What is the cheapest airline that flies from Harlingen Valley Intl to United Kingdom?

United Airlines and Iberia are the most popular carriers operating from Harlingen Valley Intl to United Kingdom

What airlines fly to United Kingdom?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to United Kingdom from Harlingen according to our data. United Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 3 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Harlingen Valley Intl Airport to United Kingdom?

Prices for flights from Harlingen Valley Intl Airport to United Kingdom are updated daily.

How old do you have to be to fly from Harlingen Valley Intl Airport to United Kingdom?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$843 Cheap Flights from Harlingen to the United Kingdom in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to the United Kingdom

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:43 pm - 2:25 pm

HRL

LHR

13h 42m

1 stop

6:15 am - 10:56 pm

LHR

HRL

22h 41m

2 stops

$871Iberia

Tue, Sep 8 - Tue, Sep 15

5:54 am - 9:00 am

HRL

LHR

21h 06m

1 stop

9:15 am - 10:04 am

LHR

HRL

30h 49m

2 stops

$877Iberia

Tue, Aug 11 - Tue, Aug 25

5:18 pm - 9:20 pm

HRL

LHR

22h 02m

2 stops

6:55 am - 9:52 pm

LHR

HRL

20h 57m

2 stops

$879United Airlines

Sat, Oct 10 - Thu, Oct 15

5:18 pm - 7:45 am

HRL

LHR

32h 27m

1 stop

7:25 am - 7:33 pm

LHR

HRL

18h 08m

2 stops

$880United Airlines

Sat, Oct 10 - Thu, Oct 15

5:15 am - 6:30 am

HRL

LHR

19h 15m

2 stops

2:05 pm - 9:44 pm

LHR

HRL

37h 39m

2 stops

$886United Airlines

Tue, Aug 11 - Tue, Aug 25

5:16 pm - 10:00 am

HRL

LHR

34h 44m

2 stops

5:40 pm - 1:14 pm

LHR

HRL

25h 34m

2 stops

$896Air Canada

Tue, Sep 8 - Tue, Sep 15

2:00 pm - 11:35 am

HRL

LHR

15h 35m

1 stop

10:00 am - 9:44 pm

LHR

HRL

17h 44m

1 stop

$903United Airlines

Tue, Aug 11 - Tue, Aug 25

6:43 pm - 2:25 pm

HRL

LHR

13h 42m

1 stop

8:55 am - 4:31 pm

LHR

HRL

13h 36m

1 stop

$904Iberia

Tue, Sep 8 - Tue, Sep 15

8:03 pm - 6:20 am

HRL

LHR

28h 17m

1 stop

8:55 am - 4:31 pm

LHR

HRL

13h 36m

1 stop

$910Iberia

Sat, Oct 10 - Thu, Oct 15

5:16 pm - 11:35 am

HRL

LHR

12h 19m

1 stop

12:05 pm - 3:58 pm

LHR

HRL

33h 53m

2 stops

$937United Airlines

Mon, Sep 21 - Sat, Sep 26

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United Airlines flights from Harlingen to United Kingdom

Our best United Airlines deals on Harlingen to United Kingdom flight tickets

United Airlines

Oct 10

HRL5:18 pmHarlingen Valley Intl

22h 02m

2 stops

LHR9:20 pmLondon Heathrow

Oct 15

LHR6:55 amLondon Heathrow

20h 57m

2 stops

HRL9:52 pmHarlingen Valley Intl

$879

United Airlines

Oct 10

HRL5:18 pmHarlingen Valley Intl

32h 27m

1 stop

LHR7:45 amLondon Heathrow

Oct 15

LHR7:25 amLondon Heathrow

18h 08m

2 stops

HRL7:33 pmHarlingen Valley Intl

$880

United Airlines

Aug 11

HRL5:15 amHarlingen Valley Intl

19h 15m

2 stops

LHR6:30 amLondon Heathrow

Aug 25

LHR2:05 pmLondon Heathrow

37h 39m

2 stops

HRL9:44 pmHarlingen Valley Intl

$886

American Airlines flights from Harlingen to United Kingdom

Our best American Airlines deals on Harlingen to United Kingdom flight tickets

American Airlines

May 19

HRL10:47 amHarlingen Valley Intl

16h 23m

2 stops

LHR9:10 amLondon Heathrow

Jun 3

LHR8:50 amLondon Heathrow

21h 24m

2 stops

HRL12:14 amHarlingen Valley Intl

$1,315

American Airlines

May 16

HRL6:00 amHarlingen Valley Intl

24h 50m

1 stop

LHR12:50 pmLondon Heathrow

Jun 5

LHR8:55 amLondon Heathrow

13h 30m

1 stop

HRL4:25 pmHarlingen Valley Intl

$1,414

American Airlines

May 16

HRL6:00 amHarlingen Valley Intl

24h 50m

1 stop

LHR12:50 pmLondon Heathrow

Jun 4

LHR12:55 pmLondon Heathrow

27h 18m

1 stop

HRL10:13 amHarlingen Valley Intl

$1,421

momondo Fare Finder

Use the filters below to find and compare flights from Harlingen to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 9/8

6:43 pm-2:25 pm

1 stop13h 42m

London Heathrow

Tue 9/15

6:15 am-10:56 pm

2 stops22h 41m

$871

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/11

5:54 am-9:00 am

1 stop21h 06m

London Heathrow

Tue 8/25

9:15 am-10:04 am

2 stops30h 49m

$877

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

5:18 pm-9:20 pm

2 stops22h 02m

London Heathrow

Thu 10/15

6:55 am-9:52 pm

2 stops20h 57m

$879

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

5:18 pm-7:45 am

1 stop32h 27m

London Heathrow

Thu 10/15

7:25 am-7:33 pm

2 stops18h 08m

$880

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/11

5:15 am-6:30 am

2 stops19h 15m

London Heathrow

Tue 8/25

2:05 pm-9:44 pm

2 stops37h 39m

$886

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 9/8

5:16 pm-10:00 am

2 stops34h 44m

London Heathrow

Tue 9/15

5:40 pm-1:14 pm

2 stops25h 34m

$896

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/11

2:00 pm-11:35 am

1 stop15h 35m

London Heathrow

Tue 8/25

10:00 am-9:44 pm

1 stop17h 44m

$903

Quickest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 9/8

6:43 pm-2:25 pm

1 stop13h 42m

London Heathrow

Tue 9/15

8:55 am-4:31 pm

1 stop13h 36m

$904

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

8:03 pm-6:20 am

1 stop28h 17m

London Heathrow

Thu 10/15

8:55 am-4:31 pm

1 stop13h 36m

$910

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 9/21

5:16 pm-11:35 am

1 stop12h 19m

London Heathrow

Sat 9/26

12:05 pm-3:58 pm

2 stops33h 53m

$937

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Harlingen to United Kingdom flights?

You could potentially save up to 29% on your flight if you consider stops on a Harlingen to United Kingdom flight.

Cheap Harlingen to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to United Kingdom

Fastest flight time	12h 19m
Direct flights	None

The fastest flight from Harlingen to United Kingdom takes 12h 19m

There are no direct flights from Harlingen to United Kingdom. There are no popular flight routes from Harlingen to United Kingdom.

Search flight deals

Frequently asked questions about flying from Harlingen to the United Kingdom

When did momondo last update prices for flights from Harlingen Valley Intl Airport to United Kingdom?
Prices for flights from Harlingen Valley Intl Airport to United Kingdom are updated daily.
How old do you have to be to fly from Harlingen Valley Intl Airport to United Kingdom?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Harlingen to United Kingdom

Compare and see reviews for airlines that fly from Harlingen to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $1,008	Free Cancellation	Rating 7.4 9,677 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to United Kingdom?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harlingen to United Kingdom for you.

Can I find flights from Harlingen to United Kingdom with flexible booking policies on momondo?

momondo does allow users to show only those flights to United Kingdom from Harlingen which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Harlingen to United Kingdom?

momondo helps you find the best flight between Harlingen and United Kingdom by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Harlingen to United Kingdom right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Harlingen to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.