Flights to San Juan

£292 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 18/4. 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 the United Kingdom to San Juan

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:00 - 11:52
LGW
-
SJU
26h 52m
1 stop
Multiple Airlines Logo
20:27 - 10:00
SJU
-
LGW
32h 33m
1 stop
£529Multiple Airlines
Sun, 19 Apr - Sat, 25 Apr
Multiple Airlines Logo
14:00 - 09:19
LGW
-
SJU
24h 19m
1 stop
Multiple Airlines Logo
02:59 - 10:00
SJU
-
LGW
26h 01m
1 stop
£541Multiple Airlines
Sat, 18 Apr - Sat, 25 Apr
JetBlue Logo
08:40 - 22:12
LHR
-
SJU
18h 32m
1 stop
JetBlue Logo
19:58 - 20:45
SJU
-
LHR
19h 47m
1 stop
£561JetBlue
Tue, 14 Apr - Tue, 21 Apr
JetBlue Logo
08:15 - 00:07
LHR
-
SJU
20h 52m
1 stop
JetBlue Logo
05:01 - 06:30
SJU
-
LHR
20h 29m
1 stop
£563JetBlue
Mon, 13 Apr - Mon, 20 Apr
Icelandair Logo
14:20 - 12:42
GLA
-
SJU
27h 22m
2 stops
Icelandair Logo
14:25 - 13:25
SJU
-
GLA
18h 00m
2 stops
£880Icelandair
Sat, 12 Sep - Wed, 16 Sep
Icelandair Logo
14:20 - 12:17
GLA
-
SJU
26h 57m
2 stops
Icelandair Logo
14:25 - 13:25
SJU
-
GLA
18h 00m
2 stops
£895Icelandair
Sat, 12 Sep - Wed, 16 Sep
British Airways Logo
06:45 - 22:05
LCY
-
SJU
20h 20m
2 stops
British Airways Logo
13:25 - 10:20
SJU
-
LCY
15h 55m
2 stops
£932British Airways
Mon, 13 Apr - Wed, 29 Apr
British Airways Logo
06:30 - 23:59
GLA
-
SJU
22h 29m
2 stops
British Airways Logo
12:05 - 10:30
SJU
-
GLA
17h 25m
2 stops
£1,039British Airways
Sat, 12 Sep - Wed, 16 Sep
United Airlines Logo
14:00 - 23:50
GLA
-
SJU
14h 50m
1 stop
United Airlines Logo
07:00 - 10:10
SJU
-
GLA
22h 10m
2 stops
£1,069United Airlines
Sat, 12 Sep - Wed, 16 Sep
United Airlines Logo
14:00 - 23:50
GLA
-
SJU
14h 50m
1 stop
United Airlines Logo
14:55 - 10:10
SJU
-
GLA
14h 15m
1 stop
£1,073United Airlines
Sat, 12 Sep - Wed, 16 Sep

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 18 March 2026.
Use the filters below to find and compare flights to San Juan that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 19/4

14:00-11:52

1 stop26h 52m

San Juan Luis Munoz Marin Intl

Sat 25/4

20:27-10:00

1 stop32h 33m

£529

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 18/4

14:00-09:19

1 stop24h 19m

San Juan Luis Munoz Marin Intl

Sat 25/4

02:59-10:00

1 stop26h 01m

£541

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 14/4

08:40-22:12

1 stop18h 32m

San Juan Luis Munoz Marin Intl

Tue 21/4

19:58-20:45

1 stop19h 47m

£561

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 13/4

08:15-00:07

1 stop20h 52m

San Juan Luis Munoz Marin Intl

Mon 20/4

05:01-06:30

1 stop20h 29m

£563

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Sat 12/9

14:20-12:42

2 stops27h 22m

San Juan Luis Munoz Marin Intl

Wed 16/9

14:25-13:25

2 stops18h 00m

£880

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Sat 12/9

14:20-12:17

2 stops26h 57m

San Juan Luis Munoz Marin Intl

Wed 16/9

14:25-13:25

2 stops18h 00m

£895

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 13/4

06:45-22:05

2 stops20h 20m

San Juan Luis Munoz Marin Intl

Wed 29/4

13:25-10:20

2 stops15h 55m

£932

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Sat 12/9

06:30-23:59

2 stops22h 29m

San Juan Luis Munoz Marin Intl

Wed 16/9

12:05-10:30

2 stops17h 25m

£1,039

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Sat 12/9

14:00-23:50

1 stop14h 50m

San Juan Luis Munoz Marin Intl

Wed 16/9

07:00-10:10

2 stops22h 10m

£1,069
Fastest return journey

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Sat 12/9

14:00-23:50

1 stop14h 50m

San Juan Luis Munoz Marin Intl

Wed 16/9

14:55-10:10

1 stop14h 15m

£1,073

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

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 £547, 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 February instead. Flights to San Juan in February, while not as cheap as those in September, still average around £550.

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 £670 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 £526 on momondo.

Cheapest flights to San Juan

Find the cheapest flights to San Juan from your nearest city or airport
CHEAPEST MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTSeptember18% cheaperFlying from London Heathrow Airport to San Juan costs on average just £554 in September
MOST EXPENSIVE MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTDecember46% more expensiveIt costs about £983 for flights to San Juan from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTDecember484% more users visitedMore momondo users searched in flights to San Juan from London Heathrow Airport in December 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

£292

Best Round-Trip Price

£529

Fastest flight time

24h 19m

Popular in

December
The best one-way flight price to San Juan from United Kingdom in the last 72 hours is £292 (London Stansted to San Juan Luis Munoz Marin Intl).
The best round-trip flight price to San Juan from United Kingdom in the last 72 hours is £529 (London Gatwick to San Juan Luis Munoz Marin Intl).
The fastest flight to San Juan from United Kingdom takes 24h 19m (London Gatwick to San Juan Luis Munoz Marin Intl).
December has the highest demand for flights to San Juan, with a 1% price increase on average.

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 45 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 £691. Don’t hesitate to check prices now though, because momondo users recently found tickets for as low as £368.

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 £67 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.

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 Cruise Line Terminal?

The closest airport to Cruise Line Terminal is 7.2 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?

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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1 adult
Fri 17/4
Fri 24/4

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Popular Flights to San Juan

Popular routes according to searches in the past day on momondo