How long is the flight from London to San Juan?

Airlines like JetBlue, Avianca, and TAP AIR PORTUGAL fly from London to San Juan in about 19h 53m. The time it takes to get you to your destination can typically vary by up to 27h 40m. The distance between London and San Juan is about 4179 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 £414. Other airlines that can offer you cheap pricing are Icelandair, from £486, and British Airways, from £846. JetBlue is priced at 41% 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, Iberia or Icelandair 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 de Cibeles 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 de Cibeles are located about 8.5 mi, 8.4 mi, and 7.9 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 £18.

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.

£325+ 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 20 September 2026.

Thu 29/1009:40 -

1 stop17h 59m

Wed 11/1116:52 -

1 stop15h 43m

Deal found 17/9£540

Tue 3/1109:40 -

1 stop17h 58m

Tue 10/1116:52 -

1 stop15h 43m

Deal found 16/9£556

Thu 1/1010:55 -

1 stop20h 18m

Sat 10/1011:54 -

1 stop15h 11m

Deal found 17/9£558

Thu 29/1010:00 -

2 stops17h 39m

Wed 11/1116:52 -

2 stops18h 53m

Deal found 18/9£561

Sun 1/1118:40 -

2 stops32h 58m

Sun 8/1106:00 -

2 stops31h 50m

Deal found 17/9£561

Sun 1/1115:35 -

1 stop25h 01m

Tue 17/1116:52 -

1 stop15h 43m

Deal found 20/9£567

Tue 3/1110:00 -

2 stops17h 38m

Tue 10/1116:52 -

2 stops18h 53m

Deal found 16/9£570

Sun 1/1112:20 -

1 stop28h 06m

Mon 9/1107:00 -

1 stop19h 55m

Deal found 18/9£573

Wed 4/1110:00 -

2 stops17h 38m

Wed 11/1116:52 -

2 stops18h 53m

Deal found 20/9£578

Wed 4/1106:40 -

3 stops34h 45m

Wed 11/1108:45 -

3 stops29h 45m

Deal found 20/9£579

Thu 1/1008:40 -

1 stop32h 22m

Sat 10/1019:35 -

1 stop29h 55m

Deal found 18/9£583

Sun 1/1109:45 -

1 stop14h 15m

Sun 8/1121:35 -

1 stop17h 05m

Deal found 18/9£602

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 20 September 2026.

Wed 4/1109:20 -

1 stop19h 53m

Wed 11/1111:20 -

1 stop18h 10m

Deal found 20/9£602

Sat 24/1022:05 -

1 stop23h 50m

Thu 29/1012:50 -

1 stop21h 45m

Deal found 19/9£759

Sat 27/205:55 -

1 stop14h 45m

Sun 14/318:10 -

1 stop13h 40m

Deal found 16/9£779

Mon 18/121:35 -

3 stops41h 53m

Mon 1/206:01 -

2 stops29h 44m

Deal found 19/9£888

Wed 4/1107:30 -

2 stops21h 06m

Wed 11/1119:35 -

1 stop21h 00m

Deal found 20/9£998

Thu 29/1017:25 -

2 stops31h 23m

Wed 11/1107:00 -

2 stops22h 10m

Deal found 18/9£1,004

Wed 25/1107:35 -

2 stops19h 01m

Fri 4/1215:17 -

1 stop12h 58m

Deal found 20/9£1,050

Tue 3/1109:20 -

1 stop19h 53m

Tue 10/1111:20 -

1 stop18h 10m

Deal found 17/9£613

Thu 29/1012:20 -

1 stop27h 06m

Wed 11/1113:55 -

1 stop15h 35m

Deal found 18/9£646

Fri 15/121:35 -

3 stops40h 47m

Sun 24/110:43 -

2 stops25h 02m

Deal found 18/9£888

Thu 7/110:10 -

3 stops28h 12m

Thu 21/106:01 -

2 stops29h 49m

Deal found 20/9£909

Wed 25/1116:35 -

2 stops47h 33m

Fri 4/1206:15 -

2 stops29h 30m

Deal found 20/9£888

Tue 3/1106:50 -

2 stops21h 46m

Tue 10/1113:00 -

1 stop13h 20m

Deal found 19/9£1,004

Thu 29/1006:50 -

2 stops20h 07m

Wed 11/1111:35 -

2 stops17h 15m

Deal found 17/9£1,057

Sun 28/217:20 -

2 stops37h 22m

Mon 8/319:59 -

2 stops33h 56m

Deal found 16/9£1,062

Mon 26/1021:35 -

2 stops54h 38m

Sun 1/1107:00 -

2 stops46h 50m

Deal found 19/9£917

Thu 22/1006:00 -

2 stops22h 49m

Fri 30/1021:35 -

1 stop20h 15m

Deal found 16/9£1,013

Sat 6/211:25 -

2 stops40h 29m

Wed 10/208:30 -

2 stops32h 55m

Deal found 16/9£1,063

Thu 7/117:20 -

2 stops30h 29m

Thu 21/113:54 -

2 stops22h 26m

Deal found 18/9£1,067

Wed 25/1118:30 -

2 stops58h 10m

Fri 4/1213:55 -

2 stops27h 40m

Deal found 16/9£932

Thu 12/1110:55 -

2 stops42h 18m

Mon 16/1118:17 -

2 stops35h 38m

Deal found 20/9£1,032

Thu 7/107:40 -

2 stops18h 57m

Thu 21/110:32 -

2 stops18h 18m

Deal found 18/9£1,144

Sun 28/209:05 -

2 stops32h 26m

Mon 8/316:27 -

2 stops24h 08m

Deal found 16/9£952

Thu 31/1210:55 -

2 stops28h 49m

Tue 12/108:10 -

2 stops21h 45m

Deal found 17/9£1,052

Fri 19/307:40 -

1 stop13h 00m

Wed 7/413:25 -

2 stops15h 55m

Deal found 20/9£1,145

Thu 22/1010:35 -

2 stops42h 14m

Sat 31/1006:00 -

2 stops23h 50m

Deal found 16/9£957

Sun 8/1120:05 -

2 stops31h 49m

Tue 24/1121:35 -

1 stop12h 25m

Deal found 19/9£1,058

Fri 4/1221:35 -

3 stops41h 53m

Sat 12/1213:05 -

2 stops27h 35m

Deal found 20/9£957

Thu 29/1010:55 -

2 stops30h 51m

Wed 11/1107:00 -

2 stops22h 55m

Deal found 18/9£1,061

Fri 16/1010:50 -

2 stops29h 39m

Fri 23/1013:00 -

2 stops22h 50m

Deal found 17/9£1,067

Find flight deals from London to San Juan

Round-trip from	£540
One-way from	£325
Popular in	December
Cheapest in	February
Average price	£687

29/10-11/11
2 total stops
33h 42m total
London to San Juan

Search Deals

14/11-31/12
3 total stops
42h 51m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£25 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Mon 18/1

18:00-02:49

3 stops36h 49m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£351

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Tue 5/1

15:20-15:42

3 stops52h 22m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£371

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Thu 3/12

15:40-01:18

3 stops37h 38m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£381

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Thu 26/11

12:20-01:17

1 stop16h 57m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£386

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Sat 21/11

07:45-09:53

3 stops54h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£388

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Mon 16/11

08:05-20:48

1 stop16h 43m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£389

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Sun 15/11

12:20-00:30

1 stop16h 10m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£389

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Sun 22/11

07:45-08:39

2 stops28h 54m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£390

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Fri 27/11

09:20-19:35

1 stop14h 15m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£391

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Mon 23/11

09:20-00:40

1 stop19h 20m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£391

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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

LHR-SJU

STN-SJU

LGW-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

LHR-SJU

STN-SJU

LGW-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 £528). Flying from London to San Juan in December is currently the most expensive (average of £964). 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 £595 and £742 in October.
The cheapest return price found within the last 5 days was £540 on Multiple Airlines (29 Oct–11 Nov).

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 TAP AIR PORTUGAL,JetBlue, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

JetBlue

7.1

Good

3,033 reviews

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

Iberia

7.0

Good

3,254 reviews

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

Icelandair

6.9

Okay

747 reviews

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

Avianca

6.5

Okay

2,546 reviews

TAP AIR PORTUGAL

7.2

Good

2,377 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

Related info for your journey

How long is the flight from London to San Juan?
Airlines like JetBlue, Avianca, and TAP AIR PORTUGAL fly from London to San Juan in about 19h 53m. The time it takes to get you to your destination can typically vary by up to 27h 40m. The distance between London and San Juan is about 4179 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 £414. Other airlines that can offer you cheap pricing are Icelandair, from £486, and British Airways, from £846. JetBlue is priced at 41% 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 de Cibeles 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 de Cibeles are located about 8.5 mi, 8.4 mi, and 7.9 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 £18.
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 £528). Flying from London to San Juan in December is currently the most expensive (average of £964). 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

Other flight options

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

Stansted to Luis Munoz Marin Intl flights

London City 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

Norwich to Luis Munoz Marin Intl flights

Heathrow to Aguadilla flights

Top 4 airlines flying from London to San Juan

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£414	Average£698	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Icelandair	Cheapest£486	Average£852	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£846	Average£1,077	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£894	Average£1,079	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Fly with Cheapflights

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 £325

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. 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 20 September 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 20 September 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 20 September 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 20 September 2026.

Last-minute flights from London to San JuanDiscover last-minute flight deals from London to San Juan. Data last updated 20 September 2026 and is based on user searches.

Discover last-minute flight deals from London to San Juan. Data last updated 20 September 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 20 September 2026.

Search for one-way flight options from London to San Juan. Find affordable one-way fares based on user searches. Data last updated 20 September 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 £595 and £742 in October.The cheapest return price found within the last 5 days was £540 on Multiple Airlines (29 Oct–11 Nov).

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 TAP AIR PORTUGAL,JetBlue, andIberia. 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 20 September 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 20 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 4 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 20 September 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 20 September 2026.

Last-minute flights from London to San Juan
Discover last-minute flight deals from London to San Juan. Data last updated 20 September 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 20 September 2026.

London to San Juan flights typically cost between £595 and £742 in October.
The cheapest return price found within the last 5 days was £540 on Multiple Airlines (29 Oct–11 Nov).