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

There are many flights that can get you from Harlingen, Texas to London in 18h 30m. Fly via Air Canada, United Airlines, or Iberia 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.

£674+ Flights from Harlingen, Texas to London

Cheap flight deals from Harlingen to London

Round-trip from	£674

Air Canada
20/11-24/11
4 total stops
52h 29m total
Harlingen to London

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 16 September 2025.

Thu 20/1105:00HRL - LHR

2 stops19h 30mAir Canada

Mon 24/1113:00LHR - HRL

2 stops32h 59mAir Canada

Deal found 15/9£674

Thu 20/1107:00HRL - LHR

1 stop18h 30mUnited Airlines

Mon 24/1112:05LHR - HRL

1 stop13h 34mUnited Airlines

Deal found 15/9£709

Thu 20/1105:40HRL - LHR

2 stops18h 40mIberia

Mon 24/1110:05LHR - HRL

1 stop14h 03mIberia

Deal found 15/9£749

Thu 25/1214:48HRL - LHR

1 stop11h 47mIberia

Thu 8/108:20LHR - HRL

1 stop13h 57mIberia

Deal found 14/9£847

Fri 19/914:51HRL - LHR

1 stop12h 09mIberia

Sun 21/910:30LHR - HRL

1 stop13h 19mIberia

Deal found 15/9£946

Wed 17/914:51HRL - LHR

1 stop12h 09mIberia

Fri 19/910:30LHR - HRL

1 stop13h 35mIberia

Deal found 15/9£2,033

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 16 September 2025.

Thu 20/1105:00HRL - LHR

2 stops19h 30mAir Canada

Mon 24/1113:00LHR - HRL

2 stops32h 59mAir Canada

Deal found 15/9£674

Thu 20/1107:00HRL - LHR

1 stop18h 30mUnited Airlines

Mon 24/1112:05LHR - HRL

1 stop13h 34mUnited Airlines

Deal found 15/9£709

Thu 20/1105:40HRL - LHR

2 stops18h 40mIberia

Mon 24/1110:05LHR - HRL

1 stop14h 03mIberia

Deal found 15/9£749

Thu 25/1214:48HRL - LHR

1 stop11h 47mIberia

Thu 8/108:20LHR - HRL

1 stop13h 57mIberia

Deal found 14/9£847

Fly from

Fly to

Route

Depart

Return

Price

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 20/11

05:00-06:30

2 stops19h 30m

London Heathrow

Mon 24/11

13:00-15:59

2 stops32h 59m

£674

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 20/11

07:00-07:30

1 stop18h 30m

London Heathrow

Mon 24/11

12:05-19:39

1 stop13h 34m

£709

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 20/11

05:40-06:20

2 stops18h 40m

London Heathrow

Mon 24/11

10:05-18:08

1 stop14h 03m

£749

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 25/12

14:48-08:35

1 stop11h 47m

London Heathrow

Thu 8/1

08:20-16:17

1 stop13h 57m

£847

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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, 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 £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

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 18h 30m. Fly via Air Canada, United Airlines, or Iberia 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, 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 £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.

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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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Cheap flights from Harlingen, Texas to London from £674

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Harlingen to London

Round-trip from

Find flight deals from Harlingen to London

Cheapest flights from Harlingen to LondonExplore 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 16 September 2025.

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 16 September 2025.

Cheapflights Fare Finder

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

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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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 16 September 2025.