Houston (IAH) to London (LHR) flights
2 airlines fly nonstop from Houston (IAH) to London (LHR): British Airways and United Airlines. The two airports are 4,824 miles (7,764 km) apart. British Airways is in oneworld and United Airlines is in Star Alliance. There are also 47 ways to fly it with one stop, through Montreal, Cincinnati and Toronto and more.
Airlines flying nonstop from IAH to LHR
- British Airwaysoneworld · bookable with 9 programsWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH to LHR with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- Alaska Atmos RewardsBooks British Airways
- American AAdvantageBooks British Airways
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- British Airways ClubBooks British Airways
- Cathay Pacific Asia MilesBooks British Airways
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- Finnair PlusBooks British Airways
- Iberia ClubBooks British Airways
- JAL Mileage BankBooks British Airways
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Qantas Frequent FlyerBooks British Airways
- Qatar Airways Privilege ClubBooks British Airways
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAH to LHR with one stop
47 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Montreal (YUL)Air Canada the whole way
- Via Cincinnati (CVG)United Airlines, then British Airways
- Via Toronto (YYZ)Air Canada the whole way
- Via Pittsburgh (PIT)United Airlines, then British Airways
- Via Nashville (BNA)United Airlines, then British Airways
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Boston (BOS)JetBlue Airways the whole way
+2 - Via New York (EWR)United Airlines the whole way
- Via Dulles (IAD)United Airlines the whole way
- Via Saint Louis (STL)United Airlines, then British Airways
- Via New York (JFK)JetBlue Airways the whole way
+2 - Via Baltimore (BWI)United Airlines and Frontier Airlines, then British Airways
- Via Philadelphia (PHL)American Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
IAH to LHR: common questions
Which airlines fly nonstop from IAH to LHR?
British Airways (oneworld) and United Airlines (Star Alliance) fly nonstop from Houston (IAH) to London (LHR).
How far is Houston from London by plane?
Houston (IAH) and London (LHR) are 4,824 miles (7,764 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAH to LHR award flights?
22 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, Alaska Atmos Rewards, American AAdvantage, ANA Mileage Club, Avianca LifeMiles, British Airways Club, Cathay Pacific Asia Miles and 14 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAH to LHR cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAH to LHR with taxes and fees.
Where can I connect between Houston and London?
The most direct connections are through Montreal (YUL), Cincinnati (CVG), Toronto (YYZ), Pittsburgh (PIT) and Nashville (BNA). On 28 of them the same airline flies both flights, for example Air Canada through Montreal.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.