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Cheap flights from McAllen to London Heathrow Airport from £464

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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 12 September 2025.

Round-trip from

£464

Popular in

June

Cheapest in

August

Average price

£517
United Airlines
  • United Airlines
  • 3/11-11/11
  • 3 total stops
  • 67h 37m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£149 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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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 12 September 2025.

Mon 3/1119:22MFE - LHR
1 stop30h 08mUnited Airlines
Tue 11/1114:30LHR - MFE
2 stops37h 29mUnited Airlines
Deal found 11/9£464
Wed 5/1107:00MFE - LHR
1 stop18h 30mUnited Airlines
Fri 14/1112:05LHR - MFE
1 stop14h 03mUnited Airlines
Deal found 11/9£481
Sun 30/1107:00MFE - LHR
1 stop18h 30mUnited Airlines
Mon 22/1210:00LHR - MFE
1 stop19h 25mUnited Airlines
Deal found 9/9£504
Mon 1/1205:25MFE - LHR
2 stops20h 25mDelta
Mon 22/1215:50LHR - MFE
2 stops26h 04mDelta
Deal found 9/9£506
Tue 2/1205:00MFE - LHR
1 stop20h 30mUnited Airlines
Mon 22/1210:00LHR - MFE
1 stop19h 25mUnited Airlines
Deal found 9/9£509
Thu 4/1212:10MFE - LHR
1 stop13h 20mUnited Airlines
Mon 22/1210:00LHR - MFE
1 stop19h 25mUnited Airlines
Deal found 9/9£514
Wed 3/1212:10MFE - LHR
2 stops16h 40mUnited Airlines
Mon 22/1210:00LHR - MFE
1 stop19h 25mUnited Airlines
Deal found 9/9£532
Mon 3/1114:49MFE - LHR
1 stop13h 11mBritish Airways
Tue 11/1108:20LHR - MFE
1 stop20h 59mBritish Airways
Deal found 11/9£535
Thu 4/1205:25MFE - LHR
2 stops19h 00mDelta
Mon 22/1215:50LHR - MFE
2 stops26h 04mDelta
Deal found 9/9£543
Wed 5/1117:14MFE - LHR
2 stops38h 36mDelta
Fri 14/1111:45LHR - MFE
2 stops58h 59mDelta
Deal found 11/9£552

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 September 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 3/11

19:22-07:30

1 stop30h 08m

London Heathrow

Tue 11/11

14:30-21:59

2 stops37h 29m

£464

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 5/11

07:00-07:30

1 stop18h 30m

London Heathrow

Fri 14/11

14:30-21:59

2 stops37h 29m

£464

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 30/11

07:00-07:30

1 stop18h 30m

London Heathrow

Mon 22/12

10:00-23:25

1 stop19h 25m

£504

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 3/12

07:00-07:30

1 stop18h 30m

London Heathrow

Mon 22/12

10:00-23:25

1 stop19h 25m

£504

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 3/12

05:25-09:00

2 stops21h 35m

London Heathrow

Mon 22/12

15:50-11:54

2 stops26h 04m

£506

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 2/12

05:25-07:50

2 stops20h 25m

London Heathrow

Mon 22/12

08:55-23:59

2 stops21h 04m

£506

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 1/12

05:25-07:50

2 stops20h 25m

London Heathrow

Mon 22/12

15:50-11:54

2 stops26h 04m

£506

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 2/12

05:00-07:30

1 stop20h 30m

London Heathrow

Mon 22/12

10:00-23:25

1 stop19h 25m

£509

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 4/12

12:10-07:30

1 stop13h 20m

London Heathrow

Mon 22/12

10:00-23:25

1 stop19h 25m

£514

Flights are sorted by cheapest return flights first.

Deals found on 11/9

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, January is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £112). Flying from McAllen to London Heathrow Airport in August is currently the most expensive (average of £164). 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 30h 08m. 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, January is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £112). Flying from McAllen to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Winchester
Chichester
Ipswich
Swindon
Dartford
Eastbourne

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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?

Millions of users choose and trust Cheapflights to book the best flight deals from McAllen to Heathrow 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 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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