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Cheap flights from Harlingen, Texas to the United Kingdom from £403

This is the cheapest one-way 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 13/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
17:25 - 10:15
HRL
-
LHR
11h 50m
1 stop
United Airlines Logo
18:00 - 21:56
LHR
-
HRL
32h 56m
2 stops
£468United Airlines
Tue, 10 Mar - Mon, 16 Mar
Air Canada Logo
09:20 - 06:30
HRL
-
LHR
16h 10m
2 stops
Air Canada Logo
18:00 - 21:56
LHR
-
HRL
32h 56m
2 stops
£475Air Canada
Tue, 10 Mar - Mon, 16 Mar
American Airlines Logo
14:36 - 08:15
HRL
-
LHR
12h 39m
1 stop
American Airlines Logo
16:10 - 10:12
LHR
-
HRL
23h 02m
1 stop
£480American Airlines
Tue, 10 Mar - Mon, 16 Mar
American Airlines Logo
14:36 - 08:15
HRL
-
LHR
12h 39m
1 stop
American Airlines Logo
16:10 - 10:12
LHR
-
HRL
23h 02m
1 stop
£481American Airlines
Tue, 10 Mar - Mon, 16 Mar
United Airlines Logo
17:25 - 10:15
HRL
-
LHR
11h 50m
1 stop
United Airlines Logo
08:00 - 21:56
LHR
-
HRL
18h 56m
2 stops
£483United Airlines
Wed, 18 Mar - Tue, 24 Mar
United Airlines Logo
17:25 - 10:15
HRL
-
LHR
11h 50m
1 stop
United Airlines Logo
10:30 - 19:56
LHR
-
HRL
38h 26m
2 stops
£484United Airlines
Tue, 10 Mar - Mon, 16 Mar
United Airlines Logo
09:20 - 07:55
HRL
-
LHR
17h 35m
2 stops
United Airlines Logo
07:25 - 21:56
LHR
-
HRL
19h 31m
2 stops
£485United Airlines
Wed, 18 Mar - Tue, 24 Mar
United Airlines Logo
09:20 - 07:40
HRL
-
LHR
16h 20m
1 stop
United Airlines Logo
09:30 - 21:59
LHR
-
HRL
18h 29m
2 stops
£515United Airlines
Fri, 1 May - Thu, 7 May
United Airlines Logo
12:10 - 07:40
HRL
-
LHR
13h 30m
1 stop
United Airlines Logo
09:30 - 11:23
LHR
-
HRL
31h 53m
2 stops
£517United Airlines
Fri, 1 May - Thu, 7 May
Air Canada Logo
09:20 - 09:35
HRL
-
LHR
18h 15m
2 stops
Air Canada Logo
17:40 - 11:23
LHR
-
HRL
47h 43m
2 stops
£525Air Canada
Fri, 1 May - Thu, 7 May

Air Canada flights from Harlingen, Texas to United Kingdom

Our best Air Canada deals on Harlingen, Texas to United Kingdom flight tickets
Air Canada
10 Mar
HRL09:20Harlingen Valley Intl
16h 10m
2 stops
LHR06:30London Heathrow
16 Mar
LHR18:00London Heathrow
32h 56m
2 stops
HRL21:56Harlingen Valley Intl
£475
Air Canada
1 May
HRL09:20Harlingen Valley Intl
18h 15m
2 stops
LHR09:35London Heathrow
7 May
LHR17:40London Heathrow
47h 43m
2 stops
HRL11:23Harlingen Valley Intl
£525
Air Canada
1 May
HRL09:20Harlingen Valley Intl
39h 10m
2 stops
LHR06:30London Heathrow
7 May
LHR17:40London Heathrow
47h 43m
2 stops
HRL11:23Harlingen Valley Intl
£529

United Airlines flights from Harlingen, Texas to United Kingdom

Our best United Airlines deals on Harlingen, Texas to United Kingdom flight tickets
United Airlines
10 Mar
HRL17:25Harlingen Valley Intl
11h 50m
1 stop
LHR10:15London Heathrow
16 Mar
LHR18:00London Heathrow
32h 56m
2 stops
HRL21:56Harlingen Valley Intl
£468
United Airlines
18 Mar
HRL09:20Harlingen Valley Intl
16h 00m
2 stops
LHR06:20London Heathrow
24 Mar
LHR07:25London Heathrow
19h 31m
2 stops
HRL21:56Harlingen Valley Intl
£483
United Airlines
10 Mar
HRL17:25Harlingen Valley Intl
11h 50m
1 stop
LHR10:15London Heathrow
16 Mar
LHR10:30London Heathrow
38h 26m
2 stops
HRL19:56Harlingen Valley Intl
£484

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 28 January 2026.
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

Tue 10/3

17:25-10:15

1 stop11h 50m

London Heathrow

Mon 16/3

18:00-21:56

2 stops32h 56m

£468

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

09:20-06:30

2 stops16h 10m

London Heathrow

Mon 16/3

18:00-21:56

2 stops32h 56m

£475

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

14:36-08:15

1 stop12h 39m

London Heathrow

Mon 16/3

16:10-10:12

1 stop23h 02m

£480

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

14:36-08:15

1 stop12h 39m

London Heathrow

Mon 16/3

16:10-10:12

1 stop23h 02m

£481

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

17:25-10:15

1 stop11h 50m

London Heathrow

Tue 24/3

08:00-21:56

2 stops18h 56m

£483

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

17:25-10:15

1 stop11h 50m

London Heathrow

Mon 16/3

10:30-19:56

2 stops38h 26m

£484

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

09:20-07:55

2 stops17h 35m

London Heathrow

Tue 24/3

07:25-21:56

2 stops19h 31m

£485

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 1/5

09:20-07:40

1 stop16h 20m

London Heathrow

Thu 7/5

09:30-21:59

2 stops18h 29m

£515

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 1/5

12:10-07:40

1 stop13h 30m

London Heathrow

Thu 7/5

09:30-11:23

2 stops31h 53m

£517

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 1/5

09:20-09:35

2 stops18h 15m

London Heathrow

Thu 7/5

17:40-11:23

2 stops47h 43m

£525

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 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?

United Airlines 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

Fastest flight time

11h 50m

Direct flights

None
The fastest flight from Harlingen, Texas to United Kingdom takes 11h 50m
There are no direct flights from Harlingen, Texas to United Kingdom. There are no popular flight routes from Harlingen, Texas to United Kingdom.
Search flight deals

  • 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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