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$427+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — LHR
May 27 — Jun 31
Wed 5/27
Wed 6/3
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 April 27, 2026.

This United Airlines deal was found by Cheapflights users on 4/23. 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 12/65:16 pm
HRL
-
LHR
2 stops36h 04m
United Airlines
Wed 12/97:30 am
LHR
-
HRL
2 stops44h 14m
United Airlines
Deal found 4/23$781
This Iberia deal was found by Cheapflights users on 4/26. 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.
Tue 9/86:43 pm
HRL
-
LHR
1 stop13h 42m
Iberia
Tue 9/156:15 am
LHR
-
HRL
2 stops22h 41m
Iberia
Deal found 4/26$871
This United Airlines deal was found by Cheapflights users on 4/26. 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 11/1812:10 pm
HRL
-
LHR
1 stop13h 20m
United Airlines
Wed 11/253:00 pm
LHR
-
HRL
2 stops34h 29m
United Airlines
Deal found 4/26$887
This Air Canada deal was found by Cheapflights users on 4/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:27 am
HRL
-
LHR
2 stops17h 43m
Air Canada
Wed 12/911:10 am
LHR
-
HRL
2 stops38h 19m
Air Canada
Deal found 4/22$891
This Booking.com deal was found by Cheapflights users on 4/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:16 pm
HRL
-
LHR
2 stops34h 44m
Air Canada
Tue 9/155:40 pm
LHR
-
HRL
2 stops25h 34m
Air Canada
Deal found 4/26$896
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:00 pm
HRL
-
LHR
2 stops17h 50m
Delta
Wed 11/253:50 pm
LHR
-
HRL
2 stops27h 41m
Delta
Deal found 4/26$916
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:59 pm
HRL
-
LHR
1 stop15h 36m
United Airlines
Wed 10/77:30 am
LHR
-
HRL
2 stops20h 22m
United Airlines
Deal found 4/24$924

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 April 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$871
(Iberia)

One-way from

$427
(Cheapflightsfares)
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.
Search Deals
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 April 27, 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 9/8

6:43 pm-2:25 pm

1 stop13h 42m

London Heathrow

Tue 9/15

6:15 am-10:56 pm

2 stops22h 41m

$871

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 9/8

5:16 pm-10:00 am

2 stops34h 44m

London Heathrow

Tue 9/15

5:40 pm-1:14 pm

2 stops25h 34m

$896

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 9/24

1:59 pm-11:35 am

1 stop15h 36m

London Heathrow

Wed 10/7

7:30 am-9:52 pm

2 stops20h 22m

$924

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 9/21

7:27 am-10:00 am

2 stops20h 33m

London Heathrow

Sat 9/26

5:40 pm-3:58 pm

2 stops28h 18m

$941
Quickest round-trip

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Mon 9/21

2:00 pm-7:45 am

1 stop11h 45m

London Heathrow

Sat 9/26

1:40 pm-9:52 pm

1 stop14h 12m

$952

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 5/7

7:00 am-7:45 am

1 stop18h 45m

London Heathrow

Sun 5/10

7:25 am-8:00 pm

2 stops18h 35m

$1,128

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Thu 5/21

7:20 am-9:35 am

2 stops20h 15m

London Heathrow

Tue 6/2

10:00 am-7:49 pm

1 stop15h 49m

$1,131

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 5/17

7:00 am-7:15 am

2 stops18h 15m

London Heathrow

Thu 6/4

10:00 am-7:49 pm

1 stop15h 49m

$1,151
Cheapest one-way

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/4

8:04 pm-2:25 pm

1 stop12h 21m

$427

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Wed 7/15

7:20 am-7:15 am

2 stops17h 55m

$630

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 17 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 42m. 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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