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

Prices for flights from London to Harlingen Valley Intl Airport are refreshed on a daily basis.

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

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 London to Harlingen Valley Intl Airport.

What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

The travel and health documents required for your trip to Harlingen Valley Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Harlingen Valley Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£743 Cheap Flights from London to Harlingen in 2026

Find the cheapest flights from London to Harlingen

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:30 - 22:48LHR London Heathrow-HRL Harlingen Valley Intl

19h 18m2 stops Frankfurt am Main Houston George Bush Intcntl

17:25 - 07:40HRL Harlingen Valley Intl-LHR London Heathrow

32h 15m1 stop Houston George Bush Intcntl

£911United Airlines

Wed, 4 Nov - Sun, 8 Nov

09:30 - 13:21LHR London Heathrow-HRL Harlingen Valley Intl

33h 51m2 stops Frankfurt am Main Houston George Bush Intcntl

17:25 - 21:20HRL Harlingen Valley Intl-LHR London Heathrow

21h 55m2 stops Houston George Bush Intcntl Newark

£912United Airlines

Wed, 4 Nov - Sun, 8 Nov

09:30 - 13:21LHR London Heathrow-HRL Harlingen Valley Intl

33h 51m2 stops Frankfurt am Main Houston George Bush Intcntl

17:25 - 21:20HRL Harlingen Valley Intl-LHR London Heathrow

21h 55m2 stops Houston George Bush Intcntl Newark

£913United Airlines

Wed, 4 Nov - Sun, 8 Nov

09:30 - 22:48LHR London Heathrow-HRL Harlingen Valley Intl

19h 18m2 stops Frankfurt am Main Houston George Bush Intcntl

17:25 - 07:40HRL Harlingen Valley Intl-LHR London Heathrow

32h 15m1 stop Houston George Bush Intcntl

£913United Airlines

Wed, 4 Nov - Sun, 8 Nov

13:50 - 22:59LHR London Heathrow-HRL Harlingen Valley Intl

15h 09m1 stop Dallas/Fort Worth

18:41 - 08:15HRL Harlingen Valley Intl-LHR London Heathrow

31h 34m1 stop Dallas/Fort Worth

£963Iberia

Wed, 4 Nov - Sun, 8 Nov

06:10 - 22:48LHR London Heathrow-HRL Harlingen Valley Intl

22h 38m2 stops Barcelona-El Prat Dallas/Fort Worth

15:35 - 12:50HRL Harlingen Valley Intl-LHR London Heathrow

15h 15m1 stop Dallas/Fort Worth

£963Iberia

Thu, 24 Sep - Mon, 28 Sep

10:00 - 22:48LHR London Heathrow-HRL Harlingen Valley Intl

18h 48m1 stop Houston George Bush Intcntl

11:25 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

16h 50m1 stop Houston George Bush Intcntl

£965United Airlines

Wed, 4 Nov - Sun, 8 Nov

10:00 - 19:47LHR London Heathrow-HRL Harlingen Valley Intl

15h 47m1 stop Houston George Bush Intcntl

11:25 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

16h 50m1 stop Houston George Bush Intcntl

£966United Airlines

Wed, 4 Nov - Sun, 8 Nov

10:00 - 22:48LHR London Heathrow-HRL Harlingen Valley Intl

18h 48m1 stop Houston George Bush Intcntl

11:25 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

16h 50m1 stop Houston George Bush Intcntl

£966United Airlines

Wed, 4 Nov - Sun, 8 Nov

08:00 - 19:44LHR London Heathrow-HRL Harlingen Valley Intl

17h 44m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

07:15 - 05:55HRL Harlingen Valley Intl-LHR London Heathrow

16h 40m2 stops Houston George Bush Intcntl Newark

£980United Airlines

Thu, 24 Sep - Mon, 28 Sep

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Iberia flights from London to Harlingen

Our best Iberia deals on London to Harlingen flight tickets

Iberia

4 Nov

LHR13:50London Heathrow

15h 09m

1 stop

HRL22:59Harlingen Valley Intl

8 Nov

HRL18:41Harlingen Valley Intl

31h 34m

1 stop

LHR08:15London Heathrow

£963

Iberia

24 Sept

LHR06:10London Heathrow

22h 38m

2 stops

HRL22:48Harlingen Valley Intl

28 Sept

HRL15:35Harlingen Valley Intl

15h 15m

1 stop

LHR12:50London Heathrow

£963

Iberia

19 Dec

LHR08:20London Heathrow

15h 31m

1 stop

HRL17:51Harlingen Valley Intl

2 Jan

HRL18:21Harlingen Valley Intl

31h 54m

1 stop

LHR08:15London Heathrow

£1,306

United Airlines flights from London to Harlingen

Our best United Airlines deals on London to Harlingen flight tickets

United Airlines

4 Nov

LHR09:30London Heathrow

19h 18m

2 stops

HRL22:48Harlingen Valley Intl

8 Nov

HRL17:25Harlingen Valley Intl

32h 15m

1 stop

LHR07:40London Heathrow

£911

United Airlines

4 Nov

LHR09:30London Heathrow

33h 51m

2 stops

HRL13:21Harlingen Valley Intl

8 Nov

HRL17:25Harlingen Valley Intl

21h 55m

2 stops

LHR21:20London Heathrow

£912

United Airlines

4 Nov

LHR09:30London Heathrow

33h 51m

2 stops

HRL13:21Harlingen Valley Intl

8 Nov

HRL17:25Harlingen Valley Intl

21h 55m

2 stops

LHR21:20London Heathrow

£912

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

09:30-22:48

2 stops19h 18m

Harlingen Valley Intl

Sun 8/11

17:25-07:40

1 stop32h 15m

£911

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

09:30-13:21

2 stops33h 51m

Harlingen Valley Intl

Sun 8/11

17:25-21:20

2 stops21h 55m

£912

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

09:30-13:21

2 stops33h 51m

Harlingen Valley Intl

Sun 8/11

17:25-21:20

2 stops21h 55m

£912

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

09:30-22:48

2 stops19h 18m

Harlingen Valley Intl

Sun 8/11

17:25-07:40

1 stop32h 15m

£913

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

13:50-22:59

1 stop15h 09m

Harlingen Valley Intl

Sun 8/11

18:41-08:15

1 stop31h 34m

£963

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Thu 24/9

06:10-22:48

2 stops22h 38m

Harlingen Valley Intl

Mon 28/9

15:35-12:50

1 stop15h 15m

£963

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

10:00-22:48

1 stop18h 48m

Harlingen Valley Intl

Sun 8/11

11:25-10:15

1 stop16h 50m

£965

Fastest return journey

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

10:00-19:47

1 stop15h 47m

Harlingen Valley Intl

Sun 8/11

11:25-10:15

1 stop16h 50m

£966

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Wed 4/11

10:00-22:48

1 stop18h 48m

Harlingen Valley Intl

Sun 8/11

11:25-10:15

1 stop16h 50m

£966

LondonHarlingen

LHR London Heathrow - HRL Harlingen Valley Intl

LHRHRL

London Heathrow

Thu 24/9

08:00-19:44

2 stops17h 44m

Harlingen Valley Intl

Mon 28/9

07:15-05:55

2 stops16h 40m

£980

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Harlingen

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

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

United Airlines, Finnair, and Iberia are the most popular carriers operating from London to Harlingen Valley Intl

When to book flights from London to Harlingen

Are you open to changing your travel dates? Check out the ideal times to fly from London to Harlingen according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Harlingen (LON to HRL) flight deals and tips

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

Best price found	£743
Fastest flight time	20h 33m
Direct flights	None

The best one-way flight to Harlingen from London in the past 72 hours is £743. The best return flight deal from London to Harlingen found on momondo in the last 72 hours is £911.

The fastest flight from London to Harlingen takes 20h 33m

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

Search flight deals

Frequently asked questions about flying from London to Harlingen

How far is London to Harlingen Valley Intl by plane?
Harlingen Valley Intl is 5125.1 mi away from London. Typically, this will take 20h 33m by plane in normal conditions.
When did momondo last update prices for flights from London to Harlingen Valley Intl Airport?
Prices for flights from London to Harlingen Valley Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from London to Harlingen Valley Intl Airport?
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 London to Harlingen Valley Intl Airport.
What documentation or ID do you need to fly to Harlingen Valley Intl Airport?
The travel and health documents required for your trip to Harlingen Valley Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Harlingen Valley Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

It is quick and easy to find London to Harlingen flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Harlingen that suits you.

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

All flight searches from London to Harlingen on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Harlingen?

momondo provides multiple filters to help you find the best flight to Harlingen from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Harlingen from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.