$373 Cheap British Airways flights Houston (IAH) to London (LHR)

You can discover affordable round-trip British Airways flights from $522 from IAH to LHR by sorting your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $373 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for one-way or return flights to London in January or February. You could find cheaper fares with British Airways during these off-peak times.

To get affordable flights from IAH to LHR with British Airways, start your search about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another helpful tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Book a seat on one of British Airways’s 11 direct weekly flights from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR). To view available options, enter your dates, destination and origin and hit search. Next, apply the “Nonstop” and “Airline” filters.

From takeoff till touchdown, a direct British Airways flight from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR) takes around 9h.

If it’s flexibility you’re after, Wednesday offers the most choice for British Airways flights from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR). You can select from 2 different departures.

The earliest British Airways flight from IAH to LHR departs at 3:55PM UTC-6, landing at 6:55AM UTC+0. If you prefer to head off later, the last British Airways flight leaves IAH at 9:45PM UTC-6 and touches down at LHR at 12:45PM UTC+0. Flying earlier is often a smart choice as morning and mid-morning flights are least likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Take a British Airways flight from George Bush Intercontinental Airport (IAH) to London, and you’re most likely to come in to Heathrow Airport (LHR). This is the airline’s primary hub in this destination.

For checked luggage, you can take 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 29 inches x 15 inches x 16 inches. You can also bring 2 cabin bags on board when flying standard economy from IAH to LHR with British Airways. This carry-on should weigh less than 50 lb and be no bigger than 19 inches x 9 inches x 17 inches. Going over these restrictions can mean additional fees, so read British Airways’s baggage allowance rules before packing your suitcase.

With top-tier customer service and an excellent in-flight experience, British Airways is the leading choice for many travelers heading from IAH to LHR. Also, if you’re a British Airways Executive Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR) route, British Airways typically flies Boeing 777 and Boeing 787-10 planes. Don’t forget that last-minute changes can occur for operational reasons, meaning your flight could be on a different aircraft.

Depending on your fare type, a fee is typically charged if you change or cancel your booking more than 24 hours after it’s been confirmed. To find flexible plane tickets, select our “Changes included” and “No cancel fee” boxes when searching for flights. To learn more about modifying or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”