Question 1

Which airline has the best punctuality record on Dallas to London flights?

Accepted Answer

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 22% of their flights experiencing any sort of delay.

Question 2

How far in advance should I book a flight to London Heathrow Airport?

Accepted Answer

You are more likely to see cheaper flights to London Heathrow Airport from Dallas when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £694 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 for as low as £616 on momondo.

Question 3

What is the cheapest month to fly to London Heathrow Airport?

Accepted Answer

In general, September is the cheapest month to fly from Dallas to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £566. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Dallas averaging around £575.

Question 4

How often are flights from Dallas to London delayed?

Accepted Answer

Historically, on average around 23% 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 163 minutes.

Question 5

What cabin class options are available on Dallas to London Heathrow flights?

Accepted Answer

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

Question 6

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Accepted Answer

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 to London Heathrow Airport in the afternoon for as low as £663. 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 £681 on average. Flights to London Heathrow Airport from Dallas in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 7

What is the most punctual flight time for Dallas to London flights?

Accepted Answer

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.

Question 8

Which airlines fly to London Heathrow Airport?

Accepted Answer

British Airways, Iberia and Finnair are the top three most popular airlines that fly to London Heathrow Airport from Dallas according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Question 9

What is the cheapest day to depart on your flight to London Heathrow Airport?

Accepted Answer

On average, the least expensive day to fly to London Heathrow Airport from Dallas is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £594. 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 £790.

Question 10

What is the cheapest airline that flies from Dallas to London Heathrow?

Accepted Answer

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

Question 11

How many flights depart from Dallas to London Heathrow Airport on average per week?

Accepted Answer

As of January 2026, 198 flights take off from Dallas and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.

Question 12

How many flights depart from Dallas to London Heathrow Airport on average per day?

Accepted Answer

As of January 2026, there are 28 flights per day flying from Dallas to London Heathrow Airport. The most common time of day flights depart is 20:00, with 60% of flights taking off in the evening.

Question 13

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Monday 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.

Question 14

What is the cheapest Dallas to London Heathrow flight route?

Accepted Answer

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

Question 15

When did momondo last update prices for flights from Dallas to London Heathrow Airport?

Accepted Answer

Prices for flights from Dallas to London Heathrow Airport are refreshed on a daily basis.

Question 16

How many operators does momondo search for flights from Dallas to London Heathrow Airport?

Accepted Answer

The number of operators available for flights from Dallas to London Heathrow Airport is 5 as of January 2026.

Question 17

How old do you have to be to fly from Dallas to London Heathrow Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dallas to London Heathrow Airport.

Question 18

What documentation or ID do you need to fly to London Heathrow Airport?

Accepted Answer

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Fastest flight time	9h 00m
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Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £457	Free Cancellation	Rating 6.7 7,690 reviews	Search British Airways flights
Finnair	PriceFrom £459	Free Cancellation	Rating 7.6 1,353 reviews	Search Finnair flights
American Airlines	PriceFrom £474	Free Cancellation	Rating 7.2 11,169 reviews	Search American Airlines flights
Air Canada	PriceFrom £497	Free Cancellation	Rating 7.1 10,644 reviews	Search Air Canada flights
Iberia	PriceFrom £539	Free Cancellation	Rating 7.0 3,094 reviews	Search Iberia flights

Cheap flights from Dallas to London from £204

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How to get the cheapest flight ticket from Dallas to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Dallas to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

What cabin class options are available on Dallas to London Heathrow flights?

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

What is the cheapest airline that flies from Dallas to London Heathrow?

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

Which airlines fly to London Heathrow Airport?

How often are flights from Dallas to London delayed?

Historically, on average around 23% 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 163 minutes.

What is the most punctual flight time for Dallas to London flights?

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.

What day of the week experiences the fewest flight delays on this route?

Monday 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.

Which airline has the best punctuality record on Dallas to London flights?

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 22% of their flights experiencing any sort of delay.

How many flights depart from Dallas to London Heathrow Airport on average per day?

As of January 2026, there are 28 flights per day flying from Dallas to London Heathrow Airport. The most common time of day flights depart is 20:00, with 60% of flights taking off in the evening.

How many flights depart from Dallas to London Heathrow Airport on average per week?

As of January 2026, 198 flights take off from Dallas and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.

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What documentation or ID do you need to fly to London Heathrow Airport?

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