Which airlines fly to Harlingen, Texas?

When flying to Harlingen, Texas from United Kingdom, momondo travellers will most often fly with one of these popular airlines: British Airways or United Airlines. Depending on what airport in United Kingdom you fly from, you may be able to find flights with any of these popular airlines.

How long does it take to fly to Harlingen, Texas?

The flight from United Kingdom to Harlingen, Texas depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from London Heathrow (a popular airport in United Kingdom) to McAllen Miller Intl (the most popular airport in Harlingen, Texas), then the flight time is 20h 59m on average. If you fly from Manchester (another popular airport in United Kingdom) to McAllen Miller Intl, then the average flight time is 21h 47m.

£830 Cheap Flights to Harlingen in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United Kingdom to Harlingen, Texas

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:20 - 22:51LHR-HRL

20h 31m2 stops

12:10 - 10:10HRL-LHR

17h 00m2 stops

£830American Airlines

Find Deal

Sat, 7 Mar - Wed, 11 Mar

10:15 - 18:16LHR-HRL

14h 01m1 stop

12:10 - 10:10HRL-LHR

17h 00m2 stops

£832American Airlines

Find Deal

Sat, 7 Mar - Wed, 11 Mar

08:30 - 21:44LHR-HRL

19h 14m2 stops

09:20 - 07:30HRL-LHR

17h 10m1 stop

£840United Airlines

Find Deal

Sat, 7 Mar - Wed, 11 Mar

15:00 - 22:51LHR-HRL

13h 51m1 stop

10:04 - 08:15HRL-LHR

17h 11m1 stop

£854American Airlines

Find Deal

Sat, 7 Mar - Wed, 11 Mar

10:15 - 18:16LHR-HRL

14h 01m1 stop

12:10 - 06:50HRL-LHR

13h 40m1 stop

£856American Airlines

Find Deal

Sat, 7 Mar - Wed, 11 Mar

06:00 - 14:46BHX-HRL

38h 46m2 stops

15:41 - 08:30HRL-BHX

34h 49m2 stops

£960Delta

Find Deal

Wed, 3 Dec - Sun, 7 Dec

09:20 - 14:46BHX-HRL

59h 26m2 stops

15:41 - 12:50HRL-BHX

39h 09m2 stops

£988Delta

Find Deal

Wed, 3 Dec - Sun, 7 Dec

Fly from

Route

Depart

Return

Price

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

08:20-22:51

2 stops20h 31m

Harlingen Valley Intl

Wed 11/3

12:10-10:10

2 stops17h 00m

£830

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

10:15-18:16

1 stop14h 01m

Harlingen Valley Intl

Wed 11/3

12:10-10:10

2 stops17h 00m

£832

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

08:30-21:44

2 stops19h 14m

Harlingen Valley Intl

Wed 11/3

09:20-07:30

1 stop17h 10m

£840

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

15:00-22:51

1 stop13h 51m

Harlingen Valley Intl

Wed 11/3

10:04-08:15

1 stop17h 11m

£854

LondonHarlingen

LHR - HRL

LHRHRL

London Heathrow

Sat 7/3

10:15-18:16

1 stop14h 01m

Harlingen Valley Intl

Wed 11/3

12:10-06:50

1 stop13h 40m

£856

BirminghamHarlingen

BHX - HRL

BHXHRL

Birmingham

Wed 3/12

06:00-14:46

2 stops38h 46m

Harlingen Valley Intl

Sun 7/12

15:41-08:30

2 stops34h 49m

£960

BirminghamHarlingen

BHX - HRL

BHXHRL

Birmingham

Wed 3/12

09:20-14:46

2 stops59h 26m

Harlingen Valley Intl

Sun 7/12

15:41-12:50

2 stops39h 09m

£988

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Harlingen, Texas flights insights and trends

Explore insights for your Harlingen, Texas flight to craft the best travel plan

Prices

Other information

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart from United Kingdom to Harlingen, Texas is on a Friday when prices can be found for as low as £882. The most expensive day to fly to Harlingen, Texas is Wednesday, with ticket prices averaging around £943.

Cheap Harlingen, Texas flight deals and tips

Summary info about Harlingen, Texas flight prices, duration and airlines

Best Round-Trip Price	£830
Fastest flight time	13h 51m

The best round-trip flight price to Harlingen from United Kingdom in the last 72 hours is £830 (London Heathrow to Harlingen Valley Intl).

Search Deals

The fastest flight to Harlingen from United Kingdom takes 13h 51m (London Heathrow to Harlingen Valley Intl).

Search Deals

Frequently asked questions about flying to Harlingen, Texas

Is there an alternative airport near Harlingen, Texas?

Those flying to Harlingen, Texas could potentially find better pricing at Harlingen Valley Intl Airport (4 mi from Harlingen, Texas city centre) or Brownsville South Padre Is. Intl Airport (26 mi from Harlingen, Texas city centre) depending on the month and departure airport.

Is there a cheaper alternative to flying into Harlingen, Texas?

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Harlingen, Texas is Brownsville South Padre Is. Intl Airport where the average price is £111. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Harlingen Valley Intl Airport?

Prices for flights to Harlingen Valley Intl Airport are updated daily.

How many operators does momondo search for flights to Harlingen Valley Intl Airport?

There is 1 operator available for flights to Harlingen Valley Intl Airport as of October 2025.

How old do you have to be to fly to Harlingen Valley Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Harlingen Valley Intl Airport.

What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

The required travel and health documents for your Harlingen Valley Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Harlingen Valley Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal to Harlingen?

We help find the flight that best suits your needs; momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight for you.

Can I find flights to Harlingen with flexible booking policies on momondo?

Flights to Harlingen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights to Harlingen?

momondo provides multiple filters to help you find the best flight to Harlingen. Filter by price, airline, airport, cabin, aircraft, payment method, number of stops and more.