How long is the flight from London to San Juan?

Airlines like JetBlue, Icelandair, and British Airways fly from London to San Juan in about 13h. The time it takes to get you to your destination can typically vary by up to 20h 50m. The distance between London and San Juan is about 4201 mi. This flight may include one or multiple stops.

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

Cheapflights users have booked flights from London to San Juan round-trip from £327. Other airlines that can offer you cheap pricing are JetBlue, from £417, and Icelandair, from £477. Virgin Atlantic is priced at 52% lower than the current average price of a flight leaving 3 months from now.

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 are the most popular routes from London to San Juan?

The most popular route from London to San Juan is London Heathrow - San Juan Luis Munoz Marin Intl. You may also consider London Gatwick - San Juan Luis Munoz Marin Intl or London Stansted - San Juan Luis Munoz Marin Intl.

What are the most popular airlines that fly from London to San Juan?

When booking a flight from London to San Juan, you may want to consider flying on JetBlue, Icelandair or Iberia as they are the most popular for this route.

Where are the most common stopover locations when flying from London to San Juan?

The most popular stopover on flights from London to San Juan is Madrid.

Where are the least popular stopover locations for London to San Juan flights?

London to San Juan flights that have stopovers will least frequently stop in New York.

What are some popular things to do or see while on a stopover in Madrid?

Spain Building, Puerta del Sol, and Plaza Mayor are the most popular attractions in Madrid if you're in need of something to do during your stopover. Spain Building, Puerta del Sol and Plaza Mayor are located about 8.5 mi, 8.4 mi, and 8.6 mi, respectively from Madrid Barajas if you are interested in checking them out. Those on a stopover in Madrid in need of a car hire can book one at Madrid Barajas for about £23.

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

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

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

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

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

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

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

Yes. Cheapflights offers flight deals from London 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.

£215+ Cheap Flights from London to San Juan

Cheap flight deals from London to San Juan

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to San Juan
Explore the most affordable flight options available from London to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Thu 1/1014:00 -

1 stop14h 13m

Sun 4/1018:42 -

1 stop34h 18m

Deal found 19/8£511

Fri 6/1112:35 -

1 stop18h 15m

Sat 14/1103:55 -

1 stop24h 20m

Deal found 19/8£524

Fri 2/1014:00 -

1 stop35h 48m

Sat 10/1018:42 -

1 stop34h 18m

Deal found 20/8£536

Wed 23/914:00 -

1 stop24h 35m

Fri 25/910:42 -

1 stop18h 18m

Deal found 18/8£541

Sun 4/1014:00 -

1 stop24h 35m

Sun 11/1010:39 -

1 stop18h 21m

Deal found 20/8£549

Thu 19/1111:00 -

1 stop19h 50m

Mon 30/1121:35 -

1 stop17h 25m

Deal found 18/8£574

Thu 1/1014:00 -

1 stop16h 52m

Fri 16/1010:39 -

1 stop18h 21m

Deal found 20/8£577

Thu 1/1008:40 -

1 stop18h 47m

Sun 4/1006:00 -

1 stop22h 30m

Deal found 19/8£588

Thu 1/1008:15 -

1 stop34h 24m

Fri 16/1019:35 -

1 stop29h 55m

Deal found 20/8£589

Wed 21/1009:45 -

2 stops34h 34m

Wed 28/1018:10 -

1 stop12h 40m

Deal found 21/8£591

Tue 3/1109:20 -

1 stop19h 05m

Tue 10/1107:00 -

1 stop22h 30m

Deal found 21/8£591

Tue 1/914:00 -

1 stop17h 15m

Sun 13/907:00 -

1 stop22h 00m

Deal found 17/8£594

Best flights from London to San Juan
Discover carefully curated flight deals from London to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Thu 1/1014:00 -

1 stop14h 13m

Sun 4/1018:55 -

2 stops34h 05m

Deal found 19/8£550

Mon 5/1008:15 -

1 stop16h 18m

Mon 12/1006:12 -

1 stop19h 18m

Deal found 21/8£601

Sat 16/120:35 -

2 stops33h 50m

Tue 26/106:01 -

2 stops33h 29m

Deal found 21/8£831

Mon 5/1007:30 -

2 stops21h 20m

Mon 12/1007:00 -

2 stops18h 55m

Deal found 21/8£996

Fri 9/1010:50 -

2 stops29h 38m

Mon 19/1010:30 -

2 stops25h 10m

Deal found 19/8£1,014

Thu 7/106:30 -

2 stops21h 26m

Thu 21/118:10 -

1 stop12h 25m

Deal found 21/8£1,044

Fri 25/916:05 -

2 stops28h 20m

Mon 28/920:50 -

1 stop13h 25m

Deal found 21/8£1,126

Tue 1/914:00 -

1 stop17h 15m

Sun 13/907:00 -

1 stop22h 00m

Deal found 17/8£594

Wed 20/109:20 -

1 stop18h 30m

Wed 27/114:00 -

1 stop12h 55m

Deal found 18/8£612

Tue 3/1110:10 -

1 stop20h 40m

Tue 10/1121:35 -

1 stop17h 25m

Deal found 21/8£596

Sat 12/914:00 -

1 stop24h 35m

Mon 28/910:42 -

1 stop18h 18m

Deal found 17/8£597

Fri 4/915:40 -

2 stops26h 31m

Sun 6/905:01 -

2 stops49h 44m

Deal found 18/8£838

Wed 20/108:30 -

1 stop15h 30m

Wed 27/118:10 -

1 stop13h 45m

Deal found 18/8£651

Thu 1/1008:15 -

1 stop16h 19m

Thu 8/1006:12 -

1 stop19h 18m

Deal found 17/8£829

Tue 22/915:40 -

2 stops26h 59m

Sat 26/910:30 -

2 stops23h 05m

Deal found 18/8£864

Thu 14/106:20 -

1 stop14h 20m

Sun 24/118:10 -

1 stop13h 40m

Deal found 21/8£676

Thu 1/1007:30 -

2 stops21h 20m

Wed 7/1001:00 -

1 stop23h 55m

Deal found 17/8£1,019

Tue 12/109:20 -

1 stop18h 30m

Mon 25/111:06 -

1 stop18h 24m

Deal found 21/8£857

Wed 4/1107:40 -

1 stop13h 00m

Wed 18/1111:34 -

2 stops17h 16m

Deal found 17/8£1,065

Fri 4/914:00 -

1 stop34h 38m

Sun 6/909:16 -

1 stop19h 44m

Deal found 18/8£680

Wed 21/1017:45 -

2 stops25h 04m

Wed 28/1013:00 -

2 stops23h 20m

Deal found 21/8£1,107

Sat 3/1006:50 -

2 stops22h 00m

Sat 10/1007:00 -

2 stops18h 45m

Deal found 19/8£1,050

Tue 3/1108:50 -

2 stops19h 09m

Tue 10/1121:35 -

1 stop12h 25m

Deal found 21/8£1,066

Thu 19/1106:20 -

1 stop14h 20m

Mon 30/1118:10 -

2 stops19h 50m

Deal found 18/8£681

Fri 25/913:05 -

2 stops27h 57m

Mon 28/906:00 -

2 stops33h 20m

Deal found 21/8£1,095

Tue 15/909:35 -

1 stop13h 55m

Tue 22/914:22 -

2 stops16h 43m

Deal found 18/8£1,095

Thu 27/814:00 -

1 stop17h 15m

Thu 10/918:42 -

1 stop34h 18m

Deal found 19/8£692

Thu 1/1009:50 -

1 stop14h 00m

Sun 4/1014:22 -

2 stops16h 48m

Deal found 19/8£1,097

Fri 15/107:45 -

1 stop16h 15m

Sun 24/118:10 -

1 stop13h 40m

Deal found 21/8£710

Tue 1/909:10 -

2 stops18h 14m

Sun 13/914:22 -

2 stops16h 48m

Deal found 17/8£1,109

Find flight deals from London to San Juan

Round-trip from	£511
One-way from	£215
Popular in	December
Cheapest in	February
Average price	£798

1/10-4/10
2 total stops
48h 31m total
London to San Juan

Search Deals

8/11
3 total stops
57h 29m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (£20 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Thu 1/10

14:00-23:13

1 stop14h 13m

San Juan Luis Munoz Marin Intl

Sun 4/10

18:55-10:00

2 stops34h 05m

£550

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Tue 1/9

14:00-02:15

1 stop17h 15m

San Juan Luis Munoz Marin Intl

Sun 13/9

07:00-10:00

1 stop22h 00m

£594

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Tue 3/11

10:10-02:50

1 stop20h 40m

San Juan Luis Munoz Marin Intl

Tue 10/11

21:35-19:00

1 stop17h 25m

£596

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Sat 12/9

14:00-09:35

1 stop24h 35m

San Juan Luis Munoz Marin Intl

Mon 28/9

10:42-10:00

1 stop18h 18m

£597

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Mon 5/10

08:15-19:33

1 stop16h 18m

San Juan Luis Munoz Marin Intl

Mon 12/10

06:12-06:30

1 stop19h 18m

£601

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 20/1

09:20-23:50

1 stop18h 30m

San Juan Luis Munoz Marin Intl

Wed 27/1

14:00-06:55

1 stop12h 55m

£612

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Wed 20/1

08:30-20:00

1 stop15h 30m

San Juan Luis Munoz Marin Intl

Wed 27/1

18:10-11:55

1 stop13h 45m

£651

Fastest return journey

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Thu 14/1

06:20-16:40

1 stop14h 20m

San Juan Luis Munoz Marin Intl

Sun 24/1

18:10-11:50

1 stop13h 40m

£676

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Fri 4/9

14:00-19:38

1 stop34h 38m

San Juan Luis Munoz Marin Intl

Sun 6/9

09:16-10:00

1 stop19h 44m

£680

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Thu 19/11

06:20-16:40

1 stop14h 20m

San Juan Luis Munoz Marin Intl

Mon 30/11

18:10-18:00

2 stops19h 50m

£681

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from London with our price prediction graph.

LON-PR1

LGW-SJU

LHR-SJU

STN-SJU

LCY-SJU

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 to San Juan

LON-PR1

LGW-SJU

LHR-SJU

STN-SJU

LCY-SJU

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

Currently, February is the cheapest month in which you can book a flight from London to San Juan (average of £524). Flying from London to San Juan in December is currently the most expensive (average of £928). 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.

How much does it cost for a return flight from London to San Juan?

Airfare is below average for this route at the moment.

London to San Juan flights typically cost between £647 and £812 in October.
The cheapest return price found within the last 5 days was £511 on Multiple Airlines (1 Oct–4 Oct).

How far ahead should I book a flight from London to San Juan?

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing San Juan

Read through reviews of airlines operating flights from London to San Juan, such as JetBlue,Iberia, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

JetBlue

7.1

Good

3,037 reviews

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

Iberia

7.0

Good

3,258 reviews

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

Icelandair

6.9

Okay

733 reviews

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

British Airways

6.7

Okay

8,184 reviews

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

Avianca

6.5

Okay

2,547 reviews

JetBlue

7.1

Good

3,037 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Rashesh,Jul 2026

FLL - BDL

The entertainment is great. They announced that they charge for food and drinks but we're giving out for free

Related info for your journey

How long is the flight from London to San Juan?
Airlines like JetBlue, Icelandair, and British Airways fly from London to San Juan in about 13h. The time it takes to get you to your destination can typically vary by up to 20h 50m. The distance between London and San Juan is about 4201 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to San Juan round-trip?
Cheapflights users have booked flights from London to San Juan round-trip from £327. Other airlines that can offer you cheap pricing are JetBlue, from £417, and Icelandair, from £477. Virgin Atlantic is priced at 52% lower than the current average price of a flight leaving 3 months from now.
What are the most popular routes from London to San Juan?
The most popular route from London to San Juan is London Heathrow - San Juan Luis Munoz Marin Intl. You may also consider London Gatwick - San Juan Luis Munoz Marin Intl or London Stansted - San Juan Luis Munoz Marin Intl.
Where are the most common stopover locations when flying from London to San Juan?
The most popular stopover on flights from London to San Juan is Madrid.
What are some popular things to do or see while on a stopover in Madrid?
Spain Building, Puerta del Sol, and Plaza Mayor are the most popular attractions in Madrid if you're in need of something to do during your stopover. Spain Building, Puerta del Sol and Plaza Mayor are located about 8.5 mi, 8.4 mi, and 8.6 mi, respectively from Madrid Barajas if you are interested in checking them out. Those on a stopover in Madrid in need of a car hire can book one at Madrid Barajas for about £23.
Where are the least popular stopover locations for London to San Juan flights?
London to San Juan flights that have stopovers will least frequently stop in New York.
Can I find deals for flights from London to San Juan that include hotel bookings?
Yes. In addition to deals on London to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to San Juan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Juan.
Can I find deals for business class flights from London to San Juan?
Yes. Cheapflights offers flight deals from London 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 to San Juan?
Currently, February is the cheapest month in which you can book a flight from London to San Juan (average of £524). Flying from London to San Juan in December is currently the most expensive (average of £928). 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

Complete your trip

Flights by cabin class

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Other flights from London

Popular flights

Alternative routes for London 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

Manchester to Luis Munoz Marin Intl flights

Birmingham to Luis Munoz Marin Intl flights

Edinburgh to Luis Munoz Marin Intl flights

Newcastle upon Tyne to Luis Munoz Marin Intl flights

Heathrow to Aguadilla flights

Norwich to Luis Munoz Marin Intl flights

Top 5 airlines flying from London to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£327	Average£1,123	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
JetBlue	Cheapest£417	Average£738	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Icelandair	Cheapest£477	Average£784	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£760	Average£1,148	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£831	Average£1,006	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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

Cheapflights helps you search for flights from London to San Juan via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to San Juan.

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

Yes, we can. To see specific flights from London to San Juan with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from London to San Juan on Cheapflights with our Price Alert feature and get notified when better prices are available.

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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 to San Juan from £215

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to San Juan

Cheapest flights from London to San JuanExplore the most affordable flight options available from London to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Explore the most affordable flight options available from London to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from London to San JuanDiscover carefully curated flight deals from London to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Discover carefully curated flight deals from London to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Last-minute flights from London to San JuanDiscover last-minute flight deals from London to San Juan. Data last updated 22 August 2026 and is based on user searches.

Discover last-minute flight deals from London to San Juan. Data last updated 22 August 2026 and is based on user searches.

One-way flights from London to San JuanSearch for one-way flight options from London to San Juan. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

Search for one-way flight options from London to San Juan. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

Find flight deals from London to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from London to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from London with our price prediction graph.

Cheapflights Insights

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

How much does it cost for a return flight from London to San Juan?

Airfare is below average for this route at the moment.

London to San Juan flights typically cost between £647 and £812 in October.The cheapest return price found within the last 5 days was £511 on Multiple Airlines (1 Oct–4 Oct).

How far ahead should I book a flight from London to San Juan?

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing San Juan

Read through reviews of airlines operating flights from London to San Juan, such as JetBlue,Iberia, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to San Juan?

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

What are the most popular routes from London to San Juan?

Where are the most common stopover locations when flying from London to San Juan?

What are some popular things to do or see while on a stopover in Madrid?

Where are the least popular stopover locations for London to San Juan flights?

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

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

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

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

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

Complete your trip

Complete your trip to San Juan by adding a car hire and/or hotel booking to your travel itinerary.

Search flights from London to San Juan by cabin class

Find flights from London to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and San Juan flights

Browse other London and San Juan flight options. Last updated on 22 August 2026.

Other flights from London

Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on 22 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 5 airlines flying from London to San Juan

Fly with Cheapflights

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to San Juan
Explore the most affordable flight options available from London to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from London to San Juan
Discover carefully curated flight deals from London to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Last-minute flights from London to San Juan
Discover last-minute flight deals from London to San Juan. Data last updated 22 August 2026 and is based on user searches.

One-way flights from London to San Juan
Search for one-way flight options from London to San Juan. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

London to San Juan flights typically cost between £647 and £812 in October.
The cheapest return price found within the last 5 days was £511 on Multiple Airlines (1 Oct–4 Oct).