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Cheap flights from London Gatwick Airport to San Juan from £253

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SJU
8 Apr — 15 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 March 2026.

Mon 16/319:25
LGW
-
SJU
2 stops33h 54m
Multiple Airlines
Tue 31/301:45
SJU
-
LGW
1 stop27h 15m
Multiple Airlines
Deal found 6/3£557
Sat 18/414:00
LGW
-
SJU
2 stops38h 59m
Multiple Airlines
Sun 26/402:59
SJU
-
LGW
1 stop26h 01m
Multiple Airlines
Deal found 8/3£559
Sat 18/419:40
LGW
-
SJU
2 stops34h 18m
Multiple Airlines
Sat 25/420:27
SJU
-
LGW
1 stop32h 33m
Multiple Airlines
Deal found 4/3£581
Fri 17/414:00
LGW
-
SJU
2 stops39h 29m
Multiple Airlines
Sun 26/402:59
SJU
-
LGW
1 stop26h 01m
Multiple Airlines
Deal found 8/3£583
Wed 8/414:00
LGW
-
SJU
1 stop23h 53m
Multiple Airlines
Wed 15/411:30
SJU
-
LGW
2 stops37h 50m
Multiple Airlines
Deal found 6/3£588
Sun 19/413:00
LGW
-
SJU
2 stops40h 58m
Multiple Airlines
Sat 25/402:59
SJU
-
LGW
1 stop26h 01m
Multiple Airlines
Deal found 5/3£590
Fri 17/414:00
LGW
-
SJU
1 stop26h 52m
Multiple Airlines
Sun 26/419:01
SJU
-
LGW
1 stop33h 59m
Multiple Airlines
Deal found 8/3£594
Mon 16/319:25
LGW
-
SJU
2 stops33h 54m
Multiple Airlines
Sat 4/409:48
SJU
-
LGW
1 stop19h 12m
Multiple Airlines
Deal found 6/3£598
Sat 2/513:05
LGW
-
SJU
1 stop15h 54m
Multiple Airlines
Fri 8/503:08
SJU
-
LGW
2 stops22h 12m
Multiple Airlines
Deal found 5/3£598

Find 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 9 March 2026.

Round-trip from

£559

One-way from

£253

Popular in

December

Cheapest in

May

Average price

£677
18/4-26/4
  • 18/4-26/4
  • 3 total stops
  • 65h 00m total
  • London to San Juan
Search Deals
12/4
  • 12/4
  • 2 total stops
  • 50h 34m total
  • London to San Juan
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 9 March 2026.
Use the filters below to find and compare flights from London Gatwick Airport to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 18/4

14:00-11:52

1 stop26h 52m

San Juan Luis Munoz Marin Intl

Sat 25/4

20:27-10:00

1 stop32h 33m

£582

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 14/4

15:40-02:07

2 stops39h 27m

San Juan Luis Munoz Marin Intl

Thu 23/4

06:25-14:40

2 stops27h 15m

£709

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 22/4

14:00-11:52

1 stop26h 52m

San Juan Luis Munoz Marin Intl

Tue 28/4

02:59-10:00

1 stop26h 01m

£710

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 8/4

14:00-08:53

1 stop23h 53m

San Juan Luis Munoz Marin Intl

Tue 14/4

02:59-10:00

1 stop26h 01m

£724

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 16/4

10:00-00:58

2 stops19h 58m

San Juan Luis Munoz Marin Intl

Sun 26/4

07:00-16:25

2 stops28h 25m

£740

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 23/4

15:40-02:07

2 stops39h 27m

San Juan Luis Munoz Marin Intl

Wed 29/4

10:00-14:40

2 stops23h 40m

£757

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 15/4

15:40-02:07

2 stops39h 27m

San Juan Luis Munoz Marin Intl

Wed 22/4

10:00-14:40

2 stops23h 40m

£791
Fastest return journey

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 7/5

13:00-02:39

2 stops18h 39m

San Juan Luis Munoz Marin Intl

Mon 11/5

05:01-11:45

2 stops25h 44m

£793

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 20/3

14:00-08:53

1 stop22h 53m

San Juan Luis Munoz Marin Intl

Fri 27/3

06:30-10:00

1 stop23h 30m

£810

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 24/3

14:00-08:53

1 stop22h 53m

San Juan Luis Munoz Marin Intl

Mon 6/4

01:45-10:00

1 stop27h 15m

£845

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 20 resultsSorted by cheapest first
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
No data available for this route at this time. Please check back soon.

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 9 March 2026.
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
3,132 reviews
Check prices

Overall

7.0

Crew

7.7

Comfort

6.8

Food

6.4

Entertainment

6.6

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

LHR - DFW

Transparency. There was a gate change that was not disclosed on my ticket that made the connection to Vegas hurried. Also, it’s a given that for international travel, luggage pickup is required at first port of entry in the US, but please don’t have international employees set the expectation that luggage does not have to be picked up until the final destination. If I followed her instructions, my luggage would have been sitting at my connection now.
Iberia
7.0
Good
3,132 reviews
Iberia
7.0
Good
3,132 reviews
Check prices

Overall

7.0

Crew

7.7

Comfort

6.8

Food

6.4

Entertainment

6.6

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

LHR - DFW

Transparency. There was a gate change that was not disclosed on my ticket that made the connection to Vegas hurried. Also, it’s a given that for international travel, luggage pickup is required at first port of entry in the US, but please don’t have international employees set the expectation that luggage does not have to be picked up until the final destination. If I followed her instructions, my luggage would have been sitting at my connection now.

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.

  • How long is the flight from London Gatwick Airport to San Juan?

    Departing from London Gatwick Airport to San Juan will take you 39h 27m. London Gatwick Airport and San Juan are separated by a distance of 4188 mi.

  • 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 £556 on this airline. This flight start at 31% 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

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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 9 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£556Average£965FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

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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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