IAH → LHRHouston to London

live

Direct flights from Houston (IAH) to London (LHR): 28 nonstop departures observed each week across 2 airlines. 89% of the last 9 tracked flights arrived within 15 minutes of schedule. The median arrival is on schedule. No cancellations were recorded across the 9 tracked flights. The nonstop covers 7,763 km, an estimated 10 hours 27 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and London. Updated 30 October 2026 at 15:04 UTC.

Today, IAH → LHR

Fri 30 Oct · local times
  1. 16:50 BA194British Airways On scheduleGate D14 · TE ·
  2. 17:25 UA880United Airlines On scheduleGate E5 · TC ·
  3. 20:00 UA5United Airlines On scheduleGate E7 · TC ·
  4. 22:40 BA196British Airways Sched 22:40Departure not confirmed by the board ·

Checked IAH board 09:27 · LHR board 15:04

IAH Houston smooth · +0
LHR London busy · +21
7,763 km · ~10h 27m est.
dep bank 15:30–21:1028x weekly
Runs reliable · 2 airlines · 28x weekly · nonstop
89% on time

of the last 9 tracked IAH → LHR flights arrived within 15 minutes

Median arrival delay is +1 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+1 minacross the last 9 arrivals
Flight time~10h 27mestimated from route distance
Weekly departures28x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
British AirwaysUnited 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
British AirwaysBA80% on time

Flights BA194 varies daily · BA196 21:10 daily

United AirlinesUA

Flights UA880 varies daily · UA5 varies daily

History

operated legs · board outcomes
10-29BA194arrived+8
10-29BA196dep −11 → arr−22
10-29UA5dep +27 → arr+6
10-29UA880dep +22 → arr−6
10-28BA194dep +4 → arr+4
10-28UA5dep −4 → arr−10
10-28UA880dep +101 → arr−29
10-27BA194arrived+16
10-27BA196dep +24 → arr+1

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 🌤 mostly cloudy · ENE 9 kt Full IAH delay board →
LHRLondon +21 min busy 🌤 clear · E 7 kt Full LHR delay board →

Weather lens

Conditions are tightest at IAH and LHR: a 26% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +-1 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Houston to London route actually runs

Pro Flight Search records official board updates for nonstop IAH to LHR 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 London (LHR) route reliability, measured from operated flights on official airport boards.

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

IAH to LHR questions

Is IAH–LHR running on time right now?

Smooth skies ahead. The arrival side at LHR is the weaker end, route health score 86/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from IAH to LHR?

Great-circle distance is 7,763 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 578–695 min gate-to-gate on this route.

How often does IAH–LHR fly?

2 carriers operate this route, around 28 flights a week between them. Compare carrier days and times in the airline list above.

What does the route health score measure?

A blend of departure-side delay at IAH and arrival-side delay at LHR, 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.