Cheap flights from Houston to London from £370

The cheapest month to fly to London from Houston is in January. Flight prices, which tend to average around £274, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Houston averaging around £357.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £567. Flights in the afternoon are often more expensive, with an average ticket price of £580.

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

You are more likely to see cheaper flights to London from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £648 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Houston for as low as £595 on momondo.

Delta, United Airlines, and TAP AIR PORTUGAL are the most popular carriers operating from Houston to London

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from Houston according to our data. British Airways is the first choice among our users, with 50% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 different airlines that fly to London 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 148 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.

Thursday 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 17% of their flights experiencing any sort of delay.

As of June 2026, there are 18 flights per day flying from Houston to London. The most common time of day flights depart is 20:00, with 62% of flights taking off in the evening.

132 flights are operational weekly from Houston to London as of June 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.