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Flights to San Juan

£305 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 11/1. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:00 - 15:32LGW-SJU
30h 32m1 stop
Multiple Airlines Logo
11:07 - 06:00SJU-LGW
38h 53m2 stops
£559Multiple Airlines
Find Deal
Sun, 8 Mar - Sat, 21 Mar
Multiple Airlines Logo
20:50 - 16:40LGW-SJU
23h 50m2 stops
Multiple Airlines Logo
18:10 - 16:20SJU-LGW
18h 10m2 stops
£560Multiple Airlines
Find Deal
Sun, 1 Mar - Wed, 11 Mar
Multiple Airlines Logo
11:55 - 15:35LGW-SJU
31h 40m3 stops
Multiple Airlines Logo
06:00 - 10:55SJU-LGW
24h 55m3 stops
£565Multiple Airlines
Find Deal
Fri, 16 Jan - Sat, 24 Jan
Multiple Airlines Logo
20:50 - 16:40LHR-SJU
23h 50m2 stops
Multiple Airlines Logo
21:25 - 20:05SJU-LHR
18h 40m2 stops
£565Multiple Airlines
Find Deal
Sun, 1 Mar - Wed, 11 Mar
Icelandair Logo
09:20 - 22:26LHR-SJU
17h 06m2 stops
Icelandair Logo
08:50 - 06:55SJU-LHR
18h 05m2 stops
£568Icelandair
Find Deal
Sat, 7 Mar - Tue, 17 Mar
JetBlue Logo
08:05 - 19:23LHR-SJU
15h 18m1 stop
JetBlue Logo
14:00 - 06:55SJU-LHR
12h 55m1 stop
£568JetBlue
Find Deal
Mon, 12 Jan - Fri, 16 Jan
JetBlue Logo
12:20 - 02:27LHR-SJU
18h 07m1 stop
JetBlue Logo
05:01 - 21:40SJU-LHR
12h 39m1 stop
£571JetBlue
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Sun, 15 Mar - Tue, 17 Mar
Iberia Logo
19:15 - 16:35LCY-SJU
25h 20m1 stop
Iberia Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£864Iberia
Find Deal
Tue, 13 Jan - Tue, 20 Jan
Iberia Logo
19:15 - 19:55LCY-SJU
28h 40m1 stop
Iberia Logo
21:25 - 08:50SJU-LCY
31h 25m1 stop
£866Iberia
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Mon, 26 Jan - Thu, 5 Feb
British Airways Logo
08:20 - 23:56EDI-SJU
19h 36m2 stops
British Airways Logo
14:28 - 12:10SJU-EDI
17h 42m2 stops
£952British Airways
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Thu, 22 Jan - Mon, 26 Jan

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 2 December 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

Sun 8/3

13:00-15:32

1 stop30h 32m

San Juan Luis Munoz Marin Intl

Sat 21/3

11:07-06:00

2 stops38h 53m

£559

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 1/3

20:50-16:40

2 stops23h 50m

San Juan Luis Munoz Marin Intl

Wed 11/3

18:10-16:20

2 stops18h 10m

£560

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 16/1

11:55-15:35

3 stops31h 40m

San Juan Luis Munoz Marin Intl

Sat 24/1

06:00-10:55

3 stops24h 55m

£565

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 1/3

20:50-16:40

2 stops23h 50m

San Juan Luis Munoz Marin Intl

Wed 11/3

21:25-20:05

2 stops18h 40m

£565

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 7/3

09:20-22:26

2 stops17h 06m

San Juan Luis Munoz Marin Intl

Tue 17/3

08:50-06:55

2 stops18h 05m

£568

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 12/1

08:05-19:23

1 stop15h 18m

San Juan Luis Munoz Marin Intl

Fri 16/1

14:00-06:55

1 stop12h 55m

£568

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 15/3

12:20-02:27

1 stop18h 07m

San Juan Luis Munoz Marin Intl

Tue 17/3

05:01-21:40

1 stop12h 39m

£571

LondonSan Juan

LCY - SJU

LCYSJU

London City

Tue 13/1

19:15-16:35

1 stop25h 20m

San Juan Luis Munoz Marin Intl

Tue 20/1

21:25-14:05

1 stop12h 40m

£864

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

19:15-19:55

1 stop28h 40m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-08:50

1 stop31h 25m

£866

EdinburghSan Juan

EDI - SJU

EDISJU

Edinburgh Turnhouse

Thu 22/1

08:20-23:56

2 stops19h 36m

San Juan Luis Munoz Marin Intl

Mon 26/1

14:28-12:10

2 stops17h 42m

£952

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 £539, 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 January instead. Flights to San Juan in January, while not as cheap as those in September, still average around £569.

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 £538. 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 £655.

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 £586. 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 £821.

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 £652 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 £530 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 AIRPORTSeptember15% cheaperFlying from London Heathrow Airport to San Juan costs on average just £558 in September
MOST EXPENSIVE MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTDecember45% more expensiveIt costs about £945 for flights to San Juan from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO SAN JUAN FROM LONDON HEATHROW AIRPORTDecember275% 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

£305

Best Round-Trip Price

£559

Fastest flight time

20h 50m

Popular in

December
The best one-way flight price to San Juan from United Kingdom in the last 72 hours is £305 (London Gatwick to San Juan Luis Munoz Marin Intl).
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The best round-trip flight price to San Juan from United Kingdom in the last 72 hours is £559 (London Gatwick to San Juan Luis Munoz Marin Intl).
Search Deals
The fastest flight to San Juan from United Kingdom takes 20h 50m (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 £677. Don’t hesitate to check prices now though, because momondo users recently found tickets for as low as £419.

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.

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 £69. This is 68% 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 Viejo San Juan?

The closest airport to Viejo San Juan is 7.7 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 December 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.

An easier way to manage your San Juan trip

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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 £529
Manchester to San Juan Flightsfrom £812
Edinburgh Turnhouse to San Juan Flightsfrom £1,236
Birmingham to San Juan Flightsfrom £1,538
Glasgow to San Juan Flightsfrom £1,314
Norwich Arpt to San Juan Flightsfrom £1,472
Newcastle upon Tyne to San Juan Flightsfrom £1,270