What are the cheapest airlines flying from London Gatwick Airport to San Juan round-trip?

Our cheapest airline available from London Gatwick Airport to San Juan is Icelandair. Our recent data shows that you can find tickets from as low as £420 on this airline. An additional option worth looking into is Iberia, starting at £512. These flights start at 46% lower than the current average price 3 months from now.

What is the cheapest month to book a flight from London Gatwick Airport to San Juan?

Currently, April is the cheapest month in which you can book a flight from London Gatwick Airport to San Juan (average of £631). Flying from London Gatwick Airport to San Juan in July is currently the most expensive (average of £1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from London Gatwick Airport to San Juan?

Travellers seeking maximum savings on their London Gatwick Airport to San Juan flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Juan ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan when rainfall is around 55.0 mm.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

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

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from London Gatwick Airport to San Juan?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 57 days in advance, which can save you up to 58% on flights from London Gatwick Airport to San Juan compared to booking the week you need them. Waiting 57 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £476. For sooner than that we have options available in the next 3 days from £791.

What is the cheapest month to fly from London Gatwick Airport to San Juan?

Flights from London Gatwick Airport to San Juan lean towards being more expensive in July. Prices are generally better when you fly from London Gatwick Airport to San Juan in September, with the cheapest ticket starting at £436.

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.

£308+ Cheap Flights from London Gatwick Airport to San Juan

Cheap flight deals from Gatwick to San Juan

Round-trip from	£493
One-way from	£308
Popular in	December
Cheapest in	March
Average price	£1,106

Icelandair
25/9-3/10
3 total stops
45h 07m total
London to San Juan

Search Deals

8/10
1 total stop
16h 44m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£84 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease (£39 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Gatwick to San Juan

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 17 August 2025.

Thu 25/912:10LGW - SJU

2 stops29h 32mIcelandair

Fri 3/1013:00SJU - LGW

1 stop15h 35mIcelandair

Deal found 16/8£493

Thu 2/1021:20LGW - SJU

2 stops41h 36mMultiple Airlines

Sat 18/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/8£495

Sat 13/912:10LGW - SJU

1 stop29h 10mIcelandair

Sat 20/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£496

Tue 16/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Tue 23/921:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 17/8£497

Thu 9/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Sun 19/1015:19SJU - LGW

1 stop13h 51mMultiple Airlines

Deal found 15/8£499

Tue 9/912:10LGW - SJU

2 stops38h 46mIcelandair

Wed 24/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£500

Sat 13/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Sat 20/906:44SJU - LGW

1 stop22h 16mMultiple Airlines

Deal found 16/8£501

Thu 9/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Thu 23/1015:19SJU - LGW

1 stop13h 41mMultiple Airlines

Deal found 15/8£504

Mon 6/1021:20LGW - SJU

2 stops47h 04mMultiple Airlines

Sat 18/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/8£507

Tue 7/1009:50LGW - SJU

2 stops34h 34mMultiple Airlines

Wed 22/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 15/8£508

Fri 3/1014:00LGW - SJU

1 stop15h 54mMultiple Airlines

Sun 19/1015:19SJU - LGW

1 stop13h 51mMultiple Airlines

Deal found 15/8£510

Fri 3/1014:00LGW - SJU

1 stop15h 54mMultiple Airlines

Wed 22/1015:19SJU - LGW

1 stop13h 41mMultiple Airlines

Deal found 15/8£514

Best flights from Gatwick to San Juan
Discover carefully curated flight deals from Gatwick to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 August 2025.

Fri 23/114:00LGW - SJU

1 stop31h 34mMultiple Airlines

Sun 1/220:28SJU - LGW

1 stop33h 32mMultiple Airlines

Deal found 16/8£493

Thu 25/912:10LGW - SJU

2 stops29h 32mIcelandair

Fri 3/1013:00SJU - LGW

1 stop15h 35mIcelandair

Deal found 16/8£493

Thu 2/1021:20LGW - SJU

2 stops41h 36mMultiple Airlines

Sat 18/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/8£495

Sat 13/912:10LGW - SJU

1 stop29h 10mIcelandair

Sat 20/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£496

Tue 16/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Tue 23/921:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 17/8£497

Tue 9/912:10LGW - SJU

2 stops38h 46mIcelandair

Wed 24/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£500

Thu 9/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Sun 19/1015:19SJU - LGW

1 stop13h 51mMultiple Airlines

Deal found 15/8£499

Sat 13/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Sat 20/906:44SJU - LGW

1 stop22h 16mMultiple Airlines

Deal found 16/8£501

Thu 9/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Thu 23/1015:19SJU - LGW

1 stop13h 41mMultiple Airlines

Deal found 15/8£504

Mon 6/1021:20LGW - SJU

2 stops47h 04mMultiple Airlines

Sat 18/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/8£507

Tue 7/1009:50LGW - SJU

2 stops34h 34mMultiple Airlines

Wed 22/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 15/8£508

Mon 6/1021:20LGW - SJU

2 stops47h 04mMultiple Airlines

Wed 22/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 15/8£508

Last-minute flights from Gatwick to San Juan
Discover last-minute flight deals from Gatwick to San Juan. Data last updated 17 August 2025 and is based on user searches.

Tue 26/814:00LGW - SJU

1 stop14h 57mMultiple Airlines

Sat 4/1015:19SJU - LGW

1 stop13h 41mMultiple Airlines

Deal found 16/8£580

Sun 7/914:00LGW - SJU

2 stops26h 04mMultiple Airlines

Sat 13/921:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 15/8£533

Tue 9/912:10LGW - SJU

2 stops38h 46mIcelandair

Wed 24/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£500

Tue 9/914:00LGW - SJU

1 stop17h 34mMultiple Airlines

Tue 23/903:39SJU - LGW

2 stops21h 41mMultiple Airlines

Deal found 15/8£527

Sat 13/912:10LGW - SJU

1 stop29h 10mIcelandair

Sat 20/906:00SJU - LGW

2 stops22h 35mIcelandair

Deal found 16/8£496

Sat 13/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Sat 20/906:44SJU - LGW

1 stop22h 16mMultiple Airlines

Deal found 16/8£501

Tue 16/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Tue 23/921:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 17/8£497

Wed 17/912:10LGW - SJU

1 stop29h 10mJetBlue

Fri 26/913:00SJU - LGW

1 stop15h 35mJetBlue

Deal found 15/8£521

Fri 19/914:00LGW - SJU

1 stop17h 34mMultiple Airlines

Mon 6/1001:59SJU - LGW

2 stops27h 01mMultiple Airlines

Deal found 15/8£538

Thu 25/912:10LGW - SJU

2 stops29h 32mIcelandair

Fri 3/1013:00SJU - LGW

1 stop15h 35mIcelandair

Deal found 16/8£493

One-way flights from Gatwick to San Juan
Search for one-way flight options from Gatwick to San Juan. Find affordable one-way fares based on user searches. Data last updated 17 August 2025.

Wed 8/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Deal found 15/8£308

Mon 2/214:00LGW - SJU

1 stop33h 21mMultiple Airlines

Deal found 15/8£311

Fri 6/214:00LGW - SJU

1 stop33h 21mMultiple Airlines

Deal found 15/8£319

Mon 6/1008:30LGW - SJU

3 stops34h 42mMultiple Airlines

Deal found 15/8£325

Sun 1/213:00LGW - SJU

2 stops31h 23mMultiple Airlines

Deal found 15/8£328

Sat 4/1014:00LGW - SJU

1 stop29h 12mMultiple Airlines

Deal found 15/8£351

Thu 5/214:00LGW - SJU

1 stop33h 21mMultiple Airlines

Deal found 15/8£356

Thu 29/114:00LGW - SJU

1 stop23h 52mMultiple Airlines

Deal found 15/8£356

Tue 3/213:10LGW - SJU

3 stops34h 11mMultiple Airlines

Deal found 15/8£362

Cheapflights Fare Finder

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

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 23/1

14:00-17:34

1 stop31h 34m

San Juan Luis Munoz Marin Intl

Sun 1/2

20:28-10:00

1 stop33h 32m

£493

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 25/9

12:10-12:42

2 stops29h 32m

San Juan Luis Munoz Marin Intl

Fri 3/10

13:00-09:35

1 stop15h 35m

£493

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 2/10

21:20-09:56

2 stops41h 36m

San Juan Luis Munoz Marin Intl

Sat 18/10

06:22-06:20

1 stop18h 58m

£495

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 13/9

12:10-12:20

1 stop29h 10m

San Juan Luis Munoz Marin Intl

Sat 20/9

06:00-09:35

2 stops22h 35m

£496

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 16/9

13:05-09:56

1 stop25h 51m

San Juan Luis Munoz Marin Intl

Tue 23/9

21:26-06:20

1 stop27h 54m

£497

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Sun 19/10

15:19-10:10

1 stop13h 51m

£499

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 9/9

12:10-21:56

2 stops38h 46m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:35

2 stops22h 35m

£500

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 13/9

14:00-14:11

1 stop29h 11m

San Juan Luis Munoz Marin Intl

Sat 20/9

06:44-10:00

1 stop22h 16m

£501

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Thu 23/10

15:19-10:00

1 stop13h 41m

£504

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 6/10

21:20-15:24

2 stops47h 04m

San Juan Luis Munoz Marin Intl

Sat 18/10

06:22-06:20

1 stop18h 58m

£507

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 19 results

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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Gatwick Airport to San Juan as you normally would.

Reviews of airlines servicing San Juan

See what other customers who have flown with Icelandair and 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.

Icelandair

7.0

Good

527 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

KEF - EWR

The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient

Icelandair

7.0

Good

527 reviews

Icelandair

7.0

Good

527 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

KEF - EWR

Iberia

7.0

Good

2,883 reviews

Icelandair

7.0

Good

527 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

KEF - EWR

Related info for your journey

What are the cheapest airlines flying from London Gatwick Airport to San Juan round-trip?
Our cheapest airline available from London Gatwick Airport to San Juan is Icelandair. Our recent data shows that you can find tickets from as low as £420 on this airline. An additional option worth looking into is Iberia, starting at £512. These flights start at 46% 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.
What is the cheapest month to book a flight from London Gatwick Airport to San Juan?
Currently, April is the cheapest month in which you can book a flight from London Gatwick Airport to San Juan (average of £631). Flying from London Gatwick Airport to San Juan in July is currently the most expensive (average of £1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Gatwick to San Juan

Heathrow to Luis Munoz Marin Intl flights

Gatwick to Luis Munoz Marin Intl flights

London City to Luis Munoz Marin Intl flights

Stansted to Luis Munoz Marin Intl flights

Heathrow to Aguadilla flights

Complete your trip

San Juan car hire

San Juan Luis Munoz Marin Intl Airport car hire

Ponce Mercedita Airport car hire

San Juan Isla Grande Airport car hire

Vieques Airport car hire

Condado car hire

Santurce car hire

San Juan Antiguo car hire

Hato Rey Sur car hire

Hato Rey Norte car hire

Gobernador Piñero car hire

Hato Rey Central car hire

Top 2 airlines flying from Gatwick to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£420	Average£693	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£512	Average£880	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Fly with Cheapflights

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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Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Gatwick Airport to San Juan from £308

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Gatwick to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Gatwick to San Juan

Cheapest flights from Gatwick to San JuanExplore 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 17 August 2025.

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 17 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to San Juan that are best for you.

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.

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 17 August 2025.

Reviews of airlines servicing San Juan

See what other customers who have flown with Icelandair and 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.

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 are the cheapest airlines flying from London Gatwick Airport to San Juan round-trip?

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

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

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

What is the cheapest month to book a flight from London Gatwick Airport to San Juan?

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.

Alternative routes for Gatwick to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Gatwick to San Juan

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?

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

Can Cheapflights 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?

100% Free

Book with Flexibility

Travel Smart

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 17 August 2025.