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Cheap flights from Harlingen, Texas to the United Kingdom from £557

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 the United Kingdom departing on 29/3. 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 the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
05:15 - 10:00HRL-LHR
22h 45m2 stops
United Airlines Logo
07:25 - 19:29LHR-HRL
18h 04m2 stops
£557United Airlines
Find Deal
Sun, 29 Mar - Wed, 8 Apr
United Airlines Logo
17:16 - 11:35HRL-LHR
12h 19m1 stop
United Airlines Logo
13:40 - 21:44LHR-HRL
14h 04m1 stop
£581United Airlines
Find Deal
Sun, 29 Mar - Wed, 8 Apr
United Airlines Logo
07:27 - 07:30HRL-LHR
19h 03m1 stop
United Airlines Logo
06:30 - 21:44LHR-HRL
21h 14m2 stops
£592United Airlines
Find Deal
Fri, 27 Mar - Tue, 31 Mar
United Airlines Logo
11:55 - 07:30HRL-LHR
14h 35m1 stop
United Airlines Logo
10:00 - 19:29LHR-HRL
15h 29m1 stop
£606United Airlines
Find Deal
Fri, 27 Mar - Tue, 31 Mar
United Airlines Logo
07:00 - 10:15HRL-LHR
21h 15m1 stop
United Airlines Logo
13:00 - 16:06LHR-HRL
33h 06m2 stops
£622United Airlines
Find Deal
Sun, 4 Jan - Fri, 16 Jan
Multiple Airlines Logo
07:00 - 06:30HRL-LHR
41h 30m2 stops
Multiple Airlines Logo
11:10 - 21:59LHR-HRL
40h 49m2 stops
£632Multiple Airlines
Find Deal
Sun, 4 Jan - Fri, 16 Jan
United Airlines Logo
07:00 - 10:15HRL-LHR
21h 15m1 stop
United Airlines Logo
12:05 - 11:26LHR-HRL
29h 21m1 stop
£635United Airlines
Find Deal
Sun, 4 Jan - Fri, 16 Jan
Air Canada Logo
17:20 - 07:10HRL-LHR
31h 50m2 stops
Air Canada Logo
13:25 - 16:06LHR-HRL
32h 41m2 stops
£816Air Canada
Find Deal
Sat, 3 Jan - Fri, 16 Jan
Iberia Logo
16:12 - 10:00HRL-LHR
12h 48m1 stop
Iberia Logo
19:40 - 09:45LHR-HRL
19h 05m2 stops
£1,728Iberia
Find Deal
Mon, 23 Mar - Fri, 27 Mar
Iberia Logo
14:48 - 08:35HRL-LHR
11h 47m1 stop
Iberia Logo
10:15 - 18:13LHR-HRL
13h 58m1 stop
£5,076Iberia
Find Deal
Sat, 3 Jan - Fri, 16 Jan

Iberia flights from Harlingen, Texas to United Kingdom

Our best Iberia deals on Harlingen, Texas to United Kingdom flight tickets
Iberia
23 Mar
HRL16:12Harlingen Valley Intl
12h 48m
1 stop
LHR10:00London Heathrow
27 Mar
LHR19:40London Heathrow
19h 05m
2 stops
HRL09:45Harlingen Valley Intl
£1,728
Find similar
Iberia
3 Jan
HRL14:48Harlingen Valley Intl
11h 47m
1 stop
LHR08:35London Heathrow
16 Jan
LHR10:15London Heathrow
13h 58m
1 stop
HRL18:13Harlingen Valley Intl
£5,076
Find similar

United Airlines flights from Harlingen, Texas to United Kingdom

Our best United Airlines deals on Harlingen, Texas to United Kingdom flight tickets
United Airlines
29 Mar
HRL05:15Harlingen Valley Intl
22h 45m
2 stops
LHR10:00London Heathrow
8 Apr
LHR07:25London Heathrow
18h 04m
2 stops
HRL19:29Harlingen Valley Intl
£557
Find similar
United Airlines
29 Mar
HRL17:16Harlingen Valley Intl
12h 19m
1 stop
LHR11:35London Heathrow
8 Apr
LHR13:40London Heathrow
14h 04m
1 stop
HRL21:44Harlingen Valley Intl
£581
Find similar
United Airlines
27 Mar
HRL07:27Harlingen Valley Intl
19h 03m
1 stop
LHR07:30London Heathrow
31 Mar
LHR06:30London Heathrow
21h 14m
2 stops
HRL21:44Harlingen Valley Intl
£592
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Harlingen, Texas to United Kingdom 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 15 October 2025.
Use the filters below to find and compare flights from Harlingen, Texas to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 29/3

05:15-10:00

2 stops22h 45m

London Heathrow

Wed 8/4

07:25-19:29

2 stops18h 04m

£557

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 29/3

17:16-11:35

1 stop12h 19m

London Heathrow

Wed 8/4

13:40-21:44

1 stop14h 04m

£581

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 27/3

07:27-07:30

1 stop19h 03m

London Heathrow

Tue 31/3

06:30-21:44

2 stops21h 14m

£592

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 27/3

11:55-07:30

1 stop14h 35m

London Heathrow

Tue 31/3

10:00-19:29

1 stop15h 29m

£606

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 4/1

07:00-10:15

1 stop21h 15m

London Heathrow

Fri 16/1

13:00-16:06

2 stops33h 06m

£622

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 4/1

07:00-06:30

2 stops41h 30m

London Heathrow

Fri 16/1

11:10-21:59

2 stops40h 49m

£632

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 4/1

07:00-10:15

1 stop21h 15m

London Heathrow

Fri 16/1

12:05-11:26

1 stop29h 21m

£635

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 3/1

17:20-07:10

2 stops31h 50m

London Heathrow

Fri 16/1

13:25-16:06

2 stops32h 41m

£816

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 23/3

16:12-10:00

1 stop12h 48m

London Heathrow

Fri 27/3

19:40-09:45

2 stops19h 05m

£1,728

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 3/1

14:48-08:35

1 stop11h 47m

London Heathrow

Fri 16/1

10:15-18:13

1 stop13h 58m

£5,076

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Harlingen, Texas to United Kingdom

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 United Kingdom?

Iberia is the most popular carrier operating from Harlingen Valley Intl to United Kingdom

Cheap Harlingen, Texas to United Kingdom flight deals and tips

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

Direct flights

None
There are no direct flights from Harlingen, Texas to United Kingdom. There are no popular flight routes from Harlingen, Texas to United Kingdom.
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  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to United Kingdom?

    Prices for flights from Harlingen Valley Intl Airport to United Kingdom are updated daily.

  • How old do you have to be to fly from Harlingen Valley Intl Airport to United Kingdom?

    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 United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

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

Why use momondo?

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

It is quick and easy to find Harlingen to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

Yes. All flights to United Kingdom from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Harlingen to United Kingdom?

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 United Kingdom.

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

Yes. momondo can track prices for Harlingen to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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