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$332+ Cheap flights from Harlingen (HRL) to Heathrow (LHR)

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
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 May 5, 2026.

This Expedia deal was found by Cheapflights users on 5/5. 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.
Mon 8/317:27 am
HRL
-
LHR
2 stops41h 08m
Air Canada
Sun 9/139:30 am
LHR
-
HRL
2 stops39h 59m
Air Canada
Deal found 5/5$958
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Mon 8/315:16 pm
HRL
-
LHR
1 stop32h 39m
United Airlines
Sun 9/131:40 pm
LHR
-
HRL
1 stop14h 04m
United Airlines
Deal found 5/5$959
This United Airlines deal was found by Cheapflights users on 5/2. 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 8/132:00 pm
HRL
-
LHR
1 stop15h 35m
United Airlines
Sat 9/56:55 am
LHR
-
HRL
2 stops18h 34m
United Airlines
Deal found 5/2$974
This Iberia deal was found by Cheapflights users on 5/2. 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.
Thu 8/134:58 pm
HRL
-
LHR
1 stop13h 12m
Iberia
Sat 9/52:25 pm
LHR
-
HRL
1 stop14h 29m
Iberia
Deal found 5/2$1,003
This United Airlines deal was found by Cheapflights users on 5/1. 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 5/112:05 pm
HRL
-
LHR
1 stop13h 50m
United Airlines
Thu 5/77:30 am
LHR
-
HRL
2 stops20h 29m
United Airlines
Deal found 5/1$1,089
This Iberia deal was found by Cheapflights users on 5/1. 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 5/17:53 pm
HRL
-
LHR
1 stop12h 32m
Iberia
Thu 5/710:05 am
LHR
-
HRL
1 stop15h 17m
Iberia
Deal found 5/1$1,107
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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.
Sun 11/112:11 pm
HRL
-
LHR
1 stop12h 39m
Iberia
Sat 11/1411:55 am
LHR
-
HRL
1 stop13h 35m
Iberia
Deal found 4/30$1,248
This United Airlines deal was found by Cheapflights users on 5/4. 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 6/187:20 am
HRL
-
LHR
1 stop18h 25m
United Airlines
Thu 6/252:05 pm
LHR
-
HRL
2 stops37h 49m
United Airlines
Deal found 5/4$1,448

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$958
(Expedia)

One-way from

$332
(United Airlines)
Provider with most accurate pricing for Harlingen Valley Intl-London Heathrow flight deals.
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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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One-way flight 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 May 5, 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

Mon 8/31

5:16 pm-7:55 am

1 stop32h 39m

London Heathrow

Sun 9/13

1:40 pm-9:44 pm

1 stop14h 04m

$959

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 8/13

2:00 pm-11:35 am

1 stop15h 35m

London Heathrow

Sat 9/5

6:55 am-7:29 pm

2 stops18h 34m

$974

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 8/13

4:58 pm-12:10 pm

1 stop13h 12m

London Heathrow

Sat 9/5

2:25 pm-10:54 pm

1 stop14h 29m

$1,003
Quickest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 11/1

12:11 pm-6:50 am

1 stop12h 39m

London Heathrow

Sat 11/14

11:55 am-7:30 pm

1 stop13h 35m

$1,248

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 6/18

7:20 am-7:45 am

1 stop18h 25m

London Heathrow

Thu 6/25

2:05 pm-9:54 pm

2 stops37h 49m

$1,448
Cheapest one-way

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 9/6

5:15 am-7:45 am

1 stop20h 30m

$332

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 9/6

7:27 am-6:30 am

3 stops17h 03m

$340

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 5/10

7:53 pm-2:25 pm

1 stop12h 32m

$706

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 7/30

5:22 pm-5:15 pm

2 stops17h 53m

$900

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 7/30

5:10 am-7:45 am

1 stop20h 35m

$942

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 11 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 13h 12m. 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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

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