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Cheap flights from London Gatwick Airport to San Juan from £261

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SJU
19 Nov — 26 Nov1
1 adult
1 adult, Economy

Find flight deals from Gatwick to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to San Juan
Explore the most affordable flight options available from Gatwick to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2025.

Sat 6/1214:00LGW - SJU
1 stop24h 33mMultiple Airlines
Sat 13/1213:32SJU - LGW
1 stop16h 33mMultiple Airlines
Deal found 18/10£488
Thu 13/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Wed 10/1203:55SJU - LGW
1 stop26h 05mMultiple Airlines
Deal found 18/10£497
Fri 28/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Sun 7/1203:55SJU - LGW
1 stop26h 05mMultiple Airlines
Deal found 20/10£531
Tue 2/1213:00LGW - SJU
1 stop33h 23mMultiple Airlines
Tue 9/1209:15SJU - LGW
1 stop16h 45mMultiple Airlines
Deal found 18/10£538
Sat 6/1216:35LGW - SJU
2 stops38h 42mTAP AIR PORTUGAL
Sat 13/1217:32SJU - LGW
2 stops23h 08mTAP AIR PORTUGAL
Deal found 18/10£598
Thu 6/1116:00LGW - SJU
2 stops39h 17mTAP AIR PORTUGAL
Sat 15/1109:20SJU - LGW
2 stops44h 45mTAP AIR PORTUGAL
Deal found 19/10£631

Cheap flight deals from Gatwick to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 October 2025.

Round-trip from

£485

One-way from

£261

Popular in

December

Cheapest in

March

Average price

£942
18/2-27/2
  • 18/2-27/2
  • 2 total stops
  • 50h 03m total
  • London to San Juan
Search Deals
5/2
  • 5/2
  • 2 total stops
  • 36h 32m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick 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, Cheapflights users made 858,174 searches. Data last updated 20 October 2025.
Use the filters below to find and compare flights from London Gatwick Airport to San Juan that are best for you.

Fly from

Gatwick

Fly to

San Juan

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 6/12

14:00-10:33

1 stop24h 33m

San Juan Luis Munoz Marin Intl

Sat 13/12

13:32-10:05

1 stop16h 33m

£488

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 19/2

14:00-02:50

1 stop16h 50m

San Juan Luis Munoz Marin Intl

Fri 27/2

11:05-10:00

1 stop18h 55m

£494

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 16/1

14:00-19:21

1 stop33h 21m

San Juan Luis Munoz Marin Intl

Fri 30/1

12:10-10:00

1 stop17h 50m

£495

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 20/2

14:00-02:50

1 stop16h 50m

San Juan Luis Munoz Marin Intl

Thu 26/2

11:05-10:00

1 stop18h 55m

£497

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 13/11

14:00-02:54

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Thu 11/12

09:15-10:00

2 stops44h 45m

£500

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 18/2

13:00-16:13

1 stop31h 13m

San Juan Luis Munoz Marin Intl

Tue 24/2

08:40-06:00

1 stop17h 20m

£500

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 16/2

14:00-09:55

1 stop23h 55m

San Juan Luis Munoz Marin Intl

Fri 27/2

11:05-10:00

1 stop18h 55m

£509

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 18/2

08:30-17:54

2 stops37h 24m

San Juan Luis Munoz Marin Intl

Tue 3/3

08:40-06:00

1 stop17h 20m

£520

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 28/11

14:00-02:54

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Sun 7/12

03:55-10:00

1 stop26h 05m

£531

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 2/2

06:05-19:55

2 stops17h 50m

San Juan Luis Munoz Marin Intl

Wed 11/2

03:55-10:00

1 stop26h 05m

£572

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from Gatwick to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Gatwick with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to San Juan

What is the cheapest time of day to fly from LGW to SJU?

Find hourly flight availability from Gatwick to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 October 2025.

It’s optimal to fly from London Gatwick Airport to San Juan in the evening. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight at midday.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated 20 October 2025.
See what other customers who have flown with Iberia from London Gatwick Airport to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
2,996 reviews
Check prices

Food

6.3

Entertainment

6.6

Crew

7.7

Boarding

7.1

Comfort

6.7

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Jason,Jan 2025

LHR - AUS

You owe me a flight. This trip was canceled and I got to the airport just to find out. Cheapflights did not book me another flight and left me hanging at the airport. I had to purchase a new ticket for double the price because of your company. What a shame and if nothing gets resolved I am going to file a lawsuit to get my compensation.
Iberia
7.0
Good
2,996 reviews
Iberia
7.0
Good
2,996 reviews
Check prices

Food

6.3

Entertainment

6.6

Crew

7.7

Boarding

7.1

Comfort

6.7

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Jason,Jan 2025

LHR - AUS

You owe me a flight. This trip was canceled and I got to the airport just to find out. Cheapflights did not book me another flight and left me hanging at the airport. I had to purchase a new ticket for double the price because of your company. What a shame and if nothing gets resolved I am going to file a lawsuit to get my compensation.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from London Gatwick Airport to San Juan round-trip?

    Our cheapest airline available from London Gatwick Airport to San Juan is Iberia. Our recent data shows that you can find tickets from as low as £517 on this airline. This flight start at 32% lower than the current average price 3 months from now.

  • Can I find deals for flights from Gatwick to San Juan that include hotel bookings?

    Yes. In addition to deals on Gatwick to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to San Juan.

  • Can I find deals for business class flights from Gatwick to San Juan?

    Yes. Cheapflights offers flight deals from Gatwick to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Gatwick to San Juan

Discover the top airline that operate flights from Gatwick to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£517Average£894FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Gatwick to San Juan?

When you search for this flight from Gatwick to San Juan, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to San Juan?

Cheapflights simply makes it quick and affordable to book flights from Gatwick to San Juan by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Gatwick to San Juan with no change fees?

Yes! Cheapflights helps users easily find flights from Gatwick to San Juan with no change fees.

Can Cheapflights notify me if prices for flights from Gatwick to San Juan become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Juan from Gatwick today and book when prices fit your budget.

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