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$713+ Cheap flights from Harlingen, TX (HRL) to Heathrow (LHR)

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Harlingen to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$713
(American Airlines)
From Harlingen Valley Intl to London Heathrow
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Find flight deals from Harlingen to Heathrow

Cheapest flights from Harlingen to Heathrow
Explore the most affordable flight options available from Harlingen to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/252:50 pmHRL - LHR
1 stop14h 10mAmerican Airlines
Sat 11/110:05 amLHR - HRL
1 stop17h 59mAmerican Airlines
Deal found 9/10$713
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:00 amHRL - LHR
2 stops21h 10mUnited Airlines
Sat 11/12:30 pmLHR - HRL
2 stops37h 24mUnited Airlines
Deal found 9/10$754
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1111:55 amHRL - LHR
2 stops17h 30mUnited Airlines
Mon 9/299:30 amLHR - HRL
2 stops19h 48mUnited Airlines
Deal found 9/10$1,007
This Iberia deal was found by Cheapflights users on 9/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:19 pmHRL - LHR
1 stop32h 41mIberia
Mon 9/294:25 pmLHR - HRL
1 stop23h 16mIberia
Deal found 9/11$1,347
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Sat 10/256:37 pmHRL - LHR
1 stop12h 03mIberia
Mon 10/277:40 pmLHR - HRL
2 stops18h 58mIberia
Deal found 9/10$3,503
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Sat 10/252:50 pmHRL - LHR
2 stops14h 20mMultiple Airlines
Mon 10/277:40 pmLHR - HRL
2 stops18h 58mMultiple Airlines
Deal found 9/10$3,507
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Fri 12/192:48 pmHRL - LHR
1 stop11h 27mIberia
Sat 1/33:00 pmLHR - HRL
1 stop13h 48mIberia
Deal found 9/10$3,822

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Heathrow 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 September 11, 2025.
Use the filters below to find and compare flights from Harlingen to London Heathrow Airport that are best for you.

Fly from

Harlingen

Fly to

Heathrow

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/25

2:50 pm-11:00 am

1 stop14h 10m

London Heathrow

Sat 11/1

11:45 am-11:04 pm

2 stops16h 19m

$717

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/25

7:00 am-10:10 am

2 stops21h 10m

London Heathrow

Sat 11/1

2:30 pm-10:54 pm

2 stops37h 24m

$754

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/25

6:37 pm-12:40 pm

1 stop12h 03m

London Heathrow

Mon 10/27

7:40 pm-9:38 am

2 stops18h 58m

$3,503

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/25

2:50 pm-11:10 am

2 stops14h 20m

London Heathrow

Mon 10/27

7:40 pm-9:38 am

2 stops18h 58m

$3,507

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Harlingen to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 London Heathrow Airport

What is the cheapest month to book a flight from Harlingen, Texas to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Harlingen, Texas to London Heathrow Airport (average of $661). Flying from Harlingen, Texas to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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 LHR?

Find hourly flight availability from Harlingen to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Harlingen, Texas to London Heathrow Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Heathrow. 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 London Heathrow?

    For a flight from Harlingen to London Heathrow, you will be flying from Valley Intl. Harlingen Valley Intl (HRL) is just 3.7 mi from the center of the city. Valley Intl is the only Harlingen airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Harlingen Valley Intl on a regular basis.

  • How long is the flight from Harlingen, Texas to London Heathrow Airport?

    American Airlines, United Airlines, and Iberia can get you from Harlingen, Texas to London Heathrow Airport in just under 12h 03m. Your travel time can differ by up to 9h 07m. There are 5109 mi between Harlingen, Texas and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Harlingen to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Heathrow 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 London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Harlingen, Texas to London Heathrow Airport (average of $661). Flying from Harlingen, Texas to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone

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