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.

£374 Cheap Flights from Harlingen, Texas to London Heathrow Airport in 2026

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Harlingen, Texas to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:16 - 11:35

HRL

LHR

12h 19m

1 stop

07:30 - 21:44

LHR

HRL

20h 14m

2 stops

£587United Airlines

Sun, 23 Aug - Thu, 27 Aug

14:00 - 11:35

HRL

LHR

15h 35m

1 stop

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£588United Airlines

Sun, 23 Aug - Thu, 27 Aug

05:15 - 05:55

HRL

LHR

18h 40m

2 stops

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£590United Airlines

Sun, 23 Aug - Thu, 27 Aug

07:27 - 06:45

HRL

LHR

17h 18m

2 stops

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£591United Airlines

Sun, 23 Aug - Thu, 27 Aug

14:00 - 11:35

HRL

LHR

15h 35m

1 stop

10:00 - 19:29

LHR

HRL

15h 29m

1 stop

£601United Airlines

Sun, 23 Aug - Thu, 27 Aug

20:03 - 14:25

HRL

LHR

12h 22m

1 stop

07:50 - 22:51

LHR

HRL

21h 01m

2 stops

£620Iberia

Wed, 29 Apr - Wed, 6 May

07:27 - 11:35

HRL

LHR

22h 08m

1 stop

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£623United Airlines

Sun, 23 Aug - Thu, 27 Aug

14:00 - 07:40

HRL

LHR

11h 40m

1 stop

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£625United Airlines

Sun, 23 Aug - Thu, 27 Aug

05:15 - 05:55

HRL

LHR

18h 40m

2 stops

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£626United Airlines

Sun, 23 Aug - Thu, 27 Aug

05:15 - 06:45

HRL

LHR

19h 30m

2 stops

09:30 - 21:44

LHR

HRL

18h 14m

2 stops

£628United Airlines

Sun, 23 Aug - Thu, 27 Aug

Iberia flights from Harlingen, Texas to London Heathrow Airport

Our best Iberia deals on Harlingen, Texas to London Heathrow Airport flight tickets

Iberia

29 Apr

HRL20:03Harlingen Valley Intl

12h 22m

1 stop

LHR14:25London Heathrow

6 May

LHR07:50London Heathrow

21h 01m

2 stops

HRL22:51Harlingen Valley Intl

£620

Iberia

1 May

HRL10:47Harlingen Valley Intl

15h 18m

1 stop

LHR08:05London Heathrow

7 May

LHR10:05London Heathrow

15h 17m

1 stop

HRL19:22Harlingen Valley Intl

£683

Iberia

1 May

HRL19:53Harlingen Valley Intl

12h 32m

1 stop

LHR14:25London Heathrow

7 May

LHR06:15London Heathrow

19h 07m

2 stops

HRL19:22Harlingen Valley Intl

£694

Air Canada flights from Harlingen, Texas to London Heathrow Airport

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

Air Canada

7 Jul

HRL07:20Harlingen Valley Intl

41h 15m

2 stops

LHR06:35London Heathrow

14 Jul

LHR14:10London Heathrow

37h 44m

2 stops

HRL21:54Harlingen Valley Intl

£768

Air Canada

2 Jun

HRL17:20Harlingen Valley Intl

34h 40m

2 stops

LHR10:00London Heathrow

30 Jul

LHR14:05London Heathrow

59h 44m

2 stops

HRL19:49Harlingen Valley Intl

£1,005

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

17:16-11:35

1 stop12h 19m

London Heathrow

Thu 27/8

07:30-21:44

2 stops20h 14m

£587

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

14:00-11:35

1 stop15h 35m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£588

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

05:15-05:55

2 stops18h 40m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£590

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

07:27-06:45

2 stops17h 18m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£591

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

14:00-11:35

1 stop15h 35m

London Heathrow

Thu 27/8

10:00-19:29

1 stop15h 29m

£601

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 29/4

20:03-14:25

1 stop12h 22m

London Heathrow

Wed 6/5

07:50-22:51

2 stops21h 01m

£620

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

07:27-11:35

1 stop22h 08m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£623

Fastest return journey

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

14:00-07:40

1 stop11h 40m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£625

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

05:15-05:55

2 stops18h 40m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£626

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 23/8

05:15-06:45

2 stops19h 30m

London Heathrow

Thu 27/8

09:30-21:44

2 stops18h 14m

£628

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen, Texas to London Heathrow Airport

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 Harlingen Valley Intl to London Heathrow?

Air Canada, United Airlines, and KLM are the most popular carriers operating from Harlingen Valley Intl to London Heathrow

When to book flights from Harlingen, Texas to London Heathrow Airport

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

Estimated return price

Cheap Harlingen, Texas 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, Texas to London Heathrow Airport

Fastest flight time	18h 08m
Direct flights	None

The fastest flight from Harlingen, Texas to London Heathrow Airport takes 18h 08m

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

Search flight deals

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 18h 08m.
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.

Eastbourne

Milton Keynes

Luton

Gatwick

Slough

Maidstone

Northampton

Stratford-upon-Avon

Swindon

Southend-on-Sea

Ipswich

Canterbury

Wembley

Ilford

Poole

Chelmsford

Guildford

Hayes

Dover

Folkestone

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.