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Cheap flights from San Juan to London from £200

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Juan to London departing on 4/5. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from San Juan to London

Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
13:35 - 10:20
SJU
-
LHR
15h 45m
1 stop
Virgin Atlantic Logo
19:45 - 22:00
LHR
-
SJU
31h 15m
2 stops
£466Virgin Atlantic
Wed, 9 Sep - Mon, 14 Sep
Virgin Atlantic Logo
07:15 - 10:20
SJU
-
LHR
22h 05m
1 stop
Virgin Atlantic Logo
13:25 - 23:13
LHR
-
SJU
14h 48m
1 stop
£470Virgin Atlantic
Wed, 22 Apr - Wed, 29 Apr
Virgin Atlantic Logo
17:41 - 13:15
SJU
-
LHR
14h 34m
1 stop
Virgin Atlantic Logo
12:50 - 23:44
LHR
-
SJU
15h 54m
1 stop
£471Virgin Atlantic
Thu, 24 Sep - Wed, 30 Sep
Virgin Atlantic Logo
07:15 - 06:20
SJU
-
LHR
18h 05m
1 stop
Virgin Atlantic Logo
09:20 - 20:24
LHR
-
SJU
16h 04m
1 stop
£472Virgin Atlantic
Wed, 22 Apr - Wed, 29 Apr
Virgin Atlantic Logo
12:55 - 07:15
SJU
-
LHR
13h 20m
1 stop
Virgin Atlantic Logo
09:20 - 20:30
LHR
-
SJU
16h 10m
1 stop
£477Virgin Atlantic
Tue, 5 May - Thu, 14 May
Virgin Atlantic Logo
07:30 - 06:25
SJU
-
LHR
17h 55m
1 stop
Virgin Atlantic Logo
08:55 - 22:00
LHR
-
SJU
18h 05m
2 stops
£516Virgin Atlantic
Thu, 24 Sep - Mon, 28 Sep
Virgin Atlantic Logo
07:00 - 06:20
SJU
-
LHR
18h 20m
1 stop
Virgin Atlantic Logo
12:50 - 12:08
LHR
-
SJU
28h 18m
1 stop
£520Virgin Atlantic
Wed, 12 Aug - Wed, 26 Aug
Virgin Atlantic Logo
18:00 - 12:10
SJU
-
LHR
13h 10m
1 stop
Virgin Atlantic Logo
11:15 - 20:30
LHR
-
SJU
14h 15m
1 stop
£527Virgin Atlantic
Thu, 7 May - Sun, 24 May
Virgin Atlantic Logo
13:16 - 08:50
SJU
-
LHR
14h 34m
1 stop
Virgin Atlantic Logo
11:15 - 20:30
LHR
-
SJU
14h 15m
1 stop
£529Virgin Atlantic
Thu, 7 May - Sun, 24 May
KLM Logo
14:45 - 13:15
SJU
-
LHR
17h 30m
1 stop
KLM Logo
18:35 - 23:35
LHR
-
SJU
34h 00m
1 stop
£533KLM
Thu, 23 Apr - Sat, 9 May

Delta flights from San Juan to London Heathrow Airport

Our best Delta deals on San Juan to London Heathrow Airport flight tickets
Delta
18 Apr
SJU16:10San Juan Luis Munoz Marin Intl
15h 55m
1 stop
LHR13:05London Heathrow
26 Apr
LHR08:40London Heathrow
20h 19m
2 stops
SJU23:59San Juan Luis Munoz Marin Intl
£536
Delta
30 Apr
SJU06:15San Juan Luis Munoz Marin Intl
19h 10m
1 stop
LHR06:25London Heathrow
11 May
LHR09:55London Heathrow
18h 40m
2 stops
SJU23:35San Juan Luis Munoz Marin Intl
£537
Delta
30 Apr
SJU14:45San Juan Luis Munoz Marin Intl
16h 25m
2 stops
LHR12:10London Heathrow
11 May
LHR08:40London Heathrow
19h 55m
2 stops
SJU23:35San Juan Luis Munoz Marin Intl
£539

KLM flights from San Juan to London Heathrow Airport

Our best KLM deals on San Juan to London Heathrow Airport flight tickets
KLM
23 Apr
SJU14:45San Juan Luis Munoz Marin Intl
17h 30m
1 stop
LHR13:15London Heathrow
9 May
LHR18:35London Heathrow
34h 00m
1 stop
SJU23:35San Juan Luis Munoz Marin Intl
£533
KLM
23 Apr
SJU14:45San Juan Luis Munoz Marin Intl
15h 35m
1 stop
LHR11:20London Heathrow
9 May
LHR09:20London Heathrow
16h 10m
1 stop
SJU20:30San Juan Luis Munoz Marin Intl
£534
KLM
22 Apr
SJU14:45San Juan Luis Munoz Marin Intl
15h 35m
1 stop
LHR11:20London Heathrow
29 Apr
LHR11:20London Heathrow
17h 39m
1 stop
SJU23:59San Juan Luis Munoz Marin Intl
£535

momondo Fare Finder

 
Customise your flight search to find flights from San Juan 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 279,928 searches. Data last updated 8 April 2026.
Use the filters below to find and compare flights from San Juan to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 9/9

13:35-10:20

1 stop15h 45m

London Heathrow

Mon 14/9

19:45-22:00

2 stops31h 15m

£466

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

07:15-10:20

1 stop22h 05m

London Heathrow

Wed 29/4

13:25-23:13

1 stop14h 48m

£470

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 24/9

17:41-13:15

1 stop14h 34m

London Heathrow

Wed 30/9

12:50-23:44

1 stop15h 54m

£471

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

07:15-06:20

1 stop18h 05m

London Heathrow

Wed 29/4

09:20-20:24

1 stop16h 04m

£472

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 5/5

12:55-07:15

1 stop13h 20m

London Heathrow

Thu 14/5

09:20-20:30

1 stop16h 10m

£477

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 24/9

07:30-06:25

1 stop17h 55m

London Heathrow

Mon 28/9

08:55-22:00

2 stops18h 05m

£516

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

07:00-06:20

1 stop18h 20m

London Heathrow

Wed 26/8

12:50-12:08

1 stop28h 18m

£520
Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 7/5

18:00-12:10

1 stop13h 10m

London Heathrow

Sun 24/5

11:15-20:30

1 stop14h 15m

£527

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 7/5

13:16-08:50

1 stop14h 34m

London Heathrow

Sun 24/5

11:15-20:30

1 stop14h 15m

£529

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 23/4

14:45-13:15

1 stop17h 30m

London Heathrow

Sat 9/5

18:35-23:35

1 stop34h 00m

£533

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from San Juan 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 typical price of a round-trip flight between San Juan and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, September is the cheapest month to fly from San Juan to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £466. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Juan averaging around £525.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £639 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Juan for as low as £516 on momondo.

Cheap San Juan to London Heathrow Airport flight deals and tips

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

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from San Juan to London Heathrow Airport takes 13h 05m
There are no direct flights from San Juan to London Heathrow Airport. There are no popular flight routes from San Juan to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from San Juan to London Heathrow Airport

  • How far is San Juan to London Heathrow by plane?

    London Heathrow is 4182.0 mi away from San Juan. Flights usually cover this in 13h 05m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Juan to London Heathrow Airport?

    Prices for flights from San Juan to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from San Juan to London Heathrow Airport?

  • How old do you have to be to fly from San Juan to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan to London Heathrow Airport.

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

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from San Juan to London Heathrow Airport

Compare and see reviews for airlines that fly from San Juan to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom £579Free CancellationRating
7.2
2,922 reviews
Search JetBlue flights

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Juan.

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

All flight searches from San Juan to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Juan to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Juan to London.

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

Of course. momondo tracks the price of San Juan to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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