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Cheap flights from Harlingen, Texas to London from £469

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to London departing on 15/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Harlingen, Texas to London

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
15:39 - 20:10HRL-LHR
22h 31m2 stops
Delta Logo
16:35 - 14:39LHR-HRL
28h 04m2 stops
£469Delta
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to., 15 jan. - on., 21 jan.
Delta Logo
16:07 - 06:20HRL-LHR
33h 13m2 stops
Delta Logo
15:50 - 15:12LHR-HRL
28h 22m2 stops
£498Delta
Find Deal
ti., 10 mar. - ma., 16 mar.
Delta Logo
16:07 - 07:05HRL-LHR
33h 58m1 stop
Delta Logo
16:10 - 15:12LHR-HRL
28h 02m2 stops
£502Delta
Find Deal
on., 18 mar. - ti., 24 mar.
Delta Logo
16:07 - 07:05HRL-LHR
33h 58m1 stop
Delta Logo
11:05 - 15:12LHR-HRL
33h 07m1 stop
£503Delta
Find Deal
on., 18 mar. - ti., 24 mar.
Iberia Logo
15:22 - 11:40HRL-LHR
14h 18m1 stop
Iberia Logo
18:45 - 14:46LHR-HRL
26h 01m2 stops
£503Iberia
Find Deal
on., 14 jan. - on., 21 jan.
United Airlines Logo
09:20 - 07:10HRL-LHR
15h 50m2 stops
United Airlines Logo
08:30 - 21:59LHR-HRL
19h 29m2 stops
£510United Airlines
Find Deal
on., 14 jan. - on., 21 jan.
Multiple Airlines Logo
11:06 - 12:15HRL-LHR
19h 09m1 stop
Multiple Airlines Logo
15:00 - 23:21LHR-HRL
14h 21m1 stop
£525Multiple Airlines
Find Deal
on., 14 jan. - on., 21 jan.
United Airlines Logo
17:25 - 10:15HRL-LHR
11h 50m1 stop
United Airlines Logo
11:30 - 21:56LHR-HRL
39h 26m2 stops
£526United Airlines
Find Deal
ti., 10 mar. - ma., 16 mar.
American Airlines Logo
14:45 - 08:15HRL-LHR
12h 30m1 stop
American Airlines Logo
08:20 - 19:36LHR-HRL
16h 16m1 stop
£540American Airlines
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ti., 10 mar. - ma., 16 mar.
United Airlines Logo
07:00 - 10:15HRL-LHR
21h 15m1 stop
United Airlines Logo
09:30 - 21:59LHR-HRL
18h 29m2 stops
£548United Airlines
Find Deal
fr., 16 jan. - ti., 20 jan.

Iberia flights from Harlingen, Texas to London Heathrow Airport

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

Our best United Airlines deals on Harlingen, Texas to London Heathrow Airport 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

momondo Fare Finder

 
Customise your flight search to find flights from Harlingen, Texas to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 Desember 2025.
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

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

to. 15/1

15:39-20:10

2 stops22h 31m

London Heathrow

on. 21/1

16:35-14:39

2 stops28h 04m

£469

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

ti. 10/3

16:07-06:20

2 stops33h 13m

London Heathrow

ma. 16/3

15:50-15:12

2 stops28h 22m

£498

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

on. 18/3

16:07-07:05

1 stop33h 58m

London Heathrow

ti. 24/3

16:10-15:12

2 stops28h 02m

£502

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

on. 18/3

16:07-07:05

1 stop33h 58m

London Heathrow

ti. 24/3

11:05-15:12

1 stop33h 07m

£503

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

on. 14/1

15:22-11:40

1 stop14h 18m

London Heathrow

on. 21/1

18:45-14:46

2 stops26h 01m

£503

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

on. 14/1

09:20-07:10

2 stops15h 50m

London Heathrow

on. 21/1

08:30-21:59

2 stops19h 29m

£510

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

on. 14/1

11:06-12:15

1 stop19h 09m

London Heathrow

on. 21/1

15:00-23:21

1 stop14h 21m

£525

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

ti. 10/3

17:25-10:15

1 stop11h 50m

London Heathrow

ma. 16/3

11:30-21:56

2 stops39h 26m

£526

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

ti. 10/3

14:45-08:15

1 stop12h 30m

London Heathrow

ma. 16/3

08:20-19:36

1 stop16h 16m

£540

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

fr. 16/1

07:00-10:15

1 stop21h 15m

London Heathrow

ti. 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 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

12h 31m

Direct flights

None
The fastest flight from Harlingen, Texas to London Heathrow Airport takes 12h 31m
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.
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  • 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 11h 47m.

  • 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.

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

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

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