Cheap flights from London to Houston (LHR–IAH)
United Kingdom
United States
British Airways and United Airlines fly London to Houston (LHR–IAH) nonstop and back, a great-circle distance of 7,760 km (4,820 mi).
- From
- LHR
- London
- To
- IAH
- Houston
- Nonstop
- Yes · 2 airlines
- Airlines
- BA · UA
- Cheapest fare found
- £369 one-way
- Distance
- 7,760 km (4,820 mi)
- Time difference
- Houston 6 hours behind
- Most flights
- United Airlines
- Time in the air
- 9h 34m · 8h 35m back
- On time (Touchdown Index)
- 77.5%
- Flights a week
- BA ~8 · UA ~10
- Aircraft seen
- Boeing 777-200 · Boeing 777-300ER · Boeing 787-10 Dreamliner
Data from the sources listed, updated:· How we verify
London to Houston fares by month
Cheapest one-way fare found: £369 for December 2026 on Icelandair (2 stops).
- Oct ’26£675
- Nov ’26£406
- Dec ’26£369
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search.
When to fly LHR–IAH
For London Heathrow (LHR) to Houston George Bush Intercontinental (IAH), December 2026 had the lowest fare found (£369). Days in Houston average 18–28 °C in February, March, April, October, November and December. Set your watch 6 hours back on landing at IAH.
London to Houston: frequently asked questions
Fares: Aviasales price cache, 11 October 2026; tracked flights between 6 September and 3 October 2026, from public ADS-B data.
How much is a flight from London Heathrow (LHR) to Houston George Bush Intercontinental (IAH)?
From £369 one-way, the cheapest fare found for December 2026 on Icelandair with 2 stops (found 11 October 2026).
How long is the LHR–IAH flight?
9h 34m wheels-up to wheels-down, the median of 88 tracked flights; IAH–LHR took 8h 35m.
Which airlines fly LHR–IAH direct?
British Airways and United Airlines.
What is the cheapest month to fly LHR–IAH?
December 2026, at £369; the dearest month found was £675.
What is the time difference between London and Houston?
Houston is 6 hours behind London: a LHR departure at noon is 06:00 local time in IAH.
Is LHR–IAH usually on time?
77.5% of 142 LHR–IAH flights landed within 15 minutes of their usual time; 2.8% were over an hour late.
How many LHR–IAH flights a week?
British Airways 8 and United Airlines 10 each way.
What aircraft fly LHR–IAH?
Boeing 777-200, Boeing 777-300ER and Boeing 787-10 Dreamliner.
Houston to London: the return flight (IAH–LHR)
All 2 airlines also fly IAH–LHR nonstop.
The return takes 8h 35m in the air (median of 55 tracked flights), 59 minutes shorter than LHR–IAH.
Airlines flying LHR–IAH nonstop
| Airline | Usually takes off (LHR time) | Type | Alliance |
|---|---|---|---|
 British Airways BA | 09:30–15:21 | full-service | oneworld |
| United Airlines UA | 10:16–14:20 | full-service | Star Alliance |
One-stop alternatives to flying LHR–IAH nonstop
One airline on both legs; check it's sold as one ticket.
- Via Montreal (YUL) with
Air Canada: 7,760 km (4,820 mi) flown, almost no further than nonstop. - Via Toronto (YYZ) with Air Canada: 7,770 km (4,830 mi) flown, almost no further than nonstop.
- Via Detroit (DTW) with
Delta Air Lines: 7,780 km (4,830 mi) flown, almost no further than nonstop. - Via Charlotte (CLT) with
American Airlines: 7,880 km (4,890 mi) flown, 1% further than nonstop. - Via Chicago (ORD) with American Airlines and United Airlines: 7,830 km (4,870 mi) flown, 1% further than nonstop.
LHR–IAH route map
More from London and Houston
Other arrivals in United States
Also nonstop from LHR, nearest to IAH first (straight-line distance):
- Austin (AUS) airport guide · 225 km (140 mi) from IAH
- LHR–DFW: Dallas · 362 km (225 mi) from IAH
- New Orleans (MSY) airport guide · 489 km (304 mi) from IAH
- Nashville (BNA) airport guide · 1,060 km (656 mi) from IAH
- St. Louis (STL) airport guide · 1,080 km (668 mi) from IAH
Explore the airlines’ route maps
Plan your arrival at George Bush Intercontinental Airport (IAH)
Departure
London Heathrow Airport
Heathrow (LHR), London. In our data, 81 airlines fly nonstop from LHR to 213 destinations.
View LHR airport guide →Arrival
George Bush Intercontinental Airport
3 ways into Houston, fastest from 30 min:
- METRO 500 Downtown Direct 30–40 min · $4.50
- METRO bus 102 50 min–1h 30m
- Taxi 30–50 min
Weather in Houston vs London
Houston is warmer than London in every month, by 9–12°C; the biggest gap is in October (28°C against 16°C). In October it averages 28°C in Houston and 16°C in London.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Houston | 18° | 20° | 23° | 26° | 30° | 33° | 34° | 34° | 32° | 28° | 23° | 19° |
| London | 9° | 9° | 12° | 16° | 19° | 22° | 24° | 23° | 21° | 16° | 12° | 9° |
Average daily highs. Climate normals from Houston and Climate of London (Wikipedia, CC BY-SA), which cite the national weather services.
Onward from Houston
Places you can't fly to nonstop from LHR, but can from IAH — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- mediacentre.britishairways.com — Gatwick–Bangkok year-round from 2026
- en.wikipedia.org — current destination list, cross-checked 2026-09-25 (terminated routes removed)
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
Flight tracking: adsb.lol community ADS-B data (CC0), 6 September – 3 October 2026. Times are median wheels-up to wheels-down; add taxiing for gate-to-gate.
Report a change — seen something different at the airport or on the airline's site? We re-check and log corrections publicly.