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Flights to San Juan

£301 Cheap flights to San Juan

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Juan departing on 9/12. 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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Find the cheapest flights from the United Kingdom to San Juan

Cheap return flights

Logo
14:00 - 14:11LGW-SJU
29h 11m1 stop
Logo
15:19 - 10:00SJU-LGW
13h 41m1 stop
£458
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Mon, 13 Oct - Wed, 15 Oct
JetBlue Logo
12:10 - 12:50LGW-SJU
29h 40m1 stop
JetBlue Logo
19:55 - 09:35SJU-LGW
32h 40m1 stop
£464JetBlue
Find Deal
Fri, 19 Sep - Mon, 22 Sep
Logo
14:00 - 14:11LGW-SJU
29h 11m1 stop
Logo
02:48 - 10:00SJU-LGW
26h 12m1 stop
£473
Find Deal
Mon, 13 Oct - Tue, 14 Oct
Icelandair Logo
12:20 - 22:20LHR-SJU
14h 00m1 stop
Icelandair Logo
07:20 - 06:55SJU-LHR
19h 35m2 stops
£486Icelandair
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Wed, 4 Feb - Wed, 18 Feb
Icelandair Logo
08:15 - 16:52LHR-SJU
13h 37m1 stop
Icelandair Logo
13:00 - 06:30SJU-LHR
12h 30m1 stop
£489Icelandair
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Wed, 3 Sep - Thu, 18 Sep
Aer Lingus Logo
14:15 - 03:55MAN-SJU
17h 40m1 stop
Aer Lingus Logo
01:59 - 06:50SJU-MAN
24h 51m1 stop
£613Aer Lingus
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Thu, 29 Jan - Sun, 8 Feb
Aer Lingus Logo
14:20 - 20:59MAN-SJU
35h 39m2 stops
Aer Lingus Logo
06:00 - 16:50SJU-MAN
29h 50m2 stops
£620Aer Lingus
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Fri, 12 Sep - Fri, 19 Sep
Iberia Logo
07:50 - 16:35LCY-SJU
12h 45m1 stop
Iberia Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£929Iberia
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Wed, 4 Feb - Wed, 18 Feb
Iberia Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£961Iberia
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Mon, 19 Jan - Sun, 1 Feb
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£1,043British Airways
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Mon, 2 Feb - Mon, 16 Feb

momondo Fare Finder

 
Locate flights to San Juan that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 14 August 2025.
Use the filters below to find and compare flights to San Juan that are best for you.

Fly from

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 13/10

14:00-14:11

1 stop29h 11m

San Juan Luis Munoz Marin Intl

Wed 15/10

15:19-10:00

1 stop13h 41m

£458

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 19/9

12:10-12:50

1 stop29h 40m

San Juan Luis Munoz Marin Intl

Mon 22/9

19:55-09:35

1 stop32h 40m

£464

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 13/10

14:00-14:11

1 stop29h 11m

San Juan Luis Munoz Marin Intl

Tue 14/10

02:48-10:00

1 stop26h 12m

£473

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 4/2

12:20-22:20

1 stop14h 00m

San Juan Luis Munoz Marin Intl

Wed 18/2

07:20-06:55

2 stops19h 35m

£486

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

08:15-16:52

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Thu 18/9

13:00-06:30

1 stop12h 30m

£489

ManchesterSan Juan

MAN - SJU

MANSJU

Manchester

Thu 29/1

14:15-03:55

1 stop17h 40m

San Juan Luis Munoz Marin Intl

Sun 8/2

01:59-06:50

1 stop24h 51m

£613

ManchesterSan Juan

MAN - SJU

MANSJU

Manchester

Fri 12/9

14:20-20:59

2 stops35h 39m

San Juan Luis Munoz Marin Intl

Fri 19/9

06:00-16:50

2 stops29h 50m

£620

LondonSan Juan

LCY - SJU

LCYSJU

London City

Wed 4/2

07:50-16:35

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Wed 18/2

21:25-14:05

1 stop12h 40m

£929

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 19/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Sun 1/2

21:25-14:35

1 stop13h 10m

£961

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 2/2

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Mon 16/2

21:25-14:35

1 stop13h 10m

£1,043

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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San Juan flights insights and trends

Explore insights for your San Juan flight to craft the best travel plan

What is the cheapest month to fly to San Juan?

The cheapest month to fly to San Juan from United Kingdom is in September. Flight prices, which tend to average around £536, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to San Juan from United Kingdom during November instead. Flights to San Juan in November, while not as cheap as those in September, still average around £550.

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 £525. 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 £640.

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 United Kingdom to San Juan when you can find flight prices for as low as £572. 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 £802.

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around £643 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 from United Kingdom for as low as £505 on momondo.

Cheapest flights to San Juan

Find the cheapest flights to San Juan from your nearest city or airport
Find flights from London Heathrow Airport to Saint Thomas Island
CHEAPEST MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTNovember14% cheaperFlying from London Heathrow Airport to San Juan costs on average just £556 in November
MOST EXPENSIVE MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTDecember38% more expensiveIt costs about £891 for flights to San Juan from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTFebruary618% more users visitedMore momondo users searched in flights to San Juan from London Heathrow Airport in February than any other month

Cheap San Juan flight deals and tips

Summary info about San Juan flight prices, duration and airlines

Best One-Way Price

£301

Best Round-Trip Price

£458

Fastest flight time

14h 20m

Popular in

December
The best one-way flight price to San Juan from United Kingdom in the last 72 hours is £301 (London Gatwick to San Juan Luis Munoz Marin Intl).
Search Deals
The best round-trip flight price to San Juan from United Kingdom in the last 72 hours is £458 (London Gatwick to San Juan Luis Munoz Marin Intl).
Search Deals
The fastest flight to San Juan from United Kingdom takes 14h 20m (London Heathrow to San Juan Luis Munoz Marin Intl).
Search Deals
December has the highest demand for flights to San Juan, with a 5% price increase on average.
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Frequently asked questions about flying to San Juan

When is the best time to plan a beach trip to San Juan?

The month of January, February, or March is often the best time to visit San Juan to go to the beach due to the weather. Condado Beach is the most often visited beach in the area. Another popular beach in the area is Isla Verde Beach.

How far in advance should I book a flight to San Juan?

We recommend purchasing flights from United Kingdom to San Juan 56 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to San Juan for £668. Don’t hesitate to check prices now though, because momondo users recently found tickets for as low as £418.

Is there an alternative airport near San Juan?

Finding an alternative and possibly cheaper destination airport near San Juan is possible. If you are planning a flight to San Juan, consider booking flights to San Juan Isla Grande Airport (1 mi from San Juan city centre), Ceiba J. Aponte de la Torre Airport (34 mi from San Juan city centre), Ponce Mercedita Airport (43 mi from San Juan city centre), Vieques Airport (46 mi from San Juan city centre) or Culebra Airport (54 mi from San Juan city centre).

Is there a cheaper alternative to flying into San Juan?

Culebra Airport has an average price of £121 per person and is typically the cheapest airport to fly into when visiting San Juan. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

What is the absolute cheapest flight to San Juan?

The best deal found on momondo in the last two weeks was a flight to San Juan from Bridgetown for £67. This is 72% cheaper than most flight deals to San Juan. To find the cheapest price to San Juan from your area, use momondo’s Airport-to-Airport Pricing Tool.

Are there flights to San Juan Antiguo?

Yes, if you fly to San Juan Luis Munoz Marin Intl in San Juan which is the closest available airport to San Juan Antiguo (7.8 mi away).

What’s the closest airport to Condado Beach?

The closest airport to Condado Beach is 5.3 mi away - San Juan’s San Juan Luis Munoz Marin Intl airport.

When did momondo last update prices for flights to San Juan?

Prices for flights to San Juan refresh daily.

How many operators does momondo search for flights to San Juan?

The number of operators available for flights to San Juan is 18 as of August 2025.

How old do you have to be to fly to San Juan?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to San Juan.

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

The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to San Juan. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to San Juan which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan. Filter by price, airline, airport, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of 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 San Juan

Popular Flights to San Juan

Popular routes according to searches in the past day on momondo
London to San Juan Flightsfrom £620
Manchester to San Juan Flightsfrom £864
Glasgow to San Juan Flightsfrom £977
Edinburgh Turnhouse to San Juan Flightsfrom £822
Birmingham to San Juan Flightsfrom £1,416
Norwich Arpt to San Juan Flightsfrom £2,251
Newcastle upon Tyne to San Juan Flightsfrom £1,296