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Cheap flights from Harlingen, Texas to the United Kingdom from $621

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 1/15. 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 round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
3:39 pm - 8:10 pmHRL-LHR
22h 31m2 stops
Delta Logo
11:05 am - 2:39 pmLHR-HRL
33h 34m1 stop
$621Delta
Find Deal
jue., ene. 15 - mié., ene. 21
Delta Logo
4:07 pm - 6:20 amHRL-LHR
33h 13m2 stops
Delta Logo
3:50 pm - 3:12 pmLHR-HRL
28h 22m2 stops
$659Delta
Find Deal
mar., mar. 10 - lun., mar. 16
Delta Logo
4:07 pm - 7:05 amHRL-LHR
33h 58m1 stop
Delta Logo
4:10 pm - 3:12 pmLHR-HRL
28h 02m2 stops
$664Delta
Find Deal
mié., mar. 18 - mar., mar. 24
Delta Logo
4:07 pm - 7:05 amHRL-LHR
33h 58m1 stop
Delta Logo
11:05 am - 3:12 pmLHR-HRL
33h 07m1 stop
$665Delta
Find Deal
mié., mar. 18 - mar., mar. 24
Iberia Logo
3:22 pm - 11:40 amHRL-LHR
14h 18m1 stop
Iberia Logo
6:45 pm - 2:46 pmLHR-HRL
26h 01m2 stops
$666Iberia
Find Deal
mié., ene. 14 - mié., ene. 21
United Airlines Logo
9:20 am - 7:10 amHRL-LHR
15h 50m2 stops
United Airlines Logo
8:30 am - 9:59 pmLHR-HRL
19h 29m2 stops
$675United Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
Multiple Airlines Logo
11:06 am - 12:15 pmHRL-LHR
19h 09m1 stop
Multiple Airlines Logo
3:00 pm - 11:21 pmLHR-HRL
14h 21m1 stop
$694Multiple Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
United Airlines Logo
5:25 pm - 10:15 amHRL-LHR
11h 50m1 stop
United Airlines Logo
11:30 am - 9:56 pmLHR-HRL
39h 26m2 stops
$696United Airlines
Find Deal
mar., mar. 10 - lun., mar. 16
American Airlines Logo
2:45 pm - 8:15 amHRL-LHR
12h 30m1 stop
American Airlines Logo
8:20 am - 7:36 pmLHR-HRL
16h 16m1 stop
$714American Airlines
Find Deal
mar., mar. 10 - lun., mar. 16
United Airlines Logo
7:00 am - 10:15 amHRL-LHR
21h 15m1 stop
United Airlines Logo
9:30 am - 9:59 pmLHR-HRL
18h 29m2 stops
$725United Airlines
Find Deal
vie., ene. 16 - mar., ene. 20

Iberia flights from Harlingen, Texas to United Kingdom

Our best Iberia deals on Harlingen, Texas to United Kingdom flight tickets
Iberia
Jan 14
HRL3:22 pmHarlingen Valley Intl
14h 18m
1 stop
LHR11:40 amLondon Heathrow
Jan 21
LHR6:45 pmLondon Heathrow
26h 01m
2 stops
HRL2:46 pmHarlingen Valley Intl
$666
Find similar
Iberia
Apr 1
HRL8:06 pmHarlingen Valley Intl
12h 19m
1 stop
LHR2:25 pmLondon Heathrow
Apr 10
LHR4:25 pmLondon Heathrow
13h 34m
1 stop
HRL11:59 pmHarlingen Valley Intl
$840
Find similar
Iberia
Dec 4
HRL12:13 pmHarlingen Valley Intl
12h 37m
1 stop
LHR6:50 amLondon Heathrow
Dec 13
LHR4:30 pmLondon Heathrow
23h 08m
1 stop
HRL9:38 amHarlingen Valley Intl
$909
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
Jan 14
HRL9:20 amHarlingen Valley Intl
15h 50m
2 stops
LHR7:10 amLondon Heathrow
Jan 21
LHR8:30 amLondon Heathrow
19h 29m
2 stops
HRL9:59 pmHarlingen Valley Intl
$675
Find similar
United Airlines
Mar 10
HRL5:25 pmHarlingen Valley Intl
11h 50m
1 stop
LHR10:15 amLondon Heathrow
Mar 16
LHR11:30 amLondon Heathrow
39h 26m
2 stops
HRL9:56 pmHarlingen Valley Intl
$696
Find similar
United Airlines
Jan 16
HRL7:00 amHarlingen Valley Intl
21h 15m
1 stop
LHR10:15 amLondon Heathrow
Jan 20
LHR9:30 amLondon Heathrow
18h 29m
2 stops
HRL9:59 pmHarlingen Valley Intl
$725
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 diciembre 2, 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

jue. 1/15

3:39 pm-8:10 pm

2 stops22h 31m

London Heathrow

mié. 1/21

11:05 am-2:39 pm

1 stop33h 34m

$621

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mar. 3/10

4:07 pm-6:20 am

2 stops33h 13m

London Heathrow

lun. 3/16

3:50 pm-3:12 pm

2 stops28h 22m

$659

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mié. 3/18

4:07 pm-7:05 am

1 stop33h 58m

London Heathrow

mar. 3/24

4:10 pm-3:12 pm

2 stops28h 02m

$664

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mié. 3/18

4:07 pm-7:05 am

1 stop33h 58m

London Heathrow

mar. 3/24

11:05 am-3:12 pm

1 stop33h 07m

$665

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mié. 1/14

3:22 pm-11:40 am

1 stop14h 18m

London Heathrow

mié. 1/21

6:45 pm-2:46 pm

2 stops26h 01m

$666

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mié. 1/14

9:20 am-7:10 am

2 stops15h 50m

London Heathrow

mié. 1/21

8:30 am-9:59 pm

2 stops19h 29m

$675

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mié. 1/14

11:06 am-12:15 pm

1 stop19h 09m

London Heathrow

mié. 1/21

3:00 pm-11:21 pm

1 stop14h 21m

$694

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mar. 3/10

5:25 pm-10:15 am

1 stop11h 50m

London Heathrow

lun. 3/16

11:30 am-9:56 pm

2 stops39h 26m

$696

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

mar. 3/10

2:45 pm-8:15 am

1 stop12h 30m

London Heathrow

lun. 3/16

8:20 am-7:36 pm

1 stop16h 16m

$714

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

vie. 1/16

7:00 am-10:15 am

1 stop21h 15m

London Heathrow

mar. 1/20

9:30 am-9:59 pm

2 stops18h 29m

$725

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.

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

Fastest flight time

12h 19m

Direct flights

None
The fastest flight from Harlingen, Texas to United Kingdom takes 12h 19m
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?

    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
9,065 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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