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Cheap flights from London Heathrow Airport to Dallas from £400

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DFW
25 Dec — 1 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Dallas are usually found in January or February, booked 85 days in advance, depart on a Wednesday or Monday and return on a Monday

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Cheapest flights from Heathrow to Dallas
Explore the most affordable flight options available from Heathrow to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 November 2025.

Thu 11/1213:25LHR - DFW
2 stops24h 36mMultiple Airlines
Mon 12/113:08DFW - LHR
2 stops35h 22mMultiple Airlines
Deal found 24/11£579
Wed 10/1212:15LHR - DFW
2 stops25h 49mMultiple Airlines
Sun 14/1205:44DFW - LHR
2 stops31h 46mMultiple Airlines
Deal found 24/11£596
Sat 6/1207:30LHR - DFW
2 stops22h 38mMultiple Airlines
Fri 23/113:40DFW - LHR
2 stops37h 40mMultiple Airlines
Deal found 24/11£601
Fri 12/1212:15LHR - DFW
3 stops29h 10mMultiple Airlines
Tue 16/1211:33DFW - LHR
2 stops25h 57mMultiple Airlines
Deal found 23/11£614
Mon 15/1206:40LHR - DFW
2 stops32h 25mScandinavian Airlines
Sun 11/107:35DFW - LHR
2 stops26h 25mScandinavian Airlines
Deal found 24/11£617
Thu 11/1219:30LHR - DAL
2 stops34h 26mScandinavian Airlines
Mon 12/115:57DAL - LHR
2 stops18h 03mScandinavian Airlines
Deal found 24/11£618
Tue 9/1214:10LHR - DFW
2 stops25h 04mMultiple Airlines
Sun 14/1205:50DFW - LHR
2 stops19h 10mMultiple Airlines
Deal found 24/11£630
Thu 11/1207:05LHR - DFW
3 stops23h 21mScandinavian Airlines
Mon 12/116:00DFW - LHR
2 stops18h 00mScandinavian Airlines
Deal found 24/11£631
Wed 10/1212:15LHR - DFW
2 stops25h 49mMultiple Airlines
Fri 12/1220:03DFW - LHR
3 stops32h 47mMultiple Airlines
Deal found 24/11£634
Tue 9/1209:20LHR - DFW
1 stop32h 45mJetBlue
Sun 14/1213:00DFW - LHR
1 stop11h 55mJetBlue
Deal found 24/11£636
Thu 11/1207:05LHR - DFW
3 stops23h 21mScandinavian Airlines
Sun 11/107:35DFW - LHR
2 stops19h 45mScandinavian Airlines
Deal found 22/11£637
Fri 12/1206:40LHR - DAL
2 stops23h 16mScandinavian Airlines
Mon 12/115:57DAL - LHR
2 stops18h 03mScandinavian Airlines
Deal found 24/11£673

Cheap flight deals from Heathrow to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Dallas (A78). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 November 2025.

Round-trip from

£547

One-way from

£400

Popular in

July

Cheapest in

January

Average price

£710
Icelandair
  • Icelandair
  • 26/2-2/3
  • 2 total stops
  • 44h 39m total
  • London to Dallas
Search Deals
22/1
  • 22/1
  • 1 total stop
  • 17h 59m total
  • London to Dallas
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Dallas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Dallas that are best for you.

Fly from

Heathrow

Fly to

Dallas

Route

Depart

Return

Price

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Sat 31/1

09:55-23:52

3 stops43h 57m

Dallas/Fort Worth

Tue 3/3

09:32-17:30

2 stops25h 58m

£599

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Wed 22/4

07:05-21:01

2 stops19h 56m

Dallas/Fort Worth

Sat 25/4

08:45-18:50

2 stops28h 05m

£616

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Tue 21/4

10:20-23:31

2 stops19h 11m

Dallas/Fort Worth

Sat 25/4

08:45-09:35

2 stops18h 50m

£616

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Thu 22/1

06:40-22:11

2 stops21h 31m

Dallas/Fort Worth

Thu 29/1

07:25-16:00

2 stops26h 35m

£627

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Mon 12/1

06:40-21:43

2 stops21h 03m

Dallas/Fort Worth

Mon 26/1

07:35-16:00

2 stops26h 25m

£627

LondonDallas

LHR - DAL

LHRDAL

London Heathrow

Fri 16/1

06:40-22:29

3 stops21h 49m

Dallas Love Field

Sat 24/1

15:57-21:40

2 stops23h 43m

£634

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Thu 11/12

06:40-22:09

2 stops21h 29m

Dallas/Fort Worth

Wed 14/1

07:35-16:00

2 stops26h 25m

£638

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Sun 11/1

19:30-21:43

2 stops32h 13m

Dallas/Fort Worth

Wed 14/1

07:35-17:40

2 stops28h 05m

£672

LondonDallas

LHR - DAL

LHRDAL

London Heathrow

Sun 1/2

12:15-23:05

2 stops16h 50m

Dallas Love Field

Tue 24/2

10:35-10:50

2 stops18h 15m

£728

LondonDallas

LHR - DFW

LHRDFW

London Heathrow

Thu 19/2

15:15-18:40

1 stop33h 25m

Dallas/Fort Worth

Thu 26/2

20:35-21:05

1 stop18h 30m

£743

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 38 results
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Best time to book a flight from Heathrow to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Dallas

How far ahead should I book a flight from London Heathrow Airport to Dallas?

Use this chart to determine the optimal time to book a return flight from Heathrow to Dallas. Price data was last updated on 21 November 2025.

The best time to book flights from London Heathrow Airport to Dallas is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Dallas?

Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Dallas (average of £234). Flying from London Heathrow Airport to Dallas in October is currently the most expensive (average of £579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to DFW?

Find hourly flight availability from Heathrow to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 November 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Dallas is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 24% on airfare.

What is the cheapest day to fly from London Heathrow Airport to Dallas?

Use this chart to determine the cheapest time to fly return from Heathrow to Dallas. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Dallas flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Dallas

Explore weekly flight availability from Heathrow to Dallas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 25 November 2025.

The most flights from LHR to A78 are scheduled on a Monday (28 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (16 on average).

How often are flights from London to Dallas delayed?

About 14% of weekly flights between London and Dallas have experienced delays in the past year, with the average delay time being 150 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Sunday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, American Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dallas. Reviews last updated 25 November 2025.
Read reviews from past customers who have flown with Finnair, Virgin Atlantic, andIberia from London Heathrow Airport to Dallas. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Virgin Atlantic
7.5
Good
675 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
3,033 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Lufthansa
6.8
Okay
7,583 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,535 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Dallas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Heathrow Airport to Dallas?

    Departing from London Heathrow Airport to Dallas will take you 17h 17m. The distance between London Heathrow Airport and Dallas is about 4732 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Dallas round-trip?

    According to our current data, Lufthansa (£442), Virgin Atlantic (£462), and JetBlue (£474) offers the cheapest pricing from London Heathrow Airport to Dallas. You may be able to fly from London Heathrow Airport to Dallas for 43% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from London Heathrow Airport to Dallas one-way?

    £438 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Delta and Virgin Atlantic, with prices starting from £539 and £540, respectively.

  • What are the most reliable airlines from London Heathrow Airport to Dallas?

    The top 3 most reliable airlines when flying from London Heathrow Airport to Dallas are Malaysia Airlines (98%), Royal Jordanian (90%) and American Airlines (84%).

  • What are the cheapest flights from London Heathrow Airport to Dallas?

    While on average a flight from London Heathrow Airport to Dallas is generally £1,871, our data shows the cheapest flight currently is £448. When looking at the most popular route, (London Heathrow - Dallas/Fort Worth), you can expect to pay £567 for that flight.

  • Can I find deals for flights from Heathrow to Dallas that include hotel bookings?

    Yes. In addition to deals on Heathrow to Dallas flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Dallas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Dallas.

  • Can I find deals for business class flights from Heathrow to Dallas?

    Yes. Cheapflights offers flight deals from Heathrow to Dallas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Dallas?

    Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Dallas (average of £234). Flying from London Heathrow Airport to Dallas in October is currently the most expensive (average of £579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Heathrow to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
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Heathrow to McAllen flights
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Top 10 airlines flying from Heathrow to Dallas

Discover the top 10 airlines that operate flights from Heathrow to Dallas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 November 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£442Average£592FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£462Average£775FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£474Average£599FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest£476Average£695FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IcelandairCheapest£495Average£647FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£498Average£656FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Scandinavian AirlinesCheapest£510Average£746FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air FranceCheapest£526Average£861FlexibilityNo cancel feeOn-time77%
Search Air France flights
IberiaCheapest£554Average£847FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£576Average£797FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Dallas?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Dallas. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Dallas?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Dallas for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Dallas with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Dallas, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Dallas become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Dallas flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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