Great-circle distance is 1,103 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 108–125 min gate-to-gate on this route.

How often does IAH–CHA fly?

United Airlines runs the route with about 14 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at IAH and arrival-side delay at CHA, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.