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$634+ Cheap flights from Harlingen, TX (HRL) to the United Kingdom

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Harlingen to United Kingdom

Cheapest flights from Harlingen to United Kingdom
Explore the most affordable flight options available from Harlingen to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:48 pmHRL - LHR
1 stop11h 47mIberia
Wed 1/710:05 amLHR - HRL
1 stop14h 09mIberia
Deal found 12/16$1,823
This Cheapflightsfares deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:48 pmHRL - LHR
1 stop11h 47mIberia
Tue 12/233:00 pmLHR - HRL
1 stop13h 48mIberia
Deal found 12/17$2,533

Find flight deals from Harlingen to United Kingdom

Keep the following information in mind while searching for Harlingen to United Kingdom flight deals. Data was last updated December 18, 2025.

Round-trip from

$634
(United Airlines)
From Harlingen Valley Intl to United Kingdom
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Harlingen to the United Kingdom that are best for you.

Fly from

Harlingen

Fly to

United Kingdom

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 1/31

9:20 am-10:15 am

1 stop18h 55m

London Heathrow

Sat 2/7

2:30 pm-8:01 pm

2 stops35h 31m

$634

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 3/18

9:20 am-7:30 am

1 stop17h 10m

London Heathrow

Tue 3/24

9:30 am-11:16 am

2 stops30h 46m

$640

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 3/10

5:25 pm-10:15 am

1 stop11h 50m

London Heathrow

Mon 3/16

1:00 pm-7:56 pm

2 stops35h 56m

$640

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 1/23

9:20 am-10:15 am

1 stop18h 55m

London Heathrow

Tue 1/27

8:30 am-9:59 pm

2 stops19h 29m

$640

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 3/18

5:25 pm-6:30 am

2 stops32h 05m

London Heathrow

Tue 3/24

1:00 pm-4:04 pm

2 stops32h 04m

$652

HarlingenManchester

HRL - MAN

HRLMAN

Harlingen Valley Intl

Wed 2/11

9:20 am-8:45 am

2 stops41h 25m

Manchester

Sun 2/15

6:00 am-9:59 pm

2 stops21h 59m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Best time to book a flight from Harlingen to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Harlingen with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Harlingen to the United Kingdom

What is the cheapest month to book a flight from Harlingen, Texas to United Kingdom?

Currently, November is the cheapest month in which you can book a flight from Harlingen, Texas to United Kingdom (average of $595). Flying from Harlingen, Texas to United Kingdom in December is currently the most expensive (average of $1,610). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HRL to GB?

Find hourly flight availability from Harlingen to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Harlingen, Texas to United Kingdom in the morning. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to United Kingdom. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Harlingen to the United Kingdom by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
American Airlines
7.2
Good
11,054 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

Find useful and relevant information for your journey from Harlingen to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Harlingen to United Kingdom?

    If you book a flight to United Kingdom from Harlingen, you will be flying from Valley Intl, which is the city’s only airport. Harlingen Valley Intl (HRL) is located 3.7 mi from the center of Harlingen.

  • How long is the flight from Harlingen, Texas to United Kingdom?

    Departing from Harlingen, Texas to United Kingdom will take you 18h 55m. There are 5109 mi between Harlingen, Texas and United Kingdom.

  • Can I find deals for flights from Harlingen to United Kingdom that include hotel bookings?

    Yes. In addition to deals on Harlingen to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Harlingen to United Kingdom?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to United Kingdom.

  • Can I find deals for business class flights from Harlingen to United Kingdom?

    Yes. Cheapflights offers flight deals from Harlingen to United Kingdom by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Harlingen, Texas to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Harlingen, Texas to United Kingdom (average of $595). Flying from Harlingen, Texas to United Kingdom in December is currently the most expensive (average of $1,610). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Harlingen to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Harlingen to United Kingdom

Discover the top airline that operate flights from Harlingen to United Kingdom. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,008Average$1,158FlexibilityNo cancel feeOn-time69%

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