Cheap flights from London Heathrow Airport to Dallas from $499

If you are unable to visit Dallas during the month of November, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around $947.

On average, the least expensive day to fly to Dallas from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $1,026. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,180.

Flying to Dallas from London Heathrow Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,052 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to Dallas, so prices are often more expensive at around $1,140 per ticket.

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

You are more likely to see cheaper flights to Dallas from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas for around $1,100 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas from London Heathrow Airport for as low as $942 on momondo.

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

WestJet, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers operating from London Heathrow to Dallas

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to Dallas from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Dallas. Keep in mind that there are 5 different airlines that fly to Dallas on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between London and Dallas have experienced a delay on any given week. The average delay length over the past 12 months has been 152 minutes.

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

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

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Dallas is 27 per day as of April 2026. The most frequent departure time is 4:00PM, with 72% of daily flights leaving in the afternoon.

As of April 2026, 190 flights take off from London Heathrow Airport and land in Dallas each week. The most common flight departure day for this route is Sun, with 15% of weekly flights taking off on this day.