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Cheap flights from McAllen to London Heathrow Airport from £393

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 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 28 October 2025.

Wed 10/1207:00MFE - LHR
1 stop21h 15mUnited Airlines
Wed 17/1210:00LHR - MFE
1 stop15h 56mUnited Airlines
Deal found 27/10£487
Wed 10/1209:37MFE - LHR
1 stop18h 23mBritish Airways
Wed 17/1216:30LHR - MFE
1 stop22h 27mBritish Airways
Deal found 26/10£508
Fri 31/1012:15MFE - LHR
1 stop17h 00mUnited Airlines
Sun 2/1114:30LHR - MFE
2 stops37h 29mUnited Airlines
Deal found 27/10£545
Wed 10/1219:25MFE - LHR
2 stops29h 45mAir Canada
Wed 17/1211:10LHR - MFE
2 stops27h 49mAir Canada
Deal found 27/10£756
Fri 31/1007:00MFE - LHR
2 stops17h 55mMultiple Airlines
Sun 2/1111:10LHR - MFE
2 stops27h 44mMultiple Airlines
Deal found 27/10£804
Sun 14/1214:10MFE - LHR
1 stop11h 20mUnited Airlines
Fri 2/111:10LHR - MFE
2 stops27h 49mUnited Airlines
Deal found 26/10£979
Sat 27/1207:00MFE - LHR
2 stops46h 20mAir Canada
Wed 31/1213:25LHR - MFE
2 stops32h 35mAir Canada
Deal found 27/10£992
Sat 27/1207:00MFE - LHR
2 stops46h 20mMultiple Airlines
Wed 31/1210:00LHR - MFE
1 stop19h 25mMultiple Airlines
Deal found 27/10£1,016

Cheap 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 28 October 2025.

Round-trip from

£487

One-way from

£393

Popular in

June

Cheapest in

August

Average price

£787
United Airlines
  • United Airlines
  • 10/12-17/12
  • 2 total stops
  • 37h 11m total
  • McAllen to London
Search Deals
United Airlines
  • United Airlines
  • 13/3
  • 2 total stops
  • 22h 35m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£156 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 28 October 2025.
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 10/12

07:00-08:25

2 stops19h 25m

London Heathrow

Wed 17/12

10:00-19:56

1 stop15h 56m

£491

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 10/3

09:55-06:50

1 stop15h 55m

London Heathrow

Tue 17/3

15:00-00:02

1 stop14h 02m

£560

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 27/3

07:15-07:30

1 stop19h 15m

London Heathrow

Tue 31/3

14:05-09:07

2 stops25h 02m

£605

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 27/3

05:25-06:20

2 stops19h 55m

London Heathrow

Tue 31/3

13:50-00:07

2 stops16h 17m

£713

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/3

07:15-10:50

2 stops22h 35m

£393

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/3

07:15-06:30

2 stops42h 15m

£416

Flights are sorted by cheapest return flights first.

Deals found on 26/10

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

What is the cheapest month to book a flight from McAllen to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £463). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of £1,070). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 and British Airways can get you from McAllen to London Heathrow Airport in just under 15h 55m. Your travel time can differ by up to 3h 30m. 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.

  • What is the cheapest month to book a flight from McAllen to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £463). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of £1,070). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

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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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