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Cheap flights from McAllen to London Heathrow Airport from £245

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
25 May — 1 Jun1
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 25 April 2026.

Wed 23/911:04
MFE
-
LHR
1 stop16h 01m
Iberia
Wed 7/1011:30
LHR
-
MFE
2 stops18h 46m
Iberia
Deal found 24/4£642
Wed 16/907:00
MFE
-
LHR
1 stop18h 45m
United Airlines
Wed 30/912:05
LHR
-
MFE
2 stops29h 11m
United Airlines
Deal found 25/4£657
Sat 12/917:15
MFE
-
LHR
1 stop32h 30m
United Airlines
Tue 22/910:25
LHR
-
MFE
2 stops17h 32m
United Airlines
Deal found 21/4£659
Wed 23/914:05
MFE
-
LHR
1 stop15h 30m
United Airlines
Wed 7/1010:00
LHR
-
MFE
1 stop15h 22m
United Airlines
Deal found 22/4£662
Wed 16/905:00
MFE
-
LHR
2 stops19h 35m
Air Canada
Wed 30/917:40
LHR
-
MFE
2 stops34h 18m
Air Canada
Deal found 25/4£664
Wed 16/920:01
MFE
-
LHR
1 stop12h 24m
British Airways
Wed 30/908:55
LHR
-
MFE
1 stop18h 52m
British Airways
Deal found 21/4£665
Fri 16/1013:51
MFE
-
LHR
1 stop16h 59m
Iberia
Tue 20/1011:30
LHR
-
MFE
2 stops18h 46m
Iberia
Deal found 22/4£681
Thu 15/1012:00
MFE
-
LHR
1 stop17h 35m
United Airlines
Wed 21/1006:55
LHR
-
MFE
2 stops21h 03m
United Airlines
Deal found 22/4£685
Fri 16/1007:00
MFE
-
LHR
2 stops17h 30m
United Airlines
Tue 20/1007:25
LHR
-
MFE
2 stops20h 33m
United Airlines
Deal found 22/4£688

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 25 April 2026.

Round-trip from

£642

One-way from

£245

Popular in

March

Cheapest in

September

Average price

£531
Iberia
  • Iberia
  • 23/9-7/10
  • 3 total stops
  • 34h 47m total
  • McAllen to London
Search Deals
British Airways
  • British Airways
  • 16/9
  • 1 total stop
  • 12h 24m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£117 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 April 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 25 April 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 16/9

12:07-11:35

1 stop17h 28m

London Heathrow

Wed 30/9

08:30-11:16

2 stops32h 46m

£658
Fastest return journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 14/9

05:00-07:45

1 stop20h 45m

London Heathrow

Tue 22/9

10:00-17:54

1 stop13h 54m

£659

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sat 12/9

17:15-07:45

1 stop32h 30m

London Heathrow

Tue 22/9

10:00-17:54

1 stop13h 54m

£659
Cheapest one-way

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

11:04-09:05

1 stop16h 01m

£245

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

05:00-06:55

2 stops19h 55m

£246

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 16/9

07:00-06:30

3 stops17h 30m

£255

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 15/7

09:23-09:00

1 stop17h 37m

£482

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 20/5

05:25-08:05

2 stops20h 40m

£483
Fastest single journey

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 15/7

09:43-06:55

2 stops15h 12m

£483

Flights are sorted by cheapest return flights first.

Deals found on 24/4

Sorted by cheapest first

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?

    Iberia, United Airlines, and British Airways can get you from McAllen to London Heathrow Airport in just under 15h 30m. Your travel time can differ by up to 31m. 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
Hounslow
Northampton
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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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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