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Cheap flights from McAllen to London Heathrow Airport from £454

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from McAllen to Heathrow

Enter your travel dates to find the best prices.

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 12 December 2025.

Wed 31/1216:55MFE - LHR
1 stop11h 20mUnited Airlines
Fri 9/111:10LHR - MFE
2 stops40h 47mUnited Airlines
Deal found 10/12£606
Wed 31/1214:05MFE - LHR
1 stop14h 10mLufthansa
Fri 9/112:05LHR - MFE
1 stop15h 52mLufthansa
Deal found 10/12£700
Sun 14/1211:53MFE - LHR
1 stop16h 07mBritish Airways
Tue 16/1216:30LHR - MFE
1 stop22h 27mBritish Airways
Deal found 10/12£972

Find 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 12 December 2025.

Round-trip from

£454

Popular in

December

Cheapest in

August

Average price

£1,202
Lufthansa
  • Lufthansa
  • 19/1-27/1
  • 3 total stops
  • 34h 52m total
  • McAllen to London
Search Deals
High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 5% potential price decrease (£30 potential savings vs. average return price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 December 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

Mon 26/1

17:25-07:10

2 stops31h 45m

London Heathrow

Tue 3/2

08:30-21:57

2 stops19h 27m

£473

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 21/1

07:00-10:15

1 stop21h 15m

London Heathrow

Thu 29/1

14:30-21:57

2 stops37h 27m

£473

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 19/1

17:25-07:10

2 stops31h 45m

London Heathrow

Tue 27/1

09:30-21:57

2 stops18h 27m

£473

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 30/1

07:00-10:15

1 stop21h 15m

London Heathrow

Tue 3/2

13:00-21:57

2 stops38h 57m

£477

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 26/1

12:05-07:30

1 stop13h 25m

London Heathrow

Tue 3/2

12:05-21:57

1 stop15h 52m

£483

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 19/1

12:05-07:30

1 stop13h 25m

London Heathrow

Tue 27/1

12:05-21:57

1 stop15h 52m

£483

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 21/1

15:26-10:00

1 stop12h 34m

London Heathrow

Thu 29/1

08:20-18:17

1 stop15h 57m

£485

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 20/4

18:13-14:25

1 stop14h 12m

London Heathrow

Thu 30/4

06:10-18:26

2 stops18h 16m

£485

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 24/3

09:37-08:15

1 stop17h 38m

London Heathrow

Tue 31/3

09:15-08:57

2 stops29h 42m

£488

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/3

19:05-11:40

2 stops35h 35m

£460

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 17 results
1
2

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 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 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 £444). Flying from McAllen to London Heathrow Airport in December is currently the most expensive (average of £1,202). 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.

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?

    McAllen Miller Intl (MFE) is the airport you will fly out of if you book a flight from McAllen to London Heathrow. You should not have trouble finding flights to London Heathrow from Miller Intl; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the McAllen airport to London Heathrow. It is only a 2.0 mi journey to Miller Intl (MFE) 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 . The distance between McAllen and London Heathrow Airport is about 5135 mi.

  • 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 holiday 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 £444). Flying from McAllen to London Heathrow Airport in December is currently the most expensive (average of £1,202). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Northampton
Hounslow
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Watford
Hayes
Crawley
Winchester
Swindon
Deal
Bedford
Romford
Chichester

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Fly with Cheapflights

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

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

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

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

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

Yes! Start tracking prices for McAllen to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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