MFE - LHR

$399 Find Cheap Flights from McAllen to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from McAllen to London departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from McAllen to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from McAllen to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from McAllen to London (MFE-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from McAllen to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from McAllen to London

Fri, Jan 16 - Thu, Jan 22
United Airlines Logo
9:30 am - 7:30 amMFE-LHR
16h 00m1 stop
United Airlines Logo
2:30 pm - 9:57 pmLHR-MFE
37h 27m2 stops
$659United Airlines
Find Deal
Sun, Dec 7 - Fri, Dec 19
British Airways Logo
11:53 am - 8:35 amMFE-LHR
14h 42m1 stop
British Airways Logo
8:20 am - 10:59 pmLHR-MFE
20h 39m1 stop
$664British Airways
Find Deal
Fri, Jan 16 - Thu, Jan 22
United Airlines Logo
12:05 pm - 10:50 amMFE-LHR
16h 45m2 stops
United Airlines Logo
8:30 am - 9:57 pmLHR-MFE
19h 27m2 stops
$668United Airlines
Find Deal
Sat, Dec 6 - Fri, Dec 19
British Airways Logo
5:09 pm - 6:50 amMFE-LHR
31h 41m1 stop
British Airways Logo
8:20 am - 10:59 pmLHR-MFE
20h 39m1 stop
$677British Airways
Find Deal
Fri, Jan 16 - Thu, Jan 22
British Airways Logo
5:56 pm - 11:40 amMFE-LHR
11h 44m1 stop
British Airways Logo
8:20 am - 6:17 pmLHR-MFE
15h 57m1 stop
$682British Airways
Find Deal
Fri, Nov 14 - Sat, Nov 22
United Airlines Logo
12:15 pm - 11:05 amMFE-LHR
16h 50m2 stops
United Airlines Logo
10:00 am - 9:59 pmLHR-MFE
17h 59m1 stop
$740United Airlines
Find Deal
Fri, Nov 14 - Sat, Nov 22
Air Canada Logo
7:00 am - 6:30 amMFE-LHR
41h 30m2 stops
Air Canada Logo
1:00 pm - 8:54 amLHR-MFE
25h 54m2 stops
$753Air Canada
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Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
7:15 am - 7:30 amMFE-LHR
19h 15m1 stop
United Airlines Logo
2:05 pm - 9:07 amLHR-MFE
25h 02m2 stops
$806United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Delta Logo
5:25 am - 6:20 amMFE-LHR
19h 55m2 stops
Delta Logo
1:05 pm - 12:07 amLHR-MFE
17h 02m2 stops
$951Delta
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Fri, Mar 27 - Tue, Mar 31
Air Canada Logo
7:15 am - 6:30 amMFE-LHR
18h 15m2 stops
Air Canada Logo
8:30 am - 9:30 pmLHR-MFE
19h 00m2 stops
$1,044Air Canada
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $659 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 32% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$659
Overall average: $743
United Airlines
Fri 1/16Thu 1/22
MFE - LHR • 1 stop
Cheapest one-way
$399
United Airlines
Mon 2/2
MFE - LHR • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Booking Insights

KAYAK's insights & trends for McAllen to London flights

Get data-powered insights and trends into flights from McAllen to London to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from McAllen to London Heathrow Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from McAllen to London Heathrow Airport departing in January.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from McAllen to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from McAllen to London Heathrow Airport is August, where tickets cost $653 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $1,576 and $1,354 respectively.

Good to know

Low seasonJanuary
Cheapest flight$399
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from McAllen to London

When to book flights from McAllen to London

Are your dates flexible? Find out the best times to travel from McAllen to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking McAllen to London flights

  • What is the cheapest flight from McAllen to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from McAllen to London Heathrow Airport was $399 for a one-way ticket and $659 for a round-trip.

  • Do I need a passport to fly between McAllen and London?

    Yes, you'll most likely have to show a valid passport before boarding the plane in McAllen and on arrival in London.

  • Which airports will I be using when flying from McAllen to London?

    McAllen airport is called McAllen Miller Intl and the only airport in London is London Heathrow.

  • Which aircraft models fly most regularly from McAllen to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from McAllen to London?

    Star Alliance, and oneworld are the airline alliances operating flights between McAllen and London, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from McAllen to London, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from McAllen to London are United Airlines and American Airlines. With an average price for the route of $1,070 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,286 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from McAllen to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from McAllen to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from McAllen to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from McAllen is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from McAllen to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to McAllen with another airline. Booking your flights between McAllen and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from McAllen to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from McAllen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from McAllen to London

 
See real verified KAYAK customer reviews for airlines flying from McAllen to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from McAllen to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8998 reviews
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

4.0 OkayNicole, Oct 2025IAH - MCI
Read more United Airlines reviews

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

A little bit more leg room in premium economy. I am 6’4”.

Overall it was good. I missed my connection but I was put on another flight.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Everything you need to know for your flight from McAllen to London

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