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Cheap flights from McAllen to London Heathrow Airport from £413

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
5 May — 12 May1
1 adult

Cheap flight deals from McAllen to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from McAllen (MFE) to Heathrow (LHR). 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 30 April 2025.

Round-trip from

£751

One-way from

£413

Popular in

December

Cheapest in

August

Average price

£649
United Airlines
  • United Airlines
  • 16/5-3/6
  • 3 total stops
  • 62h 33m total
  • McAllen to London
Search Deals
Iberia
  • Iberia
  • 4/5
  • 1 total stop
  • 18h 10m total
  • McAllen to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from McAllen to Heathrow

Cheapest flights from McAllen to Heathrow
Explore the most affordable flight options available from McAllen to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Sat 15/1118:19MFE - LHR
1 stop30h 01mIberia
Thu 27/1110:15LHR - MFE
1 stop16h 10mIberia
Deal found 29/4£562
Sat 15/1119:27MFE - LHR
1 stop32h 48mUnited Airlines
Thu 27/1111:10LHR - MFE
2 stops34h 50mUnited Airlines
Deal found 29/4£579
Sat 15/1107:15MFE - LHR
3 stops17h 55mMultiple Airlines
Thu 27/1115:00LHR - MFE
2 stops32h 45mMultiple Airlines
Deal found 29/4£612
Sat 8/1105:15MFE - LHR
2 stops19h 55mAir Canada
Sat 15/1111:10LHR - MFE
2 stops29h 45mAir Canada
Deal found 29/4£650
Fri 13/620:06MFE - LHR
1 stop12h 19mAmerican Airlines
Fri 20/616:25LHR - MFE
1 stop13h 56mAmerican Airlines
Deal found 29/4£868
Fri 13/620:06MFE - LHR
1 stop12h 19mBritish Airways
Fri 20/606:15LHR - MFE
2 stops19h 05mBritish Airways
Deal found 29/4£871
Fri 19/1217:30MFE - LHR
2 stops36h 35mDelta
Sat 27/1206:30LHR - MFE
2 stops23h 36mDelta
Deal found 29/4£1,103

Cheapflights Fare Finder

Customise your flight search to find flights from McAllen to Heathrow 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 30 April 2025.
Use the filters below to find and compare flights from McAllen to London Heathrow Airport that are best for you.

Fly from

McAllen

Fly to

Heathrow

Route

Depart

Return

Price

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 16/5

17:18-07:40

1 stop32h 22m

London Heathrow

Tue 3/6

15:50-16:01

2 stops30h 11m

£751

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 22/7

12:40-06:25

1 stop11h 45m

London Heathrow

Wed 6/8

10:30-22:14

1 stop17h 44m

£758

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 22/7

05:15-06:35

2 stops19h 20m

London Heathrow

Wed 6/8

08:30-13:29

2 stops34h 59m

£763

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/6

20:06-14:25

1 stop12h 19m

London Heathrow

Fri 20/6

16:25-00:21

1 stop13h 56m

£868

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/6

20:06-14:25

1 stop12h 19m

London Heathrow

Fri 20/6

06:15-19:20

2 stops19h 05m

£871

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Fri 13/6

19:25-06:30

2 stops29h 05m

London Heathrow

Fri 20/6

14:10-16:01

3 stops31h 51m

£1,418

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 4/5

10:40-10:50

1 stop18h 10m

£413

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 4/5

05:00-06:30

2 stops19h 30m

£416

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 4/5

07:00-10:40

3 stops21h 40m

£434

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 4/5

10:20-09:50

3 stops41h 30m

£2,113

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 11 results
1
2

Best time to book a flight from McAllen to Heathrow

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

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

Currently, January is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £112). Flying from McAllen to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 30 April 2025.
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,696 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,245 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
2,700 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.7
Okay
7,046 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

    McAllen Miller Intl (MFE) is the airport you will fly out of if you book a flight from McAllen to London Heathrow. You should not have trouble finding flights to London Heathrow from Miller Intl; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the McAllen airport to London Heathrow. It is only a 2.0 mi journey to Miller Intl (MFE) from McAllen’s city center.

  • What are the cheapest airlines flying from McAllen to London Heathrow Airport round-trip?

    According to our current data, United Airlines (£751), Iberia (£758), and Air Canada (£763) offers the cheapest pricing from McAllen to London Heathrow Airport.

  • What are the cheapest airlines to fly from McAllen to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as £413 on Iberia. Other airlines that offer cheap prices include Air Canada from £416 and United Airlines from £434 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from McAllen to Heathrow 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 Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of £112). Flying from McAllen to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near McAllen?

Book flights to McAllen if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Northampton
Ilford
Hayes
Southend-on-Sea
Crawley
Wembley
Ipswich
Maidstone
Winchester
Swindon
Folkestone
Dartford

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See prices for flight routes from nearby airports that may be better suited for you.
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