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

Confirm your travel details to search for the latest offers for flights from Harlingen to London Heathrow Airport . 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 Harlingen to London Heathrow Airport with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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

Prices for flights from Harlingen Valley Intl Airport to London Heathrow Airport were last updated today.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£644 Cheap Flights from Harlingen to London Heathrow Airport in 2026/27

Find the cheapest flights from Harlingen to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

05:56 - 06:50HRL Harlingen Valley Intl-LHR London Heathrow

18h 54m1 stop Dallas/Fort Worth

18:45 - 14:16LHR London Heathrow-HRL Harlingen Valley Intl

25h 31m2 stops Madrid Barajas Dallas/Fort Worth

£644Iberia

Wed, 17 Feb - Wed, 24 Feb

05:56 - 06:50HRL Harlingen Valley Intl-LHR London Heathrow

18h 54m1 stop Dallas/Fort Worth

18:45 - 14:16LHR London Heathrow-HRL Harlingen Valley Intl

25h 31m2 stops Madrid Barajas Dallas/Fort Worth

£645Iberia

Wed, 17 Feb - Wed, 24 Feb

14:48 - 12:00HRL Harlingen Valley Intl-LHR London Heathrow

15h 12m1 stop Dallas/Fort Worth

14:45 - 22:52LHR London Heathrow-HRL Harlingen Valley Intl

14h 07m1 stop Dallas/Fort Worth

£674Iberia

Wed, 17 Feb - Wed, 24 Feb

14:48 - 12:00HRL Harlingen Valley Intl-LHR London Heathrow

15h 12m1 stop Dallas/Fort Worth

13:50 - 22:52LHR London Heathrow-HRL Harlingen Valley Intl

15h 02m1 stop Dallas/Fort Worth

£675Iberia

Wed, 17 Feb - Wed, 24 Feb

07:08 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

21h 07m1 stop Houston George Bush Intcntl

06:35 - 19:40LHR London Heathrow-HRL Harlingen Valley Intl

19h 05m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl

£679United Airlines

Sun, 14 Feb - Thu, 25 Feb

16:25 - 07:40HRL Harlingen Valley Intl-LHR London Heathrow

33h 15m1 stop Houston George Bush Intcntl

06:35 - 19:40LHR London Heathrow-HRL Harlingen Valley Intl

19h 05m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl

£682United Airlines

Sat, 20 Feb - Thu, 25 Feb

17:10 - 09:55HRL Harlingen Valley Intl-LHR London Heathrow

34h 45m2 stops Minneapolis St Paul Boston Logan Intl

06:30 - 16:17LHR London Heathrow-HRL Harlingen Valley Intl

39h 47m2 stops Amsterdam Schiphol Minneapolis St Paul

£684Delta

Sun, 14 Feb - Fri, 26 Feb

14:10 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

14h 05m1 stop Houston George Bush Intcntl

07:30 - 13:35LHR London Heathrow-HRL Harlingen Valley Intl

36h 05m2 stops Frankfurt am Main Houston George Bush Intcntl

£687United Airlines

Sun, 14 Feb - Thu, 18 Feb

17:10 - 13:45HRL Harlingen Valley Intl-LHR London Heathrow

38h 35m2 stops Minneapolis St Paul Paris Charles de Gaulle

11:45 - 16:17LHR London Heathrow-HRL Harlingen Valley Intl

58h 32m2 stops Amsterdam Schiphol Minneapolis St Paul

£688Delta

Sun, 14 Feb - Thu, 25 Feb

16:25 - 10:15HRL Harlingen Valley Intl-LHR London Heathrow

11h 50m1 stop Houston George Bush Intcntl

09:30 - 15:44LHR London Heathrow-HRL Harlingen Valley Intl

36h 14m2 stops Frankfurt am Main Houston George Bush Intcntl

£688United Airlines

Mon, 22 Feb - Fri, 26 Feb

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United Airlines flights from Harlingen to London Heathrow Airport

Our best United Airlines deals on Harlingen to London Heathrow Airport flight tickets

United Airlines

14 Feb

HRL14:10Harlingen Valley Intl

14h 05m

1 stop

LHR10:15London Heathrow

26 Feb

LHR06:35London Heathrow

19h 05m

2 stops

HRL19:40Harlingen Valley Intl

£679

United Airlines

20 Feb

HRL16:25Harlingen Valley Intl

33h 15m

1 stop

LHR07:40London Heathrow

26 Feb

LHR06:35London Heathrow

19h 05m

2 stops

HRL19:40Harlingen Valley Intl

£682

United Airlines

14 Feb

HRL14:10Harlingen Valley Intl

14h 05m

1 stop

LHR10:15London Heathrow

18 Feb

LHR07:30London Heathrow

36h 05m

2 stops

HRL13:35Harlingen Valley Intl

£687

Air Canada flights from Harlingen to London Heathrow Airport

Our best Air Canada deals on Harlingen to London Heathrow Airport flight tickets

Air Canada

14 Feb

HRL07:08Harlingen Valley Intl

22h 12m

2 stops

LHR11:20London Heathrow

24 Feb

LHR11:10London Heathrow

38h 30m

2 stops

HRL19:40Harlingen Valley Intl

£697

Air Canada

20 Feb

HRL16:25Harlingen Valley Intl

32h 45m

2 stops

LHR07:10London Heathrow

26 Feb

LHR11:10London Heathrow

38h 30m

2 stops

HRL19:40Harlingen Valley Intl

£698

Air Canada

18 Feb

HRL07:08Harlingen Valley Intl

19h 22m

2 stops

LHR08:30London Heathrow

23 Feb

LHR11:10London Heathrow

38h 30m

2 stops

HRL19:40Harlingen Valley Intl

£735

momondo Fare Finder

Use the filters below to find and compare flights from Harlingen to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 17/2

05:56-06:50

1 stop18h 54m

London Heathrow

Wed 24/2

18:45-14:16

2 stops25h 31m

£644

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 17/2

05:56-06:50

1 stop18h 54m

London Heathrow

Wed 24/2

18:45-14:16

2 stops25h 31m

£645

Fastest return journey

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 17/2

14:48-12:00

1 stop15h 12m

London Heathrow

Wed 24/2

14:45-22:52

1 stop14h 07m

£674

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 17/2

14:48-12:00

1 stop15h 12m

London Heathrow

Wed 24/2

13:50-22:52

1 stop15h 02m

£675

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 14/2

07:08-10:15

1 stop21h 07m

London Heathrow

Thu 25/2

06:35-19:40

2 stops19h 05m

£679

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sat 20/2

16:25-07:40

1 stop33h 15m

London Heathrow

Thu 25/2

06:35-19:40

2 stops19h 05m

£682

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 14/2

17:10-09:55

2 stops34h 45m

London Heathrow

Fri 26/2

06:30-16:17

2 stops39h 47m

£684

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 14/2

14:10-10:15

1 stop14h 05m

London Heathrow

Thu 18/2

07:30-13:35

2 stops36h 05m

£687

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 14/2

17:10-13:45

2 stops38h 35m

London Heathrow

Thu 25/2

11:45-16:17

2 stops58h 32m

£688

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Mon 22/2

16:25-10:15

1 stop11h 50m

London Heathrow

Fri 26/2

09:30-15:44

2 stops36h 14m

£688

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Harlingen to London Heathrow Airport

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

Estimated return price

Cheap Harlingen to London Heathrow Airport (HRL to LHR) flight deals and tips

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

Best price found	£644
Fastest flight time	14h 05m
Direct flights	None

The best flight deal from Harlingen to London Heathrow Airport found on momondo in the last 72 hours is £644

The fastest flight from Harlingen to London Heathrow Airport takes 14h 05m

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

Search flight deals

Frequently asked questions about flying from Harlingen to London Heathrow Airport

How far is Harlingen Valley Intl to London Heathrow by plane?
There are 5112.7 mi between Harlingen Valley Intl and London Heathrow. In terms of flight time, this usually takes a little over 14h 05m.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to London Heathrow Airport?
Prices for flights from Harlingen Valley Intl Airport to London Heathrow Airport were last updated today.
How old do you have to be to fly from Harlingen Valley Intl Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Harlingen to London Heathrow Airport

How do I get Price Alerts for flights from Harlingen to London Heathrow Airport?
Confirm your travel details to search for the latest offers for flights from Harlingen to London Heathrow Airport. 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 Harlingen to London Heathrow Airport with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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Why use momondo?

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

Finding the right flight to London from Harlingen is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Harlingen to London.

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

Of course. momondo tracks the price of Harlingen to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.