$855 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 5/29. 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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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

Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
7:27 am - 7:45 am
HRL
-
LHR
18h 18m
1 stop
United Airlines Logo
6:55 am - 7:29 pm
LHR
-
HRL
18h 34m
2 stops
$923United Airlines
Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
5:15 am - 7:15 am
HRL
-
LHR
20h 00m
2 stops
United Airlines Logo
9:30 am - 9:44 pm
LHR
-
HRL
18h 14m
2 stops
$928United Airlines
Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
5:15 am - 7:45 am
HRL
-
LHR
20h 30m
1 stop
United Airlines Logo
7:30 am - 9:44 pm
LHR
-
HRL
20h 14m
2 stops
$930United Airlines
Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
5:15 am - 11:50 am
HRL
-
LHR
24h 35m
2 stops
United Airlines Logo
7:30 am - 9:44 pm
LHR
-
HRL
20h 14m
2 stops
$942United Airlines
Thu, Sep 24 - Wed, Oct 7
Multiple Airlines Logo
6:00 am - 10:55 am
HRL
-
LHR
22h 55m
1 stop
Multiple Airlines Logo
12:55 pm - 10:56 pm
LHR
-
HRL
16h 01m
1 stop
$945Multiple Airlines
Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
2:00 pm - 11:35 am
HRL
-
LHR
15h 35m
1 stop
United Airlines Logo
10:00 am - 9:44 pm
LHR
-
HRL
17h 44m
1 stop
$947United Airlines
Thu, Sep 24 - Wed, Oct 7
United Airlines Logo
5:16 pm - 11:35 am
HRL
-
LHR
12h 19m
1 stop
United Airlines Logo
10:00 am - 7:29 pm
LHR
-
HRL
15h 29m
1 stop
$951United Airlines
Thu, Sep 24 - Wed, Oct 7
Air Canada Logo
5:16 pm - 6:30 am
HRL
-
LHR
31h 14m
2 stops
Air Canada Logo
9:30 am - 3:34 pm
LHR
-
HRL
36h 04m
2 stops
$954Air Canada
Thu, Sep 24 - Wed, Oct 7
American Airlines Logo
4:58 pm - 2:25 pm
HRL
-
LHR
15h 27m
1 stop
American Airlines Logo
8:55 am - 4:31 pm
LHR
-
HRL
13h 36m
1 stop
$958American Airlines
Thu, Sep 24 - Wed, Oct 7
Air Canada Logo
5:16 pm - 6:30 am
HRL
-
LHR
31h 14m
2 stops
Air Canada Logo
5:40 pm - 3:34 pm
LHR
-
HRL
27h 54m
2 stops
$964Air Canada
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.

How long does a flight from Harlingen to the United Kingdom take?

The duration of a flight to the United Kingdom depends on your arrival airport. The shortest route to the United Kingdom from Harlingen is to London, which takes 20h 15m.

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Good to know

Cheapest flight$855
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 9602 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
Airline reviews

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

8.0 ExcellentJesse, Apr 2026
IAH - NRT
Read more United Airlines reviews

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

The wheelchair service is useless. They live you in different spots, not tell you anything just wait. I waited 30 minutes in Frankfurt when decided to walk the 25 minutes distance. In Budapest nobody came.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

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.

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

Information on your arrival and departure airports

Harlingen (HRL)