Cheap flights from Houston George Bush Intcntl Airport to London from £305

In general, October is the cheapest month to fly from Houston George Bush Intcntl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £515. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Houston George Bush Intcntl Airport averaging around £522.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Houston George Bush Intcntl Airport to London Heathrow Airport in the evening for as low as £557. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £577 on average. Flights to London Heathrow Airport from Houston George Bush Intcntl Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Houston George Bush Intcntl to London Heathrow for the best Houston George Bush Intcntl - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £659 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Houston George Bush Intcntl Airport for as low as £601 on momondo.

There are 4 cabin classes available to choose from on Houston George Bush Intcntl Airport to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 2% on your flight if you consider stops on a Houston George Bush Intcntl Airport to London Heathrow Airport flight.

United Airlines and Delta are the most popular carriers operating from Houston George Bush Intcntl to London Heathrow

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport from Houston George Bush Intcntl Airport according to our data. British Airways is the first choice among our users, with 44% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between Houston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

17 flights are operational daily from Houston George Bush Intcntl Airport to London Heathrow Airport as of July 2026. The most popular departure time for this route is 20:00, with 61% of flights per day taking off in the evening.

The number of flights available between Houston George Bush Intcntl Airport and London Heathrow Airport is 124 per week as of July 2026. The most frequent departure day is Thu, with 18% of weekly flights leaving on this day.