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Cheap flights from the United Kingdom to San Juan from £213

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to San Juan departing on 15/4. 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

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Find the cheapest flights from the United Kingdom to San Juan

Recent return flight deals from the United Kingdom to San Juan

Enter your travel dates to find the best prices.
JetBlue Logo
08:15 - 21:01
LHR
-
SJU
17h 46m
1 stop
JetBlue Logo
13:00 - 06:30
SJU
-
LHR
12h 30m
1 stop
£394JetBlue
mar., 5 mai - jeu., 7 mai
JetBlue Logo
07:25 - 22:31
LHR
-
SJU
19h 06m
1 stop
JetBlue Logo
23:59 - 22:00
SJU
-
LHR
18h 01m
1 stop
£399JetBlue
mar., 24 févr. - ven., 27 févr.
JetBlue Logo
07:25 - 22:31
LHR
-
SJU
19h 06m
1 stop
JetBlue Logo
04:15 - 21:40
SJU
-
LHR
13h 25m
1 stop
£409JetBlue
mar., 24 févr. - mer., 11 mars
Multiple Airlines Logo
13:05 - 10:26
LGW
-
SJU
26h 21m
1 stop
Multiple Airlines Logo
01:21 - 06:20
SJU
-
LGW
23h 59m
1 stop
£462Multiple Airlines
ven., 17 avr. - ven., 24 avr.
Multiple Airlines Logo
11:55 - 19:06
LGW
-
SJU
35h 11m
2 stops
Multiple Airlines Logo
10:00 - 10:55
SJU
-
LGW
20h 55m
2 stops
£465Multiple Airlines
mar., 10 mars - mar., 17 mars
Aer Lingus Logo
09:10 - 22:12
BHX
-
SJU
18h 02m
2 stops
Aer Lingus Logo
05:01 - 19:55
SJU
-
BHX
33h 54m
2 stops
£795Aer Lingus
mar., 12 mai - mer., 20 mai
Aer Lingus Logo
09:10 - 22:12
BHX
-
SJU
18h 02m
2 stops
Aer Lingus Logo
08:10 - 08:40
SJU
-
BHX
19h 30m
2 stops
£840Aer Lingus
mar., 12 mai - ven., 22 mai
British Airways Logo
06:35 - 19:55
GLA
-
SJU
17h 20m
2 stops
British Airways Logo
16:50 - 16:35
SJU
-
GLA
19h 45m
2 stops
£1,013British Airways
jeu., 26 févr. - lun., 2 mars
British Airways Logo
06:30 - 22:58
NCL
-
SJU
20h 28m
2 stops
British Airways Logo
18:01 - 14:55
SJU
-
NCL
16h 54m
2 stops
£1,015British Airways
jeu., 19 mars - lun., 23 mars
Delta Logo
05:55 - 22:17
BHX
-
SJU
21h 22m
2 stops
Delta Logo
13:30 - 12:40
SJU
-
BHX
18h 10m
2 stops
£1,044Delta
mar., 12 mai - mer., 20 mai

JetBlue flights from United Kingdom to San Juan

Our best JetBlue deals on United Kingdom to San Juan flight tickets
JetBlue
5 May
LHR08:15London Heathrow
17h 46m
1 stop
SJU21:01San Juan Luis Munoz Marin Intl
7 May
SJU13:00San Juan Luis Munoz Marin Intl
12h 30m
1 stop
LHR06:30London Heathrow
£394
JetBlue
24 Feb
LHR07:25London Heathrow
19h 06m
1 stop
SJU22:31San Juan Luis Munoz Marin Intl
27 Feb
SJU23:59San Juan Luis Munoz Marin Intl
18h 01m
1 stop
LHR22:00London Heathrow
£399
JetBlue
24 Feb
LHR07:25London Heathrow
19h 06m
1 stop
SJU22:31San Juan Luis Munoz Marin Intl
11 Mar
SJU04:15San Juan Luis Munoz Marin Intl
13h 25m
1 stop
LHR21:40London Heathrow
£409

Iberia flights from United Kingdom to San Juan

Our best Iberia deals on United Kingdom to San Juan flight tickets
Iberia
19 Feb
LHR10:45London Heathrow
13h 10m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
4 Mar
SJU18:10San Juan Luis Munoz Marin Intl
12h 25m
1 stop
LHR10:35London Heathrow
£836
Iberia
19 Feb
LHR09:15London Heathrow
14h 40m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
4 Mar
SJU18:10San Juan Luis Munoz Marin Intl
18h 25m
1 stop
LHR16:35London Heathrow
£888
Iberia
25 Feb
LCY07:50London City
12h 45m
1 stop
SJU16:35San Juan Luis Munoz Marin Intl
5 Mar
SJU18:10San Juan Luis Munoz Marin Intl
15h 55m
1 stop
LCY14:05London City
£922

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to San Juan 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 10 février 2026.
Use the filters below to find and compare flights from the United Kingdom to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

mar. 5/5

08:15-21:01

1 stop17h 46m

San Juan Luis Munoz Marin Intl

jeu. 7/5

13:00-06:30

1 stop12h 30m

£394

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

mar. 24/2

07:25-22:31

1 stop19h 06m

San Juan Luis Munoz Marin Intl

ven. 27/2

23:59-22:00

1 stop18h 01m

£399

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

mar. 24/2

07:25-22:31

1 stop19h 06m

San Juan Luis Munoz Marin Intl

mer. 11/3

04:15-21:40

1 stop13h 25m

£409

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

ven. 17/4

13:05-10:26

1 stop26h 21m

San Juan Luis Munoz Marin Intl

ven. 24/4

01:21-06:20

1 stop23h 59m

£462

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

mar. 10/3

11:55-19:06

2 stops35h 11m

San Juan Luis Munoz Marin Intl

mar. 17/3

10:00-10:55

2 stops20h 55m

£465

BirminghamSan Juan

BHX - SJU

BHXSJU

Birmingham

mar. 12/5

09:10-22:12

2 stops18h 02m

San Juan Luis Munoz Marin Intl

mer. 20/5

05:01-19:55

2 stops33h 54m

£795

BirminghamSan Juan

BHX - SJU

BHXSJU

Birmingham

mar. 12/5

09:10-22:12

2 stops18h 02m

San Juan Luis Munoz Marin Intl

ven. 22/5

08:10-08:40

2 stops19h 30m

£840

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

jeu. 26/2

06:35-19:55

2 stops17h 20m

San Juan Luis Munoz Marin Intl

lun. 2/3

16:50-16:35

2 stops19h 45m

£1,013

Newcastle upon TyneSan Juan

NCL - SJU

NCLSJU

Newcastle upon Tyne

jeu. 19/3

06:30-22:58

2 stops20h 28m

San Juan Luis Munoz Marin Intl

lun. 23/3

18:01-14:55

2 stops16h 54m

£1,015

BirminghamSan Juan

BHX - SJU

BHXSJU

Birmingham

mar. 12/5

05:55-22:17

2 stops21h 22m

San Juan Luis Munoz Marin Intl

mer. 20/5

13:30-12:40

2 stops18h 10m

£1,044

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from United Kingdom to San Juan

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 month to fly to San Juan?

The cheapest month to fly to San Juan from United Kingdom is in September. Flight prices, which tend to average around £532, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to San Juan from United Kingdom during February instead. Flights to San Juan in February, while not as cheap as those in September, still average around £536.

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around £649 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from United Kingdom for as low as £514 on momondo.

Cheap United Kingdom to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to San Juan

Fastest flight time

12h 35m

Direct flights

None
The fastest flight from United Kingdom to San Juan takes 12h 35m
There are no direct flights from United Kingdom to San Juan. There are no popular flight routes from United Kingdom to San Juan.
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to San Juan?

    Prices for flights from United Kingdom to San Juan are refreshed on a daily basis.

  • How many operators does momondo search for flights from United Kingdom to San Juan?

  • How old do you have to be to fly from United Kingdom to San Juan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The necessary travel and health documents for your San Juan 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 United Kingdom to San Juan

Compare and see reviews for airlines that fly from United Kingdom to San Juan with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £338Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £408Free CancellationRating
7.2
2,894 reviews
Search JetBlue flights
FinnairPriceFrom £424Free CancellationRating
7.6
1,360 reviews
Search Finnair flights
IcelandairPriceFrom £497Free CancellationRating
7.1
611 reviews
Search Icelandair flights
British AirwaysPriceFrom £530Free CancellationRating
6.7
7,724 reviews
Search British Airways flights
IberiaPriceFrom £545Free CancellationRating
7.0
3,112 reviews
Search Iberia flights
Aer LingusPriceFrom £646Free CancellationRating
7.2
1,447 reviews
Search Aer Lingus flights

Why use momondo?

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

Finding the right flight to San Juan from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to San Juan from United Kingdom with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from United Kingdom.

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

If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from United Kingdom and alert you when they change.

An easier way to manage your San Juan trip

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Luis Munoz Marin Intl Airport