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

Departing from London to Harlingen, Texas will take you 19h 14m. Airlines will cover a distance of 5109 mi.

What is the cheapest day to fly from London to Harlingen, Texas?

Travellers seeking maximum savings on their London to Harlingen, Texas flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 LON to HRL?

When flying from London 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?

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

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

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

How can I find direct flights from London to Harlingen?

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

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

Yes. Cheapflights offers flight deals from London 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.

£659+ Cheap Flights from London to Harlingen, Texas

Cheap flight deals from London to Harlingen

Round-trip from	£659

United Airlines
7/3-11/3
3 total stops
34h 29m total
London to Harlingen

Search Deals

Find flight deals from London to Harlingen

Cheapest flights from London to Harlingen
Explore the most affordable flight options available from London to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Wed 19/1109:30LHR - HRL

2 stops18h 24mUnited Airlines

Wed 3/1212:16HRL - LHR

1 stop13h 14mUnited Airlines

Deal found 17/9£661

Wed 1/1010:00LHR - HRL

1 stop15h 41mUnited Airlines

Tue 7/1014:05HRL - LHR

1 stop11h 35mUnited Airlines

Deal found 17/9£683

Best flights from London to Harlingen
Discover carefully curated flight deals from London to Harlingen that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Sat 7/308:30LHR - HRL

2 stops19h 14mUnited Airlines

Wed 11/314:00HRL - LHR

1 stop15h 15mUnited Airlines

Deal found 15/9£659

Wed 19/1109:30LHR - HRL

2 stops18h 24mUnited Airlines

Wed 3/1212:16HRL - LHR

1 stop13h 14mUnited Airlines

Deal found 17/9£661

Wed 1/1010:00LHR - HRL

1 stop15h 41mUnited Airlines

Tue 7/1014:05HRL - LHR

1 stop11h 35mUnited Airlines

Deal found 17/9£683

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

14:00-10:15

1 stop15h 15m

£659

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 19/11

09:30-21:54

2 stops18h 24m

Harlingen Valley Intl

Wed 3/12

12:16-07:30

1 stop13h 14m

£661

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 1/10

10:00-19:41

1 stop15h 41m

Harlingen Valley Intl

Tue 7/10

14:05-07:40

1 stop11h 35m

£683

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 London to Harlingen

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

What’s the top stopover airport for flights from London to Harlingen, Texas?

Houston (IAH) – chosen by Cheapflights users on 87% of one-stop itineraries from London to Harlingen, Texas on Cheapflights.

What’s the cheapest stopover airport for flights from London to Harlingen, Texas?

Houston (IAH) is the most affordable one-stop option, with an average return flight price of £868.

What’s the fastest stopover option from London to Harlingen, Texas?

Flights via Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 13h 41m.

Which airport typically offers the quickest stopover for flights from London to Harlingen, Texas?

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 42m.

Reviews of airlines servicing Harlingen

Check out reviews from past customers who have flown with United Airlines from London to Harlingen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

FERNANDO,Sept 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

FERNANDO,Sept 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

What airport do you fly into for flights to Harlingen from London?
Located just 3.7 mi from the city center, Harlingen Valley Intl is the airport most travelers will use when flying to Harlingen from London. Booking flights from London to Valley Intl (HRL) should be relatively easy as there are 0 daily inbound flights from London from 0 different airlines.
How long is the flight from London to Harlingen, Texas?
Departing from London to Harlingen, Texas will take you 19h 14m. Airlines will cover a distance of 5109 mi.
Can I find deals for flights from London to Harlingen that include hotel bookings?
Yes. In addition to deals on London to Harlingen flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Harlingen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Harlingen.
Can I find deals for business class flights from London to Harlingen?
Yes. Cheapflights offers flight deals from London 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Cheap flights from London to Harlingen, Texas from £659

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Harlingen

Round-trip from

Find flight deals from London to Harlingen

Cheapest flights from London to HarlingenExplore the most affordable flight options available from London to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Explore the most affordable flight options available from London to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Cheapflights Fare Finder

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

Best time to book a flight from London to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from London with our price prediction graph.

Cheapflights Insights

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

What’s the top stopover airport for flights from London to Harlingen, Texas?

Share of one-stop return flights from London to Harlingen, Texas chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Harlingen, Texas?

Average return fare for one-stop flights from London to Harlingen, Texas, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Harlingen, Texas?

Shortest average travel time for one-stop one-way flights from London to Harlingen, Texas, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Harlingen, Texas?

Average stopover duration for one-stop one-way flights from London to Harlingen, Texas, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Harlingen

Check out reviews from past customers who have flown with United Airlines from London to Harlingen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

How can I find direct flights from London to Harlingen?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Harlingen

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

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

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

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

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Cheapest flights from London to Harlingen
Explore the most affordable flight options available from London to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.