What is the cheapest airline that flies from McAllen Miller Intl to London Heathrow?

United Airlines and Air Canada are the most popular carriers operating from McAllen Miller Intl to London Heathrow

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?

As of September 2026, there is 1 operator available to choose from 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.

$463 Cheap Flights from McAllen to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from McAllen to London

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:47 am - 6:50 amMFE McAllen Miller Intl-LHR London Heathrow

13h 03m1 stop Dallas/Fort Worth

7:05 pm - 8:52 amLHR London Heathrow-MFE McAllen Miller Intl

19h 47m2 stops Madrid Barajas Dallas/Fort Worth

$852British Airways

Mon, Nov 30 - Mon, Dec 7

2:10 pm - 9:15 amMFE McAllen Miller Intl-LHR London Heathrow

37h 05m2 stops Dallas/Fort Worth Madrid Barajas

1:25 pm - 8:57 amLHR London Heathrow-MFE McAllen Miller Intl

25h 32m2 stops Madrid Barajas Dallas/Fort Worth

$857Iberia

Mon, Dec 28 - Wed, Jan 13

11:47 am - 11:55 amMFE McAllen Miller Intl-LHR London Heathrow

18h 08m2 stops Dallas/Fort Worth Madrid Barajas

7:40 pm - 8:52 amLHR London Heathrow-MFE McAllen Miller Intl

19h 12m2 stops Madrid Barajas Dallas/Fort Worth

$876Iberia

Mon, Nov 30 - Mon, Dec 7

4:35 pm - 2:25 pmMFE McAllen Miller Intl-LHR London Heathrow

15h 50m1 stop Dallas/Fort Worth

11:30 am - 12:02 amLHR London Heathrow-MFE McAllen Miller Intl

18h 32m2 stops Madrid Barajas Dallas/Fort Worth

$885Iberia

Tue, Sep 29 - Thu, Oct 8

2:10 pm - 9:15 amMFE McAllen Miller Intl-LHR London Heathrow

37h 05m2 stops Dallas/Fort Worth Madrid Barajas

11:15 am - 8:19 pmLHR London Heathrow-MFE McAllen Miller Intl

15h 04m1 stop Dallas/Fort Worth

$890Iberia

Mon, Dec 28 - Wed, Jan 13

5:20 am - 6:30 amMFE McAllen Miller Intl-LHR London Heathrow

19h 10m2 stops Houston George Bush Intcntl Montreal Pierre Elliott Trudeau Intl

3:00 pm - 9:58 pmLHR London Heathrow-MFE McAllen Miller Intl

36h 58m2 stops Vancouver Intl Houston George Bush Intcntl

$896United Airlines

Tue, Sep 29 - Thu, Oct 8

7:00 am - 6:30 amMFE McAllen Miller Intl-LHR London Heathrow

17h 30m3 stops Houston George Bush Intcntl New York LaGuardia Montreal Pierre Elliott Trudeau Intl

3:00 pm - 9:58 pmLHR London Heathrow-MFE McAllen Miller Intl

36h 58m2 stops Vancouver Intl Houston George Bush Intcntl

$896United Airlines

Tue, Sep 29 - Thu, Oct 8

7:15 am - 11:20 amMFE McAllen Miller Intl-LHR London Heathrow

22h 05m2 stops Houston George Bush Intcntl Toronto Pearson Intl

3:00 pm - 4:13 pmLHR London Heathrow-MFE McAllen Miller Intl

31h 13m2 stops Toronto Pearson Intl Houston George Bush Intcntl

$897Air Canada

Tue, Dec 29 - Wed, Jan 13

7:15 am - 11:20 amMFE McAllen Miller Intl-LHR London Heathrow

22h 05m2 stops Houston George Bush Intcntl Toronto Pearson Intl

3:00 pm - 4:13 pmLHR London Heathrow-MFE McAllen Miller Intl

31h 13m2 stops Toronto Pearson Intl Houston George Bush Intcntl

$897Air Canada

Tue, Dec 29 - Thu, Jan 14

7:15 am - 11:20 amMFE McAllen Miller Intl-LHR London Heathrow

22h 05m2 stops Houston George Bush Intcntl Toronto Pearson Intl

3:00 pm - 4:13 pmLHR London Heathrow-MFE McAllen Miller Intl

31h 13m2 stops Toronto Pearson Intl Houston George Bush Intcntl

$897Air Canada

Tue, Dec 29 - Tue, Jan 12

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British Airways flights from McAllen to London Heathrow Airport

Our best British Airways deals on McAllen to London Heathrow Airport flight tickets

British Airways

Nov 30

MFE11:47 amMcAllen Miller Intl

13h 03m

1 stop

LHR6:50 amLondon Heathrow

Dec 7

LHR7:05 pmLondon Heathrow

19h 47m

2 stops

MFE8:52 amMcAllen Miller Intl

$852

British Airways

Sep 29

MFE4:35 pmMcAllen Miller Intl

15h 50m

1 stop

LHR2:25 pmLondon Heathrow

Oct 6

LHR8:55 amLondon Heathrow

14h 36m

1 stop

MFE5:31 pmMcAllen Miller Intl

$915

British Airways

Jan 10

MFE8:00 amMcAllen Miller Intl

24h 55m

2 stops

LHR2:55 pmLondon Heathrow

Jan 17

LHR6:10 pmLondon Heathrow

35h 23m

2 stops

MFE11:33 pmMcAllen Miller Intl

$935

Delta flights from McAllen to London Heathrow Airport

Our best Delta deals on McAllen to London Heathrow Airport flight tickets

Delta

Jan 10

MFE4:34 pmMcAllen Miller Intl

39h 16m

2 stops

LHR1:50 pmLondon Heathrow

Jan 17

LHR11:45 amLondon Heathrow

42h 14m

2 stops

MFE11:59 pmMcAllen Miller Intl

$948

Delta

Dec 14

MFE5:20 amMcAllen Miller Intl

21h 40m

2 stops

LHR9:00 amLondon Heathrow

Jan 10

LHR11:45 amLondon Heathrow

42h 14m

2 stops

MFE11:59 pmMcAllen Miller Intl

$988

Delta

Dec 14

MFE5:20 amMcAllen Miller Intl

21h 40m

2 stops

LHR9:00 amLondon Heathrow

Jan 7

LHR8:40 amLondon Heathrow

21h 19m

2 stops

MFE11:59 pmMcAllen Miller Intl

$996

momondo Fare Finder

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 round-trip

Quickest round-trip

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Mon 11/30

11:47 am-6:50 am

1 stop13h 03m

London Heathrow

Mon 12/7

7:05 pm-8:52 am

2 stops19h 47m

$852

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Mon 12/28

2:10 pm-9:15 am

2 stops37h 05m

London Heathrow

Wed 1/13

1:25 pm-8:57 am

2 stops25h 32m

$857

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Mon 11/30

11:47 am-11:55 am

2 stops18h 08m

London Heathrow

Mon 12/7

7:40 pm-8:52 am

2 stops19h 12m

$876

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 9/29

4:35 pm-2:25 pm

1 stop15h 50m

London Heathrow

Thu 10/8

11:30 am-12:02 am

2 stops18h 32m

$885

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Mon 12/28

2:10 pm-9:15 am

2 stops37h 05m

London Heathrow

Wed 1/13

11:15 am-8:19 pm

1 stop15h 04m

$890

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 9/29

5:20 am-6:30 am

2 stops19h 10m

London Heathrow

Thu 10/8

3:00 pm-9:58 pm

2 stops36h 58m

$896

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 9/29

7:00 am-6:30 am

3 stops17h 30m

London Heathrow

Thu 10/8

3:00 pm-9:58 pm

2 stops36h 58m

$896

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 12/29

7:15 am-11:20 am

2 stops22h 05m

London Heathrow

Wed 1/13

3:00 pm-4:13 pm

2 stops31h 13m

$897

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 12/29

7:15 am-11:20 am

2 stops22h 05m

London Heathrow

Thu 1/14

3:00 pm-4:13 pm

2 stops31h 13m

$897

McAllenLondon

MFE McAllen Miller Intl - LHR London Heathrow

MFELHR

McAllen Miller Intl

Tue 12/29

7:15 am-11:20 am

2 stops22h 05m

London Heathrow

Tue 1/12

3:00 pm-4:13 pm

2 stops31h 13m

$897

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

The month of December is, on average, the cheapest month to fly to London Heathrow Airport from McAllen, with most prices found around $0. If you’re not able to fly to London Heathrow Airport in December, then June is your next best option. Flight prices from McAllen to London Heathrow Airport during June average around $0.

Can stopping save me money on McAllen to London Heathrow Airport flights?

You could potentially save up to 14% on your flight if you consider stops on a McAllen to London Heathrow Airport flight.

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

Best Price Found	$463
Fastest flight time	11h 37m
Direct flights	None

The best one-way flight to London Heathrow Airport from McAllen in the past 72 hours is $463. The best round-trip flight deal from McAllen to London Heathrow Airport found on momondo in the last 72 hours is $852.

The fastest flight from McAllen to London Heathrow Airport takes 11h 37m

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

Frequently asked questions about flying from McAllen to London Heathrow Airport

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 37m 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?
As of September 2026, there is 1 operator available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from McAllen to London Heathrow Airport is United Airlines, representing 100% of all bookings.

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
United Airlines	PriceFrom $698	Free Cancellation	Rating 7.4 10,158 reviews		Search United Airlines flights

Hounslow

Gatwick

Milton Keynes

Stratford-upon-Avon

Hayes

Wembley

Luton

Croydon

Dover

Richmond

Stansted

Kingston upon Thames

Harrow

Cobham

Watford

Slough

Eastbourne

Worthing

Hook

Uxbridge

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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.

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Flights to London Gatwick Airportfrom $401

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Cheap flights from McAllen to London from $463

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from McAllen to London departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from McAllen to London Heathrow Airport

Our best British Airways deals on McAllen to London Heathrow Airport flight tickets

Delta flights from McAllen to London Heathrow Airport

Our best Delta deals on McAllen to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from McAllen to London Heathrow Airport that are best for you.

See travel insights to London from

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

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

Can stopping save me money on McAllen to London Heathrow Airport flights?

What is the cheapest airline that flies from McAllen Miller Intl to London Heathrow?

When to book flights from McAllen to London Heathrow Airport

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near London?

Why use momondo?

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.

Get notified when prices go down

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Find better results for your trip to London

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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