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Cheap flights from London Stansted Airport to San Juan from £211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to San Juan departing on 9/2. 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 London Stansted Airport to San Juan

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:00 - 20:24
STN
-
SJU
36h 24m2 stops
Multiple Airlines Logo
18:10 - 20:15
SJU
-
STN
22h 05m1 stop
£450Multiple Airlines
Mon, 9 Feb - Tue, 17 Feb
Multiple Airlines Logo
12:00 - 20:24
STN
-
SJU
36h 24m2 stops
Multiple Airlines Logo
21:25 - 13:30
SJU
-
STN
12h 05m1 stop
£505Multiple Airlines
Mon, 9 Feb - Thu, 19 Feb
Multiple Airlines Logo
08:05 - 11:35
STN
-
SJU
31h 30m2 stops
Multiple Airlines Logo
18:10 - 14:05
SJU
-
STN
15h 55m1 stop
£512Multiple Airlines
Fri, 13 Mar - Mon, 23 Mar
Multiple Airlines Logo
16:20 - 17:05
STN
-
SJU
28h 45m2 stops
Multiple Airlines Logo
18:10 - 14:05
SJU
-
STN
15h 55m1 stop
£519Multiple Airlines
Fri, 13 Mar - Mon, 16 Mar
Multiple Airlines Logo
05:55 - 11:35
STN
-
SJU
33h 40m2 stops
Multiple Airlines Logo
18:10 - 11:30
SJU
-
STN
13h 20m1 stop
£520Multiple Airlines
Wed, 11 Feb - Tue, 17 Feb
Multiple Airlines Logo
18:35 - 17:05
STN
-
SJU
26h 30m2 stops
Multiple Airlines Logo
06:00 - 22:20
SJU
-
STN
36h 20m3 stops
£526Multiple Airlines
Sat, 21 Feb - Sat, 28 Feb
Multiple Airlines Logo
18:25 - 22:32
STN
-
SJU
32h 07m2 stops
Multiple Airlines Logo
21:25 - 20:00
SJU
-
STN
18h 35m1 stop
£531Multiple Airlines
Fri, 27 Feb - Mon, 9 Mar
Multiple Airlines Logo
08:05 - 08:05
STN
-
SJU
28h 00m2 stops
Multiple Airlines Logo
21:25 - 07:45
SJU
-
STN
30h 20m1 stop
£550Multiple Airlines
Mon, 26 Jan - Sun, 8 Feb
Multiple Airlines Logo
15:00 - 17:05
STN
-
SJU
30h 05m2 stops
Multiple Airlines Logo
21:25 - 14:15
SJU
-
STN
12h 50m1 stop
£553Multiple Airlines
Fri, 20 Feb - Fri, 27 Feb
Multiple Airlines Logo
20:40 - 17:05
STN
-
SJU
24h 25m2 stops
Multiple Airlines Logo
21:25 - 14:35
SJU
-
STN
13h 10m1 stop
£557Multiple Airlines
Wed, 18 Feb - Thu, 26 Feb

momondo Fare Finder

 
Customise your flight search to find flights from London Stansted Airport 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 9 January 2026.
Use the filters below to find and compare flights from London Stansted Airport to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 9/2

12:00-20:24

2 stops36h 24m

San Juan Luis Munoz Marin Intl

Tue 17/2

18:10-20:15

1 stop22h 05m

£450

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 9/2

12:00-20:24

2 stops36h 24m

San Juan Luis Munoz Marin Intl

Thu 19/2

21:25-13:30

1 stop12h 05m

£505

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 13/3

08:05-11:35

2 stops31h 30m

San Juan Luis Munoz Marin Intl

Mon 23/3

18:10-14:05

1 stop15h 55m

£512

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 13/3

16:20-17:05

2 stops28h 45m

San Juan Luis Munoz Marin Intl

Mon 16/3

18:10-14:05

1 stop15h 55m

£519

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 11/2

05:55-11:35

2 stops33h 40m

San Juan Luis Munoz Marin Intl

Tue 17/2

18:10-11:30

1 stop13h 20m

£520

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 21/2

18:35-17:05

2 stops26h 30m

San Juan Luis Munoz Marin Intl

Sat 28/2

06:00-22:20

3 stops36h 20m

£526

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 27/2

18:25-22:32

2 stops32h 07m

San Juan Luis Munoz Marin Intl

Mon 9/3

21:25-20:00

1 stop18h 35m

£531

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 26/1

08:05-08:05

2 stops28h 00m

San Juan Luis Munoz Marin Intl

Sun 8/2

21:25-07:45

1 stop30h 20m

£550

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 20/2

15:00-17:05

2 stops30h 05m

San Juan Luis Munoz Marin Intl

Fri 27/2

21:25-14:15

1 stop12h 50m

£553

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 18/2

20:40-17:05

2 stops24h 25m

San Juan Luis Munoz Marin Intl

Thu 26/2

21:25-14:35

1 stop13h 10m

£557

Flights are sorted by cheapest return flights first.

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

Cheap London Stansted Airport to San Juan flight deals and tips

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

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from London Stansted Airport to San Juan takes 13h 50m
There are no direct flights from London Stansted Airport to San Juan. There are no popular flight routes from London Stansted Airport to San Juan.
Search flight deals

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

    The distance between London Stansted and San Juan is about 4214.9 mi. Flights usually cover this in 13h 50m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Stansted Airport to San Juan were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Stansted Airport to San Juan.

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

    The required travel and health documents for your San Juan trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from London Stansted Airport to San Juan?

    Search flight deals from London Stansted Airport to San Juan. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from London Stansted Airport to San Juan with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

Finding the right flight to San Juan from London 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 London to San Juan with flexible booking policies on momondo?

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

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

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 London to San Juan.

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

Of course. momondo tracks the price of London to San Juan 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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Sun 8/2
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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