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Cheap flights from McAllen to London Heathrow Airport from £235

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
12 Apr — 19 Apr1
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 13 March 2026.

Mon 9/1116:59
MFE
-
LHR
1 stop13h 16m
British Airways
Fri 13/1107:30
LHR
-
MFE
2 stops19h 54m
British Airways
Deal found 9/3£554
Mon 9/1109:40
MFE
-
LHR
1 stop18h 35m
United Airlines
Fri 13/1110:00
LHR
-
MFE
1 stop15h 15m
United Airlines
Deal found 8/3£561
Tue 18/815:23
MFE
-
LHR
1 stop11h 37m
British Airways
Mon 7/920:00
LHR
-
MFE
2 stops32h 39m
British Airways
Deal found 9/3£562
Tue 18/818:00
MFE
-
LHR
1 stop14h 25m
Multiple Airlines
Mon 7/920:00
LHR
-
MFE
2 stops29h 32m
Multiple Airlines
Deal found 8/3£566
Mon 14/912:48
MFE
-
LHR
2 stops18h 27m
KLM
Wed 23/920:55
LHR
-
MFE
2 stops33h 04m
KLM
Deal found 13/3£568
Mon 9/1107:15
MFE
-
LHR
2 stops17h 15m
Air Canada
Fri 13/1113:25
LHR
-
MFE
2 stops25h 42m
Air Canada
Deal found 8/3£570
Sun 8/1111:56
MFE
-
LHR
1 stop16h 04m
Iberia
Sun 15/1107:30
LHR
-
MFE
2 stops19h 54m
Iberia
Deal found 9/3£574
Mon 14/920:12
MFE
-
LHR
1 stop12h 13m
British Airways
Tue 22/916:35
LHR
-
MFE
2 stops47h 16m
British Airways
Deal found 13/3£576
Tue 15/909:38
MFE
-
LHR
1 stop16h 02m
United Airlines
Tue 22/906:55
LHR
-
MFE
2 stops21h 02m
United Airlines
Deal found 13/3£578

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 13 March 2026.

Round-trip from

£562

One-way from

£235

Popular in

March

Cheapest in

September

Average price

£1,352
British Airways
  • British Airways
  • 18/8-7/9
  • 3 total stops
  • 44h 16m total
  • McAllen to London
Search Deals
British Airways
  • British Airways
  • 15/7
  • 1 total stop
  • 18h 18m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£116 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 13 March 2026.
Use the filters below to find and compare flights from McAllen to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 18/8

14:05-10:40

2 stops14h 35m

London Heathrow

Mon 7/9

17:40-17:54

2 stops30h 14m

£591

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 18/8

09:33-10:55

1 stop19h 22m

London Heathrow

Mon 7/9

12:55-00:15

1 stop17h 20m

£621

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 27/4

07:00-07:45

1 stop18h 45m

London Heathrow

Mon 4/5

15:30-22:59

2 stops37h 29m

£646

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 23/4

13:03-10:20

2 stops15h 17m

London Heathrow

Thu 30/4

08:40-23:59

2 stops21h 19m

£663
Fastest return journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 24/3

17:15-10:15

1 stop12h 00m

London Heathrow

Tue 31/3

09:30-22:59

2 stops19h 29m

£705

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 21/5

07:00-09:35

2 stops20h 35m

London Heathrow

Fri 29/5

07:30-22:56

2 stops21h 26m

£769
Cheapest one-way

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 15/7

07:00-08:30

3 stops19h 30m

£254

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 19/4

13:10-12:10

1 stop17h 00m

£367
Fastest single journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 19/4

10:32-07:50

2 stops15h 18m

£367

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 18/4

17:15-07:45

1 stop32h 30m

£378

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 11 resultsSorted by cheapest first
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

How much does it cost for a return flight from McAllen to London Heathrow Airport?

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?

    British Airways and United Airlines can get you from McAllen to London Heathrow Airport in just under 11h 37m. Your travel time can differ by up to 2h 58m. The distance between McAllen and London Heathrow Airport is about 5135 mi. This flight may include one or multiple stops.

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

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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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