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Cheap flights from London Stansted Airport to San Juan from £323

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 7/2. 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
09:35 - 19:55STN-SJU
14h 20m1 stop
Multiple Airlines Logo
21:25 - 14:05SJU-STN
12h 40m1 stop
£637Multiple Airlines
Find Deal
Mon, 2 Feb - Mon, 16 Feb
Multiple Airlines Logo
18:25 - 11:35STN-SJU
21h 10m2 stops
Multiple Airlines Logo
18:30 - 20:00SJU-STN
21h 30m2 stops
£662Multiple Airlines
Find Deal
Fri, 13 Mar - Mon, 23 Mar
Multiple Airlines Logo
11:55 - 17:05STN-SJU
33h 10m2 stops
Multiple Airlines Logo
18:30 - 20:00SJU-STN
21h 30m2 stops
£677Multiple Airlines
Find Deal
Sun, 1 Feb - Mon, 9 Feb
Multiple Airlines Logo
16:20 - 11:35STN-SJU
23h 15m2 stops
Multiple Airlines Logo
18:30 - 19:30SJU-STN
21h 00m2 stops
£681Multiple Airlines
Find Deal
Fri, 13 Mar - Sun, 22 Mar
Multiple Airlines Logo
20:25 - 17:05STN-SJU
24h 40m2 stops
Multiple Airlines Logo
18:30 - 23:35SJU-STN
25h 05m2 stops
£682Multiple Airlines
Find Deal
Tue, 17 Mar - Sat, 21 Mar
Multiple Airlines Logo
16:20 - 11:35STN-SJU
23h 15m2 stops
Multiple Airlines Logo
18:10 - 11:30SJU-STN
13h 20m1 stop
£685Multiple Airlines
Find Deal
Fri, 13 Mar - Sun, 22 Mar
Multiple Airlines Logo
21:20 - 01:42STN-SJU
32h 22m2 stops
Multiple Airlines Logo
21:25 - 14:05SJU-STN
12h 40m1 stop
£685Multiple Airlines
Find Deal
Thu, 22 Jan - Mon, 9 Feb
Multiple Airlines Logo
21:20 - 01:42STN-SJU
32h 22m2 stops
Multiple Airlines Logo
21:25 - 13:50SJU-STN
12h 25m1 stop
£688Multiple Airlines
Find Deal
Thu, 22 Jan - Tue, 3 Feb
Multiple Airlines Logo
14:25 - 11:35STN-SJU
25h 10m2 stops
Multiple Airlines Logo
21:25 - 14:05SJU-STN
12h 40m1 stop
£690Multiple Airlines
Find Deal
Mon, 2 Feb - Mon, 16 Feb
Multiple Airlines Logo
16:45 - 17:05STN-SJU
28h 20m2 stops
Multiple Airlines Logo
16:45 - 20:00SJU-STN
23h 15m2 stops
£701Multiple Airlines
Find Deal
Mon, 2 Feb - Mon, 16 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 13 November 2025.
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 2/2

09:35-19:55

1 stop14h 20m

San Juan Luis Munoz Marin Intl

Mon 16/2

21:25-14:05

1 stop12h 40m

£637

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 13/3

18:25-11:35

2 stops21h 10m

San Juan Luis Munoz Marin Intl

Mon 23/3

18:30-20:00

2 stops21h 30m

£662

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 1/2

11:55-17:05

2 stops33h 10m

San Juan Luis Munoz Marin Intl

Mon 9/2

18:30-20:00

2 stops21h 30m

£677

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 13/3

16:20-11:35

2 stops23h 15m

San Juan Luis Munoz Marin Intl

Sun 22/3

18:30-19:30

2 stops21h 00m

£681

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 17/3

20:25-17:05

2 stops24h 40m

San Juan Luis Munoz Marin Intl

Sat 21/3

18:30-23:35

2 stops25h 05m

£682

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 13/3

16:20-11:35

2 stops23h 15m

San Juan Luis Munoz Marin Intl

Sun 22/3

18:10-11:30

1 stop13h 20m

£685

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 22/1

21:20-01:42

2 stops32h 22m

San Juan Luis Munoz Marin Intl

Mon 9/2

21:25-14:05

1 stop12h 40m

£685

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 22/1

21:20-01:42

2 stops32h 22m

San Juan Luis Munoz Marin Intl

Tue 3/2

21:25-13:50

1 stop12h 25m

£688

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 2/2

14:25-11:35

2 stops25h 10m

San Juan Luis Munoz Marin Intl

Mon 16/2

21:25-14:05

1 stop12h 40m

£690

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 2/2

16:45-17:05

2 stops28h 20m

San Juan Luis Munoz Marin Intl

Mon 16/2

16:45-20:00

2 stops23h 15m

£701

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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

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?

The cheapest day to depart on your flight to San Juan is on a Monday when prices can be found for as low as £542. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around £660.

What is the cheapest time of day to depart on your flight to San Juan?

In the morning is the cheapest time of day to fly from London Stansted Airport to San Juan when you can find flight prices for as low as £599. Flying to San Juan in the morning is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive, with an average ticket price of £856.

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

Direct flights

None
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.
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  • 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 05m, 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.

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