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Cheap flights from London Stansted Airport to San Juan from £254

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 17/4. 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 London Stansted Airport to San Juan

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
05:50 - 08:05
STN
-
SJU
31h 15m
2 stops
Multiple Airlines Logo
10:25 - 22:50
SJU
-
STN
31h 25m
3 stops
£649Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
20:45 - 22:14
STN
-
SJU
30h 29m
2 stops
Multiple Airlines Logo
17:25 - 11:40
SJU
-
STN
13h 15m
1 stop
£688Multiple Airlines
Mon, 13 Apr - Tue, 12 May
Multiple Airlines Logo
10:00 - 19:05
STN
-
SJU
14h 05m
1 stop
Multiple Airlines Logo
11:30 - 07:30
SJU
-
STN
39h 00m
2 stops
£700Multiple Airlines
Thu, 23 Apr - Sun, 3 May
Multiple Airlines Logo
08:50 - 23:58
STN
-
SJU
44h 08m
3 stops
Multiple Airlines Logo
10:00 - 22:40
SJU
-
STN
31h 40m
3 stops
£704Multiple Airlines
Tue, 31 Mar - Tue, 7 Apr
Multiple Airlines Logo
20:45 - 14:41
STN
-
SJU
46h 56m
2 stops
Multiple Airlines Logo
21:20 - 15:30
SJU
-
STN
13h 10m
1 stop
£725Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
18:25 - 22:14
STN
-
SJU
32h 49m
2 stops
Multiple Airlines Logo
20:40 - 17:25
SJU
-
STN
15h 45m
1 stop
£742Multiple Airlines
Fri, 17 Apr - Tue, 28 Apr
Multiple Airlines Logo
08:20 - 23:58
STN
-
SJU
20h 38m
3 stops
Multiple Airlines Logo
07:00 - 00:30
SJU
-
STN
36h 30m
3 stops
£787Multiple Airlines
Wed, 1 Apr - Thu, 9 Apr
Multiple Airlines Logo
08:40 - 19:05
STN
-
SJU
15h 25m
1 stop
Multiple Airlines Logo
20:40 - 17:25
SJU
-
STN
15h 45m
1 stop
£804Multiple Airlines
Fri, 17 Apr - Tue, 28 Apr
Multiple Airlines Logo
09:35 - 19:55
STN
-
SJU
14h 20m
1 stop
Multiple Airlines Logo
20:40 - 21:05
SJU
-
STN
19h 25m
1 stop
£809Multiple Airlines
Mon, 16 Mar - Tue, 31 Mar
Multiple Airlines Logo
07:40 - 18:55
STN
-
SJU
39h 15m
3 stops
Multiple Airlines Logo
11:03 - 16:05
SJU
-
STN
25h 02m
3 stops
£812Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar

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 3 March 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 13/4

05:50-08:05

2 stops31h 15m

San Juan Luis Munoz Marin Intl

Mon 20/4

10:25-22:50

3 stops31h 25m

£649

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 13/4

20:45-22:14

2 stops30h 29m

San Juan Luis Munoz Marin Intl

Tue 12/5

17:25-11:40

1 stop13h 15m

£688

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 23/4

10:00-19:05

1 stop14h 05m

San Juan Luis Munoz Marin Intl

Sun 3/5

11:30-07:30

2 stops39h 00m

£700

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 31/3

08:50-23:58

3 stops44h 08m

San Juan Luis Munoz Marin Intl

Tue 7/4

10:00-22:40

3 stops31h 40m

£704

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 13/4

20:45-14:41

2 stops46h 56m

San Juan Luis Munoz Marin Intl

Mon 20/4

21:20-15:30

1 stop13h 10m

£725

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 17/4

18:25-22:14

2 stops32h 49m

San Juan Luis Munoz Marin Intl

Tue 28/4

20:40-17:25

1 stop15h 45m

£742

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 1/4

08:20-23:58

3 stops20h 38m

San Juan Luis Munoz Marin Intl

Thu 9/4

07:00-00:30

3 stops36h 30m

£787

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 17/4

08:40-19:05

1 stop15h 25m

San Juan Luis Munoz Marin Intl

Tue 28/4

20:40-17:25

1 stop15h 45m

£804

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 16/3

09:35-19:55

1 stop14h 20m

San Juan Luis Munoz Marin Intl

Tue 31/3

20:40-21:05

1 stop19h 25m

£809

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 18/3

07:40-18:55

3 stops39h 15m

San Juan Luis Munoz Marin Intl

Wed 25/3

11:03-16:05

3 stops25h 02m

£812

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

14h 25m

Direct flights

None
The fastest flight from London Stansted Airport to San Juan takes 14h 25m
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 14h 25m, 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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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