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Cheap flights from McAllen to London Heathrow Airport from £244

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
12 Jul — 19 Jul1
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 June 2026.

Fri 25/907:00
MFE
-
LHR
2 stops21h 00m
United Airlines
Sun 27/907:30
LHR
-
MFE
2 stops20h 28m
United Airlines
Deal found 10/6£641
Wed 23/913:51
MFE
-
LHR
1 stop13h 14m
Iberia
Wed 7/1011:30
LHR
-
MFE
2 stops18h 46m
Iberia
Deal found 8/6£643
Tue 3/1107:05
MFE
-
LHR
1 stop17h 45m
Iberia
Tue 17/1106:00
LHR
-
MFE
2 stops21h 24m
Iberia
Deal found 7/6£652
Wed 21/1009:40
MFE
-
LHR
1 stop19h 55m
United Airlines
Fri 6/1107:30
LHR
-
MFE
2 stops20h 32m
United Airlines
Deal found 10/6£659
Mon 14/917:25
MFE
-
LHR
1 stop12h 10m
United Airlines
Tue 22/910:00
LHR
-
MFE
1 stop13h 44m
United Airlines
Deal found 8/6£661
Wed 16/916:35
MFE
-
LHR
1 stop15h 50m
British Airways
Wed 30/911:30
LHR
-
MFE
2 stops27h 14m
British Airways
Deal found 10/6£663
Tue 3/1111:55
MFE
-
LHR
2 stops16h 30m
United Airlines
Tue 17/1109:30
LHR
-
MFE
2 stops18h 32m
United Airlines
Deal found 7/6£664
Wed 21/1016:19
MFE
-
LHR
1 stop12h 36m
Multiple Airlines
Fri 6/1115:00
LHR
-
MFE
1 stop24h 03m
Multiple Airlines
Deal found 10/6£666
Wed 23/909:21
MFE
-
LHR
1 stop19h 34m
Multiple Airlines
Wed 7/1012:55
LHR
-
MFE
1 stop17h 21m
Multiple Airlines
Deal found 11/6£667
Mon 14/912:39
MFE
-
LHR
2 stops18h 26m
KLM
Tue 22/917:45
LHR
-
MFE
2 stops60h 10m
KLM
Deal found 11/6£667

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 June 2026.

Round-trip from

£641

One-way from

£244

Popular in

March

Cheapest in

September

Average price

£1,112
United Airlines
  • United Airlines
  • 25/9-27/9
  • 4 total stops
  • 41h 28m total
  • McAllen to London
Search Deals
British Airways
  • British Airways
  • 9/11
  • 1 total stop
  • 16h 32m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£108 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£47 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 12 June 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

Wed 21/10

09:40-11:35

1 stop19h 55m

London Heathrow

Fri 6/11

07:30-22:02

2 stops20h 32m

£659

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 12/9

17:25-07:45

1 stop32h 20m

London Heathrow

Tue 22/9

10:00-17:44

1 stop13h 44m

£661

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 3/11

11:55-10:25

2 stops16h 30m

London Heathrow

Tue 17/11

09:30-22:02

2 stops18h 32m

£664

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 21/10

16:19-10:55

1 stop12h 36m

London Heathrow

Fri 6/11

15:00-09:03

1 stop24h 03m

£666

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 14/9

16:35-10:55

1 stop12h 20m

London Heathrow

Tue 22/9

12:55-08:44

1 stop25h 49m

£667

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 23/9

07:00-05:55

2 stops16h 55m

London Heathrow

Wed 7/10

09:30-21:58

2 stops18h 28m

£667

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 14/9

17:25-11:35

1 stop12h 10m

London Heathrow

Tue 22/9

07:45-21:59

2 stops20h 14m

£667

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

16:35-14:25

1 stop15h 50m

London Heathrow

Wed 30/9

08:55-19:22

1 stop16h 27m

£673
Fastest return journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

07:00-05:55

2 stops16h 55m

London Heathrow

Wed 30/9

13:40-21:58

1 stop14h 18m

£676
Cheapest one-way
Fastest single journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

13:51-09:05

1 stop13h 14m

£244

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 14 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?

    United Airlines can get you from McAllen to London Heathrow Airport in just under 19h 55m. 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Eastbourne
Watford
Swindon
Ipswich
Poole
Guildford
Romford

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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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