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$524+ Cheap flights from McAllen (MFE) to Heathrow (LHR)

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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from McAllen to Heathrow

Cheapest flights from McAllen to Heathrow
Explore the most affordable flight options available from McAllen to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:00 amMFE - LHR
1 stop21h 15mUnited Airlines
Wed 12/1710:00 amLHR - MFE
1 stop15h 56mUnited Airlines
Deal found 10/27$649
This Booking.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:37 amMFE - LHR
1 stop18h 23mBritish Airways
Wed 12/174:30 pmLHR - MFE
1 stop22h 27mBritish Airways
Deal found 10/26$677
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:15 pmMFE - LHR
1 stop17h 00mUnited Airlines
Sun 11/22:30 pmLHR - MFE
2 stops37h 29mUnited Airlines
Deal found 10/27$726
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:06 pmMFE - LHR
1 stop11h 24mUnited Airlines
Sat 11/2210:00 amLHR - MFE
1 stop14h 07mUnited Airlines
Deal found 10/28$740
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:00 amMFE - LHR
2 stops41h 30mAir Canada
Sat 11/221:00 pmLHR - MFE
2 stops25h 54mAir Canada
Deal found 10/28$753
This Booking.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:53 amMFE - LHR
1 stop12h 57mBritish Airways
Fri 12/194:30 pmLHR - MFE
1 stop22h 27mBritish Airways
Deal found 10/28$864
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:00 amMFE - LHR
2 stops21h 25mUnited Airlines
Fri 12/194:20 pmLHR - MFE
2 stops22h 39mUnited Airlines
Deal found 10/28$876
This deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:10 pmMFE - LHR
1 stop13h 20mUnited Airlines
Tue 12/3012:05 pmLHR - MFE
1 stop17h 20mUnited Airlines
Deal found 10/28$978
This deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:10 pmMFE - LHR
1 stop13h 20mUnited Airlines
Mon 12/2912:05 pmLHR - MFE
1 stop17h 20mUnited Airlines
Deal found 10/28$988

Cheap flight deals from McAllen to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from McAllen (MFE) to Heathrow (LHR). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$649
(United Airlines)

One-way from

$524
(United Airlines)

Popular in

June

Cheapest in

August

Average price

$1,049
Provider with most accurate pricing for McAllen Miller Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for McAllen Miller Intl-London Heathrow flights.
Search Deals
From McAllen Miller Intl to London Heathrow
Search Deals
One-way flight from McAllen Miller Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($278 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from McAllen to Heathrow 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 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from McAllen to London Heathrow Airport that are best for you.

Fly from

McAllen

Fly to

Heathrow

Route

Depart

Return

Price

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 12/10

7:00 am-10:15 am

1 stop21h 15m

London Heathrow

Wed 12/17

10:00 am-7:56 pm

1 stop15h 56m

$649

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 10/31

12:15 pm-10:15 am

1 stop17h 00m

London Heathrow

Sun 11/2

2:30 pm-9:59 pm

2 stops37h 29m

$726

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 11/14

2:06 pm-7:30 am

1 stop11h 24m

London Heathrow

Sat 11/22

10:00 am-6:07 pm

1 stop14h 07m

$740

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 11/14

7:00 am-6:30 am

2 stops41h 30m

London Heathrow

Sat 11/22

1:00 pm-8:54 am

2 stops25h 54m

$753

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 12/12

11:53 am-6:50 am

1 stop12h 57m

London Heathrow

Fri 12/19

4:30 pm-8:57 am

1 stop22h 27m

$864

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 12/12

7:00 am-10:25 am

2 stops21h 25m

London Heathrow

Fri 12/19

4:20 pm-8:59 am

2 stops22h 39m

$876

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 1/3

7:00 pm-11:20 am

2 stops34h 20m

London Heathrow

Fri 1/16

7:30 am-9:57 pm

2 stops20h 27m

$964

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 3/13

7:15 am-10:50 am

2 stops22h 35m

$524

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 3/13

7:15 am-6:30 am

2 stops42h 15m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Compare providers for flights from McAllen to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from McAllen to Heathrow in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on McAllen-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on McAllen-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from McAllen-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on McAllen-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for McAllen-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from McAllen to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from McAllen with our price prediction graph.
Estimated round-trip 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 McAllen to London Heathrow Airport

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

Currently, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of $617). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of $1,427). 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 MFE to LHR?

Find hourly flight availability from McAllen to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

When flying from McAllen to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 24% versus a flight in the evening.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated October 28, 2025.
See what other customers who have flown with United Airlines, American Airlines, and British Airways from McAllen to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,996 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,996 reviews
United Airlines
7.4
Good
8,996 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,033 reviews
United Airlines
7.4
Good
8,996 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,481 reviews
United Airlines
7.4
Good
8,996 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

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

  • What airport do you fly from for flights from McAllen to London Heathrow?

    Most people fly from McAllen Miller Intl (MFE) if they book a flight from McAllen to London Heathrow. On average, Miller Intl has 0 outbound flights to London Heathrow per day from 3 airlines. McAllen Miller Intl is conveniently located just 2.0 mi from McAllen’s city center.

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

    United Airlines can get you from McAllen to London Heathrow Airport in just under 21h 15m. Your travel time can differ by up to . There are 5135 mi between McAllen and London Heathrow Airport.

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

    Currently priced at $680, British Airways will fly you from McAllen to London Heathrow Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $682 and $880, respectively. British Airways is currently priced 29% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from McAllen to Heathrow 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 McAllen to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of $617). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of $1,427). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

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Top 3 airlines flying from McAllen to Heathrow

Discover the top 3 airlines that operate flights from McAllen to Heathrow. 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 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$680Average$1,125FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$682Average$1,070FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$880Average$1,286FlexibilityNo cancel feeOn-time71%

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