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Cheap flights from Harlingen, Texas to the United Kingdom from $634

This is the cheapest round-trip 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 8/31. 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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Find the cheapest flights from Harlingen, Texas to the United Kingdom

Cheap round-trip flights

United Airlines Logo
5:20 pm - 7:40 amHRL-LHR
32h 20m1 stop
United Airlines Logo
12:05 pm - 4:13 pmLHR-HRL
34h 08m2 stops
$634United Airlines
Find Deal
Sun, Aug 31 - Wed, Oct 1
United Airlines Logo
7:00 am - 12:20 pmHRL-MAN
23h 20m2 stops
United Airlines Logo
6:00 am - 9:54 pmMAN-HRL
21h 54m2 stops
$718United Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
Iberia Logo
6:37 pm - 8:15 amHRL-LHR
32h 38m1 stop
Iberia Logo
6:45 pm - 9:43 amLHR-HRL
20h 58m2 stops
$736Iberia
Find Deal
Sat, Nov 1 - Wed, Nov 12
United Airlines Logo
12:10 pm - 7:30 amHRL-LHR
13h 20m1 stop
United Airlines Logo
9:30 am - 9:54 pmLHR-HRL
18h 24m2 stops
$739United Airlines
Find Deal
Wed, Nov 5 - Tue, Nov 18
United Airlines Logo
12:10 pm - 10:50 amHRL-LHR
16h 40m2 stops
United Airlines Logo
8:30 am - 9:54 pmLHR-HRL
19h 24m2 stops
$744United Airlines
Find Deal
Wed, Nov 5 - Tue, Nov 18
Air Canada Logo
7:00 am - 11:20 amHRL-LHR
47h 20m2 stops
Air Canada Logo
1:25 pm - 7:39 pmLHR-HRL
36h 14m2 stops
$749Air Canada
Find Deal
Sat, Nov 1 - Wed, Nov 12
Iberia Logo
6:37 pm - 10:00 amHRL-LHR
34h 23m1 stop
Iberia Logo
2:55 pm - 11:14 pmLHR-HRL
14h 19m1 stop
$757Iberia
Find Deal
Sat, Nov 1 - Wed, Nov 12
Air Canada Logo
2:05 pm - 6:30 amHRL-LHR
34h 25m2 stops
Air Canada Logo
12:05 pm - 4:13 pmLHR-HRL
34h 08m2 stops
$921Air Canada
Find Deal
Sat, Aug 30 - Wed, Oct 1
Logo
2:50 pm - 9:00 amHRL-LHR
12h 10m1 stop
Logo
6:40 am - 6:05 pmLHR-HRL
17h 25m2 stops
$1,088
Find Deal
Thu, Oct 9 - Wed, Oct 15
Logo
6:20 pm - 5:15 pmHRL-LHR
16h 55m2 stops
Logo
6:40 am - 6:05 pmLHR-HRL
17h 25m2 stops
$1,382
Find Deal
Thu, Oct 9 - Wed, Oct 15

United Airlines flights from Harlingen, Texas to United Kingdom

Our best United Airlines deals on Harlingen, Texas to United Kingdom flight tickets
United Airlines
Aug 31
HRL5:20 pmHarlingen Valley Intl
32h 20m
1 stop
LHR7:40 amLondon Heathrow
Oct 1
LHR12:05 pmLondon Heathrow
34h 08m
2 stops
HRL4:13 pmHarlingen Valley Intl
$634
Find similar
United Airlines
Nov 12
HRL7:00 amHarlingen Valley Intl
23h 20m
2 stops
MAN12:20 pmManchester
Nov 16
MAN6:00 amManchester
21h 54m
2 stops
HRL9:54 pmHarlingen Valley Intl
$718
Find similar
United Airlines
Nov 5
HRL12:10 pmHarlingen Valley Intl
13h 20m
1 stop
LHR7:30 amLondon Heathrow
Nov 18
LHR9:30 amLondon Heathrow
18h 24m
2 stops
HRL9:54 pmHarlingen Valley Intl
$739
Find similar

Iberia flights from Harlingen, Texas to United Kingdom

Our best Iberia deals on Harlingen, Texas to United Kingdom flight tickets
Iberia
Nov 1
HRL6:37 pmHarlingen Valley Intl
32h 38m
1 stop
LHR8:15 amLondon Heathrow
Nov 12
LHR6:45 pmLondon Heathrow
20h 58m
2 stops
HRL9:43 amHarlingen Valley Intl
$736
Find similar
Iberia
Nov 1
HRL6:37 pmHarlingen Valley Intl
34h 23m
1 stop
LHR10:00 amLondon Heathrow
Nov 12
LHR2:55 pmLondon Heathrow
14h 19m
1 stop
HRL11:14 pmHarlingen Valley Intl
$757
Find similar
Iberia
Aug 30
HRL6:30 pmHarlingen Valley Intl
29h 55m
1 stop
LHR6:25 amLondon Heathrow
Oct 1
LHR10:30 amLondon Heathrow
13h 35m
1 stop
HRL6:05 pmHarlingen Valley Intl
$924
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated August 18, 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 8/31

5:20 pm-7:40 am

1 stop32h 20m

London Heathrow

Wed 10/1

12:05 pm-4:13 pm

2 stops34h 08m

$634

HarlingenManchester

HRL - MAN

HRLMAN

Harlingen Valley Intl

Wed 11/12

7:00 am-12:20 pm

2 stops23h 20m

Manchester

Sun 11/16

6:00 am-9:54 pm

2 stops21h 54m

$718

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 11/1

6:37 pm-8:15 am

1 stop32h 38m

London Heathrow

Wed 11/12

6:45 pm-9:43 am

2 stops20h 58m

$736

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 11/5

12:10 pm-7:30 am

1 stop13h 20m

London Heathrow

Tue 11/18

9:30 am-9:54 pm

2 stops18h 24m

$739

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 11/5

12:10 pm-10:50 am

2 stops16h 40m

London Heathrow

Tue 11/18

8:30 am-9:54 pm

2 stops19h 24m

$744

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 11/1

7:00 am-11:20 am

2 stops47h 20m

London Heathrow

Wed 11/12

1:25 pm-7:39 pm

2 stops36h 14m

$749

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 11/1

6:37 pm-10:00 am

1 stop34h 23m

London Heathrow

Wed 11/12

2:55 pm-11:14 pm

1 stop14h 19m

$757

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 8/30

2:05 pm-6:30 am

2 stops34h 25m

London Heathrow

Wed 10/1

12:05 pm-4:13 pm

2 stops34h 08m

$921

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 10/9

2:50 pm-9:00 am

1 stop12h 10m

London Heathrow

Wed 10/15

6:40 am-6:05 pm

2 stops17h 25m

$1,088

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 10/9

6:20 pm-5:15 pm

2 stops16h 55m

London Heathrow

Wed 10/15

6:40 am-6:05 pm

2 stops17h 25m

$1,382

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to United Kingdom?

The cheapest day to depart from Harlingen, Texas to United Kingdom is on a Saturday when prices can be found for as low as $798. The most expensive day to fly to United Kingdom is Thursday, with ticket prices averaging around $1,560.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is in the afternoon. momondo users have found flights departing from Harlingen, Texas to United Kingdom in the afternoon for as low as $798. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the morning, with an average ticket price of $919. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Best Price Found

$634

Fastest flight time

12h 09m

Direct flights

None

Airports in United Kingdom

2 airports
The best flight deal from Harlingen, Texas to United Kingdom found on momondo in the last 72 hours is $634
The fastest flight from Harlingen, Texas to United Kingdom takes 12h 09m
There are no direct flights from Harlingen, Texas to United Kingdom. Popular non-direct routes for this connection are Harlingen Valley Intl Airport - Manchester Airport and Harlingen Valley Intl Airport - London Heathrow Airport.
There are 2 airports near United Kingdom: London Heathrow (LHR), Manchester (MAN)
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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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harlingen to United Kingdom for you.

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

momondo does allow users to show only those flights to United Kingdom from Harlingen which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Harlingen and United Kingdom by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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