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Cheap flights from McAllen to London Heathrow Airport from £399

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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
26 Feb — 5 Mar1
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 27 January 2026.

Tue 18/809:33
MFE
-
LHR
1 stop22h 52m
British Airways
Mon 7/918:10
LHR
-
MFE
2 stops34h 29m
British Airways
Deal found 26/1£471
Sat 2/518:59
MFE
-
LHR
1 stop30h 41m
United Airlines
Thu 14/507:25
LHR
-
MFE
2 stops18h 29m
United Airlines
Deal found 26/1£472
Sat 12/920:12
MFE
-
LHR
1 stop30h 53m
British Airways
Mon 21/918:10
LHR
-
MFE
2 stops29h 52m
British Airways
Deal found 25/1£475
Wed 6/507:00
MFE
-
LHR
2 stops17h 30m
United Airlines
Fri 15/507:25
LHR
-
MFE
2 stops20h 23m
United Airlines
Deal found 26/1£475
Tue 5/505:15
MFE
-
LHR
2 stops19h 40m
United Airlines
Wed 13/507:25
LHR
-
MFE
2 stops20h 23m
United Airlines
Deal found 26/1£476
Sat 12/920:12
MFE
-
LHR
1 stop32h 43m
British Airways
Tue 22/906:10
LHR
-
MFE
2 stops17h 52m
British Airways
Deal found 26/1£480
Tue 5/505:15
MFE
-
LHR
1 stop24h 20m
United Airlines
Tue 12/509:30
LHR
-
MFE
2 stops19h 29m
United Airlines
Deal found 26/1£480
Thu 26/205:13
MFE
-
LHR
1 stop23h 02m
United Airlines
Mon 2/312:05
LHR
-
MFE
1 stop35h 58m
United Airlines
Deal found 25/1£482
Sun 3/507:00
MFE
-
LHR
1 stop18h 40m
United Airlines
Thu 14/513:40
LHR
-
MFE
1 stop15h 19m
United Airlines
Deal found 26/1£489

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 27 January 2026.

Round-trip from

£472

One-way from

£399

Popular in

March

Cheapest in

September

Average price

£589
United Airlines
  • United Airlines
  • 2/5-14/5
  • 3 total stops
  • 49h 10m total
  • McAllen to London
Search Deals
British Airways
  • British Airways
  • 21/5
  • 1 total stop
  • 32h 52m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£39 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 27 January 2026.
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 6/5

07:00-11:35

1 stop22h 35m

London Heathrow

Wed 13/5

06:55-19:54

2 stops18h 59m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 2/5

18:59-07:40

1 stop30h 41m

London Heathrow

Thu 14/5

07:25-19:54

2 stops18h 29m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 5/5

07:00-07:40

1 stop18h 40m

London Heathrow

Fri 15/5

06:55-21:48

2 stops20h 53m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 5/5

07:00-11:35

1 stop22h 35m

London Heathrow

Thu 14/5

07:25-19:54

2 stops18h 29m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 6/5

12:10-07:40

1 stop13h 30m

London Heathrow

Thu 14/5

06:55-21:48

2 stops20h 53m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 3/5

07:00-07:40

1 stop18h 40m

London Heathrow

Thu 14/5

07:25-19:54

2 stops18h 29m

£472

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 5/5

05:15-06:55

2 stops19h 40m

London Heathrow

Wed 13/5

07:25-21:48

2 stops20h 23m

£476

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 5/5

05:15-11:35

1 stop24h 20m

London Heathrow

Tue 12/5

09:30-22:59

2 stops19h 29m

£480

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 26/2

05:13-10:15

1 stop23h 02m

London Heathrow

Mon 2/3

10:00-21:42

1 stop17h 42m

£482

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 21/5

20:03-10:55

1 stop32h 52m

£399

Flights are sorted by cheapest return flights first.

Deals found on 24/1

Showing 1-10 of 14 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.

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 22h 35m. 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.

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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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See prices for flight routes from nearby airports that may be better suited for you.
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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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