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$858+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
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 June 12, 2026.

This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 9/255:05 am
HRL
-
LHR
2 stops22h 55m
United Airlines
Sun 9/277:30 am
LHR
-
HRL
2 stops20h 22m
United Airlines
Deal found 6/10$858
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 7/85:22 pm
HRL
-
LHR
1 stop15h 03m
American Airlines
Thu 7/162:25 pm
LHR
-
HRL
1 stop15h 40m
American Airlines
Deal found 6/9$1,103
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 7/87:20 am
HRL
-
LHR
2 stops17h 25m
United Airlines
Thu 7/168:00 am
LHR
-
HRL
2 stops19h 54m
United Airlines
Deal found 6/9$1,108
This United Airlines deal was found by Cheapflights users on 6/7. 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 7/72:05 pm
HRL
-
LHR
2 stops24h 35m
United Airlines
Tue 7/144:40 pm
LHR
-
HRL
2 stops26h 50m
United Airlines
Deal found 6/7$1,109
This Travelocity deal was found by Cheapflights users on 6/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:45 am
HRL
-
LHR
1 stop20h 05m
Iberia
Tue 7/148:55 am
LHR
-
HRL
1 stop31h 17m
Iberia
Deal found 6/7$1,110
This Iberia deal was found by Cheapflights users on 6/9. 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.
Fri 7/316:00 am
HRL
-
LHR
1 stop18h 20m
Iberia
Sat 8/88:55 am
LHR
-
HRL
1 stop15h 18m
Iberia
Deal found 6/9$1,181
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Fri 7/315:10 am
HRL
-
LHR
2 stops19h 35m
United Airlines
Sat 8/89:30 am
LHR
-
HRL
2 stops16h 19m
United Airlines
Deal found 6/9$1,186
This BusinessClass deal was found by Cheapflights users on 6/8. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/232:05 pm
HRL
-
LHR
1 stop11h 50m
Austrian Airlines
Fri 7/31:40 pm
LHR
-
HRL
1 stop14h 14m
Austrian Airlines
Deal found 6/8$7,508
This BusinessClass deal was found by Cheapflights users on 6/8. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/232:05 pm
HRL
-
LHR
2 stops15h 45m
Lufthansa
Fri 7/39:30 am
LHR
-
HRL
2 stops18h 24m
Lufthansa
Deal found 6/8$7,513
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:57 pm
HRL
-
LHR
1 stop13h 53m
Iberia
Fri 7/38:00 pm
LHR
-
HRL
2 stops30h 12m
Iberia
Deal found 6/8$7,682

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 June 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$858
(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 June 12, 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

Fri 9/25

5:05 am-10:00 am

2 stops22h 55m

London Heathrow

Sun 9/27

7:30 am-9:52 pm

2 stops20h 22m

$858

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 7/7

10:45 am-2:25 pm

1 stop21h 40m

London Heathrow

Tue 7/14

9:15 am-8:12 pm

2 stops16h 57m

$1,109

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 7/7

2:05 pm-8:40 pm

2 stops24h 35m

London Heathrow

Tue 7/14

4:40 pm-1:30 pm

2 stops26h 50m

$1,109

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 7/7

10:45 am-12:50 pm

1 stop20h 05m

London Heathrow

Tue 7/14

8:55 am-10:12 am

1 stop31h 17m

$1,110

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 7/31

6:00 am-6:20 am

1 stop18h 20m

London Heathrow

Sat 8/8

8:55 am-6:13 pm

1 stop15h 18m

$1,181
Quickest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Fri 7/31

2:05 pm-7:55 am

1 stop11h 50m

London Heathrow

Sat 8/8

7:45 am-7:49 pm

2 stops18h 04m

$1,186

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 6/23

2:05 pm-11:50 am

2 stops15h 45m

London Heathrow

Fri 7/3

9:30 am-9:54 pm

2 stops18h 24m

$7,513

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 6/23

4:57 pm-12:50 pm

1 stop13h 53m

London Heathrow

Fri 7/3

8:00 pm-8:12 pm

2 stops30h 12m

$7,682
Cheapest one-way

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 7/30

5:10 am-7:45 am

1 stop20h 35m

$1,033
Quickest one-way

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 7/30

7:20 am-5:55 am

2 stops16h 35m

$1,071

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 12 resultsSorted by cheapest first
1
2
  • 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 21h 40m. 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
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

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