HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$516+ Cheap flights from McAllen (MFE) to Heathrow (LHR)

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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
MFE — LHR
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from McAllen to Heathrow with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$682
(Cheapflightsfares)

One-way from

$516
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$657
Provider with most accurate pricing for McAllen Miller Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for McAllen Miller Intl-London Heathrow flights.
Search Deals
From McAllen Miller Intl to London Heathrow
Search Deals
One-way flight from McAllen Miller Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 March 26, 2025.

This Iberia deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/156:21 pmMFE - LHR
1 stop14h 04mIberia
Thu 8/214:25 pmLHR - MFE
1 stop13h 33mIberia
Deal found 3/24$669
This Cheapflightsfares deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:00 amMFE - LHR
2 stops21h 00mAir Canada
Tue 5/209:30 amLHR - MFE
2 stops19h 59mAir Canada
Deal found 3/24$682
This oojo deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:58 pmMFE - LHR
1 stop12h 47mBritish Airways
Tue 4/297:50 amLHR - MFE
2 stops18h 53mBritish Airways
Deal found 3/24$685
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/239:50 amMFE - LHR
1 stop15h 50mUnited Airlines
Wed 4/303:50 pmLHR - MFE
2 stops37h 39mUnited Airlines
Deal found 3/24$691
This American Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/98:09 pmMFE - LHR
1 stop12h 16mAmerican Airlines
Fri 10/173:10 pmLHR - MFE
1 stop14h 56mAmerican Airlines
Deal found 3/24$755
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/105:30 amMFE - LHR
2 stops26h 20mDelta
Mon 4/218:40 amLHR - MFE
2 stops21h 17mDelta
Deal found 3/25$831
This Expedia deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/102:10 pmMFE - LHR
1 stop11h 30mLufthansa
Tue 4/227:25 amLHR - MFE
2 stops19h 57mLufthansa
Deal found 3/25$925
This Mytrip deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/239:12 pmMFE - LHR
3 stops30h 48mMultiple Airlines
Wed 4/302:05 pmLHR - MFE
2 stops26h 57mMultiple Airlines
Deal found 3/24$976

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated March 26, 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

Wed 5/7

7:00 am-10:00 am

2 stops21h 00m

London Heathrow

Tue 5/20

9:30 am-11:29 pm

2 stops19h 59m

$682

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Tue 4/22

5:58 pm-12:45 pm

1 stop12h 47m

London Heathrow

Tue 4/29

7:50 am-8:43 pm

2 stops18h 53m

$685

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 5/7

6:04 pm-2:25 pm

1 stop14h 21m

London Heathrow

Tue 5/20

8:20 am-7:31 pm

1 stop17h 11m

$687

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 4/23

9:50 am-7:40 am

1 stop15h 50m

London Heathrow

Wed 4/30

3:50 pm-11:29 pm

2 stops37h 39m

$691

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 4/10

5:58 pm-12:45 pm

1 stop12h 47m

London Heathrow

Mon 4/21

4:25 pm-12:18 am

1 stop13h 53m

$756

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 4/10

5:30 am-1:50 pm

2 stops26h 20m

London Heathrow

Mon 4/21

8:40 am-11:57 pm

2 stops21h 17m

$831

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 4/10

2:10 pm-7:40 am

1 stop11h 30m

London Heathrow

Tue 4/22

7:25 am-9:22 pm

2 stops19h 57m

$925

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Wed 4/23

9:12 pm-10:00 am

3 stops30h 48m

London Heathrow

Wed 4/30

2:05 pm-11:02 am

2 stops26h 57m

$976

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Thu 6/12

10:07 pm-12:05 pm

3 stops55h 58m

$516

McAllenLondon

MFE - LHR

MFELHR

McAllen Miller Intl

Sun 3/30

5:00 am-6:30 am

2 stops19h 30m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 13 results
1
2

Compare providers for flights from McAllen to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from McAllen to Heathrow in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on McAllen-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on McAllen-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from McAllen-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on McAllen-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for McAllen-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of $661). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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.

What is the cheapest time of day to fly from MFE to LHR?

Find hourly flight availability from McAllen to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

When flying from McAllen to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 25% versus a flight in the evening.

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 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 March 26, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and American Airlines from McAllen to London to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
8,960 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
2,646 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    Most people fly from McAllen Miller Intl (MFE) if they book a flight from McAllen to London Heathrow. On average, Miller Intl has 0 outbound flights to London Heathrow per day from 3 airlines. McAllen Miller Intl is conveniently located just 2.0 mi from McAllen’s city center.

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

    Currently priced at $682, Air Canada will fly you from McAllen to London Heathrow Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Iberia - these airlines can fly you to your destination from $685 and $687, respectively. Air Canada is currently priced 27% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from McAllen to London Heathrow Airport are Air Canada ($571), American Airlines ($576), and United Airlines ($684).

  • 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 vacation 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, November is the cheapest month in which you can book a flight from McAllen to London Heathrow Airport (average of $661). Flying from McAllen to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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

Traveling to a place near McAllen?

Book flights to McAllen if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Luton
Wembley
Harrow
Horley
Canterbury
Gatwick
Dover
Orpington
Watford
Milton Keynes
Northampton
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for McAllen to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Heathrow flights
Hobby to Heathrow flights
Austin to Heathrow flights
George Bush Intcntl to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Love Field to Heathrow flights
Hobby to Gatwick flights
Hobby to London City flights
Dallas/Fort Worth to London City flights
George Bush Intcntl to Gatwick flights
Austin to Gatwick flights
George Bush Intcntl to London City flights
Austin to London City flights
Dallas/Fort Worth to Stansted flights
San Antonio to Heathrow flights
Love Field to Gatwick flights
San Antonio to Gatwick flights
San Antonio to London City flights
Austin to Stansted flights
Lubbock to Heathrow flights
El Paso to Heathrow flights
Dallas/Fort Worth to Luton flights
El Paso to London City flights
San Antonio to Stansted flights
McAllen to London City flights
George Bush Intcntl to Luton flights
McAllen to Gatwick flights
Abilene to Heathrow flights
Corpus Christi to Heathrow flights
El Paso to Gatwick flights
Midland to Heathrow flights
Killeen to Heathrow flights
Harlingen to Heathrow flights
Love Field to London City flights
Lubbock to Gatwick flights
Brownsville to Heathrow flights
College Station to Heathrow flights
Midland to Gatwick flights
Hobby to Southend flights
Killeen to Gatwick flights
Killeen to London City flights

Top 3 airlines flying from McAllen to Heathrow

Discover the top 3 airlines that operate flights from McAllen to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$661Average$997FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$742Average$1,145FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$751Average$1,081FlexibilityNo cancel feeOn-time70%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.