$487 Find Cheap Flights from McAllen to the United Kingdom

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 the United Kingdom departing on 4/19. 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

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Cheap Flights from McAllen to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London2 stops$793
Birmingham
Birmingham2 stops$1,045
London
London2 stops$793
Birmingham
Birmingham2 stops$1,045

Book Cheap McAllen to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from McAllen to the United Kingdom 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 the United Kingdom

Mon, Sep 14 - Wed, Sep 23
KLM Logo
12:48 pm - 5:20 pm
MFE
-
LCY
22h 32m
2 stops
KLM Logo
8:15 pm - 11:59 pm
LCY
-
MFE
33h 44m
2 stops
$793KLM
Wed, Apr 29 - Wed, May 6
Iberia Logo
1:10 pm - 7:55 am
MFE
-
LHR
12h 45m
1 stop
Iberia Logo
11:30 am - 11:59 pm
LHR
-
MFE
18h 29m
2 stops
$827Iberia
Mon, Apr 13 - Mon, Apr 20
Iberia Logo
1:10 pm - 8:05 am
MFE
-
LHR
12h 55m
1 stop
Iberia Logo
7:25 pm - 8:28 pm
LHR
-
MFE
31h 03m
2 stops
$840Iberia
Wed, Apr 29 - Wed, May 6
United Airlines Logo
7:00 am - 6:30 am
MFE
-
LHR
17h 30m
2 stops
United Airlines Logo
7:30 am - 9:48 pm
LHR
-
MFE
20h 18m
2 stops
$846United Airlines
Wed, Apr 29 - Wed, May 6
British Airways Logo
6:00 pm - 12:10 pm
MFE
-
LHR
12h 10m
1 stop
British Airways Logo
12:55 pm - 10:40 pm
LHR
-
MFE
15h 45m
1 stop
$856British Airways
Mon, Apr 27 - Mon, May 4
United Airlines Logo
7:00 am - 7:45 am
MFE
-
LHR
18h 45m
1 stop
United Airlines Logo
3:30 pm - 10:59 pm
LHR
-
MFE
37h 29m
2 stops
$864United Airlines
Mon, Apr 13 - Mon, Apr 20
British Airways Logo
3:45 pm - 12:10 pm
MFE
-
LHR
14h 25m
1 stop
British Airways Logo
4:25 pm - 11:59 pm
LHR
-
MFE
13h 34m
1 stop
$906British Airways
Thu, Apr 30 - Thu, May 7
Air Canada Logo
6:59 pm - 6:30 am
MFE
-
LHR
29h 31m
2 stops
Air Canada Logo
8:30 am - 9:48 pm
LHR
-
MFE
19h 18m
2 stops
$913Air Canada
Sun, Sep 13 - Wed, Sep 23
American Airlines Logo
12:05 pm - 10:40 am
MFE
-
LGW
16h 35m
2 stops
American Airlines Logo
10:45 am - 10:17 pm
LGW
-
MFE
17h 32m
2 stops
$948American Airlines
Sat, Sep 12 - Wed, Sep 23
American Airlines Logo
12:05 pm - 10:40 am
MFE
-
LGW
16h 35m
2 stops
American Airlines Logo
10:45 am - 12:17 am
LGW
-
MFE
19h 32m
2 stops
$997American Airlines
Booking Insights

KAYAK's insights & trends for McAllen to the United Kingdom flights

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

What is the cheapest month to fly from McAllen to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from McAllen to the United Kingdom, 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 the United Kingdom is January, when tickets cost $607 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,355 and $1,130 respectively.

Good to know

Low seasonSeptember
Cheapest flight$487
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from McAllen to London Heathrow Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from McAllen to the United Kingdom?

    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 the United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from McAllen to the United Kingdom 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 the United Kingdom?

    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 from McAllen to the United Kingdom with an airline and back with another airline.

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

    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 from McAllen to the United Kingdom 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 the United Kingdom

 
Need help choosing which airline to fly with from McAllen to the United Kingdom? 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 9435 reviews
6.6Food
8.1Crew
7.3Comfort
7.1Entertainment
7.7Boarding
Airline reviews

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

2.0 MediocreAnonymous, Feb 2026
IAH - GUA
Read more United Airlines reviews

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Delayed, toilets did not flush, pilot parked to far away from Gate

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Check in was rough because the check in crew did not know how to manage my international visa documents. Required a long process and 4 people to finally be able to proceed to security. They told us incorrect information several times before acknowledging we did indeed have everything we needed from the start.

Poor communication ahead of time about flight delays and old planes/other equipment.

Mechanical issue delayed us 2hrs and then once we landed sat on tarmac for 30mins because someone left a vehicle in front of the gaye

The crew was excellent and overall the flight was good. No complaints.

Like all of the flights I took to get down to Dallas. They were delayed

Forced to check bags. Crew uninterested in collecting trash. Unclean seats.

Flight pulled out on time but sat on runway for 30 mins. It was extremely cold in the aircraft despite wearing a winter coat. Surprisingly they had a vegetarian meal but could have some better snack choices for a 8 hour flight.

We had a male flight attendant who was super attentive and wonderful! Very professional. I have both gluten and dairy intolerance, and was only able to get a gluten free part, and not the dairy free part of the meal. Easy to order ahead of time and I appreciate being able to do that.

It was a train wreck but on an airplane. First off, flight was delayed then we board only to hear two announcements, First weather delays in Orlando and second backup battery warning on emergency lights. After sitting on the plane for almost 2 hours they have us deplane due to the maintenance issue. We were told they were getting another plane. In the mean time, I notice another American- Orlando flight and ask the gate agent if I can switch. He says he cant help me and I'd have to walk to A13 from A37. Really!? I get down there and get a seat only to get an announcement my original flight was RE-boarding. The Then inflight there's no communication and I notice on flightaware were circling over the Gulf of America. I call the flight attendant and of course she has no clue and apparently 5m later the pilot finally tells us about another delay. Why does American always have these service and delay issues? They are my LAST choice in flights now!

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Everything you need to know for your flight from McAllen to the United Kingdom

Information on your arrival and departure airports