Cheap flights from London Heathrow Airport to Dallas from $645

The cheapest month to fly to Dallas/Fort Worth Airport from London Heathrow Airport is in November. Flight prices, which tend to average around $972, are often lower during this time because this is during the off-season. If you’re not able to fly to Dallas/Fort Worth Airport in November, then September is your next best option. Flight prices from London Heathrow Airport to Dallas/Fort Worth Airport during September average around $990.

On average, the least expensive day to fly to Dallas/Fort Worth Airport from London Heathrow Airport is on a Saturday. momondo users have found tickets for Saturday departures for as low as $1,084. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Dallas/Fort Worth Airport for around $1,287.

Flying to Dallas/Fort Worth Airport from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,157 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,213 on average. Flights to Dallas/Fort Worth Airport from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Dallas/Fort Worth Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas/Fort Worth Airport for around $1,169 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas/Fort Worth Airport from London Heathrow Airport for as low as $1,061 on momondo.

There are 4 cabin classes available to choose from on London Heathrow Airport to Dallas/Fort Worth 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 43% on your flight if you consider stops on a London Heathrow Airport to Dallas/Fort Worth Airport flight.

As of July 2026, prices for London Heathrow Airport to Dallas/Fort Worth Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

Lufthansa, United Airlines, and British Airways are the most popular carriers operating from London Heathrow to Dallas/Fort Worth

British Airways, American Airlines and JetBlue are the top three most popular airlines that fly to Dallas/Fort Worth Airport 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/Fort Worth Airport. Keep in mind that there are 4 different airlines that fly to Dallas/Fort Worth Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% 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 156 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening 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 11% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Dallas/Fort Worth Airport is 27 per day as of July 2026. The most frequent departure time is 8:00AM, with 59% of daily flights leaving in the afternoon.

The number of flights available between London Heathrow Airport and Dallas/Fort Worth Airport is 189 per week as of July 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.