Cheap flights from Dallas/Fort Worth Airport to London from £247

In general, September is the cheapest month to fly from Dallas/Fort Worth Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £568. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Dallas/Fort Worth Airport averaging around £588.

On average, the least expensive day to fly to London Heathrow Airport from Dallas/Fort Worth Airport is on a Monday. momondo users have found tickets for Monday departures for as low as £603. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £815.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Dallas/Fort Worth Airport to London Heathrow Airport in the afternoon for as low as £675. 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 evening when prices are £676 on average. Flights to London Heathrow Airport from Dallas/Fort Worth Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Dallas/Fort Worth Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £717 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 Dallas/Fort Worth Airport for as low as £596 on momondo.

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

No. A direct flight is the cheapest option for a flight between Dallas/Fort Worth Airport to London Heathrow Airport.

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

Historically, on average around 25% 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 164 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.

Wednesday 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.

Montreal (YUL) was the most common stop: 43% of momondo users choosing one-stop flights on this route connected there.

Flights via Houston (IAH) offer the lowest average return price of £361.

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 11h 14m.

Houston (IAH) has the shortest average stopover time for this route: 1h 27m.

28 flights are operational daily from Dallas/Fort Worth Airport to London Heathrow Airport as of March 2026. The most popular departure time for this route is 21:00, with 81% of flights per day taking off in the evening.

199 flights are operational weekly from Dallas/Fort Worth Airport to London Heathrow Airport as of March 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.