Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from McAllen to London from $523

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from McAllen to London departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from McAllen to London

Cheap round-trip flights

Delta Logo
5:25 am - 7:50 amMFE-LHR
20h 25m2 stops
Delta Logo
8:55 am - 11:56 pmLHR-MFE
21h 01m2 stops
$523Delta
Find Deal
Mon, Dec 1 - Wed, Dec 17
Delta Logo
5:25 am - 9:00 amMFE-LHR
21h 35m2 stops
Delta Logo
3:50 pm - 12:03 pmLHR-MFE
26h 13m2 stops
$573Delta
Find Deal
Thu, Dec 4 - Tue, Dec 16
KLM Logo
12:31 pm - 1:10 pmMFE-LHR
18h 39m2 stops
KLM Logo
8:55 am - 11:59 pmLHR-MFE
20h 04m2 stops
$586KLM
Find Deal
Thu, Oct 23 - Thu, Oct 30
Delta Logo
5:25 am - 9:00 amMFE-LHR
21h 35m2 stops
Delta Logo
10:45 am - 11:56 pmLHR-MFE
19h 11m2 stops
$633Delta
Find Deal
Mon, Dec 1 - Thu, Dec 18
Logo
2:05 pm - 7:40 amMFE-LHR
11h 35m1 stop
Logo
7:40 am - 9:59 pmLHR-MFE
19h 19m2 stops
$675
Find Deal
Thu, Oct 23 - Thu, Oct 30
United Airlines Logo
7:00 am - 10:15 amMFE-LHR
21h 15m1 stop
United Airlines Logo
10:00 am - 11:25 pmLHR-MFE
19h 25m1 stop
$676United Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 18
United Airlines Logo
7:00 am - 6:40 amMFE-LHR
17h 40m2 stops
United Airlines Logo
10:00 am - 11:25 pmLHR-MFE
19h 25m1 stop
$681United Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 18
British Airways Logo
11:53 am - 6:50 amMFE-LHR
12h 57m1 stop
British Airways Logo
4:30 pm - 11:59 pmLHR-MFE
13h 29m1 stop
$834British Airways
Find Deal
Thu, Dec 4 - Fri, Dec 19
British Airways Logo
11:12 am - 11:40 amMFE-LHR
18h 28m1 stop
British Airways Logo
10:15 am - 6:35 pmLHR-MFE
14h 20m1 stop
$849British Airways
Find Deal
Tue, Dec 2 - Fri, Dec 19
Logo
7:00 am - 6:40 amMFE-LHR
17h 40m2 stops
Logo
1:00 pm - 1:30 pmLHR-MFE
30h 30m2 stops
$1,084
Find Deal
Sun, Dec 14 - Wed, Dec 31

Lufthansa flights from McAllen to London Heathrow Airport

Our best Lufthansa deals on McAllen to London Heathrow Airport flight tickets
Lufthansa
Nov 14
MFE4:37 pmMcAllen Miller Intl
11h 38m
1 stop
LHR10:15 amLondon Heathrow
Nov 19
LHR10:00 amLondon Heathrow
14h 07m
1 stop
MFE6:07 pmMcAllen Miller Intl
$898
Find similar
Lufthansa
Nov 14
MFE4:37 pmMcAllen Miller Intl
11h 38m
1 stop
LHR10:15 amLondon Heathrow
Nov 19
LHR10:25 amLondon Heathrow
17h 34m
2 stops
MFE9:59 pmMcAllen Miller Intl
$902
Find similar
Lufthansa
Nov 14
MFE2:06 pmMcAllen Miller Intl
15h 09m
2 stops
LHR11:15 amLondon Heathrow
Nov 19
LHR10:25 amLondon Heathrow
17h 34m
2 stops
MFE9:59 pmMcAllen Miller Intl
$1,581
Find similar

United Airlines flights from McAllen to London Heathrow Airport

Our best United Airlines deals on McAllen to London Heathrow Airport flight tickets
United Airlines
Dec 3
MFE7:00 amMcAllen Miller Intl
21h 15m
1 stop
LHR10:15 amLondon Heathrow
Dec 18
LHR10:00 amLondon Heathrow
19h 25m
1 stop
MFE11:25 pmMcAllen Miller Intl
$676
Find similar
United Airlines
Dec 3
MFE7:00 amMcAllen Miller Intl
17h 40m
2 stops
LHR6:40 amLondon Heathrow
Dec 18
LHR10:00 amLondon Heathrow
19h 25m
1 stop
MFE11:25 pmMcAllen Miller Intl
$681
Find similar
United Airlines
Dec 2
MFE5:00 amMcAllen Miller Intl
20h 30m
1 stop
LHR7:30 amLondon Heathrow
Dec 22
LHR10:00 amLondon Heathrow
19h 25m
1 stop
MFE11:25 pmMcAllen Miller Intl
$689
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from McAllen to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated September 11, 2025.
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

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 12/1

5:25 am-7:50 am

2 stops20h 25m

London Heathrow

Wed 12/17

8:55 am-11:56 pm

2 stops21h 01m

$523

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 12/4

5:25 am-9:00 am

2 stops21h 35m

London Heathrow

Tue 12/16

3:50 pm-12:03 pm

2 stops26h 13m

$573

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 10/23

12:31 pm-1:10 pm

2 stops18h 39m

London Heathrow

Thu 10/30

8:55 am-11:59 pm

2 stops20h 04m

$586

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Mon 12/1

5:25 am-9:00 am

2 stops21h 35m

London Heathrow

Thu 12/18

10:45 am-11:56 pm

2 stops19h 11m

$633

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 10/23

2:05 pm-7:40 am

1 stop11h 35m

London Heathrow

Thu 10/30

7:40 am-9:59 pm

2 stops19h 19m

$675

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 12/3

7:00 am-10:15 am

1 stop21h 15m

London Heathrow

Thu 12/18

10:00 am-11:25 pm

1 stop19h 25m

$676

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 12/3

7:00 am-6:40 am

2 stops17h 40m

London Heathrow

Thu 12/18

10:00 am-11:25 pm

1 stop19h 25m

$681

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 12/4

11:53 am-6:50 am

1 stop12h 57m

London Heathrow

Fri 12/19

4:30 pm-11:59 pm

1 stop13h 29m

$834

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 12/2

11:12 am-11:40 am

1 stop18h 28m

London Heathrow

Fri 12/19

10:15 am-6:35 pm

1 stop14h 20m

$849

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 12/14

7:00 am-6:40 am

2 stops17h 40m

London Heathrow

Wed 12/31

1:00 pm-1:30 pm

2 stops30h 30m

$1,084

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to London from

How to get the cheapest flight ticket from McAllen to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

The month of August is, on average, the cheapest month to fly to London Heathrow Airport from McAllen, with most prices found around $653. If you’re not able to fly to London Heathrow Airport in August, then September is your next best option. Flight prices from McAllen to London Heathrow Airport during September average around $700.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $756. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,290.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from McAllen to London Heathrow Airport in the afternoon for as low as $940. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $1,239.

When to book flights from McAllen to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from McAllen to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap McAllen to London Heathrow Airport (MFE to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from McAllen to London Heathrow Airport

Direct flights

None
There are no direct flights from McAllen to London Heathrow Airport. There are no popular flight routes from McAllen to London Heathrow Airport.
Search flight deals

  • How far is McAllen Miller Intl to London Heathrow by plane?

    A flight from McAllen Miller Intl to London Heathrow will travel around 5133.2 mi. 11h 24m is a normal flight duration for this route.

  • When did momondo last update prices for flights from McAllen Miller Intl Airport to London Heathrow Airport?

    Prices for flights from McAllen Miller Intl Airport to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from McAllen Miller Intl Airport to London Heathrow Airport?

  • How old do you have to be to fly from McAllen Miller Intl Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from McAllen Miller Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from McAllen to London Heathrow Airport?

Best airlines flying from McAllen to London Heathrow Airport

Compare and see reviews for airlines that fly from McAllen to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $680Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom $682Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $880Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Salisbury
Brentwood
Ilford
Folkestone
Colchester
Swindon
Stratford-upon-Avon
Watford

Why use momondo?

Why should I use momondo to find a flight deal from McAllen to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from McAllen to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from McAllen to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from McAllen which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from McAllen to London?

momondo helps you find the best flight between McAllen and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from McAllen to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from McAllen are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 10/11
Sat 10/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Gatwick Airportfrom $322
Flights to London City Airportfrom $452
Flights to London Stansted Airportfrom $397
Flights to London Luton Airportfrom $390
Flights to Glasgow Intl Airportfrom $389
Flights to Belfast Intl Airportfrom $486
Flights to London Southend Airportfrom $462
Flights to Belfast City Airportfrom $521