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Cheap Flights from Houston (HOUA) to London (LHR)

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Compare Houston to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from Houston to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Houston to London Heathrow? Find the lowest prices on one-way and return tickets right here.
London.$860 per passenger.Departing Mon, 25 Aug, returning Wed, 27 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Houston George Bush Intercntl. on Mon, 25 Aug, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Wed, 27 Aug, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $860, select.
London.$916 per passenger.Departing Tue, 19 Aug, returning Thu, 11 Dec.Return flight with Air France.Outbound indirect flight with Air France, departs from Houston George Bush Intercntl. on Tue, 19 Aug, arriving in London Heathrow.Inbound indirect flight with Air France, departs from London Heathrow on Thu, 11 Dec, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $916, select.
London.$922 per passenger.Departing Tue, 13 May, returning Tue, 20 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Tue, 13 May, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Tue, 20 May, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $922, select.
London.$922 per passenger.Departing Sun, 24 Aug, returning Thu, 4 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Sun, 24 Aug, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Thu, 4 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $922, select.
London.$922 per passenger.Departing Wed, 24 Sep, returning Wed, 8 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Wed, 24 Sep, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Wed, 8 Oct, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $922, select.
London.$922 per passenger.Departing Wed, 1 Oct, returning Tue, 14 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Wed, 1 Oct, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Tue, 14 Oct, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $922, select.
London.$923 per passenger.Departing Wed, 10 Sep, returning Wed, 24 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Wed, 10 Sep, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Wed, 24 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $923, select.
London.$928 per passenger.Departing Sun, 28 Sep, returning Tue, 14 Oct.Return flight with Iberia.Outbound direct flight with Iberia departs from Houston George Bush Intercntl. on Sun, 28 Sep, arriving in London Heathrow.Inbound direct flight with Iberia departs from London Heathrow on Tue, 14 Oct, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $928, select.

Find the cheapest month to fly from Houston to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to London Heathrow flights are currently cheapest in August.
May
from $922
Jun
from $1,329
Jul
from $1,306
Aug
from $860
Sep
from $923
Oct
from $922
Nov
from $962
Dec
from $962
Jan
from $930
Feb
Find prices
Mar
from $928
Apr
from $1,065

Direct flights from Houston to London Heathrow

Houston to London Heathrow: Alternative routes

Compare routes from Houston to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Houston to London: Flight information

The things to know before you go.
Cheapest flight found$857
Cheapest month to flyAugust
Average flight time9 hrs, 13 mins
Most popular airlineAir Canada
Average flights per week155

Finding cheap flights from Houston to London Heathrow: Frequently asked questions

The best price we found for a return flight from Houston to London Heathrow is $860. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
9 hours and 13 minutes is the average flight time from Houston to London Heathrow.
Air Canada, SWISS and Lufthansa fly direct from Houston to London Heathrow.
As of May 2025, there are 155 flights per week flying from Houston to London Heathrow.
The cheapest month to fly from Houston to London Heathrow is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to London Heathrow Airport on Monday, 25 August 2025.
Yes – the average flight time is 9 hours and 13 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Houston to London Heathrow Airport (LHR): what you need to know

  • Start your holiday planning by considering where you'll take off for your flight from Houston to London Heathrow Airport (LHR). George Bush Intercontinental Airport (IAH) and William P. Hobby Airport (HOU) are the main airports in Houston.

  • The average length of a direct flight from Houston to London Heathrow Airport is 9 hours 8 minutes.

  • London is 5 hours ahead of Houston. London Heathrow Airport is located in London, which operates on the UTC+0 timezone.

  • George Bush Intercontinental Airport (IAH) to London Heathrow Airport (LHR) is the most popular route. There are 38 direct weekly departures to choose from. If you prefer a later start to the day, hop on the last flight with British Airways at 22:40. Go for the first IAH to LHR departure operated by British Airways at 15:35 if you want to get going earlier.

  • Arrive at the airport on time so you don't miss your flight from Houston to LHR. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.

  • With more travellers during busy months like July, get to the terminal earlier than usual. Two hours for domestic flights and as much as four for international journeys will help you deal with longer queues. Remember things also get busy during major holidays like July Fourth.

Airports in Houston

George Bush Intercontinental Airport (IAH)

  • You can hop on a direct flight from Houston to London Heathrow Airport (LHR) leaving from George Bush Intercontinental Airport (IAH).

  • You can travel on a direct flight from Houston to London Heathrow Airport with British Airways. This well-known airline offers services from IAH.

  • We make it simple to book a flight from Houston to LHR with a stopover. To see all your options departing from George Bush Intercontinental Airport (IAH), deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to explore your chosen city. Popular stopovers between IAH and LHR include:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Manchester Airport (MAN)

    • Detroit Metropolitan Wayne County Airport (DTW)

  • The distance from central Houston to IAH is about 27 kilometres. Check out Google Maps for the quickest way to get there, whether in your own car or with public transport.

  • Catching an early flight from Houston to London Heathrow Airport? Avoid rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these stays near George Bush Intercontinental Airport:

William P. Hobby Airport (HOU)

  • Searching for other options for a direct flight from Houston to London Heathrow Airport (LHR)? Check out the fares flying out of William P. Hobby Airport (HOU).

  • United operates direct flights from Houston to LHR departing from HOU. Book your favourite aisle seat and reach your destination in one go.

  • Maximise your holiday with a stopover on your flight from Houston to London Heathrow Airport. Visit family or friends or tick another city off your list. Whatever you decide to do, check out these stops between William P. Hobby Airport and LHR:

    • Pearson International Airport (YYZ)

    • Detroit Metropolitan Wayne County Airport (DTW)

    • Charlotte Douglas International Airport (CLT)

  • Using public transport, you can travel from central Houston to HOU in about 1 hour and 42 minutes. The terminal is roughly 19 kilometres away, and making the journey by car will take approximately 22 minutes.

  • You're going on holiday, so why not book an extra night away? Consider checking in to one of these hotels near William P. Hobby Airport the day before your flight from Houston to LHR:

About London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • London Heathrow Airport to the centre of London takes around 57 minutes by car. It's approximately 31 kilometres away. See what options are available, such as cabs, car rentals or ride-sharing services.

  • Getting there by public transport will take you around 1 hour and 1 minute.

How to find the cheapest flights from Houston to London Heathrow Airport (LHR)

  • The best price we've seen for a one-way ticket from Houston to London Heathrow Airport is $448. The cheapest price for a return flight is $860. Keep in mind fares may change due to demand at the time of booking.

  • To secure flight tickets from Houston to LHR, reserve your journey 11 months before your departure.

  • You'll land the best savings on your tickets from Houston to London Heathrow Airport by travelling in August. Take it one step further and use the 'Whole month' tool to see the cheapest day to fly out.

  • Set up a Price Alert and track any changes on this route through email or push notifications. You'll be the first to know when the fares drop. Timing matters when searching for flight tickets from Houston to LHR.

  • Play around with the filters to find your ideal journey. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Houston to London Heathrow Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and journey duration.

The best time to fly from Houston to London Heathrow Airport (LHR)

  • February is the quietest time of year to travel to London. Alternatively, join the crowds and take your trip in July. This is the most popular month for flights from Houston to London Heathrow Airport.

  • Lock in your flight from Houston to LHR for July if you're eager to explore the city during its warmest month. You can expect temperatures in London to range from 11ºC to 26ºC.

  • If you like travelling in cooler conditions, look for a cheap flight from Houston to London Heathrow Airport in January when temperatures average between 0ºC and 9ºC.

More about London

Complete your London trip with a car rental

  • Get behind the wheel of one of our car rentals in London and see the city on your own terms. Easily compare prices from trusted providers in one go after booking your hotel and cheap flights from Houston to London Heathrow Airport.

Plan the rest of your trip from Houston to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.