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Cheap flights from Harlingen, Texas to London Heathrow Airport from £526

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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 12 September 2025.

Round-trip from

£526
American Airlines
  • American Airlines
  • 25/10-1/11
  • 2 total stops
  • 32h 09m total
  • Harlingen to London
Search Deals

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 12 September 2025.

Sat 25/1014:50HRL - LHR
1 stop14h 10mAmerican Airlines
Sat 1/1110:05LHR - HRL
1 stop17h 59mAmerican Airlines
Deal found 10/9£526
Mon 27/1017:00HRL - LHR
1 stop12h 15mUnited Airlines
Mon 3/1112:05LHR - HRL
1 stop15h 49mUnited Airlines
Deal found 12/9£549
Sat 25/1007:00HRL - LHR
2 stops21h 10mUnited Airlines
Sat 1/1114:30LHR - HRL
2 stops37h 24mUnited Airlines
Deal found 10/9£557
Thu 11/911:55HRL - LHR
2 stops17h 30mUnited Airlines
Mon 29/909:30LHR - HRL
2 stops19h 48mUnited Airlines
Deal found 10/9£743
Thu 11/918:19HRL - LHR
1 stop32h 41mIberia
Mon 29/916:25LHR - HRL
1 stop23h 16mIberia
Deal found 11/9£994
Mon 15/914:05HRL - LHR
2 stops14h 35mUnited Airlines
Wed 17/906:55LHR - HRL
2 stops20h 57mUnited Airlines
Deal found 12/9£1,630

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 September 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 25/10

14:50-11:00

1 stop14h 10m

London Heathrow

Sat 1/11

11:45-23:04

2 stops16h 19m

£529

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 27/10

12:10-07:30

1 stop14h 20m

London Heathrow

Mon 3/11

10:25-21:54

2 stops17h 29m

£551

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 25/10

07:00-10:10

2 stops21h 10m

London Heathrow

Sat 1/11

14:30-22:54

2 stops37h 24m

£557

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 25/10

18:37-12:40

1 stop12h 03m

London Heathrow

Mon 27/10

19:40-09:38

2 stops18h 58m

£2,586

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 25/10

14:50-11:10

2 stops14h 20m

London Heathrow

Mon 27/10

19:40-09:38

2 stops18h 58m

£2,589

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 19/12

14:48-08:15

1 stop11h 27m

London Heathrow

Sat 3/1

15:00-22:48

1 stop13h 48m

£2,822

Flights are sorted by cheapest return flights first.

Deals found on 10/9

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 return 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, January is the cheapest month in which you can book a flight from Harlingen, Texas to London Heathrow Airport (average of £112). Flying from Harlingen, Texas to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

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?

    Located just 3.7 mi from the city center, Harlingen Valley Intl is the airport most travelers will use when flying to London Heathrow from Harlingen. Booking flights from Valley Intl (HRL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.

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

    There are many flights that can get you from Harlingen, Texas to London Heathrow Airport in 12h 03m. Fly via American Airlines, United Airlines, or Iberia to get the fastest option. Harlingen, Texas and London Heathrow Airport are separated by a distance of 5109 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Harlingen, Texas to London Heathrow Airport (average of £112). Flying from Harlingen, Texas to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Winchester
Chichester
Ipswich
Swindon
Dartford
Eastbourne

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Fly with Cheapflights

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How does Cheapflights help users find flights from Harlingen to Heathrow?

When you search for this flight from Harlingen to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Harlingen to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Harlingen to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Harlingen to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Harlingen to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Harlingen to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Harlingen to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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