$636 Find Cheap Flights from McAllen to the United Kingdom

This is the cheapest round-trip 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 8/16. 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

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Best United Kingdom Flight Deals from McAllen

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$636
London
London1 stop$636

Cheap Flights from McAllen to the United Kingdom

 
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

Sat, Aug 16 - Thu, Sep 4
United Airlines Logo
7:15 pm - 7:40 amMFE-LHR
30h 25m1 stop
United Airlines Logo
12:05 pm - 1:30 pmLHR-MFE
31h 25m2 stops
$636United Airlines
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Wed, Sep 3 - Thu, Sep 11
United Airlines Logo
7:00 am - 6:30 amMFE-LHR
17h 30m3 stops
United Airlines Logo
8:30 am - 8:55 amLHR-MFE
30h 25m2 stops
$640United Airlines
Find Deal
Sat, Aug 16 - Thu, Sep 4
Air Canada Logo
7:00 am - 11:50 amMFE-LHR
46h 50m2 stops
Air Canada Logo
9:30 am - 7:26 pmLHR-MFE
39h 56m2 stops
$650Air Canada
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Wed, Sep 3 - Thu, Sep 11
British Airways Logo
6:23 pm - 2:25 pmMFE-LHR
14h 02m1 stop
British Airways Logo
3:10 pm - 10:37 pmLHR-MFE
13h 27m1 stop
$652British Airways
Find Deal
Sat, Aug 16 - Thu, Sep 4
British Airways Logo
6:10 pm - 6:25 amMFE-LHR
30h 15m1 stop
British Airways Logo
10:30 am - 7:40 pmLHR-MFE
15h 10m1 stop
$653British Airways
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Tue, Jul 22 - Wed, Aug 6
American Airlines Logo
10:42 am - 6:25 amMFE-LHR
13h 43m1 stop
American Airlines Logo
4:25 pm - 8:53 amLHR-MFE
22h 28m1 stop
$682American Airlines
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Wed, Sep 3 - Thu, Sep 11
Air Canada Logo
7:25 pm - 6:35 amMFE-LHR
29h 10m2 stops
Air Canada Logo
5:40 pm - 7:26 pmLHR-MFE
31h 46m2 stops
$693Air Canada
Find Deal
Sat, Aug 16 - Thu, Sep 4
 Logo
5:49 pm - 6:55 amMFE-LGW
31h 06m3 stops
 Logo
10:00 am - 12:34 pmLGW-MFE
32h 34m3 stops
Sat, Aug 16 - Thu, Sep 4
 Logo
5:49 pm - 6:55 amMFE-LGW
31h 06m3 stops
 Logo
12:40 pm - 12:34 pmLGW-MFE
29h 54m2 stops
Wed, Jul 9 - Thu, Jul 17
American Airlines Logo
5:12 pm - 2:25 pmMFE-LHR
15h 13m1 stop
American Airlines Logo
10:30 am - 12:12 amLHR-MFE
19h 42m1 stop
$976American Airlines
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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 March, when tickets cost $712 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,209 and $995 respectively.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$636
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 2% 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.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the morning, when round-trip flights cost $774 on average. Morning departures are around 11% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is $1,188.

Reviews of the top 4 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 8809 reviews
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
7.0Entertainment
Airline reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

2.0 MediocreJack, Jun 2025SAT - IAH
Read more United Airlines reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Food choices were very limited. Taste of the dishes was average.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

Oh my gosh, I loved my experience with United! they made me want to travel more often.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

Took off on time and successfully avoided weather that looked to be a problem along the way

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

From boarding, to attention in flight, I couldn’t fault it.

Not having to check carry on bags when plane wasn’t full. (The told us it was)

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

I had an issue with the name on my ticket vs my passport name. I was very upset that the Iberia ticket clerk had no authorization to help me and I was left to fix it. It took 19 calls of persons promising to accomplish and not doing anything before I reached someone who helped me in 10 minutes. Two of them even hung up on me. I missed my original flight because of this. Terrible customer service.

The flight was delayed twice. When the crew explained about the debris causing flat tires, I was glad they took the time to change all four.

My carry-on bag was taken from me when I boarded. It was checked through to London at no charge. It took a big of shuffling, but I was glad not to need to mind it until baggage claim.

Flight boarded three hours late for no reason other than someone made a huge error in crew scheduling. We missed our connecting flight in Madrid and got zero help from American or Iberian airlines on rebooking. We had to pay for a car to take us to the Madrid train station and pay for train tickets to Santiago. We never used our booked flight to Santiago. American claims I can submit the expenses but they are not obligated to cover them. Very frustrating.

Flight delayed Service could be better Iberia staff are not really friendly

They cancelled the flight)(they said bad weather but many other flights took off) and made us wait 5 hours in line to figure out what to do. We ended up making a new flight the next day on another airlines...I hope they honor giving us our money back

Awful. The flight wasn't actually operated by Iberia, but by American Airlines. I was unable to get my boarding pass and as a result missed my connecting flight.

More Indian vegetarian food options would have been better Availability of seat selection free of charge 72 hours before departure would be great

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

This was the second time on BA, food terrible, bathrooms gross, boarding late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress.

The flight was delayed twice and because of that, we missed our connecting flight. British Airways then attempted to put us on the last flight to Milan from London which would have kept us in the airport for 12 hours. We had to speak to several levels of bureaucracy until BA management let us fly on a flight that only kept us in the airport for two hours. If there was an earlier flight, why weren’t we put on that flight from the start? Unacceptable behavior from what was once my favorite carrier.

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

The internet was horrible. Plus they charged me $25 for service that didn't work which should have been free since I'm Concierge Key. The flight attendant Rick Young was excellent. Greeted me by name and very attentive.

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

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