IAH → STLHouston to St Louis

live

Direct flights from Houston (IAH) to St Louis (STL): 7 nonstop departures observed each week across 1 airline. The median arrival is 4 minutes early. No cancellations were recorded across the 3 tracked flights. The nonstop covers 1,076 km, an estimated 1 hour 53 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and St Louis. Updated 18 October 2026 at 19:22 UTC.

Today, IAH → STL

Sun 18 Oct · local times
  1. 07:25 UA3744 Left 07:23 ·
  2. 08:00 UA6214United Left 07:50 Landed 09:17 −53
  3. 11:58 UA2042United Left 12:00 STL est. 14:06In the air · sched 14:10
  4. 18:05 UA4479 On scheduleGate B66 · TC ·
  5. 20:15 UA1528 On scheduleGate D6 · TC ·

Checked IAH board 14:22 · STL board 10:18

IAH Houston smooth · +0
STL St Louis smooth · +0
1,076 km · ~1h 53m est.
dep bank 08:00–20:157x weekly
Running clean · 1 airline · 7x weekly · nonstop
100 / 100

route health from live IAH and STL delay boards

Median arrival delay is −4 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−4 minacross the last 3 operated legs
Flight time~1h 53mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
United AirlinesUA

Flights UA6214 08:00 Mo Tu We Th Fr Su · UA2042 11:58 daily · UA4479 18:05 daily · UA1528 20:15 daily

History

operated legs · board outcomes
10-18UA2042dep +2 → arr−4
10-18UA3744departed−2
10-18UA6214dep −10 → arr−53

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 🌤 few clouds · E 5 kt Full IAH delay board →
STLSt Louis +0 min smooth 🌤 clear · S 8 kt Full STL delay board →

Weather lens

Current conditions put the pressure at STL: 36% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Houston to St Louis route actually runs

Pro Flight Search records official board updates for nonstop IAH to STL flights through the day: 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.

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 St Louis (STL) route reliability, measured from operated flights on official airport boards.

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

IAH to STL questions

Is IAH–STL 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.

Morning or evening flight on IAH–STL?

Operators schedule morning departures around 08:00 and evening departures around 18:05 from IAH. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.

How long is the flight from IAH to STL?

Great-circle distance is 1,076 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 106–122 min gate-to-gate on this route.

How often does IAH–STL fly?

United Airlines runs the route with about 27 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.