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Cheap flights from Harlingen, Texas to the United Kingdom from $742

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 3/29. 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

Enter your travel dates to find the best prices.
United Airlines Logo
2:00 pm - 11:35 amHRL-LHR
15h 35m1 stop
United Airlines Logo
7:25 am - 7:29 pmLHR-HRL
18h 04m2 stops
$742United Airlines
Find Deal
Sun, Mar 29 - Wed, Apr 8
United Airlines Logo
5:16 pm - 11:35 amHRL-LHR
12h 19m1 stop
United Airlines Logo
1:40 pm - 9:44 pmLHR-HRL
14h 04m1 stop
$773United Airlines
Find Deal
Sun, Mar 29 - Wed, Apr 8
United Airlines Logo
7:27 am - 7:30 amHRL-LHR
19h 03m1 stop
United Airlines Logo
6:30 am - 9:44 pmLHR-HRL
21h 14m2 stops
$788United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Air Canada Logo
9:20 am - 6:30 amHRL-LHR
15h 10m2 stops
Air Canada Logo
11:10 am - 10:59 amLHR-HRL
28h 49m2 stops
$797Air Canada
Find Deal
Mon, Mar 2 - Mon, Mar 9
American Airlines Logo
6:20 pm - 6:05 pmHRL-MAN
18h 45m2 stops
American Airlines Logo
8:55 am - 7:30 pmMAN-HRL
16h 35m2 stops
$821American Airlines
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Sun, Oct 26 - Sun, Nov 2
Multiple Airlines Logo
7:00 am - 6:30 amHRL-LHR
41h 30m2 stops
Multiple Airlines Logo
11:10 am - 9:59 pmLHR-HRL
40h 49m2 stops
$841Multiple Airlines
Find Deal
Sun, Jan 4 - Fri, Jan 16
Multiple Airlines Logo
12:10 pm - 10:20 amHRL-MAN
17h 10m3 stops
Multiple Airlines Logo
5:00 am - 9:54 pmMAN-HRL
21h 54m2 stops
$891Multiple Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2
Iberia Logo
12:11 pm - 6:50 amHRL-LHR
12h 39m1 stop
Iberia Logo
7:40 pm - 9:45 amLHR-HRL
19h 05m2 stops
$992Iberia
Find Deal
Mon, Mar 2 - Mon, Mar 9
Air Canada Logo
5:20 pm - 7:10 amHRL-LHR
31h 50m2 stops
Air Canada Logo
1:25 pm - 4:06 pmLHR-HRL
32h 41m2 stops
$1,086Air Canada
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Sat, Jan 3 - Fri, Jan 16
Iberia Logo
4:12 pm - 10:00 amHRL-LHR
12h 48m1 stop
Iberia Logo
7:40 pm - 9:45 amLHR-HRL
19h 05m2 stops
$2,300Iberia
Find Deal
Mon, Mar 23 - Fri, Mar 27

Iberia flights from Harlingen, Texas to United Kingdom

Our best Iberia deals on Harlingen, Texas to United Kingdom flight tickets
Iberia
Mar 2
HRL12:11 pmHarlingen Valley Intl
12h 39m
1 stop
LHR6:50 amLondon Heathrow
Mar 9
LHR7:40 pmLondon Heathrow
19h 05m
2 stops
HRL9:45 amHarlingen Valley Intl
$992
Find similar
Iberia
Mar 23
HRL4:12 pmHarlingen Valley Intl
12h 48m
1 stop
LHR10:00 amLondon Heathrow
Mar 27
LHR7:40 pmLondon Heathrow
19h 05m
2 stops
HRL9:45 amHarlingen Valley Intl
$2,300
Find similar
Iberia
Jan 3
HRL2:48 pmHarlingen Valley Intl
11h 47m
1 stop
LHR8:35 amLondon Heathrow
Jan 16
LHR10:15 amLondon Heathrow
13h 58m
1 stop
HRL6:13 pmHarlingen Valley Intl
$6,756
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
Mar 29
HRL2:00 pmHarlingen Valley Intl
15h 35m
1 stop
LHR11:35 amLondon Heathrow
Apr 8
LHR7:25 amLondon Heathrow
18h 04m
2 stops
HRL7:29 pmHarlingen Valley Intl
$742
Find similar
United Airlines
Mar 29
HRL5:16 pmHarlingen Valley Intl
12h 19m
1 stop
LHR11:35 amLondon Heathrow
Apr 8
LHR1:40 pmLondon Heathrow
14h 04m
1 stop
HRL9:44 pmHarlingen Valley Intl
$773
Find similar
United Airlines
Mar 27
HRL7:27 amHarlingen Valley Intl
19h 03m
1 stop
LHR7:30 amLondon Heathrow
Mar 31
LHR6:30 amLondon Heathrow
21h 14m
2 stops
HRL9:44 pmHarlingen Valley Intl
$788
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 October 14, 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 3/29

2:00 pm-11:35 am

1 stop15h 35m

London Heathrow

Wed 4/8

7:25 am-7:29 pm

2 stops18h 04m

$742

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 3/29

5:16 pm-11:35 am

1 stop12h 19m

London Heathrow

Wed 4/8

1:40 pm-9:44 pm

1 stop14h 04m

$773

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 3/27

7:27 am-7:30 am

1 stop19h 03m

London Heathrow

Tue 3/31

6:30 am-9:44 pm

2 stops21h 14m

$788

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 3/2

9:20 am-6:30 am

2 stops15h 10m

London Heathrow

Mon 3/9

11:10 am-10:59 am

2 stops28h 49m

$797

HarlingenManchester

HRL - MAN

HRLMAN

Harlingen Valley Intl

Sun 10/26

6:20 pm-6:05 pm

2 stops18h 45m

Manchester

Sun 11/2

8:55 am-7:30 pm

2 stops16h 35m

$821

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 1/4

7:00 am-6:30 am

2 stops41h 30m

London Heathrow

Fri 1/16

11:10 am-9:59 pm

2 stops40h 49m

$841

HarlingenManchester

HRL - MAN

HRLMAN

Harlingen Valley Intl

Sun 10/26

12:10 pm-10:20 am

3 stops17h 10m

Manchester

Sun 11/2

5:00 am-9:54 pm

2 stops21h 54m

$891

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 3/2

12:11 pm-6:50 am

1 stop12h 39m

London Heathrow

Mon 3/9

7:40 pm-9:45 am

2 stops19h 05m

$992

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 1/3

5:20 pm-7:10 am

2 stops31h 50m

London Heathrow

Fri 1/16

1:25 pm-4:06 pm

2 stops32h 41m

$1,086

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 3/23

4:12 pm-10:00 am

1 stop12h 48m

London Heathrow

Fri 3/27

7:40 pm-9:45 am

2 stops19h 05m

$2,300

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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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.

Can stopping save me money on Harlingen, Texas to United Kingdom flights?

You could potentially save up to 2% on your flight if you consider stops on a Harlingen, Texas to United Kingdom flight.

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?

    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.

Best airlines flying from Harlingen, Texas to United Kingdom

Compare and see reviews for airlines that fly from Harlingen, Texas to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $1,008Free CancellationRating
7.4
8,976 reviews
Search United Airlines flights

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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Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $315
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Flights to Aberdeenfrom $521
Flights to Leedsfrom $450