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

You can take advantage of momondo’s Price Alerts by first searching for your flights to Harlingen from London Heathrow Airport . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

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 are refreshed on a daily basis.

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 travel and health documents required for your trip to London Heathrow 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$851 Cheap Flights from Harlingen to London Heathrow Airport in 2026/27

Find the cheapest flights from Harlingen to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:56 am - 6:50 amHRL Harlingen Valley Intl-LHR London Heathrow

18h 54m1 stop Dallas/Fort Worth

6:45 pm - 2:16 pmLHR London Heathrow-HRL Harlingen Valley Intl

25h 31m2 stops Madrid Barajas Dallas/Fort Worth

$851Iberia

Wed, Feb 17 - Wed, Feb 24

5:56 am - 6:50 amHRL Harlingen Valley Intl-LHR London Heathrow

18h 54m1 stop Dallas/Fort Worth

6:45 pm - 2:16 pmLHR London Heathrow-HRL Harlingen Valley Intl

25h 31m2 stops Madrid Barajas Dallas/Fort Worth

$851Iberia

Wed, Feb 17 - Wed, Feb 24

5:56 am - 6:50 amHRL Harlingen Valley Intl-LHR London Heathrow

18h 54m1 stop Dallas/Fort Worth

6:45 pm - 2:16 pmLHR London Heathrow-HRL Harlingen Valley Intl

25h 31m2 stops Madrid Barajas Dallas/Fort Worth

$852Iberia

Wed, Feb 17 - Wed, Feb 24

2:48 pm - 12:00 pmHRL Harlingen Valley Intl-LHR London Heathrow

15h 12m1 stop Dallas/Fort Worth

2:45 pm - 10:52 pmLHR London Heathrow-HRL Harlingen Valley Intl

14h 07m1 stop Dallas/Fort Worth

$891Iberia

Wed, Feb 17 - Wed, Feb 24

2:48 pm - 12:00 pmHRL Harlingen Valley Intl-LHR London Heathrow

15h 12m1 stop Dallas/Fort Worth

1:50 pm - 10:52 pmLHR London Heathrow-HRL Harlingen Valley Intl

15h 02m1 stop Dallas/Fort Worth

$891Iberia

Wed, Feb 17 - Wed, Feb 24

2:48 pm - 12:00 pmHRL Harlingen Valley Intl-LHR London Heathrow

15h 12m1 stop Dallas/Fort Worth

1:50 pm - 10:52 pmLHR London Heathrow-HRL Harlingen Valley Intl

15h 02m1 stop Dallas/Fort Worth

$892Iberia

Wed, Feb 17 - Wed, Feb 24

2:10 pm - 10:15 amHRL Harlingen Valley Intl-LHR London Heathrow

14h 05m1 stop Houston George Bush Intcntl

6:35 am - 7:40 pmLHR London Heathrow-HRL Harlingen Valley Intl

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

$897United Airlines

Wed, Feb 17 - Fri, Feb 26

7:08 am - 10:15 amHRL Harlingen Valley Intl-LHR London Heathrow

21h 07m1 stop Houston George Bush Intcntl

6:35 am - 7:40 pmLHR London Heathrow-HRL Harlingen Valley Intl

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

$897United Airlines

Sun, Feb 14 - Thu, Feb 25

7:08 am - 10:15 amHRL Harlingen Valley Intl-LHR London Heathrow

21h 07m1 stop Houston George Bush Intcntl

6:35 am - 7:40 pmLHR London Heathrow-HRL Harlingen Valley Intl

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

$897United Airlines

Sun, Feb 14 - Thu, Feb 25

2:10 pm - 10:15 amHRL Harlingen Valley Intl-LHR London Heathrow

14h 05m1 stop Houston George Bush Intcntl

6:35 am - 7:40 pmLHR London Heathrow-HRL Harlingen Valley Intl

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

$897United Airlines

Sun, Feb 14 - Fri, Feb 26

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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

Feb 14

HRL2:10 pmHarlingen Valley Intl

14h 05m

1 stop

LHR10:15 amLondon Heathrow

Feb 26

LHR6:35 amLondon Heathrow

19h 05m

2 stops

HRL7:40 pmHarlingen Valley Intl

$897

United Airlines

Feb 20

HRL4:25 pmHarlingen Valley Intl

33h 15m

1 stop

LHR7:40 amLondon Heathrow

Feb 26

LHR6:35 amLondon Heathrow

19h 05m

2 stops

HRL7:40 pmHarlingen Valley Intl

$902

United Airlines

Feb 22

HRL4:25 pmHarlingen Valley Intl

11h 50m

1 stop

LHR10:15 amLondon Heathrow

Feb 26

LHR9:30 amLondon Heathrow

36h 14m

2 stops

HRL3:44 pmHarlingen Valley Intl

$910

Air Canada flights from Harlingen to London Heathrow Airport

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

Air Canada

Feb 14

HRL7:08 amHarlingen Valley Intl

22h 12m

2 stops

LHR11:20 amLondon Heathrow

Feb 24

LHR11:10 amLondon Heathrow

38h 30m

2 stops

HRL7:40 pmHarlingen Valley Intl

$921

Air Canada

Feb 20

HRL4:25 pmHarlingen Valley Intl

32h 45m

2 stops

LHR7:10 amLondon Heathrow

Feb 26

LHR11:10 amLondon Heathrow

38h 30m

2 stops

HRL7:40 pmHarlingen Valley Intl

$922

Air Canada

Feb 18

HRL7:08 amHarlingen Valley Intl

19h 22m

2 stops

LHR8:30 amLondon Heathrow

Feb 23

LHR11:10 amLondon Heathrow

38h 30m

2 stops

HRL7:40 pmHarlingen Valley Intl

$971

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 round-trip

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

5:56 am-6:50 am

1 stop18h 54m

London Heathrow

Wed 2/24

6:45 pm-2:16 pm

2 stops25h 31m

$851

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

5:56 am-6:50 am

1 stop18h 54m

London Heathrow

Wed 2/24

6:45 pm-2:16 pm

2 stops25h 31m

$851

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

5:56 am-6:50 am

1 stop18h 54m

London Heathrow

Wed 2/24

6:45 pm-2:16 pm

2 stops25h 31m

$852

Quickest round-trip

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

2:48 pm-12:00 pm

1 stop15h 12m

London Heathrow

Wed 2/24

2:45 pm-10:52 pm

1 stop14h 07m

$891

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

2:48 pm-12:00 pm

1 stop15h 12m

London Heathrow

Wed 2/24

1:50 pm-10:52 pm

1 stop15h 02m

$891

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

2:48 pm-12:00 pm

1 stop15h 12m

London Heathrow

Wed 2/24

1:50 pm-10:52 pm

1 stop15h 02m

$892

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Wed 2/17

2:10 pm-10:15 am

1 stop14h 05m

London Heathrow

Fri 2/26

6:35 am-7:40 pm

2 stops19h 05m

$897

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 2/14

7:08 am-10:15 am

1 stop21h 07m

London Heathrow

Thu 2/25

6:35 am-7:40 pm

2 stops19h 05m

$897

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 2/14

7:08 am-10:15 am

1 stop21h 07m

London Heathrow

Thu 2/25

6:35 am-7:40 pm

2 stops19h 05m

$897

HarlingenLondon

HRL Harlingen Valley Intl - LHR London Heathrow

HRLLHR

Harlingen Valley Intl

Sun 2/14

2:10 pm-10:15 am

1 stop14h 05m

London Heathrow

Fri 2/26

6:35 am-7:40 pm

2 stops19h 05m

$897

Flights are sorted by cheapest round-trip 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 round-trip 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	$851
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 $851

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?
The straight-line distance from Harlingen Valley Intl to London Heathrow is 5112.7 mi. Flights usually cover this in 14h 05m, depending on flying conditions and air traffic around both airports.
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 are refreshed on a daily basis.
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 travel and health documents required for your trip to London Heathrow 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 London Heathrow 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 Harlingen to London Heathrow Airport

How do I get Price Alerts for flights from Harlingen to London Heathrow Airport?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Harlingen from London Heathrow Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Harlingen to London Heathrow Airport with momondo?
By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
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.

Hounslow

Gatwick

Croydon

Hayes

Haverhill

Milton Keynes

Luton

Stansted

Kingston upon Thames

Dover

Watford

Richmond

Stratford-upon-Avon

Wembley

Crawley

Worthing

Brentford

Harrow

Canterbury

Hook

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Harlingen to London. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Harlingen to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Harlingen and London 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 London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Harlingen. 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.

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Cheap flights from Harlingen to London from $851

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to London departing on 2/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Harlingen to London

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Big names and deals

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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

Air Canada flights from Harlingen to London Heathrow Airport

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

momondo Fare Finder

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

When to book flights from Harlingen to London Heathrow Airport

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Harlingen to London Heathrow Airport

Frequently asked questions about flying from Harlingen to London Heathrow Airport

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Harlingen flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year