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Cheap flights from McAllen to London 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 — LON
26 Aug — 2 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from McAllen to London

Enter your travel dates to find the best prices.

Cheapest flights from McAllen to London
Explore the most affordable flight options available from McAllen to London. 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
Mon 24/812:37
MFE
-
LCY
2 stops22h 43m
KLM
Thu 3/908:25
LCY
-
MFE
2 stops21h 34m
KLM
Deal found 22/7£716
Thu 24/918:12
MFE
-
LGW
2 stops19h 48m
Iberia
Mon 28/920:40
LGW
-
MFE
2 stops55h 04m
Iberia
Deal found 26/7£719
Mon 7/912:37
MFE
-
LCY
2 stops22h 03m
KLM
Mon 14/909:20
LCY
-
MFE
2 stops20h 35m
KLM
Deal found 23/7£749
Mon 14/912:39
MFE
-
LCY
2 stops22h 41m
KLM
Sun 20/917:50
LCY
-
MFE
2 stops36h 05m
KLM
Deal found 25/7£752
Sat 15/818:03
MFE
-
LGW
2 stops43h 57m
British Airways
Fri 28/811:30
LGW
-
MFE
2 stops27h 18m
British Airways
Deal found 25/7£802
Wed 9/917:47
MFE
-
LGW
2 stops20h 13m
Iberia
Wed 16/920:40
LGW
-
MFE
2 stops33h 19m
Iberia
Deal found 24/7£828
Thu 8/1012:15
MFE
-
LCY
2 stops23h 40m
Lufthansa
Tue 13/1018:30
LCY
-
MFE
2 stops33h 28m
Lufthansa
Deal found 26/7£851

Find flight deals from McAllen to London

Discover tips and strategies to find the most affordable flight options for your journey from McAllen (MFE) to London (LON). 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

June

Cheapest in

January

Average price

£850
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. 24% potential increase in price (£174 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£37 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 London 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 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

McAllenLondon

MFE - LCY

MFELCY

McAllen Miller Intl

Mon 24/8

12:37-17:20

2 stops22h 43m

London City

Thu 3/9

08:25-23:59

2 stops21h 34m

£716

McAllenLondon

MFE - LGW

MFELGW

McAllen Miller Intl

Thu 24/9

18:12-20:00

2 stops19h 48m

London Gatwick

Mon 28/9

20:40-21:44

2 stops55h 04m

£719
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

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 25 resultsSorted by cheapest first
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Best time to book a flight from McAllen to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, August is the cheapest month in which you can book a flight from McAllen to London (average of £511). Flying from McAllen to London in October is currently the most expensive (average of £1,304). 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.

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

Airfare is above average for this route at the moment.
McAllen to London flights typically cost between £486 and £511 in October.
The cheapest return price found within the last 5 days was £664 on Iberia (7 Oct–16 Oct).

Related info for your journey

Find useful and relevant information for your journey from McAllen to London. 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?

    McAllen Miller Intl (MFE), located 2.0 mi from the city center, is the airport you fly out of when you book flights from McAllen to London. 0 airlines have flights from Miller Intl to London on a regular basis. Booking flights from McAllen Miller Intl to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

  • How long is the flight from McAllen to London?

    Airlines like Delta, United Airlines, and KLM fly from McAllen to London in about 16h 55m. The time it takes to get you to your destination can typically vary by up to 22h 21m. The distance between McAllen and London is about 5135 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from McAllen to London?

    When deciding which route to take from McAllen to London consider McAllen Miller Intl - London Heathrow, McAllen Miller Intl - London City or McAllen Miller Intl - London Gatwick as they are the most popular.

  • Can I find deals for flights from McAllen to London that include hotel bookings?

    Yes. In addition to deals on McAllen to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from McAllen to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from McAllen to London.

  • Can I find deals for business class flights from McAllen to London?

    Yes. Cheapflights offers flight deals from McAllen to London 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?

    Currently, August is the cheapest month in which you can book a flight from McAllen to London (average of £511). Flying from McAllen to London in October is currently the most expensive (average of £1,304). 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

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