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Cheap flights from London Heathrow Airport to McAllen from $649

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to McAllen departing on 10/20. 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
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to McAllen

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:10 am - 7:20 pm
LHR
-
MFE
16h 10m
2 stops
United Airlines Logo
9:40 am - 6:40 am
MFE
-
LHR
15h 00m
2 stops
$1,199United Airlines
Thu, Nov 12 - Mon, Nov 16
British Airways Logo
8:55 am - 5:25 pm
LHR
-
MFE
14h 30m
1 stop
British Airways Logo
8:01 pm - 2:25 pm
MFE
-
LHR
12h 24m
1 stop
$4,593British Airways
Sun, Aug 9 - Sun, Aug 9
British Airways Logo
8:55 am - 5:25 pm
LHR
-
MFE
14h 30m
1 stop
British Airways Logo
8:01 pm - 12:00 pm
MFE
-
LHR
33h 59m
2 stops
$4,710British Airways
Sun, Aug 9 - Sun, Aug 9
United Airlines Logo
1:40 pm - 8:56 am
LHR
-
MFE
25h 16m
1 stop
United Airlines Logo
4:35 pm - 7:45 am
MFE
-
LHR
33h 10m
1 stop
$10,555United Airlines
Mon, Jun 22 - Sun, Jul 12
United Airlines Logo
6:55 am - 9:51 pm
LHR
-
MFE
20h 56m
2 stops
United Airlines Logo
7:00 am - 9:00 am
MFE
-
LHR
20h 00m
2 stops
$10,810United Airlines
Mon, Jun 22 - Sun, Jul 12

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United Airlines flights from London Heathrow Airport to McAllen

Our best United Airlines deals on London Heathrow Airport to McAllen flight tickets
United Airlines
Nov 12
LHR10:00 amLondon Heathrow
15h 20m
1 stop
MFE7:20 pmMcAllen Miller Intl
Nov 16
MFE11:55 amMcAllen Miller Intl
16h 20m
1 stop
LHR10:15 amLondon Heathrow
$1,199
United Airlines
Jun 22
LHR1:40 pmLondon Heathrow
25h 16m
1 stop
MFE8:56 amMcAllen Miller Intl
Jul 12
MFE4:35 pmMcAllen Miller Intl
33h 10m
1 stop
LHR7:45 amLondon Heathrow
$10,555
United Airlines
Jun 22
LHR6:55 amLondon Heathrow
20h 56m
2 stops
MFE9:51 pmMcAllen Miller Intl
Jul 12
MFE7:00 amMcAllen Miller Intl
20h 00m
2 stops
LHR9:00 amLondon Heathrow
$10,810

British Airways flights from London Heathrow Airport to McAllen

Our best British Airways deals on London Heathrow Airport to McAllen flight tickets
British Airways
Aug 9
LHR8:55 amLondon Heathrow
14h 30m
1 stop
MFE5:25 pmMcAllen Miller Intl
Aug 9
MFE8:01 pmMcAllen Miller Intl
12h 24m
1 stop
LHR2:25 pmLondon Heathrow
$4,593
British Airways
Aug 9
LHR8:55 amLondon Heathrow
14h 30m
1 stop
MFE5:25 pmMcAllen Miller Intl
Aug 9
MFE8:01 pmMcAllen Miller Intl
33h 59m
2 stops
LHR12:00 pmLondon Heathrow
$4,710

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to McAllen 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 June 12, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to McAllen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Thu 11/12

9:10 am-7:20 pm

2 stops16h 10m

McAllen Miller Intl

Mon 11/16

9:40 am-6:40 am

2 stops15h 00m

$1,199
Quickest round-trip

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Sun 8/9

8:55 am-5:25 pm

1 stop14h 30m

McAllen Miller Intl

Sun 8/9

8:01 pm-2:25 pm

1 stop12h 24m

$4,593

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Sun 8/9

8:55 am-5:25 pm

1 stop14h 30m

McAllen Miller Intl

Sun 8/9

8:01 pm-12:00 pm

2 stops33h 59m

$4,710

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Mon 6/22

1:40 pm-8:56 am

1 stop25h 16m

McAllen Miller Intl

Sun 7/12

4:35 pm-7:45 am

1 stop33h 10m

$10,555

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Mon 6/22

6:55 am-9:51 pm

2 stops20h 56m

McAllen Miller Intl

Sun 7/12

7:00 am-9:00 am

2 stops20h 00m

$10,810
Cheapest one-way

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Tue 10/20

12:00 pm-3:58 pm

3 stops33h 58m

$649

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Tue 10/20

5:00 pm-11:23 am

2 stops48h 23m

$796

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Sun 11/15

9:30 am-9:07 am

2 stops29h 37m

$874

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Sun 11/15

12:05 pm-10:55 am

1 stop28h 50m

$905

LondonMcAllen

LHR - MFE

LHRMFE

London Heathrow

Tue 10/20

8:55 am-12:16 am

1 stop21h 21m

$943

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to McAllen from

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

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 airline that flies from London Heathrow to McAllen Miller Intl?

United Airlines, British Airways, and Lufthansa are the most popular carriers operating from London Heathrow to McAllen Miller Intl

When to book flights from London Heathrow Airport to McAllen

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

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

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

Fastest flight time

13h 20m

Direct flights

None
The fastest flight from London Heathrow Airport to McAllen takes 13h 20m
There are no direct flights from London Heathrow Airport to McAllen. There are no popular flight routes from London Heathrow Airport to McAllen.
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Frequently asked questions about flying from London Heathrow Airport to McAllen

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

    A flight from London Heathrow to McAllen Miller Intl will travel around 5133.2 mi. By plane, this route typically takes 13h 20m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to McAllen Miller Intl Airport.

  • What documentation or ID do you need to fly to McAllen Miller Intl Airport?

    The travel and health documents required for your trip to McAllen Miller Intl 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 McAllen Miller Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near McAllen?

Book flights to McAllen if you plan to visit one of these locations
Weslaco
Pharr
Edinburg
Mission

Why use momondo?

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

Finding the right flight to McAllen from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to McAllen quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to McAllen from London with this policy.

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

momondo provides multiple filters to help you find the best flight to McAllen from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to McAllen from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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