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

United Airlines is the most popular carrier operating from Harlingen Valley Intl to 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 many operators does momondo search for flights from Harlingen Valley Intl Airport to United Kingdom?

As of September 2026, there is 1 operator available to choose from for flights from Harlingen Valley Intl Airport to United Kingdom.

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.

$517 Cheap Flights from Harlingen to the United Kingdom in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to the United Kingdom

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:13 pm - 1:05 pmHRL Harlingen Valley Intl-LHR London Heathrow

16h 52m1 stop Minneapolis St Paul

12:25 pm - 1:23 pmLHR London Heathrow-HRL Harlingen Valley Intl

30h 58m1 stop Minneapolis St Paul

$807Delta

Fri, Oct 16 - Thu, Oct 22

2:13 pm - 1:15 pmHRL Harlingen Valley Intl-LHR London Heathrow

17h 02m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

12:25 pm - 1:23 pmLHR London Heathrow-HRL Harlingen Valley Intl

30h 58m1 stop Minneapolis St Paul

$811Delta

Fri, Oct 16 - Thu, Oct 22

5:05 am - 1:20 pmHRL Harlingen Valley Intl-LHR London Heathrow

26h 15m2 stops Houston George Bush Intcntl Vancouver Intl

7:25 am - 7:44 pmLHR London Heathrow-HRL Harlingen Valley Intl

18h 19m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl

$867United Airlines

Fri, Oct 16 - Thu, Oct 22

2:00 pm - 7:40 amHRL Harlingen Valley Intl-LHR London Heathrow

11h 40m1 stop Houston George Bush Intcntl

10:00 am - 9:59 pmLHR London Heathrow-HRL Harlingen Valley Intl

17h 59m1 stop Houston George Bush Intcntl

$1,089United Airlines

Wed, Dec 16 - Tue, Dec 22

5:25 pm - 8:35 pmHRL Harlingen Valley Intl-LHR London Heathrow

21h 10m2 stops Houston George Bush Intcntl Newark

5:30 pm - 10:48 pmLHR London Heathrow-HRL Harlingen Valley Intl

35h 18m2 stops Frankfurt am Main Houston George Bush Intcntl

$1,122United Airlines

Mon, Nov 16 - Wed, Nov 18

7:15 am - 9:10 amHRL Harlingen Valley Intl-LHR London Heathrow

19h 55m2 stops Houston George Bush Intcntl Newark

10:00 am - 9:59 pmLHR London Heathrow-HRL Harlingen Valley Intl

17h 59m1 stop Houston George Bush Intcntl

$1,156United Airlines

Wed, Dec 16 - Tue, Dec 22

7:15 am - 9:00 amHRL Harlingen Valley Intl-MAN Manchester

43h 45m2 stops Houston George Bush Intcntl Toronto Pearson Intl

6:00 am - 9:59 pmMAN Manchester-HRL Harlingen Valley Intl

21h 59m2 stops Frankfurt am Main Houston George Bush Intcntl

$1,368United Airlines

Tue, Dec 8 - Fri, Dec 11

7:15 am - 9:00 amHRL Harlingen Valley Intl-MAN Manchester

43h 45m2 stops Houston George Bush Intcntl Toronto Pearson Intl

6:00 am - 9:59 pmMAN Manchester-HRL Harlingen Valley Intl

21h 59m2 stops Frankfurt am Main Houston George Bush Intcntl

$1,388United Airlines

Tue, Dec 8 - Fri, Dec 11

7:10 am - 11:30 amHRL Harlingen Valley Intl-MAN Manchester

46h 20m2 stops Houston George Bush Intcntl Frankfurt am Main

6:00 am - 10:48 pmMAN Manchester-HRL Harlingen Valley Intl

22h 48m2 stops Frankfurt am Main Houston George Bush Intcntl

$1,552United Airlines

Sun, Nov 1 - Sun, Nov 8

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Delta flights from Harlingen to United Kingdom

Our best Delta deals on Harlingen to United Kingdom flight tickets

Delta

Oct 16

HRL2:13 pmHarlingen Valley Intl

16h 52m

1 stop

LHR1:05 pmLondon Heathrow

Oct 22

LHR12:25 pmLondon Heathrow

30h 58m

1 stop

HRL1:23 pmHarlingen Valley Intl

$807

Delta

Oct 16

HRL2:13 pmHarlingen Valley Intl

17h 02m

2 stops

LHR1:15 pmLondon Heathrow

Oct 22

LHR12:25 pmLondon Heathrow

30h 58m

1 stop

HRL1:23 pmHarlingen Valley Intl

$811

United Airlines flights from Harlingen to United Kingdom

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

United Airlines

Oct 16

HRL5:05 amHarlingen Valley Intl

26h 15m

2 stops

LHR1:20 pmLondon Heathrow

Oct 22

LHR7:25 amLondon Heathrow

18h 19m

2 stops

HRL7:44 pmHarlingen Valley Intl

$867

United Airlines

Dec 16

HRL2:00 pmHarlingen Valley Intl

11h 40m

1 stop

LHR7:40 amLondon Heathrow

Dec 22

LHR10:00 amLondon Heathrow

17h 59m

1 stop

HRL9:59 pmHarlingen Valley Intl

$1,089

United Airlines

Nov 16

HRL5:25 pmHarlingen Valley Intl

21h 10m

2 stops

LHR8:35 pmLondon Heathrow

Nov 18

LHR5:30 pmLondon Heathrow

35h 18m

2 stops

HRL10:48 pmHarlingen Valley Intl

$1,122

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 Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Fri 10/16

2:13 pm-1:05 pm

1 stop16h 52m

London Heathrow

Thu 10/22

12:25 pm-1:23 pm

1 stop30h 58m

$807

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Fri 10/16

2:13 pm-1:15 pm

2 stops17h 02m

London Heathrow

Thu 10/22

12:25 pm-1:23 pm

1 stop30h 58m

$811

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Fri 10/16

5:05 am-1:20 pm

2 stops26h 15m

London Heathrow

Thu 10/22

7:25 am-7:44 pm

2 stops18h 19m

$867

Quickest round-trip

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 12/16

2:00 pm-7:40 am

1 stop11h 40m

London Heathrow

Tue 12/22

10:00 am-9:59 pm

1 stop17h 59m

$1,089

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Mon 11/16

5:25 pm-8:35 pm

2 stops21h 10m

London Heathrow

Wed 11/18

5:30 pm-10:48 pm

2 stops35h 18m

$1,122

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 12/16

7:15 am-9:10 am

2 stops19h 55m

London Heathrow

Tue 12/22

10:00 am-9:59 pm

1 stop17h 59m

$1,156

HarlingenManchester

HRL Harlingen Valley Intl - MAN Manchester

HRLMAN

Harlingen Valley Intl

Tue 12/8

7:15 am-9:00 am

2 stops43h 45m

Manchester

Fri 12/11

6:00 am-9:59 pm

2 stops21h 59m

$1,368

HarlingenManchester

HRL Harlingen Valley Intl - MAN Manchester

HRLMAN

Harlingen Valley Intl

Tue 12/8

7:15 am-9:00 am

2 stops43h 45m

Manchester

Fri 12/11

6:00 am-9:59 pm

2 stops21h 59m

$1,388

HarlingenManchester

HRL Harlingen Valley Intl - MAN Manchester

HRLMAN

Harlingen Valley Intl

Sun 11/1

7:10 am-11:30 am

2 stops46h 20m

Manchester

Sun 11/8

6:00 am-10:48 pm

2 stops22h 48m

$1,552

Cheapest one-way

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 12/16

5:40 am-10:25 am

2 stops22h 45m

$517

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 16% 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

Best Price Found	$517
Fastest flight time	16h 52m
Direct flights	None

The best one-way flight to United Kingdom from Harlingen in the past 72 hours is $517. The best round-trip flight deal from Harlingen to United Kingdom found on momondo in the last 72 hours is $807.

The fastest flight from Harlingen to United Kingdom takes 16h 52m

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 many operators does momondo search for flights from Harlingen Valley Intl Airport to United Kingdom?
As of September 2026, there is 1 operator available to choose from for flights from Harlingen Valley Intl Airport to United Kingdom.
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
American Airlines	PriceFrom $1,284	Free Cancellation	Rating 7.1 12,078 reviews		Search American 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.