How long is the flight from London to San Juan?

Airlines like JetBlue, Icelandair, and TAP AIR PORTUGAL fly from London to San Juan in about 17h 18m. The time it takes to get you to your destination can typically vary by up to 11h 30m. The distance between London and San Juan is about 4188 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 £330. Other airlines that can offer you cheap pricing are JetBlue, from £418, and Icelandair, from £482. 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 City - 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 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 £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.

£273+ 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 4 September 2026.

Thu 1/1014:00 -

1 stop14h 13m

Sun 11/1010:39 -

1 stop18h 21m

Deal found 31/8£500

Fri 6/1112:35 -

1 stop18h 15m

Sat 7/1103:55 -

1 stop24h 20m

Deal found 2/9£501

Wed 23/914:00 -

1 stop29h 18m

Sun 27/902:57 -

1 stop26h 03m

Deal found 1/9£531

Wed 18/1109:50 -

1 stop21h 00m

Tue 1/1211:00 -

1 stop15h 50m

Deal found 31/8£534

Fri 6/1112:35 -

1 stop18h 15m

Tue 17/1107:23 -

1 stop19h 27m

Deal found 31/8£552

Fri 4/1212:35 -

1 stop18h 07m

Sat 12/1219:43 -

1 stop32h 32m

Deal found 31/8£553

Fri 25/908:40 -

1 stop18h 47m

Sun 11/1006:20 -

1 stop19h 10m

Deal found 29/8£567

Fri 6/1106:00 -

1 stop14h 40m

Tue 17/1118:10 -

1 stop13h 55m

Deal found 31/8£571

Fri 2/1008:15 -

1 stop34h 24m

Fri 9/1019:35 -

1 stop29h 55m

Deal found 1/9£576

Mon 21/914:00 -

1 stop24h 35m

Thu 8/1016:24 -

2 stops36h 36m

Deal found 1/9£580

Mon 21/908:40 -

1 stop32h 22m

Thu 8/1015:00 -

1 stop24h 45m

Deal found 1/9£582

Thu 17/908:15 -

1 stop16h 19m

Sun 20/906:00 -

1 stop33h 45m

Deal found 3/9£584

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 4 September 2026.

Tue 15/1212:20 -

1 stop17h 32m

Sat 30/111:06 -

1 stop18h 24m

Deal found 3/9£726

Sat 19/1219:55 -

2 stops32h 12m

Wed 30/1215:45 -

1 stop36h 00m

Deal found 29/8£748

Wed 18/1111:55 -

2 stops17h 18m

Tue 1/1213:59 -

2 stops16h 56m

Deal found 31/8£777

Sun 13/1210:40 -

2 stops28h 48m

Sun 31/116:40 -

2 stops23h 55m

Deal found 3/9£870

Thu 10/1207:40 -

1 stop17h 20m

Sat 19/1216:55 -

1 stop33h 00m

Deal found 29/8£1,001

Fri 20/1117:20 -

2 stops37h 14m

Tue 1/1206:01 -

2 stops23h 54m

Deal found 31/8£1,035

Wed 18/1106:50 -

2 stops21h 09m

Tue 1/1208:30 -

2 stops24h 10m

Deal found 31/8£1,041

Fri 5/219:40 -

2 stops25h 00m

Sat 13/221:35 -

2 stops30h 45m

Deal found 31/8£772

Thu 19/1112:20 -

1 stop19h 28m

Tue 1/1213:59 -

1 stop15h 31m

Deal found 31/8£853

Sun 13/1210:40 -

2 stops28h 48m

Fri 29/111:06 -

2 stops24h 39m

Deal found 3/9£876

Thu 10/1212:15 -

2 stops17h 37m

Sat 19/1213:55 -

2 stops25h 35m

Deal found 29/8£887

Tue 2/221:20 -

3 stops30h 30m

Sun 7/216:40 -

2 stops23h 55m

Deal found 2/9£826

Fri 20/1112:20 -

1 stop19h 28m

Tue 1/1215:00 -

1 stop14h 30m

Deal found 31/8£853

Sun 13/1210:40 -

2 stops28h 48m

Mon 1/211:06 -

2 stops24h 39m

Deal found 3/9£876

Fri 11/1221:45 -

2 stops26h 15m

Sat 19/1221:35 -

2 stops30h 45m

Deal found 1/9£839

Sun 13/1212:25 -

2 stops27h 03m

Sun 31/116:40 -

2 stops24h 55m

Deal found 3/9£877

Sun 18/1008:40 -

1 stop20h 09m

Mon 26/1012:56 -

1 stop16h 34m

Deal found 2/9£882

Fri 20/1106:50 -

2 stops21h 07m

Mon 30/1121:35 -

1 stop12h 40m

Deal found 31/8£1,070

Fri 16/1010:50 -

2 stops29h 39m

Mon 26/1012:56 -

2 stops23h 24m

Deal found 2/9£1,087

Wed 20/106:00 -

2 stops35h 20m

Thu 21/115:35 -

2 stops27h 05m

Deal found 30/8£878

Thu 19/1106:50 -

2 stops21h 07m

Tue 1/1208:30 -

2 stops24h 10m

Deal found 31/8£1,071

Fri 9/1010:50 -

2 stops29h 50m

Mon 19/1010:30 -

2 stops25h 10m

Deal found 3/9£1,097

Thu 31/1212:15 -

2 stops17h 12m

Tue 12/111:06 -

2 stops19h 44m

Deal found 30/8£929

Thu 19/1110:40 -

2 stops42h 00m

Tue 1/1206:16 -

2 stops29h 29m

Deal found 31/8£881

Thu 19/1107:40 -

1 stop13h 00m

Sun 29/1118:10 -

1 stop16h 05m

Deal found 31/8£1,107

Mon 14/1210:40 -

2 stops28h 48m

Sun 31/116:40 -

2 stops23h 55m

Deal found 3/9£890

Wed 18/1110:55 -

2 stops35h 45m

Tue 1/1206:01 -

2 stops23h 54m

Deal found 31/8£1,206

Thu 7/107:40 -

2 stops18h 57m

Thu 21/121:35 -

1 stop12h 25m

Deal found 1/9£1,119

Tue 2/217:20 -

2 stops30h 06m

Sun 7/208:15 -

2 stops21h 40m

Deal found 1/9£1,045

Mon 14/1210:40 -

2 stops28h 48m

Fri 29/111:06 -

2 stops24h 39m

Deal found 3/9£896

Find flight deals from London to San Juan

Round-trip from	£500
One-way from	£273
Popular in	December
Cheapest in	February
Average price	£637

1/10-11/10
2 total stops
32h 34m total
London to San Juan

Search Deals

5/11-31/12
2 total stops
25h 46m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£22 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

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Fri 6/11

12:35-14:43

1 stop30h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£291

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Tue 8/12

09:35-11:53

1 stop30h 18m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£297

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Tue 17/11

09:35-00:59

2 stops43h 24m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£320

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Sat 7/11

13:30-00:04

3 stops38h 34m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£323

LondonSan Juan

SEN London Southend - SJU San Juan Luis Munoz Marin Intl

SENSJU

London Southend

Thu 5/11

07:15-12:36

3 stops33h 21m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£329

LondonSan Juan

SEN London Southend - SJU San Juan Luis Munoz Marin Intl

SENSJU

London Southend

Mon 16/11

07:20-10:55

3 stops55h 35m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£353

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Sun 15/11

11:50-09:19

2 stops49h 29m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£364

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Wed 4/11

09:50-18:21

1 stop36h 31m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£365

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Tue 24/11

08:10-02:21

3 stops46h 11m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£380

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Sun 1/11

08:15-20:48

1 stop16h 33m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£389

Flights are sorted by cheapest return flights first.

Deals found on 3/9

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

LGW-SJU

LHR-SJU

LCY-SJU

STN-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

LCY-SJU

STN-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 £525). Flying from London to San Juan in December is currently the most expensive (average of £938). 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 £598 and £750 in October.
The cheapest return price found within the last 5 days was £500 on Multiple Airlines (1 Oct–11 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 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

2,380 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

2,380 reviews

TAP AIR PORTUGAL

7.2

Good

2,380 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

3,039 reviews

TAP AIR PORTUGAL

7.2

Good

2,380 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

3,248 reviews

TAP AIR PORTUGAL

7.2

Good

2,380 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

740 reviews

TAP AIR PORTUGAL

7.2

Good

2,380 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

2,556 reviews

TAP AIR PORTUGAL

7.2

Good

2,380 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, Icelandair, and TAP AIR PORTUGAL fly from London to San Juan in about 17h 18m. The time it takes to get you to your destination can typically vary by up to 11h 30m. The distance between London and San Juan is about 4188 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 £330. Other airlines that can offer you cheap pricing are JetBlue, from £418, and Icelandair, from £482. 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 City - 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 £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 £525). Flying from London to San Juan in December is currently the most expensive (average of £938). 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£330	Average£1,135	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
JetBlue	Cheapest£418	Average£747	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Icelandair	Cheapest£482	Average£844	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£768	Average£1,160	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£839	Average£1,047	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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Cheap flights from London to San Juan from £273

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. 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 4 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 4 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 4 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 4 September 2026.

Last-minute flights from London to San JuanDiscover last-minute flight deals from London to San Juan. Data last updated 4 September 2026 and is based on user searches.

Discover last-minute flight deals from London to San Juan. Data last updated 4 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 4 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 4 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 £598 and £750 in October.The cheapest return price found within the last 5 days was £500 on Multiple Airlines (1 Oct–11 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 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 4 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 4 September 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 4 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 4 September 2026.

Last-minute flights from London to San Juan
Discover last-minute flight deals from London to San Juan. Data last updated 4 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 4 September 2026.

London to San Juan flights typically cost between £598 and £750 in October.
The cheapest return price found within the last 5 days was £500 on Multiple Airlines (1 Oct–11 Oct).