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Cheap flights from Harlingen to London from $877

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to London departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from Harlingen to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
5:54 am - 9:00 am
HRL
-
LHR
21h 06m
1 stop
Iberia Logo
9:15 am - 10:04 am
LHR
-
HRL
30h 49m
2 stops
$877Iberia
Tue, Aug 11 - Tue, Aug 25
United Airlines Logo
5:18 pm - 9:20 pm
HRL
-
LHR
22h 02m
2 stops
United Airlines Logo
6:55 am - 9:52 pm
LHR
-
HRL
20h 57m
2 stops
$879United Airlines
Sat, Oct 10 - Thu, Oct 15
United Airlines Logo
5:18 pm - 7:45 am
HRL
-
LHR
32h 27m
1 stop
United Airlines Logo
7:25 am - 7:33 pm
LHR
-
HRL
18h 08m
2 stops
$880United Airlines
Sat, Oct 10 - Thu, Oct 15
United Airlines Logo
5:15 am - 6:30 am
HRL
-
LHR
19h 15m
2 stops
United Airlines Logo
2:05 pm - 9:44 pm
LHR
-
HRL
37h 39m
2 stops
$886United Airlines
Tue, Aug 11 - Tue, Aug 25
United Airlines Logo
2:00 pm - 11:35 am
HRL
-
LHR
15h 35m
1 stop
United Airlines Logo
10:00 am - 9:44 pm
LHR
-
HRL
17h 44m
1 stop
$903United Airlines
Tue, Aug 11 - Tue, Aug 25
Iberia Logo
8:03 pm - 6:20 am
HRL
-
LHR
28h 17m
1 stop
Iberia Logo
8:55 am - 4:31 pm
LHR
-
HRL
13h 36m
1 stop
$910Iberia
Sat, Oct 10 - Thu, Oct 15
United Airlines Logo
2:00 pm - 11:35 am
HRL
-
LHR
15h 35m
1 stop
United Airlines Logo
6:55 am - 7:29 pm
LHR
-
HRL
18h 34m
2 stops
$974United Airlines
Thu, Aug 13 - Sat, Sep 5
United Airlines Logo
5:15 am - 10:00 am
HRL
-
LHR
22h 45m
2 stops
United Airlines Logo
7:25 am - 7:29 pm
LHR
-
HRL
18h 04m
2 stops
$978United Airlines
Thu, Aug 13 - Sat, Sep 5
Iberia Logo
4:58 pm - 12:10 pm
HRL
-
LHR
13h 12m
1 stop
Iberia Logo
2:25 pm - 10:54 pm
LHR
-
HRL
14h 29m
1 stop
$1,003Iberia
Thu, Aug 13 - Sat, Sep 5
United Airlines Logo
5:18 pm - 11:35 am
HRL
-
LHR
12h 17m
1 stop
United Airlines Logo
7:25 am - 7:49 pm
LHR
-
HRL
18h 24m
2 stops
$1,118United Airlines
Sun, May 17 - Tue, Jun 2

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Iberia flights from Harlingen to London Heathrow Airport

Our best Iberia deals on Harlingen to London Heathrow Airport flight tickets
Iberia
Aug 11
HRL5:54 amHarlingen Valley Intl
21h 06m
1 stop
LHR9:00 amLondon Heathrow
Aug 25
LHR9:15 amLondon Heathrow
30h 49m
2 stops
HRL10:04 amHarlingen Valley Intl
$877
Iberia
Oct 10
HRL8:03 pmHarlingen Valley Intl
28h 17m
1 stop
LHR6:20 amLondon Heathrow
Oct 15
LHR8:55 amLondon Heathrow
13h 36m
1 stop
HRL4:31 pmHarlingen Valley Intl
$910
Iberia
Aug 13
HRL4:58 pmHarlingen Valley Intl
13h 12m
1 stop
LHR12:10 pmLondon Heathrow
Sep 5
LHR2:25 pmLondon Heathrow
14h 29m
1 stop
HRL10:54 pmHarlingen Valley Intl
$1,003

United Airlines flights from Harlingen to London Heathrow Airport

Our best United Airlines deals on Harlingen to London Heathrow Airport flight tickets
United Airlines
Oct 10
HRL5:18 pmHarlingen Valley Intl
22h 02m
2 stops
LHR9:20 pmLondon Heathrow
Oct 15
LHR6:55 amLondon Heathrow
20h 57m
2 stops
HRL9:52 pmHarlingen Valley Intl
$879
United Airlines
Oct 10
HRL5:18 pmHarlingen Valley Intl
32h 27m
1 stop
LHR7:45 amLondon Heathrow
Oct 15
LHR7:25 amLondon Heathrow
18h 08m
2 stops
HRL7:33 pmHarlingen Valley Intl
$880
United Airlines
Aug 11
HRL5:15 amHarlingen Valley Intl
19h 15m
2 stops
LHR6:30 amLondon Heathrow
Aug 25
LHR2:05 pmLondon Heathrow
37h 39m
2 stops
HRL9:44 pmHarlingen Valley Intl
$886

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated May 3, 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 8/11

5:54 am-9:00 am

1 stop21h 06m

London Heathrow

Tue 8/25

9:15 am-10:04 am

2 stops30h 49m

$877

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

5:18 pm-9:20 pm

2 stops22h 02m

London Heathrow

Thu 10/15

6:55 am-9:52 pm

2 stops20h 57m

$879

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

5:18 pm-7:45 am

1 stop32h 27m

London Heathrow

Thu 10/15

7:25 am-7:33 pm

2 stops18h 08m

$880

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/11

5:15 am-6:30 am

2 stops19h 15m

London Heathrow

Tue 8/25

2:05 pm-9:44 pm

2 stops37h 39m

$886

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Tue 8/11

2:00 pm-11:35 am

1 stop15h 35m

London Heathrow

Tue 8/25

10:00 am-9:44 pm

1 stop17h 44m

$903

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sat 10/10

8:03 pm-6:20 am

1 stop28h 17m

London Heathrow

Thu 10/15

8:55 am-4:31 pm

1 stop13h 36m

$910

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

5:15 am-10:00 am

2 stops22h 45m

London Heathrow

Sat 9/5

7:25 am-7:29 pm

2 stops18h 04m

$978
Quickest round-trip

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

HarlingenLondon

HRL - LHR

HRLLHR

Harlingen Valley Intl

Sun 5/17

5:18 pm-11:35 am

1 stop12h 17m

London Heathrow

Tue 6/2

7:25 am-7:49 pm

2 stops18h 24m

$1,118

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Harlingen to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Harlingen Valley Intl to London Heathrow?

Iberia and United Airlines are the most popular carriers operating from Harlingen Valley Intl to London Heathrow

What airlines fly to London Heathrow Airport?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Harlingen according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from Harlingen to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harlingen to London Heathrow Airport (HRL to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to London Heathrow Airport

Fastest flight time

12h 21m

Direct flights

None
The fastest flight from Harlingen to London Heathrow Airport takes 12h 21m
There are no direct flights from Harlingen to London Heathrow Airport. There are no popular flight routes from Harlingen to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Harlingen to London Heathrow Airport

  • How far is Harlingen Valley Intl to London Heathrow by plane?

    The straight-line distance from Harlingen Valley Intl to London Heathrow is 5112.7 mi. Flights usually cover this in 12h 21m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to London Heathrow Airport?

    Prices for flights from Harlingen Valley Intl Airport to London Heathrow Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Harlingen Valley Intl Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

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Cobham
Folkestone
Romford
Harrow

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Harlingen to London. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Harlingen to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Harlingen to London?

momondo helps you find the best flight between Harlingen and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Harlingen to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Harlingen. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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