How do I get Price Alerts for flights from London to Harlingen?

Confirm your travel details to search for the latest offers for flights from London to Harlingen . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from London to Harlingen with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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.

£970 Cheap Flights from London to Harlingen in 2026

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Find the cheapest flights from London to Harlingen

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:00 - 19:29

LHR

HRL

15h 29m

1 stop

17:16 - 07:45

HRL

LHR

32h 29m

1 stop

£970United Airlines

Wed, 2 Sep - Sun, 6 Sep

10:00 - 19:29

LHR

HRL

15h 29m

1 stop

17:16 - 07:45

HRL

LHR

32h 29m

1 stop

£972United Airlines

Wed, 2 Sep - Sun, 6 Sep

08:00 - 19:29

LHR

HRL

17h 29m

2 stops

17:16 - 07:45

HRL

LHR

32h 29m

1 stop

£975United Airlines

Wed, 2 Sep - Sun, 6 Sep

07:45 - 19:29

LHR

HRL

17h 44m

2 stops

17:16 - 07:45

HRL

LHR

32h 29m

1 stop

£986United Airlines

Wed, 2 Sep - Sun, 6 Sep

10:25 - 21:44

LHR

HRL

17h 19m

2 stops

07:27 - 06:55

HRL

LHR

17h 28m

2 stops

£1,000United Airlines

Wed, 2 Sep - Sun, 6 Sep

08:00 - 19:29

LHR

HRL

17h 29m

2 stops

07:27 - 06:55

HRL

LHR

17h 28m

2 stops

£1,002United Airlines

Wed, 2 Sep - Sun, 6 Sep

11:05 - 21:44

LHR

HRL

16h 39m

2 stops

07:27 - 06:45

HRL

LHR

17h 18m

2 stops

£1,004United Airlines

Wed, 2 Sep - Sun, 6 Sep

08:00 - 19:29

LHR

HRL

17h 29m

2 stops

07:27 - 06:45

HRL

LHR

17h 18m

2 stops

£1,016United Airlines

Wed, 2 Sep - Sun, 6 Sep

07:30 - 21:54

LHR

HRL

20h 24m

2 stops

14:05 - 07:55

HRL

LHR

11h 50m

1 stop

£1,077United Airlines

Fri, 22 May - Fri, 29 May

13:40 - 21:54

LHR

HRL

14h 14m

1 stop

07:20 - 07:55

HRL

LHR

18h 35m

1 stop

£1,091United Airlines

Fri, 22 May - Fri, 29 May

United Airlines flights from London to Harlingen

Our best United Airlines deals on London to Harlingen flight tickets

United Airlines

2 Sept

LHR08:00London Heathrow

17h 29m

2 stops

HRL19:29Harlingen Valley Intl

6 Sept

HRL17:16Harlingen Valley Intl

32h 29m

1 stop

LHR07:45London Heathrow

£970

United Airlines

2 Sept

LHR10:00London Heathrow

15h 29m

1 stop

HRL19:29Harlingen Valley Intl

6 Sept

HRL17:16Harlingen Valley Intl

32h 29m

1 stop

LHR07:45London Heathrow

£972

United Airlines

2 Sept

LHR08:00London Heathrow

17h 29m

2 stops

HRL19:29Harlingen Valley Intl

6 Sept

HRL17:16Harlingen Valley Intl

32h 29m

1 stop

LHR07:45London Heathrow

£975

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

10:00-19:29

1 stop15h 29m

Harlingen Valley Intl

Sun 6/9

17:16-07:45

1 stop32h 29m

£970

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

10:00-19:29

1 stop15h 29m

Harlingen Valley Intl

Sun 6/9

17:16-07:45

1 stop32h 29m

£972

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

08:00-19:29

2 stops17h 29m

Harlingen Valley Intl

Sun 6/9

17:16-07:45

1 stop32h 29m

£975

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

07:45-19:29

2 stops17h 44m

Harlingen Valley Intl

Sun 6/9

17:16-07:45

1 stop32h 29m

£986

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

10:25-21:44

2 stops17h 19m

Harlingen Valley Intl

Sun 6/9

07:27-06:55

2 stops17h 28m

£1,000

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

08:00-19:29

2 stops17h 29m

Harlingen Valley Intl

Sun 6/9

07:27-06:55

2 stops17h 28m

£1,002

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

11:05-21:44

2 stops16h 39m

Harlingen Valley Intl

Sun 6/9

07:27-06:45

2 stops17h 18m

£1,004

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 2/9

08:00-19:29

2 stops17h 29m

Harlingen Valley Intl

Sun 6/9

07:27-06:45

2 stops17h 18m

£1,016

Fastest return journey

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Fri 22/5

07:30-21:54

2 stops20h 24m

Harlingen Valley Intl

Fri 29/5

14:05-07:55

1 stop11h 50m

£1,077

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Fri 22/5

13:40-21:54

1 stop14h 14m

Harlingen Valley Intl

Fri 29/5

07:20-07:55

1 stop18h 35m

£1,091

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

Fastest flight time	17h 44m
Direct flights	None

The fastest flight from London to Harlingen takes 17h 44m

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

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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 17h 44m 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.

Frequently asked questions about flying from London to Harlingen

How do I get Price Alerts for flights from London to Harlingen?
Confirm your travel details to search for the latest offers for flights from London to Harlingen. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from London to Harlingen with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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.