Houston to London (IAH–LHR) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
IAH–LHR is served by 2 airlines with nonstop service. British Airways and United Airlines lead the route. The flight covers 4,824 miles in approximately 8h. Beyond nonstop, 66 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| BA British Airways Also: AY, EI, IB | 14 | 77W, 781 | 8h44-8h55 | Oneworld | AY, EI, IB | |
| UA United Airlines Also: AC, LX, OS, SN | 14 | 777 | 9h18-9h20 | Star Alliance | AC, LX, OS, SN |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach London from Houston
| Metric | IAH→LHR | AUS→LHR |
|---|---|---|
| Distance from IAH | – | 140 mi |
| Nonstop airlines | 2 | 4 |
| Weekly flights | 119 | 35 |
| Flight time | 8h | 8h 10m |
| Departure OTP | 84% | – |
Travel Essentials
IAH: CDT · LHR: BST
When it's 6:00 PM in Houston, it's 12:00 AM (next day) in London.
US citizens need a UK Electronic Travel Authorisation (ETA) before travel, applied for online. The ETA costs GBP 10 and is valid for multiple entries over 2 years. Stays are permitted for up to 6 months per visit. Passport must be valid for the duration of stay.
Declare goods over GBP 390 in value. UK duty-free allowances apply on goods from outside the UK.
IAH has no direct rail link to downtown Houston. The IAH Express bus runs from Houston Amtrak/Greyhound station via Park & Ride to Terminal C (60–90 min, $1.25 with METRO Q card). This is the only transit option; Houston's rail network does not reach the airport.Taxis from downtown Houston cost $50–70 and take 40–60 minutes. Ride-hails (Uber, Lyft) are typically $35–55. IAH sits 23 miles north of downtown on the North Freeway (I-45); traffic is heavy during morning and evening rush. Remote economy parking lots serve all terminals via shuttle.
Heathrow Express runs every 15 minutes to Paddington (15 min, £25). Piccadilly line is slower (50–60 min) but £5.50 with Oyster. National Express coaches serve all terminals from Victoria (60–90 min, £6–10). Black cabs cost £50–90 to central London depending on traffic and time of day.
Mild maritime climate. Summers average 18–23°C with long daylight hours. Winters are 2–7°C, rarely below freezing. Rain is frequent year-round but rarely heavy. Pack layers and a waterproof jacket regardless of season. Fog can disrupt flights November through February.
IAH–LHR Quick Facts
Frequently Asked Questions
Flights from IAH to LHR
George Bush Intercontinental Airport (IAH) and London Heathrow Airport (LHR) are connected by nonstop service from British Airways and United Airlines. With 119 weekly departures, this is a heavily served route.
IAH to LHR Flight Duration and Schedule
Nonstop flight time from IAH to LHR ranges from 8 hours 0 minutes to 9 hours 30 minutes. The route covers a distance of 4,824 miles (7,763 km). There are approximately 119 weekly flights outbound and 130 return, totaling 249 flights per week in both directions.
Connecting Options and Alternatives
66 one-stop connections are available, with the fastest taking approximately 10 hours via BRU. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Austin (AUS).