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Cheap flights from McAllen to London Heathrow Airport from £347

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
26 Aug — 2 Sep1
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 July 2026.

Wed 7/1014:07
MFE
-
LHR
1 stop18h 18m
Iberia
Fri 16/1007:50
LHR
-
MFE
2 stops22h 18m
Iberia
Deal found 23/7£664
Wed 23/911:21
MFE
-
LHR
1 stop17h 34m
Multiple Airlines
Wed 7/1012:55
LHR
-
MFE
1 stop14h 51m
Multiple Airlines
Deal found 24/7£677
Wed 7/1012:15
MFE
-
LHR
1 stop13h 30m
United Airlines
Fri 16/1013:40
LHR
-
MFE
1 stop14h 18m
United Airlines
Deal found 23/7£686
Mon 24/812:37
MFE
-
LHR
2 stops18h 38m
KLM
Thu 3/908:40
LHR
-
MFE
2 stops21h 19m
KLM
Deal found 22/7£695
Wed 9/914:08
MFE
-
LHR
1 stop15h 27m
United Airlines
Wed 16/906:55
LHR
-
MFE
2 stops21h 04m
United Airlines
Deal found 24/7£699

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 July 2026.

Round-trip from

£664

One-way from

£347

Popular in

March

Cheapest in

November

Average price

£709
Iberia
  • Iberia
  • 7/10-16/10
  • 3 total stops
  • 40h 36m total
  • McAllen to London
Search Deals
United Airlines
  • United Airlines
  • 16/9
  • 1 total stop
  • 22h 35m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£48 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 July 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 July 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 23/9

11:21-10:55

1 stop17h 34m

London Heathrow

Wed 7/10

12:55-21:46

1 stop14h 51m

£681

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 24/8

12:37-13:15

2 stops18h 38m

London Heathrow

Thu 3/9

08:40-23:59

2 stops21h 19m

£695

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 10/1

16:34-13:50

2 stops39h 16m

London Heathrow

Sun 17/1

11:45-23:59

2 stops42h 14m

£709

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

07:00-05:55

2 stops16h 55m

London Heathrow

Wed 30/9

07:30-21:58

2 stops20h 28m

£710

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 12/9

17:25-06:55

2 stops31h 30m

London Heathrow

Tue 22/9

08:00-21:59

2 stops19h 59m

£712

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 14/9

07:00-05:55

2 stops16h 55m

London Heathrow

Tue 22/9

07:45-17:44

2 stops15h 59m

£712
Fastest return journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 10/1

15:26-12:00

1 stop14h 34m

London Heathrow

Sun 17/1

08:20-17:04

1 stop14h 44m

£721

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 7/9

07:00-11:35

1 stop22h 35m

London Heathrow

Mon 14/9

15:30-21:59

2 stops36h 29m

£722

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 8/10

07:00-10:00

2 stops21h 00m

London Heathrow

Tue 13/10

09:30-21:58

2 stops18h 28m

£734
Cheapest one-way
Fastest single journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

07:00-07:15

2 stops18h 15m

£347

Flights are sorted by cheapest return flights first.

Deals found on 26/7

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.

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?

    KLM, Delta, and United Airlines can get you from McAllen to London Heathrow Airport in just under 16h 55m. Your travel time can differ by up to 22h 21m. 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
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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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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