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

There are many flights that can get you from Harlingen, Texas to London in 16h 33m. Fly via Delta or American Airlines to get the fastest option. The distance between Harlingen, Texas and London is about 5109 mi. This flight may include one or multiple stops.

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.

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).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Harlingen, Texas to London as you normally would.

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.

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.

£466+ Flights from Harlingen, Texas to London

Cheap flight deals from Harlingen to London

Enter your travel dates to find the best prices.

Best flights from Harlingen to London
Discover carefully curated flight deals from Harlingen to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Tue 10/316:07HRL - LHR

2 stops33h 48mDelta

Mon 16/315:50LHR - HRL

2 stops28h 22mDelta

Deal found 3/12£494

Wed 18/310:42HRL - LHR

1 stop16h 33mAmerican Airlines

Tue 24/311:00LHR - HRL

2 stops16h 53mAmerican Airlines

Deal found 4/12£501

Wed 18/310:42HRL - LHR

1 stop20h 33mMultiple Airlines

Tue 24/315:00LHR - HRL

1 stop24h 12mMultiple Airlines

Deal found 4/12£524

Fri 16/107:00HRL - LHR

1 stop21h 15mUnited Airlines

Tue 20/107:30LHR - HRL

2 stops20h 29mUnited Airlines

Deal found 2/12£543

Wed 18/316:07HRL - LHR

1 stop33h 58mDelta

Tue 24/316:35LHR - HRL

2 stops27h 37mDelta

Deal found 3/12£498

Tue 10/310:42HRL - LHR

1 stop16h 33mAmerican Airlines

Mon 16/310:15LHR - HRL

1 stop14h 21mAmerican Airlines

Deal found 4/12£534

Last-minute flights from Harlingen to London
Discover last-minute flight deals from Harlingen to London. Data last updated 5 December 2025 and is based on user searches.

Fri 16/107:00HRL - LHR

1 stop21h 15mUnited Airlines

Tue 20/107:30LHR - HRL

2 stops20h 29mUnited Airlines

Deal found 2/12£543

Fri 23/109:20HRL - LHR

2 stops15h 50mUnited Airlines

Tue 27/108:30LHR - HRL

2 stops19h 29mUnited Airlines

Deal found 3/12£546

Fri 23/115:22HRL - LHR

1 stop12h 38mIberia

Tue 27/108:20LHR - HRL

1 stop15h 54mIberia

Deal found 4/12£750

Find flight deals from Harlingen to London

Round-trip from	£494
One-way from	£466

Delta
10/3-16/3
4 total stops
62h 10m total
Harlingen to London

Search Deals

Iberia
12/12
1 total stop
11h 58m total
Harlingen to London

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

16:07-06:55

2 stops33h 48m

London Heathrow

Mon 16/3

15:50-15:12

2 stops28h 22m

£494

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

16:07-07:05

1 stop33h 58m

London Heathrow

Tue 24/3

16:35-15:12

2 stops27h 37m

£498

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

10:42-08:15

1 stop16h 33m

London Heathrow

Tue 24/3

11:00-22:53

2 stops16h 53m

£501

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 18/3

10:42-12:15

1 stop20h 33m

London Heathrow

Tue 24/3

15:00-10:12

1 stop24h 12m

£524

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 10/3

10:42-08:15

1 stop16h 33m

London Heathrow

Mon 16/3

10:15-19:36

1 stop14h 21m

£534

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 16/1

07:00-10:15

1 stop21h 15m

London Heathrow

Tue 20/1

07:30-21:59

2 stops20h 29m

£543

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 12/12

16:02-10:00

1 stop11h 58m

£466

Flights are sorted by cheapest return flights first.

Deals found on 5/12

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.

Cheapflights Insights

Everything you need to know about your flight from Harlingen to London

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

Currently, November is the cheapest month in which you can book a flight from Harlingen, Texas to London (average of £446). Flying from Harlingen, Texas to London in June is currently the most expensive (average of £1,069). 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

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.
How long is the flight from Harlingen, Texas to London?
There are many flights that can get you from Harlingen, Texas to London in 16h 33m. Fly via Delta or American Airlines to get the fastest option. The distance between Harlingen, Texas and London is about 5109 mi. This flight may include one or multiple stops.
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, November is the cheapest month in which you can book a flight from Harlingen, Texas to London (average of £446). Flying from Harlingen, Texas to London in June is currently the most expensive (average of £1,069). 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.

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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.

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

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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Cheap flights from Harlingen, Texas to London from £466

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Harlingen to London

Best flights from Harlingen to LondonDiscover carefully curated flight deals from Harlingen to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Discover carefully curated flight deals from Harlingen to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

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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.

Cheapflights Insights

Everything you need to know about your flight from Harlingen to London

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

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?

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

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

How can I find direct flights from Harlingen to London?

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

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

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

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

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

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

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Best flights from Harlingen to London
Discover carefully curated flight deals from Harlingen to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.