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Cheap flights from London Stansted Airport to San Juan from £339

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 13/9. 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

Logo
06:45 - 15:05STN-SJU
13h 20m1 stop
Logo
20:20 - 21:20SJU-STN
20h 00m1 stop
£627
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Sun, 14 Sep - Mon, 22 Sep
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06:20 - 15:10STN-SJU
13h 50m1 stop
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16:55 - 11:50SJU-STN
13h 55m1 stop
£630
Find Deal
Tue, 23 Sep - Wed, 1 Oct
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06:45 - 14:05STN-SJU
36h 20m3 stops
Logo
07:05 - 21:15SJU-STN
33h 10m3 stops
£679
Find Deal
Sun, 14 Sep - Sun, 21 Sep
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11:40 - 00:43STN-SJU
18h 03m2 stops
Logo
07:05 - 21:15SJU-STN
33h 10m3 stops
£716
Find Deal
Sun, 14 Sep - Sun, 21 Sep
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06:15 - 18:30STN-SJU
17h 15m1 stop
Logo
20:20 - 21:05SJU-STN
19h 45m1 stop
£739
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Fri, 29 Aug - Fri, 5 Sep
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06:05 - 08:25STN-SJU
31h 20m2 stops
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18:15 - 21:20SJU-STN
22h 05m2 stops
£742
Find Deal
Mon, 8 Sep - Mon, 22 Sep
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06:45 - 12:40STN-SJU
34h 55m3 stops
Logo
06:44 - 10:40SJU-STN
22h 56m3 stops
£744
Find Deal
Sun, 7 Sep - Sun, 21 Sep
Logo
06:45 - 12:40STN-SJU
34h 55m3 stops
Logo
07:05 - 10:40SJU-STN
22h 35m2 stops
£747
Find Deal
Sun, 7 Sep - Sun, 21 Sep
Logo
11:40 - 00:43STN-SJU
18h 03m2 stops
Logo
18:15 - 21:20SJU-STN
22h 05m2 stops
£757
Find Deal
Sun, 14 Sep - Mon, 22 Sep
Logo
11:40 - 00:43STN-SJU
18h 03m2 stops
Logo
07:05 - 10:40SJU-STN
22h 35m2 stops
£767
Find Deal
Sun, 14 Sep - Sun, 21 Sep

momondo Fare Finder

 
Customise your flight search to find flights from London Stansted Airport to San Juan Luis Munoz Marin Intl 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 1 August 2025.
Use the filters below to find and compare flights from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 14/9

06:45-15:05

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Mon 22/9

20:20-21:20

1 stop20h 00m

£627

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 23/9

06:20-15:10

1 stop13h 50m

San Juan Luis Munoz Marin Intl

Wed 1/10

16:55-11:50

1 stop13h 55m

£630

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 14/9

06:45-14:05

3 stops36h 20m

San Juan Luis Munoz Marin Intl

Sun 21/9

07:05-21:15

3 stops33h 10m

£679

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 14/9

11:40-00:43

2 stops18h 03m

San Juan Luis Munoz Marin Intl

Sun 21/9

07:05-21:15

3 stops33h 10m

£716

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 29/8

06:15-18:30

1 stop17h 15m

San Juan Luis Munoz Marin Intl

Fri 5/9

20:20-21:05

1 stop19h 45m

£739

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 8/9

06:05-08:25

2 stops31h 20m

San Juan Luis Munoz Marin Intl

Mon 22/9

18:15-21:20

2 stops22h 05m

£742

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 7/9

06:45-12:40

3 stops34h 55m

San Juan Luis Munoz Marin Intl

Sun 21/9

06:44-10:40

3 stops22h 56m

£744

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 7/9

06:45-12:40

3 stops34h 55m

San Juan Luis Munoz Marin Intl

Sun 21/9

07:05-10:40

2 stops22h 35m

£747

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 14/9

11:40-00:43

2 stops18h 03m

San Juan Luis Munoz Marin Intl

Mon 22/9

18:15-21:20

2 stops22h 05m

£757

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 14/9

11:40-00:43

2 stops18h 03m

San Juan Luis Munoz Marin Intl

Sun 21/9

07:05-10:40

2 stops22h 35m

£767

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 London Stansted Airport to San Juan Luis Munoz Marin Intl 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 day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest day to depart from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport is on a Monday when prices can be found for as low as £538. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport for around £655.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

In the morning is the cheapest time of day to fly from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport when you can find flight prices for as low as £594. Flying to San Juan Luis Munoz Marin Intl Airport in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £849 on average. Flights to San Juan Luis Munoz Marin Intl Airport from London Stansted Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

When to book flights from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Stansted Airport to San Juan Luis Munoz Marin Intl Airport (STN to SJU) flight deals and tips

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

Best price found

£339

Fastest flight time

13h 20m

Direct flights

None
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from London Stansted Airport in the past 72 hours is £339. The best return flight deal from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is £627.
The fastest flight from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport takes 13h 20m
There are no direct flights from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport. Popular non-direct route for this connection is London Stansted Airport - San Juan Luis Munoz Marin Intl Airport.
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  • How far is London Stansted to San Juan Luis Munoz Marin Intl by plane?

    The distance between London Stansted and San Juan Luis Munoz Marin Intl is about 4211.9 mi. A reasonable flight in good conditions will take 13h 20m.

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

    Prices for flights from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport were last updated today.

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

    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 Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The necessary travel and health documents for your San Juan Luis Munoz Marin Intl 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.

Travelling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Rio Grande
Carolina
Fajardo
Dorado

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to San Juan for you.

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

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

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

Once all potential London to San Juan flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London 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 London and alert you when they change.

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