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Cheap flights from Harlingen, Texas to London from £656

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LON
27 Feb — 6 Mar1
1 adult

Cheap flight deals from Harlingen to London

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to London (LON). 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 22 February 2025.

Round-trip from

£736

Popular in

June

Cheapest in

April

Average price

£737
United Airlines
  • United Airlines
  • 14/8-31/8
  • 4 total stops
  • 53h 54m total
  • Harlingen to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£153 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£40 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Harlingen to London

Cheapest flights from Harlingen to London
Explore the most affordable flight options available from Harlingen to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Thu 11/911:55HRL - LHR
1 stop13h 45mUnited Airlines
Mon 29/915:50LHR - HRL
2 stops33h 39mUnited Airlines
Deal found 22/2£656
Thu 14/807:00HRL - LHR
3 stops21h 00mAir Canada
Sun 31/817:40LHR - HRL
3 stops27h 54mAir Canada
Deal found 21/2£2,970

Find flights from Harlingen to London within your budget

Customise your flight search to find flights from Harlingen to London 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 22 February 2025.

Fly from

Harlingen

Fly to

London

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 14/8

14:00-11:45

2 stops15h 45m

London Heathrow

Sun 31/8

07:25-15:34

2 stops38h 09m

£736

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 14/8

07:00-10:00

3 stops21h 00m

London Heathrow

Sun 31/8

17:40-15:34

3 stops27h 54m

£2,970

Flights are sorted by cheapest return flights first.

Deals found on 22/2

Best time to book a flight from Harlingen to London

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

Travel insights for flights from Harlingen to London

Get recent, data-driven insights about flights from Harlingen to London including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Harlingen, Texas to London (average of £112). Flying from Harlingen, Texas to London in August is currently the most expensive (average of £163). 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 22 February 2025.
United Airlines
7.4
Good
8,759 reviews
Check prices

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,759 reviews
United Airlines
7.4
Good
8,759 reviews
Check prices

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Air Canada
7.0
Good
8,758 reviews
United Airlines
7.4
Good
8,759 reviews
Check prices

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

    If you book a flight to London 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. There are 0 flights from Valley Intl to London per day from 0 different airlines.

  • What are the cheapest airlines flying from Harlingen, Texas to London round-trip?

    Cheapflights users have booked flights from Harlingen, Texas to London round-trip from £736. Another airline that can offer you cheap pricing is Air Canada.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to London 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?

    Currently, January is the cheapest month in which you can book a flight from Harlingen, Texas to London (average of £112). Flying from Harlingen, Texas to London in August is currently the most expensive (average of £163). 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 Harlingen?

Book flights to Harlingen if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Croydon
Gatwick
Slough
Luton
Ilford
Hayes
Eastbourne
Wembley
Southend-on-Sea
Ipswich
Winchester
Maidstone
Crawley
Southall
Watford
Dartford
Stansted

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Fly with Cheapflights

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

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

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

Certainly. Search results for flights to London from Harlingen shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Of course! You can now track prices for flights from Harlingen to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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