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£476+ Cheap flights to Harlingen, Texas

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
— HRL
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to Harlingen
Explore the most affordable flight options available to Harlingen. Find the lowest fares based on data from user searches, with prices last updated on 18 November 2025.

Mon 22/1217:45LHR - HRL
2 stops45h 55mMultiple Airlines
Sat 10/118:44HRL - LHR
1 stop30h 06mMultiple Airlines
Deal found 15/11£1,118
Mon 22/1211:55LHR - HRL
1 stop13h 46mIberia
Sat 10/106:02HRL - LHR
1 stop23h 38mIberia
Deal found 15/11£1,389
Mon 22/1209:10LHR - HRL
2 stops16h 26mUnited Airlines
Sat 3/107:00HRL - LHR
1 stop18h 30mUnited Airlines
Deal found 15/11£1,423
Mon 22/1213:25LHR - HRL
2 stops32h 41mAir Canada
Sat 3/107:00HRL - LHR
2 stops46h 20mAir Canada
Deal found 15/11£1,521

Flights to Harlingen, TX in 2025

Find the latest flights to Harlingen in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 18 November 2025.

Return from

£832

One-way from

£476
United Airlines
  • United Airlines
  • 7/3-11/3
  • 3 total stops
  • 33h 46m total
  • London to Harlingen
Search Deals
25/3
  • 25/3
  • 3 total stops
  • 32h 11m total
  • London to Harlingen
Search Deals

Cheapflights Fare Finder

 
Locate flights to Harlingen that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 18 November 2025.
Use the filters below to find and compare flights to Harlingen that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

09:30-21:56

2 stops18h 26m

Harlingen Valley Intl

Wed 11/3

09:20-07:30

1 stop17h 10m

£830

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

08:20-18:16

1 stop15h 56m

Harlingen Valley Intl

Wed 11/3

12:10-08:15

1 stop15h 05m

£854

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Mon 22/12

17:45-09:40

2 stops45h 55m

Harlingen Valley Intl

Sat 10/1

18:44-06:50

1 stop30h 06m

£1,118

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Mon 22/12

11:55-19:41

1 stop13h 46m

Harlingen Valley Intl

Sat 10/1

06:02-11:40

1 stop23h 38m

£1,389

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Mon 22/12

09:10-19:36

2 stops16h 26m

Harlingen Valley Intl

Sat 3/1

07:00-07:30

1 stop18h 30m

£1,423

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 25/3

14:50-18:01

3 stops32h 11m

£476

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 25/3

14:50-14:29

2 stops28h 39m

£584

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 25/3

06:30-11:16

2 stops33h 46m

£646

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Wed 25/3

12:10-00:04

2 stops16h 54m

£663

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Thu 26/3

10:20-09:09

3 stops27h 49m

£666

Flights are sorted by cheapest return flights first.

Deals found on 16/11

Showing 1-10 of 13 results
1
2

Best time to book a flight to Harlingen

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

How long is the flight to Harlingen?

On average, a flight from London to Harlingen takes 18 hours 26 minutes. Flights to Harlingen from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

Rainfall in Harlingen by month

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

In terms of precipitation, rainfall in Harlingen 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 when rainfall is around 28.0 mm.

Temperature in Harlingen by month

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

If weather is an important factor for your trip to Harlingen, 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).

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated 18 November 2025.
Get a feel of what it's like to fly with United Airlines to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,014 reviews
Check prices

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
United Airlines
7.4
Good
9,014 reviews
United Airlines
7.4
Good
9,014 reviews
Check prices

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

FAQs about flying to Harlingen

Getting around Harlingen

Texas is a big place, to visitors should really rent a car if they want to make the most out of their stay. Reaching the Gulf Coast and towns like Austin will be much easier with a rental car. However, if you want to stay in town, then the malls and downtown can be accessed on foot or by bike, and Harlingen is a pretty cycle-friendly destination.

Getting from the Airport to the City

There are no scheduled public bus services from Valley International Airport (HRL), but getting into town or to resort hotels will not be a problem. There are a number of shuttle bus providers, and book a place in advance to eliminate any stress when you arrive. Alternatively, cabs will meet most arrivals and the major car rental outlets are all represented at the arrivals terminal.

  • What airport do you fly into for flights to Harlingen?

    Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly into when you book flights to Harlingen.

  • Can I find cheaper flights to Harlingen if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Harlingen on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Where does the fastest flight to Harlingen depart from?

    For those looking to save time traveling to Harlingen, London offers the quickest one-way flight (18 hours 26 minutes).

  • Does Harlingen Valley Intl have car hire?

    Yes. Those touching down at Harlingen Valley Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Harlingen Valley Intl?

    Yes. Harlingen Valley Intl has hotels nearby for those requiring accommodations. Pineywood Hollow - Cozy Duplex - Furnished Patio is the closest property to Harlingen Valley Intl (1.0 mi away from Harlingen Valley Intl).

See more FAQs

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