Cheap flights from Dallas to London from £234

The cheapest month to fly to London from Dallas is in October. Flight prices, which tend to average around £542, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Dallas averaging around £566.

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £604. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Dallas to London for around £843.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £681. Flights in the evening are often more expensive, with an average ticket price of £688.

Fly from Dallas/Fort Worth to London Heathrow for the best Dallas - London flight prices

You are more likely to see cheaper flights to London from Dallas when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £723 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 Dallas for as low as £600 on momondo.

There are 3 cabin classes available to choose from on Dallas to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, Delta, and Virgin Atlantic are the most popular carriers operating from Dallas to London

British Airways, Iberia and American Airlines are the top three most popular airlines that fly to London from Dallas according to our data. British Airways is the first choice among our users, with 47% 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 24% of flights between Dallas and London have experienced a delay on any given week. The average delay length over the past 12 months has been 166 minutes.

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

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

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 23% of their flights experiencing any sort of delay.

As of March 2026, there are 24 flights per day flying from Dallas to London. The most common time of day flights depart is 22:00, with 68% of flights taking off in the evening.

As of March 2026, 174 flights take off from Dallas and land in London each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.