$652 Find Cheap Flights from Harlingen 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 Harlingen to the United Kingdom departing on 7/13. 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 the United Kingdom

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Harlingen 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 Harlingen 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 Harlingen to the United Kingdom

Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
7:18 am - 10:25 am
HRL
-
LHR
21h 07m
2 stops
United Airlines Logo
9:30 am - 10:51 pm
LHR
-
HRL
19h 21m
2 stops
$758United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
7:18 am - 10:25 am
HRL
-
LHR
21h 07m
2 stops
United Airlines Logo
9:30 am - 10:51 pm
LHR
-
HRL
19h 21m
2 stops
$759United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
1:59 pm - 10:15 am
HRL
-
LHR
14h 16m
1 stop
United Airlines Logo
9:30 am - 10:51 pm
LHR
-
HRL
19h 21m
2 stops
$821United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
1:59 pm - 10:15 am
HRL
-
LHR
14h 16m
1 stop
United Airlines Logo
9:30 am - 10:51 pm
LHR
-
HRL
19h 21m
2 stops
$834United Airlines
Tue, Dec 1 - Mon, Dec 14
Delta Logo
2:00 pm - 7:50 am
HRL
-
LHR
35h 50m
2 stops
Delta Logo
10:00 am - 1:31 pm
LHR
-
HRL
57h 31m
2 stops
$879Delta
Tue, Dec 1 - Mon, Dec 14
Delta Logo
2:00 pm - 7:05 am
HRL
-
LHR
35h 05m
1 stop
Delta Logo
10:00 am - 1:31 pm
LHR
-
HRL
57h 31m
2 stops
$880Delta
Sun, Dec 20 - Wed, Dec 30
British Airways Logo
5:34 am - 3:35 pm
HRL
-
MAN
28h 01m
2 stops
British Airways Logo
7:50 am - 9:40 am
MAN
-
HRL
31h 50m
2 stops
$1,144British Airways
Fri, Jul 17 - Fri, Jul 24
American Airlines Logo
8:04 pm - 9:05 pm
HRL
-
MAN
19h 01m
2 stops
American Airlines Logo
6:55 am - 12:05 am
MAN
-
HRL
23h 10m
2 stops
$1,284American Airlines
Fri, Jul 17 - Fri, Jul 24
American Airlines Logo
8:04 pm - 9:05 pm
HRL
-
MAN
19h 01m
2 stops
American Airlines Logo
6:55 am - 12:05 am
MAN
-
HRL
23h 10m
2 stops
$1,285American Airlines
Fri, Jul 17 - Fri, Jul 24
Multiple Airlines Logo
8:04 pm - 5:20 pm
HRL
-
MAN
15h 16m
2 stops
Multiple Airlines Logo
6:55 am - 7:34 pm
MAN
-
HRL
18h 39m
2 stops
$1,354Multiple Airlines
Booking Insights

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

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

Which airlines provide the cheapest flights from Harlingen to the United Kingdom?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Harlingen to the United Kingdom were found on United Airlines ($758) and Delta ($879).

Find deals

Good to know

Cheapest flight$652
Flight from Harlingen to London

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Harlingen 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 Harlingen to the United Kingdom.

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

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

 
Need help choosing which airline to fly with from Harlingen 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 9894 reviews
8.1Crew
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

2.0 MediocreAnonymous, Jun 2026
SAT - ORD
Read more United Airlines reviews

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Flight cancelled instead of leaving Friday am now, maybe, leaving Sunday

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

one of the flight attendants on the Dallas to frankfurt leg was somewhat rude..

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

The Polaris experience is top notch. From departure lounge to arrival lounge. Everything was top notch. One of the best first class experience

United domestic flight was better than international flight. There was no switch to control Ac In international united flight. Food was also average,

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

Information on your arrival and departure airports

Harlingen (HRL)