S$400 Cheap Flights from Houston to London

View S$400 flight on Mon, 12 Jan, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR)

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Cheap Flights from Houston to London (IAH-LHR)

Prices were available within the past 7 days and start at S$400 for one-way flights and S$807 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Sun, 24 Aug - Tue, 9 Sep
IAH
Houston
LHR
London
S$807 Return, found 6 days ago
S$807
Return
found 6 days ago
Select Virgin Atlantic flight, departing Sun, 24 Aug from Houston to London, returning Tue, 9 Sep, priced at S$807 found 6 days ago
Delta
Tue, 2 Sep - Tue, 9 Sep
IAH
Houston
LHR
London
S$808 Return, found 4 days ago
S$808
Return
found 4 days ago
Select Delta flight, departing Tue, 2 Sep from Houston to London, returning Tue, 9 Sep, priced at S$808 found 4 days ago
Air Canada
Tue, 2 Sep - Tue, 9 Sep
IAH
Houston
LHR
London
S$814 Return, found 4 days ago
S$814
Return
found 4 days ago
Select Air Canada flight, departing Tue, 2 Sep from Houston to London, returning Tue, 9 Sep, priced at S$814 found 4 days ago
Air Canada
Tue, 12 Aug - Tue, 26 Aug
IAH
Houston
LHR
London
S$816 Return, found 6 days ago
S$816
Return
found 6 days ago
Select Air Canada flight, departing Tue, 12 Aug from Houston to London, returning Tue, 26 Aug, priced at S$816 found 6 days ago
United
Tue, 2 Sep - Tue, 9 Sep
IAH
Houston
LHR
London
S$822 Return, found 4 days ago
S$822
Return
found 4 days ago
Select United flight, departing Tue, 2 Sep from Houston to London, returning Tue, 9 Sep, priced at S$822 found 4 days ago
United
Sun, 24 Aug - Tue, 9 Sep
IAH
Houston
LHR
London
S$825 Return, found 6 days ago
S$825
Return
found 6 days ago
Select United flight, departing Sun, 24 Aug from Houston to London, returning Tue, 9 Sep, priced at S$825 found 6 days ago
Virgin Atlantic
Tue, 2 Sep - Tue, 9 Sep
IAH
Houston
LHR
London
S$825 Return, found 4 days ago
S$825
Return
found 4 days ago
Select Virgin Atlantic flight, departing Tue, 2 Sep from Houston to London, returning Tue, 9 Sep, priced at S$825 found 4 days ago
Virgin Atlantic
Wed, 10 Sep - Mon, 15 Sep
IAH
Houston
LHR
London
S$826 Return, found 2 days ago
S$826
Return
found 2 days ago
Select Virgin Atlantic flight, departing Wed, 10 Sep from Houston to London, returning Mon, 15 Sep, priced at S$826 found 2 days ago
United
Tue, 2 Sep - Tue, 9 Sep
IAH
Houston
LHR
London
S$829 Return, found 4 days ago
S$829
Return
found 4 days ago
Select United flight, departing Tue, 2 Sep from Houston to London, returning Tue, 9 Sep, priced at S$829 found 4 days ago
British Airways
Thu, 21 Aug - Mon, 25 Aug
IAH
Houston
LHR
London
S$836 Return, found 5 days ago
S$836
Return
found 5 days ago
Select British Airways flight, departing Thu, 21 Aug from Houston to London, returning Mon, 25 Aug, priced at S$836 found 5 days ago

Find the cheapest month to fly from Houston (IAH) to London (LHR)

August is typically the cheapest month to fly

From S$672 - S$1,573 per traveller.

Graph displaying average flight prices per month

Houston to London route information
Origin airport
George Bush Intercontinental
Destination airport
Heathrow
Return price
S$806
Distance
7718 km
Average flight time
15 hours 17 mins

Flights from Houston to London

There are several airlines that operate frequent flights from Houston (IAH) to London (LHR) including

The earliest flight leaves George Bush Intercontinental Airport at 15:20 and arrives at Heathrow Airport at 06:55. The last flight of the day departs Houston at 23:05 and arrives at London at 13:00.

The flight distance from Houston to London is about 7804 km, the shortest flight is 08 hours 50 minutes with Virgin Atlantic.

Expedia lets you search across the largest number of airlines and London flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Houston London flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Houston to London trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your London flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Houston to London with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR)?
Based on fares quoted within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between IAH and LHR start from S$807. Book ASAP to secure the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from George Bush Intercontinental Airport (IAH) to London Heathrow?
When it comes to cancellation fees, every airline has a different set of terms and conditions. If you decide to cancel your holiday, head to our Customer Service Portal.
How do I find cheap flights from George Bush Intercontinental Airport (IAH) to Heathrow Airport (LHR) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAH to London Heathrow flights, you'll see a "no change fees" filter for you to select.
How far is the flight from IAH to Heathrow Airport (LHR)?
Houston to Hounslow is around 7,800 kilometres, so get ready to spend a while in the air. Make sure you pack all the essentials, from your toothbrush to your hairbrush. Throw in a few snacks to nibble on throughout your flight too.
Which airlines fly direct from Houston Airport to London Heathrow?
There are a few airlines that fly from George Bush Intercontinental Airport (IAH) to LHR. United Airlines (UA) is a great choice, offering 60 flights every month. Operating 52 flights per month on this route, British Airways (BA) is another traveller favourite.
Are George Bush Intercontinental Airport (IAH) to LHR flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so there are no guarantees. While last-minute flight deals between Houston Airport and LHR are of course possible, it also makes sense to keep an eye on prices well before you fly. In fact, some air carriers release their prices up to 12 months prior to the departure date. Expedia is continuously updating the best bargains around, so keep checking back and be ready to lock in your seat when the price dips.

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George Bush Intercontinental to London
S$806.50
*Available to Expedia members.