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

Confirm your travel details to search for the latest offers for flights from Harlingen, Texas to London . 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, Texas to London 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?

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 Harlingen Valley Intl Airport to London?

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

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

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.

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

The necessary travel and health documents for your London 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.

£469 Cheap Flights from Harlingen to London in 2025/26

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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.

15:39 - 20:10HRL-LHR

22h 31m2 stops

16:35 - 14:39LHR-HRL

28h 04m2 stops

£469Delta

Find Deal

Thu, 15 Jan - Wed, 21 Jan

16:07 - 06:20HRL-LHR

33h 13m2 stops

15:50 - 15:12LHR-HRL

28h 22m2 stops

£498Delta

Find Deal

Tue, 10 Mar - Mon, 16 Mar

16:07 - 07:05HRL-LHR

33h 58m1 stop

16:10 - 15:12LHR-HRL

28h 02m2 stops

£502Delta

Find Deal

Wed, 18 Mar - Tue, 24 Mar

16:07 - 07:05HRL-LHR

33h 58m1 stop

11:05 - 15:12LHR-HRL

33h 07m1 stop

£503Delta

Find Deal

Wed, 18 Mar - Tue, 24 Mar

15:22 - 11:40HRL-LHR

14h 18m1 stop

18:45 - 14:46LHR-HRL

26h 01m2 stops

£503Iberia

Find Deal

Wed, 14 Jan - Wed, 21 Jan

09:20 - 07:10HRL-LHR

15h 50m2 stops

08:30 - 21:59LHR-HRL

19h 29m2 stops

£510United Airlines

Find Deal

Wed, 14 Jan - Wed, 21 Jan

11:06 - 12:15HRL-LHR

19h 09m1 stop

15:00 - 23:21LHR-HRL

14h 21m1 stop

£525Multiple Airlines

Find Deal

Wed, 14 Jan - Wed, 21 Jan

17:25 - 10:15HRL-LHR

11h 50m1 stop

11:30 - 21:56LHR-HRL

39h 26m2 stops

£526United Airlines

Find Deal

Tue, 10 Mar - Mon, 16 Mar

14:45 - 08:15HRL-LHR

12h 30m1 stop

08:20 - 19:36LHR-HRL

16h 16m1 stop

£540American Airlines

Find Deal

Tue, 10 Mar - Mon, 16 Mar

07:00 - 10:15HRL-LHR

21h 15m1 stop

09:30 - 21:59LHR-HRL

18h 29m2 stops

£548United Airlines

Find Deal

Fri, 16 Jan - Tue, 20 Jan

Iberia flights from Harlingen, Texas to London

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

Iberia

14 Jan

HRL15:22Harlingen Valley Intl

14h 18m

1 stop

LHR11:40London Heathrow

21 Jan

LHR18:45London Heathrow

26h 01m

2 stops

HRL14:46Harlingen Valley Intl

£503

Find similar

Iberia

1 Apr

HRL20:06Harlingen Valley Intl

12h 19m

1 stop

LHR14:25London Heathrow

10 Apr

LHR16:25London Heathrow

13h 34m

1 stop

HRL23:59Harlingen Valley Intl

£635

Find similar

Iberia

4 Dec

HRL12:13Harlingen Valley Intl

12h 37m

1 stop

LHR06:50London Heathrow

13 Dec

LHR16:30London Heathrow

23h 08m

1 stop

HRL09:38Harlingen Valley Intl

£687

Find similar

United Airlines flights from Harlingen, Texas to London

Our best United Airlines deals on Harlingen, Texas to London flight tickets

United Airlines

14 Jan

HRL09:20Harlingen Valley Intl

15h 50m

2 stops

LHR07:10London Heathrow

21 Jan

LHR08:30London Heathrow

19h 29m

2 stops

HRL21:59Harlingen Valley Intl

£510

Find similar

United Airlines

10 Mar

HRL17:25Harlingen Valley Intl

11h 50m

1 stop

LHR10:15London Heathrow

16 Mar

LHR11:30London Heathrow

39h 26m

2 stops

HRL21:56Harlingen Valley Intl

£526

Find similar

United Airlines

16 Jan

HRL07:00Harlingen Valley Intl

21h 15m

1 stop

LHR10:15London Heathrow

20 Jan

LHR09:30London Heathrow

18h 29m

2 stops

HRL21:59Harlingen Valley Intl

£548

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 15/1

15:39-20:10

2 stops22h 31m

London Heathrow

Wed 21/1

16:35-14:39

2 stops28h 04m

£469

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

16:07-06:20

2 stops33h 13m

London Heathrow

Mon 16/3

15:50-15:12

2 stops28h 22m

£498

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

16:07-07:05

1 stop33h 58m

London Heathrow

Tue 24/3

16:10-15:12

2 stops28h 02m

£502

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

16:07-07:05

1 stop33h 58m

London Heathrow

Tue 24/3

11:05-15:12

1 stop33h 07m

£503

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 14/1

15:22-11:40

1 stop14h 18m

London Heathrow

Wed 21/1

18:45-14:46

2 stops26h 01m

£503

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 14/1

09:20-07:10

2 stops15h 50m

London Heathrow

Wed 21/1

08:30-21:59

2 stops19h 29m

£510

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 14/1

11:06-12:15

1 stop19h 09m

London Heathrow

Wed 21/1

15:00-23:21

1 stop14h 21m

£525

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

17:25-10:15

1 stop11h 50m

London Heathrow

Mon 16/3

11:30-21:56

2 stops39h 26m

£526

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

14:45-08:15

1 stop12h 30m

London Heathrow

Mon 16/3

08:20-19:36

1 stop16h 16m

£540

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 16/1

07:00-10:15

1 stop21h 15m

London Heathrow

Tue 20/1

09:30-21:59

2 stops18h 29m

£548

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Harlingen, Texas to London

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

Estimated return price

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

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

Fastest flight time	12h 31m
Direct flights	None

The fastest flight from Harlingen, Texas to London takes 12h 31m

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

Search flight deals

How far is Harlingen Valley Intl to London by plane?
There are 5125.1 mi between Harlingen Valley Intl and London. By plane, this route typically takes 11h 47m.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to London?
Prices for flights from Harlingen Valley Intl Airport to London were last updated today.
How old do you have to be to fly from Harlingen Valley Intl Airport to London?
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.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London 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.

How do I get Price Alerts for flights from Harlingen, Texas to London?
Confirm your travel details to search for the latest offers for flights from Harlingen, Texas to London. 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, Texas to London 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?
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.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Hayes

Dover

Chelmsford

Colchester

Worthing

Bedford

Ramsgate

Hounslow

Stansted

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 enables you to select and highlight flights to London from Harlingen with this policy.

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

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

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

If you are not ready to book a flight from Harlingen to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.