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$927+ Cheap flights from Harlingen (HRL) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap flight deals from Harlingen to Heathrow

Cheapest flights from Harlingen to Heathrow
Explore the most affordable flight options available from Harlingen to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.

This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/159:20 am
HRL
-
LHR
2 stops15h 50m
United Airlines
Wed 12/233:00 pm
LHR
-
HRL
2 stops34h 50m
United Airlines
Deal found 7/22$927
This Iberia deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:43 pm
HRL
-
LHR
1 stop12h 07m
Iberia
Wed 9/26:15 am
LHR
-
HRL
2 stops22h 39m
Iberia
Deal found 7/24$934
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1512:13 pm
HRL
-
LHR
1 stop14h 02m
American Airlines
Wed 12/232:45 pm
LHR
-
HRL
1 stop14h 03m
American Airlines
Deal found 7/22$945
This Orbitz deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:40 am
HRL
-
LHR
1 stop22h 20m
Iberia
Mon 11/301:25 pm
LHR
-
HRL
2 stops26h 45m
Iberia
Deal found 7/22$946
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/32:00 pm
HRL
-
LHR
2 stops24h 40m
United Airlines
Sun 10/185:40 pm
LHR
-
HRL
2 stops32h 04m
United Airlines
Deal found 7/22$954
This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:28 pm
HRL
-
LHR
1 stop30h 52m
Iberia
Sun 10/184:25 pm
LHR
-
HRL
1 stop23h 43m
Iberia
Deal found 7/22$985
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:18 pm
HRL
-
LHR
1 stop12h 17m
United Airlines
Sun 9/1310:00 am
LHR
-
HRL
1 stop15h 39m
United Airlines
Deal found 7/23$1,011
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:00 pm
HRL
-
LHR
1 stop11h 45m
United Airlines
Sun 10/181:40 pm
LHR
-
HRL
1 stop14h 12m
United Airlines
Deal found 7/23$1,014

Find flight deals from Harlingen to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$927
(United Airlines)
Provider with most accurate pricing for Harlingen Valley Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-London Heathrow flights.
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From Harlingen Valley Intl to London Heathrow
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
Use the filters below to find and compare flights from Harlingen to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 12/15

9:20 am-7:10 am

2 stops15h 50m

London Heathrow

Wed 12/23

3:00 pm-7:50 pm

2 stops34h 50m

$927

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 8/24

6:43 pm-12:50 pm

1 stop12h 07m

London Heathrow

Wed 9/2

6:15 am-10:54 pm

2 stops22h 39m

$934

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/3

2:00 pm-8:40 pm

2 stops24h 40m

London Heathrow

Sun 10/18

5:40 pm-7:44 pm

2 stops32h 04m

$954

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/3

5:28 pm-6:20 am

1 stop30h 52m

London Heathrow

Sun 10/18

4:25 pm-10:08 am

1 stop23h 43m

$985

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 9/6

5:18 pm-11:35 am

1 stop12h 17m

London Heathrow

Sun 9/13

10:00 am-7:39 pm

1 stop15h 39m

$1,011

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 8/24

1:59 pm-11:55 am

2 stops15h 56m

London Heathrow

Wed 9/2

11:05 am-9:52 pm

2 stops16h 47m

$1,017

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 10/8

5:05 am-6:45 am

2 stops19h 40m

London Heathrow

Sun 10/18

8:00 am-9:52 pm

2 stops19h 52m

$1,239
Quickest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 11/8

2:47 pm-8:15 am

1 stop11h 28m

London Heathrow

Sun 11/15

10:05 am-6:11 pm

1 stop14h 06m

$6,993
Cheapest one-way
Quickest one-way

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 8/28

6:43 pm-12:50 pm

1 stop12h 07m

$1,251

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Harlingen-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harlingen-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Harlingen-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Harlingen to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Harlingen with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Heathrow. 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 Heathrow?

    For a flight from Harlingen to London Heathrow, you will be flying from Valley Intl. Harlingen Valley Intl (HRL) is just 3.7 mi from the center of the city. Valley Intl is the only Harlingen airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Harlingen Valley Intl on a regular basis.

  • How long is the flight from Harlingen to London Heathrow Airport?

    Departing from Harlingen to London Heathrow Airport will take you 12h 07m. The distance from Harlingen to London Heathrow Airport is about 5109 mi. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Harlingen to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Heathrow 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

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