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

There are many flights that can get you from London Heathrow Airport to Harlingen, Texas in 19h 14m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 5109 mi.

In terms of precipitation, rainfall in Harlingen, Texas ranges from 28.0 - 132.0 inches per month. September is typically the wettest month, when rainfall can reach 132.0 mm. January is typically the driest time to visit Harlingen, Texas when rainfall is around 28.0 mm.

If weather is an important factor for your trip to Harlingen, Texas, 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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 16.0 C).

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

When flying from London Heathrow Airport to Harlingen, Texas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Harlingen from London Heathrow?

Most people fly into Harlingen Valley Intl (HRL) if they book a flight to Harlingen from London Heathrow. On average, Valley Intl has 0 inbound flights from London Heathrow per day from 0 airlines. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.

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

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

How can I find direct flights from Heathrow to Harlingen?

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

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

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

£658+ Flights from London Heathrow Airport to Harlingen, Texas

Cheap flight deals from Heathrow to Harlingen

Round-trip from	£658

United Airlines
7/3-11/3
4 total stops
35h 44m total
London to Harlingen

Search Deals

Find flight deals from Heathrow to Harlingen

Best flights from Heathrow to Harlingen
Discover carefully curated flight deals from Heathrow to Harlingen that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2025.

Sat 7/308:30LHR - HRL

2 stops19h 14mUnited Airlines

Wed 11/314:00HRL - LHR

1 stop12h 30mUnited Airlines

Deal found 13/9£658

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

08:30-21:44

2 stops19h 14m

Harlingen Valley Intl

Wed 11/3

14:00-07:30

1 stop12h 30m

£658

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 28/1

10:00-11:26

1 stop31h 26m

£911

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Best time to book a flight from Heathrow to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Heathrow 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.

Related info for your journey

What airport do you fly into for flights to Harlingen from London Heathrow?
Most people fly into Harlingen Valley Intl (HRL) if they book a flight to Harlingen from London Heathrow. On average, Valley Intl has 0 inbound flights from London Heathrow per day from 0 airlines. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.
How long is the flight from London Heathrow Airport to Harlingen, Texas?
There are many flights that can get you from London Heathrow Airport to Harlingen, Texas in 19h 14m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 5109 mi.
Can I find deals for flights from Heathrow to Harlingen that include hotel bookings?
Yes. In addition to deals on Heathrow to Harlingen flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Harlingen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Harlingen.
Can I find deals for business class flights from Heathrow to Harlingen?
Yes. Cheapflights offers flight deals from Heathrow to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Harlingen.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Harlingen, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Harlingen from Heathrow today and book when prices fit your budget.

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