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Cheap flights from London to San Juan from £263

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 to San Juan departing on 19/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London to San Juan (LON-SJU)

Cheap return flights

Icelandair Logo
12:10 - 21:56LGW-SJU
38h 46m2 stops
Icelandair Logo
06:00 - 09:35SJU-LGW
22h 35m2 stops
£491Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
Icelandair Logo
08:15 - 22:32LHR-SJU
19h 17m1 stop
Icelandair Logo
06:00 - 09:30SJU-LHR
22h 30m1 stop
£492Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
JetBlue Logo
07:25 - 02:48LHR-SJU
23h 23m1 stop
JetBlue Logo
12:30 - 09:30SJU-LHR
17h 00m1 stop
£501JetBlue
Find Deal
Sat, 1 Nov - Tue, 18 Nov
JetBlue Logo
08:15 - 21:24LHR-SJU
18h 09m1 stop
JetBlue Logo
13:00 - 06:30SJU-LHR
12h 30m1 stop
£509JetBlue
Find Deal
Wed, 3 Sep - Thu, 18 Sep
Virgin Atlantic Logo
08:40 - 23:47LCY-SJU
20h 07m2 stops
Virgin Atlantic Logo
07:00 - 08:50SJU-LCY
20h 50m2 stops
£951Virgin Atlantic
Find Deal
Thu, 18 Sep - Thu, 25 Sep
Iberia Logo
07:50 - 19:55LCY-SJU
16h 05m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£975Iberia
Find Deal
Thu, 5 Feb - Sun, 15 Feb
British Airways Logo
11:25 - 23:40LCY-SJU
40h 15m2 stops
British Airways Logo
17:01 - 08:35SJU-LCY
35h 34m2 stops
£984British Airways
Find Deal
Sat, 10 Jan - Sat, 17 Jan
British Airways Logo
11:25 - 23:40LCY-SJU
40h 15m2 stops
British Airways Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£1,002British Airways
Find Deal
Sat, 10 Jan - Sun, 18 Jan
Iberia Logo
19:15 - 00:05LCY-SJU
32h 50m2 stops
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£1,036Iberia
Find Deal
Fri, 9 Jan - Sun, 18 Jan
Virgin Atlantic Logo
10:00 - 23:50LCY-SJU
17h 50m2 stops
Virgin Atlantic Logo
07:00 - 13:15SJU-LCY
26h 15m2 stops
£1,895Virgin Atlantic
Find Deal
Sat, 13 Dec - Sat, 20 Dec

Icelandair flights from London to San Juan Luis Munoz Marin Intl Airport

Our best Icelandair deals on London to San Juan Luis Munoz Marin Intl Airport flight tickets
Icelandair
9 Sept
LGW12:10London Gatwick
38h 46m
2 stops
SJU21:56San Juan Luis Munoz Marin Intl
24 Sept
SJU06:00San Juan Luis Munoz Marin Intl
22h 35m
2 stops
LGW09:35London Gatwick
£491
Find similar
Icelandair
9 Sept
LHR08:15London Heathrow
19h 17m
1 stop
SJU22:32San Juan Luis Munoz Marin Intl
24 Sept
SJU06:00San Juan Luis Munoz Marin Intl
22h 30m
1 stop
LHR09:30London Heathrow
£492
Find similar
Icelandair
9 Sept
LHR08:15London Heathrow
19h 17m
1 stop
SJU22:32San Juan Luis Munoz Marin Intl
24 Sept
SJU06:00San Juan Luis Munoz Marin Intl
22h 30m
1 stop
LHR09:30London Heathrow
£494
Find similar

TAP AIR PORTUGAL flights from London to San Juan Luis Munoz Marin Intl Airport

Our best TAP AIR PORTUGAL deals on London to San Juan Luis Munoz Marin Intl Airport flight tickets
TAP AIR PORTUGAL
6 Nov
LGW16:00London Gatwick
39h 17m
2 stops
SJU03:17San Juan Luis Munoz Marin Intl
15 Nov
SJU09:20San Juan Luis Munoz Marin Intl
31h 20m
2 stops
LGW20:40London Gatwick
£594
Find similar
TAP AIR PORTUGAL
6 Nov
LGW10:40London Gatwick
20h 37m
2 stops
SJU03:17San Juan Luis Munoz Marin Intl
15 Nov
SJU09:20San Juan Luis Munoz Marin Intl
31h 20m
2 stops
LGW20:40London Gatwick
£595
Find similar
TAP AIR PORTUGAL
7 Nov
LGW16:40London Gatwick
38h 37m
2 stops
SJU03:17San Juan Luis Munoz Marin Intl
15 Nov
SJU09:20San Juan Luis Munoz Marin Intl
31h 20m
2 stops
LGW20:40London Gatwick
£597
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London 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 21 August 2025.
Use the filters below to find and compare flights from London to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 9/9

12:10-21:56

2 stops38h 46m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:35

2 stops22h 35m

£491

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:30

1 stop22h 30m

£492

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 1/11

07:25-02:48

1 stop23h 23m

San Juan Luis Munoz Marin Intl

Tue 18/11

12:30-09:30

1 stop17h 00m

£501

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Thu 18/9

13:00-06:30

1 stop12h 30m

£509

LondonSan Juan

LCY - SJU

LCYSJU

London City

Thu 18/9

08:40-23:47

2 stops20h 07m

San Juan Luis Munoz Marin Intl

Thu 25/9

07:00-08:50

2 stops20h 50m

£951

LondonSan Juan

LCY - SJU

LCYSJU

London City

Thu 5/2

07:50-19:55

1 stop16h 05m

San Juan Luis Munoz Marin Intl

Sun 15/2

21:25-14:35

1 stop13h 10m

£975

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 10/1

11:25-23:40

2 stops40h 15m

San Juan Luis Munoz Marin Intl

Sat 17/1

17:01-08:35

2 stops35h 34m

£984

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 10/1

11:25-23:40

2 stops40h 15m

San Juan Luis Munoz Marin Intl

Sun 18/1

21:25-14:35

1 stop13h 10m

£1,002

LondonSan Juan

LCY - SJU

LCYSJU

London City

Fri 9/1

19:15-00:05

2 stops32h 50m

San Juan Luis Munoz Marin Intl

Sun 18/1

21:25-14:35

1 stop13h 10m

£1,036

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 13/12

10:00-23:50

2 stops17h 50m

San Juan Luis Munoz Marin Intl

Sat 20/12

07:00-13:15

2 stops26h 15m

£1,895

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and San Juan Luis Munoz Marin Intl Airport?

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel during the month of September, then book flights to San Juan Luis Munoz Marin Intl Airport from London during November instead. Flights to San Juan Luis Munoz Marin Intl Airport in November, while not as cheap as those in September, still average around £553.

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 to San Juan Luis Munoz Marin Intl Airport is on a Monday when prices can be found for as low as £528. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London to San Juan Luis Munoz Marin Intl Airport for around £643.

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 to San Juan Luis Munoz Marin Intl Airport when you can find flight prices for as low as £584. 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 £834 on average. Flights to San Juan Luis Munoz Marin Intl Airport from London in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around £647 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 Luis Munoz Marin Intl Airport from London for as low as £508 on momondo.

How have London to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of August 2025, prices for London to San Juan Luis Munoz Marin Intl Airport flights are approximately 60% cheaper when compared to flights at the same time last year.

When to book flights from London 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 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 to San Juan Luis Munoz Marin Intl Airport (LON to SJU) flight deals and tips

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

Direct flights

None
There are no direct flights from London to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from London to San Juan Luis Munoz Marin Intl Airport.
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  • How far is London to San Juan Luis Munoz Marin Intl by plane?

    The straight-line distance from London to San Juan Luis Munoz Marin Intl is 4193.3 mi. By plane, this route typically takes 12h 45m.

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

    Prices for flights from London to San Juan Luis Munoz Marin Intl Airport are updated daily.

  • How many operators does momondo search for flights from London to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from London 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 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 travel and health documents you'll need for your trip to San Juan Luis Munoz Marin Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from London to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from London to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £343Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £423Free CancellationRating
7.0
528 reviews
Search Icelandair flights
JetBluePriceFrom £453Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
FinnairPriceFrom £453Free CancellationRating
7.6
1,320 reviews
Search Finnair flights
IberiaPriceFrom £509Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
British AirwaysPriceFrom £554Free CancellationRating
6.7
7,291 reviews
Search British Airways flights

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 you have performed a search for London to San Juan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to San Juan from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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