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Cheap flights from Mcallen to London Heathrow

Compare Mcallen to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Mcallen to London Heathrow

Looking for a cheap last-minute deal or the best round-trip flight from Mcallen Airport to London Heathrow Airport? If you want to travel next month, round-trip fares start from $977. Find the lowest prices on one-way and round-trip tickets right here.
London.$868 per passenger.Departing Tue, Oct 13, returning Tue, Oct 20.Round-trip flight with United.Outbound indirect flight with United, departing from Mcallen on Tue, Oct 13, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Tue, Oct 20, arriving in Mcallen.Price includes taxes and charges.From $868, select.
London.$882 per passenger.Departing Wed, Mar 17, returning Fri, Apr 9.Round-trip flight with United.Outbound indirect flight with United, departing from Mcallen on Wed, Mar 17, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Fri, Apr 9, arriving in Mcallen.Price includes taxes and charges.From $882, select.
London.$889 per passenger.Departing Tue, Nov 24, returning Thu, Dec 3.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Mcallen on Tue, Nov 24, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Thu, Dec 3, arriving in Mcallen.Price includes taxes and charges.From $889, select.
London.$901 per passenger.Departing Tue, Nov 24, returning Thu, Nov 26.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Mcallen on Tue, Nov 24, arriving in London Heathrow.Inbound indirect flight with British Airways, departing from London Heathrow on Thu, Nov 26, arriving in Mcallen.Price includes taxes and charges.From $901, select.
London.$901 per passenger.Departing Tue, Dec 1, returning Fri, Dec 4.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Mcallen on Tue, Dec 1, arriving in London Heathrow.Inbound indirect flight with British Airways, departing from London Heathrow on Fri, Dec 4, arriving in Mcallen.Price includes taxes and charges.From $901, select.
London.$910 per passenger.Departing Wed, Feb 10, returning Fri, Feb 19.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Mcallen on Wed, Feb 10, arriving in London Heathrow.Inbound indirect flight with British Airways, departing from London Heathrow on Fri, Feb 19, arriving in Mcallen.Price includes taxes and charges.From $910, select.
London.$919 per passenger.Departing Sat, Apr 17, returning Thu, Apr 22.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Mcallen on Sat, Apr 17, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Thu, Apr 22, arriving in Mcallen.Price includes taxes and charges.From $919, select.
London.$932 per passenger.Departing Fri, Sep 25, returning Wed, Oct 14.Round-trip flight with United.Outbound indirect flight with United, departing from Mcallen on Fri, Sep 25, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Wed, Oct 14, arriving in Mcallen.Price includes taxes and charges.From $932, select.
London.$946 per passenger.Departing Wed, Jan 6, returning Thu, Jan 14.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Mcallen on Wed, Jan 6, arriving in London Heathrow.Inbound indirect flight with Delta, departing from London Heathrow on Thu, Jan 14, arriving in Mcallen.Price includes taxes and charges.From $946, select.
London.$966 per passenger.Departing Fri, Sep 25, returning Tue, Sep 29.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Mcallen on Fri, Sep 25, arriving in London Heathrow.Inbound indirect flight with British Airways, departing from London Heathrow on Tue, Sep 29, arriving in Mcallen.Price includes taxes and charges.From $966, select.
London.$977 per passenger.Departing Sat, Aug 15, returning Fri, Aug 28.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Mcallen on Sat, Aug 15, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Fri, Aug 28, arriving in Mcallen.Price includes taxes and charges.From $977, select.
London.$984 per passenger.Departing Thu, Aug 27, returning Thu, Sep 3.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Mcallen on Thu, Aug 27, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Thu, Sep 3, arriving in Mcallen.Price includes taxes and charges.From $984, select.
London.$996 per passenger.Departing Thu, Oct 29, returning Sun, Nov 1.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Mcallen on Thu, Oct 29, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Sun, Nov 1, arriving in Mcallen.Price includes taxes and charges.From $996, select.
London.$1,226 per passenger.Departing Sat, Dec 26, returning Wed, Jan 6.Round-trip flight with United.Outbound indirect flight with United, departing from Mcallen on Sat, Dec 26, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Wed, Jan 6, arriving in Mcallen.Price includes taxes and charges.From $1,226, select.
London.$1,256 per passenger.Departing Sat, Mar 13, returning Sat, Mar 20.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Mcallen on Sat, Mar 13, arriving in London Heathrow.Inbound indirect flight with British Airways, departing from London Heathrow on Sat, Mar 20, arriving in Mcallen.Price includes taxes and charges.From $1,256, select.
London.$1,380 per passenger.Departing Tue, Jul 28, returning Sat, Aug 8.Round-trip flight with United.Outbound indirect flight with United, departing from Mcallen on Tue, Jul 28, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Sat, Aug 8, arriving in Mcallen.Price includes taxes and charges.From $1,380, select.

Find the cheapest month to fly from Mcallen to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Mcallen to London Heathrow flights are currently cheapest in October.
Jul
Find prices
Aug
from $977
Sep
from $966
Oct
from $868
Nov
from $901
Dec
from $901
Jan
from $946
Feb
from $910
Mar
from $1,256
Apr
from $919
May
from $1,550
Jun
from $3,069

Mcallen to London Heathrow: Alternative routes

Compare routes from Mcallen to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

London City

12km from central London
Closest
from $965
Search flights

London Heathrow

23km from central London
from $868
Search flights

London Gatwick

40km from central London
Cheapest
from $789
Search flights

London Luton

45km from central London
from $1,049
Search flights

London Stansted

49km from central London
from $1,068
Search flights

London Southend

57km from central London
Search flights

Mcallen to London: Flight information

The things to know before you go.
Cheapest flight found$868
Cheapest month to flyOctober

Finding cheap flights from Mcallen to London Heathrow: Frequently asked questions

The best price we found for a round-trip flight from Mcallen to London Heathrow is $868. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Mcallen to London Heathrow. But we found flights with one or more stops from $868.
There are no flights flying from Mcallen to London Heathrow, as of July 2026.
The cheapest month to fly from Mcallen to London Heathrow is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Mcallen Airport to London Heathrow Airport on Tuesday, October 13, 2026.
No airlines currently offer direct flights between Mcallen Airport and London Heathrow Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to London Heathrow.

Flying from Mcallen Airport (MFE) to London Heathrow Airport (LHR): what you need to know

  • London's timezone is UTC+0, making London six hours ahead of Mcallen.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your MFE to LHR flight.

  • During popular months such as July, it's best to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of international flights when you travel during a high season in general.

  • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Mcallen Airport to London Heathrow Airport, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to visit the city of your choice. Popular stopovers between MFE and LHR include:

    • Dallas Fort Worth International Airport

    • Houston George Bush Intercntl. Airport

    • Austin-Bergstrom Airport

How to find the cheapest flights from Mcallen Airport (MFE) to London Heathrow Airport (LHR)

  • $329 is currently the best price for a one-way Mcallen Airport to London Heathrow Airport flight. A return flight starts from $868. These fares can change depending on availability.

  • Don't wait until the last minute. You're more likely to get cheap tickets from MFE to LHR if you book early. Airlines often offer some great early bird discounts.

  • Getting cheap flights from Mcallen Airport to London Heathrow Airport is easy if you can be flexible with your travel dates. Use the 'Whole month' tool to see the lowest prices across every month and snap up a great deal.

  • Spend less time searching for cheap flights from MFE to LHR by creating a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.

  • Choose your preferred arrival and departure times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Mcallen Airport to London Heathrow Airport.

Handy information about Mcallen Airport (MFE)

  • You'll find MFE at 2500 S Bicentenial Blvd.

  • Mcallen Airport maintains a strong on-time performance, reducing the likelihood of delays. Departures from MFE touch down on schedule 82% of the time.

  • Mcallen Airport is around 8 kilometers from central Mcallen. If you're catching a cab, ride-sharing or driving from the center, it'll take 10 minutes or so to arrive, depending on the traffic.

  • The journey when using public transport will take about 25 minutes.

  • Get your travels off to a stress-free start by staying near MFE. Whether you're boarding an early flight from Mcallen Airport to London Heathrow Airport or just don't want to be rushed, these stays are the answer:

Arriving at London Heathrow Airport (LHR)

When to fly to London Heathrow Airport (LHR)

  • July is the busiest month for flights from Mcallen Airport to London Heathrow Airport. To escape the crowds, travel to London in March.

  • Book your flight from Mcallen Airport to London Heathrow Airport for July if you want to visit London during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).

  • If you want cooler conditions, search for a cheap ticket from MFE to LHR in January. Average temperatures are between 0ºC (32ºF) and 9ºC (48ºF) then.

Explore more of the United Kingdom

  • London is easy to fall in love with, but there are so many other parts of the United Kingdom just waiting to be explored. About 257 kilometers north-west of London, a visit to Manchester will keep you busy. Start with attractions like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.

  • Birmingham is another favorite destination in the United Kingdom and is around 161 kilometers north-west of London. No journey is complete without visiting Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

Plan the rest of your trip from Mcallen to London

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.