Find Cheap Flights from Houston to London – Compare and Save

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Everything you should know

Advice from real travellers
For United, arrive early at Houston to keep check-in smooth and less stressful.
At Heathrow, follow signage closely; exits and Wi-Fi can be less convenient.
Expert advice
+1
Expert advice
+1
Direct flights
Every day
You can fly direct with United Airlines and British Airways. Average duration is 9h 08m
Direct flights
+1
Direct flights
+1
Top routes
HOU - LHR
Cheapest • 14% average savings
IAH - LHR
Most popular
Insights
Insights
Avoid delays
British Airways
Most punctual • 85% on-time
Night
Best time • Fewest delays
Insights
Insights
When to book
21 weeks
in advance
Our data shows that travellers who book at least 21 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 28% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Atlanta Hartsfield-Jackson (ATL)
Cheapest • Avg £455 (return)
Washington, D.C. Dulles Intl (IAD)
Shortest trip • 12h 46m (one-way)
Insights
Insights
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We hope you enjoy your trip to London Heathrow Airport!
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Expert advice
Flight Deals

Cheap Flights from Houston to Heathrow

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Houston to Heathrow

Multiple Airlines Logo
HO1  Johor Bahru Hallmark Regency Hotel-LHR London Heathrow Airport
4833 mimulti-stop
Multiple Airlines Logo
LHR  London Heathrow Airport-HO1 Johor Bahru Hallmark Regency Hotel
4833 mimulti-stop
Multiple Airlines
Booking Insights

Price, demand, and travel trends for Houston to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Houston to London Heathrow Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Houston to London Heathrow Airport. It's 7% cheaper than the average day, while Monday is the most expensive, with prices 9% higher.

What is the cheapest month to fly from Houston to London Heathrow Airport?

•January is the cheapest month to fly from Houston to London Heathrow Airport at £525 return.
•June (£1,029) and July (£901) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 96% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Houston to London Heathrow Airport the cheapest?

Flights from Houston to London Heathrow Airport are cheapest 21 weeks before departure. Booking in this window typically costs about 20% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Houston to Heathrow

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Tara Craig

Tara Craig

Expert on Austrian Airlines

Tara Craig has been a journalist for 17 years, focusing on aviation for more than a decade. She has covered everything from how airports accommodate disabled passengers to the emergence of electric air taxis. Tara is constantly travelling and finds it hard to stop noticing things – good and bad – about the air travel experience.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

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Key details for Houston to London Heathrow Airport flights

Low season

January
Beat the crowds with an average 32% drop in traveller numbers.
The most popular month to fly with an average 48% increase in traveller numbers.

When to book flights from Houston to Heathrow

Are your dates flexible? Find out the best times to travel from Houston to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights from Houston to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Houston to Heathrow 
AndrewFlew with United Airlines-Jul 2025
United really looked after me, just make sure you arrive good and early to ensure an unpressurised check in
Verified travelerFlew with British Airways-May 2025
Heathrow has good signage. There are lots of people going to the same terminal waiting for the train. Be patient and when you have connecting flights choose a 2-hour layover.
JamesFlew with American Airlines-Apr 2025
Try to avoid Heathrow! Not the most convenient to get into London unless you have a driver. Also, Heathrow needs better signs on where to go to exit and better wifi for foreign travelers.

Your Houston to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Houston to London Heathrow Airport?

    These are the earliest and latest flight times available from Houston to London Heathrow Airport:

    • Earliest: departs at 15:50 and lands at 00:58
    • Latest: departs at 22:40 and lands at 07:48.

    The flight takes about 9h 08m.

  • Which cabin classes can I book on flights from Houston to London Heathrow Airport?

    Three cabin classes are available on flights from Houston to London Heathrow Airport:

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Houston to London Heathrow Airport?

    A direct flight from Houston to London Heathrow Airport takes 9h 08m, covering 4,833 miles.

  • Do I need a passport to fly from Houston to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Houston to London Heathrow Airport flight?

    Return flights from Houston to London Heathrow Airport range from £575 to £933, with an average of £729 over the past 12 months. Anything below £575 counts as a good deal.

  • How expensive are last-minute Houston to London Heathrow Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 19% above the £729 route average. Book 21 weeks before departure for the lowest fares.

  • How much can I save by having a stopover when flying from Houston to London Heathrow Airport?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average £455 return via Atlanta Hartsfield-Jackson (ATL), compared with £750 for direct.

  • What is the standard checked bag allowance on flights from Houston to London Heathrow Airport?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £27–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • How are flight departures from Houston to London Heathrow Airport spread across the day?

    Afternoon is the busiest departure period on Houston to London Heathrow Airport flights, with 50% leaving in that window. Evening departures account for 25%, Night flights for 25%, and Morning flights for 0%.

  • Which airlines offer Wi-Fi on Houston to London Heathrow Airport flights?

    American Airlines is the only airline on the Houston to London Heathrow Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

  • Which car hire options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Houston to London Heathrow Airport?

    Flights from Houston to London Heathrow Airport may depart from several airports in Houston area, including Houston Hobby (HOU) and Houston George Bush Intcntl (IAH). Flights usually arrive at London Heathrow (LHR).

  • What time of day has the fewest delays on flights from Houston to London Heathrow Airport?

    Night flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed on the route from Houston to London Heathrow Airport?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Houston to London Heathrow Airport route, 20% of flights were delayed in the past three months, with delays averaging 2h 33m.

  • Which airports do connecting flights from Houston to London Heathrow Airport pass through?

    One-stop flights from Houston to London Heathrow Airport most commonly connect through:

    • Istanbul (IST) – 30% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 25% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 9% of one-stop connections
    • Amsterdam Schiphol (AMS) – 8% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston to London Heathrow Airport?

    Yes. Flexible dates can save you up to 15% on flights from Houston to London Heathrow Airport. Wednesday is the cheapest departure day at £682 return on average, while Monday is the most expensive at £799, a difference of £117.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Houston to London Heathrow Airport?

    2 airlines operate flights between Houston and London Heathrow Airport. The airlines offering direct flights on this route include:

    • United Airlines
    • British Airways

  • How much time can I save by choosing a different stopover airport from Houston to London Heathrow Airport?

    Flying via Washington, D.C. Dulles Intl (IAD) gives the shortest average 1-stop total travel time of 12h 46m, compared to 12h 47m via Dallas/Fort Worth (DFW) and 12h 53m via Boston Logan Intl (BOS).

  • What is the time difference between Houston and London Heathrow Airport?

    London Heathrow Airport is 5 hours ahead of Houston (British Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London Heathrow Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Houston to London Heathrow Airport flights?

    Among airlines operating Houston to London Heathrow Airport flights:

    • British Airways: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers free seat selection
    • Iberia: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Houston to London Heathrow Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • British Airways: a cabin bag and a checked bag in Economy class
    • United Airlines: a cabin bag and a checked bag in Economy class
    • American Airlines: a cabin bag and a checked bag in Economy class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Houston to London Heathrow Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average £682, about £117 less than Monday fares (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 21 weeks before you fly. On this route, that window historically saves about 20% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston to London Heathrow Airport trip for January. Fares historically average £525 return in that month – typically £504 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with British Airways. Over the past three months, 85% of British Airways flights from Houston to London Heathrow Airport arrived on time, slightly above the route average of 80%. When flights on this route arrive late, they're delayed by an average of 2h 33m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Atlanta Hartsfield-Jackson Airport (ATL) can be cheaper than flying direct. The cheapest stopover option averages £455 return on this route – about £295 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

Prefer to fly direct from Houston to London?

 
Find which airlines fly direct from Houston to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Houston to London Heathrow

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

Direct returns

London Heathrow to Houston

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

More options for your flight from Houston to Heathrow

Complete your trip to London with a hotel stay or car hire

Car hire in London
Hotels in London
Holidays in London