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Cheap flights from Houston to London Heathrow

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 Airport

Looking for a cheap last-minute deal or the best return flight from Houston to London Heathrow Airport? If you want to travel next month, return fares start from $932. Find the lowest prices on one-way and return tickets right here.
London.$408 per passenger.Departing Tue, 5 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue, 5 May, arriving in London Heathrow.Price includes taxes and charges.From $408, select.
London.$425 per passenger.Departing Mon, 3 Aug.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Houston George Bush Intercntl. on Mon, 3 Aug, arriving in London Heathrow.Price includes taxes and charges.From $425, select.
London.$429 per passenger.Departing Tue, 14 Apr.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Houston George Bush Intercntl. on Tue, 14 Apr, arriving in London Heathrow.Price includes taxes and charges.From $429, select.
London.$439 per passenger.Departing Mon, 26 Oct.One-way flight with Air France.Outbound indirect flight with Air France, departs from Houston George Bush Intercntl. on Mon, 26 Oct, arriving in London Heathrow.Price includes taxes and charges.From $439, select.
London.$444 per passenger.Departing Tue, 29 Dec.One-way flight with Air France.Outbound indirect flight with Air France, departs from Houston George Bush Intercntl. on Tue, 29 Dec, arriving in London Heathrow.Price includes taxes and charges.From $444, select.
London.$446 per passenger.Departing Tue, 3 Nov.One-way flight with Air France.Outbound indirect flight with Air France, departs from Houston George Bush Intercntl. on Tue, 3 Nov, arriving in London Heathrow.Price includes taxes and charges.From $446, select.
London.$448 per passenger.Departing Wed, 30 Sep.One-way flight with Finnair.Outbound indirect flight with Finnair, departs from Houston George Bush Intercntl. on Wed, 30 Sep, arriving in London Heathrow.Price includes taxes and charges.From $448, select.
London.$468 per passenger.Departing Fri, 5 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Fri, 5 Jun, arriving in London Heathrow.Price includes taxes and charges.From $468, select.
London.$486 per passenger.Departing Wed, 29 Jul.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Houston George Bush Intercntl. on Wed, 29 Jul, arriving in London Heathrow.Price includes taxes and charges.From $486, select.
London.$540 per passenger.Departing Wed, 18 Mar.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Houston George Bush Intercntl. on Wed, 18 Mar, arriving in London Heathrow.Price includes taxes and charges.From $540, select.
London.$564 per passenger.Departing Mon, 12 Oct.One-way flight with Finnair.Outbound direct flight with Finnair departs from Houston George Bush Intercntl. on Mon, 12 Oct, arriving in London Heathrow.Price includes taxes and charges.From $564, select.
London.$567 per passenger.Departing Tue, 28 Apr.One-way flight with Finnair.Outbound direct flight with Finnair departs from Houston George Bush Intercntl. on Tue, 28 Apr, arriving in London Heathrow.Price includes taxes and charges.From $567, select.
London.$567 per passenger.Departing Tue, 8 Sep.One-way flight with Finnair.Outbound direct flight with Finnair departs from Houston George Bush Intercntl. on Tue, 8 Sep, arriving in London Heathrow.Price includes taxes and charges.From $567, select.
London.$569 per passenger.Departing Sun, 29 Mar.One-way flight with Finnair.Outbound direct flight with Finnair departs from Houston George Bush Intercntl. on Sun, 29 Mar, arriving in London Heathrow.Price includes taxes and charges.From $569, select.
London.$570 per passenger.Departing Tue, 10 Nov.One-way flight with Finnair.Outbound direct flight with Finnair departs from Houston George Bush Intercntl. on Tue, 10 Nov, arriving in London Heathrow.Price includes taxes and charges.From $570, select.
London.$574 per passenger.Departing Mon, 8 Mar.One-way flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Houston George Bush Intercntl. on Mon, 8 Mar, arriving in London Heathrow.Price includes taxes and charges.From $574, 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 May.
Mar
from $540
Apr
from $429
May
from $408
Jun
from $468
Jul
from $486
Aug
from $425
Sep
from $448
Oct
from $439
Nov
from $446
Dec
from $444
Jan
from $585
Feb
from $582

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.

London City

12km from central London
Closest
from $487
Search flights

London Heathrow

23km from central London
from $408
Search flights

London Gatwick

40km from central London
Cheapest
from $271
Search flights

London Luton

45km from central London
from $397
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London Stansted

49km from central London
from $312
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London Southend

57km from central London
from $499
Search flights

Houston to London: Flight information

The things to know before you go.
Cheapest flight found$408
Cheapest month to flyMay
Average flight time9 hrs, 13 mins
Most popular airlineAir Canada
Average flights per week166

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 $929. 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, United and SWISS fly direct from Houston to London Heathrow.
As of March 2026, there are 166 flights per week flying from Houston to London Heathrow.
The cheapest month to fly from Houston to London Heathrow is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to London Heathrow Airport on Wednesday, 7 October 2026.
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.
The cheapest airline that flies to London Heathrow is Finnair .

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

  • Planning your trip starts with working out where you'll leave from in Houston. Houston George Bush Intercontinental Airport (IAH) is the city's main base, so check out your options for reserving a flight from Houston to London Heathrow Airport (LHR) out of here.

  • 9 hours 15 minutes is the average duration of a direct Houston to London Heathrow Airport flight.

  • London Heathrow Airport is located in London. The city operates on the UTC+0 timezone and is six hours ahead of Houston.

  • Pick from 27 direct services a week between Houston George Bush Intercontinental Airport (IAH) and London Heathrow Airport (LHR). This is the most popular route when departing from Houston.

  • Give yourself plenty of time to get on your flight from Houston to LHR. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • July is a busy month for travelling. If you're heading away then or around a major holiday like July Fourth, get there even earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Houston

Houston George Bush Intercontinental Airport (IAH)

  • Fly without interruptions from Houston George Bush Intercontinental Airport (IAH). Nonstop flights from Houston to London Heathrow Airport (LHR) operate from here.

  • At IAH, there's a range of carriers that offer direct flights from Houston to London Heathrow Airport, including:

  • The majority of passengers choose to fly with United from IAH to LHR.

  • Among carriers on this route, Aer Lingus has the highest rate of on-time arrivals.

  • Think about adding a stopover to find cheap flights from Houston to LHR. Simply deselect 'Direct flights only' when searching for departures from Houston George Bush Intercontinental Airport (IAH). Take a break from travelling at one of these airports:

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Detroit Metropolitan Wayne County Airport (DTW)

    • Nashville International Airport (BNA)

  • Travelling from central Houston to IAH takes around 1 hour 10 minutes on public transport. If you drive, ride-share or grab a taxi, you'll cover the 40 kilometres in 30 minutes or so, depending on traffic conditions.

  • Catching an early flight from Houston to London Heathrow Airport? Avoid the stress of rushing to the terminal (and get a little more snooze time) by choosing one of these stays near Houston George Bush Intercontinental Airport:

  • When it comes to the on-time performance of Houston George Bush Intercontinental Airport, data shows 79% of flights stick to their scheduled arrival time.

  • IAH's address is 16930 JFK Boulevard.

Houston Hobby Airport (HOU)

  • Check a new destination off your list or just take some time to unwind with a stopover. If you'd like to split up your flight from Houston to London Heathrow Airport, here's where you can stop when heading out from Houston Hobby Airport:

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Dallas Fort Worth International Airport (DFW)

    • Orlando International Airport (MCO)

  • HOU is about 19 kilometres from central Houston. It takes 20 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 50 minutes.

  • Flying out early in the morning? You might like to check in to one of these hotels near Houston Hobby Airport the day before your Houston to LHR flight:

  • Houston Hobby Airport has an on-time performance of 79%. This figure highlights how often flights that leave from this airport make it to their destination on schedule.

  • The address for HOU is 7800 Airport Boulevard.

About London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • From London Heathrow Airport, central London is around 24 kilometres away. It takes about 45 minutes to reach the city centre by car.

  • If you're taking public transport, expect a journey time of about 25 minutes.

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

  • $408 is the best price for a one-way ticket from Houston to London Heathrow Airport. Return flights start at $929. These fares may change depending on availability and demand.

  • To snap up cheap flights from Houston to LHR, book your plane ticket three months ahead of your planned departure.

  • August is when you're most likely to find a bargain on a Houston to London Heathrow Airport ticket. If you want to travel during a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • Be the first to know about deals for plane tickets from Houston to LHR by creating a Price Alert. We'll send you an email or push notification on the app when fares go down.

  • Save on your flight from Houston to London Heathrow Airport by using filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

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

  • It's time to figure out when to book your flight from Houston to London Heathrow Airport (LHR). July is the peak month for travel to London. If you like your getaways a little more chill, think about going in January.

  • Lock in a Houston to LHR plane ticket departing in July if you want to visit the city during its warmest month. You can expect temperatures in London to range from 11ºC (52ºF) to 26ºC (79ºF).

  • January sees temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for cheap tickets from Houston to London Heathrow Airport around that time if you want to travel in cooler conditions.

More about London

  • Once you've booked your flight from Houston to London Heathrow Airport, find a hotel that's got location and comfort covered. Make one of these accommodation options your base for exploring London:

  • All great journeys should include a little sightseeing. The British Museum, Westminster Abbey and Big Ben are must-visits when exploring London.

Explore more of the United Kingdom

  • London will leave a lasting impression, but there are so many other corners of the United Kingdom you should also see. Around 257 kilometres northwest of London, a trip to Manchester will keep you busy. Start with leading attractions like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.

  • Birmingham is another essential stop in the United Kingdom and is around 153 kilometres northwest of London. No trip is complete without seeing Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

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.