How long is the flight from London to San Juan?

Airlines like JetBlue, TAP AIR PORTUGAL, and Turkish Airlines fly from London to San Juan in about 15h 08m. The time it takes to get you to your destination can typically vary by up to 27h 55m. 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 £420. Other airlines that can offer you cheap pricing are Icelandair, from £487, and Iberia, from £849. JetBlue is priced at 43% 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 British Airways 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 £19.

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.

£328+ 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 30 October 2026.

Wed 25/1109:50 -

2 stops19h 46m

Sat 28/1118:10 -

1 stop12h 40m

Deal found 27/10£574

Wed 25/1109:50 -

2 stops41h 41m

Tue 1/1221:35 -

1 stop12h 50m

Deal found 27/10£590

Sun 22/1109:40 -

2 stops23h 33m

Sat 28/1118:10 -

1 stop12h 40m

Deal found 27/10£593

Thu 26/1111:00 -

1 stop19h 24m

Sat 28/1118:10 -

1 stop12h 40m

Deal found 27/10£597

Tue 17/1106:00 -

2 stops21h 38m

Tue 24/1111:38 -

2 stops31h 02m

Deal found 28/10£599

Sun 8/1106:30 -

2 stops21h 08m

Thu 19/1116:52 -

1 stop15h 48m

Deal found 29/10£620

Mon 9/1120:25 -

2 stops31h 13m

Thu 19/1116:52 -

1 stop15h 48m

Deal found 28/10£621

Thu 12/1116:45 -

2 stops34h 53m

Thu 26/1111:38 -

2 stops24h 07m

Deal found 26/10£625

Thu 12/1107:25 -

1 stop17h 23m

Thu 26/1115:50 -

1 stop13h 40m

Deal found 27/10£625

Sat 21/1112:15 -

2 stops26h 18m

Tue 24/1103:42 -

2 stops35h 48m

Deal found 29/10£627

Wed 11/1107:25 -

1 stop17h 23m

Mon 16/1120:39 -

1 stop30h 16m

Deal found 26/10£630

Thu 26/1111:00 -

1 stop19h 24m

Mon 30/1121:35 -

1 stop11h 45m

Deal found 27/10£631

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 30 October 2026.

Sat 27/207:45 -

2 stops37h 10m

Fri 5/316:35 -

2 stops24h 15m

Deal found 26/10£575

Sat 27/212:20 -

1 stop15h 08m

Tue 2/316:58 -

1 stop12h 32m

Deal found 29/10£711

Fri 19/306:00 -

2 stops23h 24m

Wed 7/407:00 -

2 stops24h 45m

Deal found 29/10£875

Wed 25/1117:25 -

2 stops29h 15m

Fri 4/1214:45 -

2 stops21h 45m

Deal found 27/10£928

Fri 26/311:35 -

1 stop12h 25m

Sun 4/417:25 -

1 stop12h 20m

Deal found 29/10£1,052

Tue 10/1107:45 -

2 stops35h 18m

Tue 24/1118:10 -

1 stop16h 05m

Deal found 26/10£663

Mon 9/1117:50 -

2 stops33h 48m

Tue 24/1111:38 -

1 stop20h 57m

Deal found 29/10£669

Thu 12/1111:00 -

1 stop27h 15m

Wed 25/1103:55 -

1 stop22h 55m

Deal found 26/10£683

Wed 9/1209:20 -

1 stop14h 07m

Wed 16/1207:00 -

1 stop19h 55m

Deal found 25/10£833

Sat 27/206:00 -

2 stops24h 02m

Tue 2/306:50 -

2 stops25h 50m

Deal found 29/10£877

Thu 4/206:00 -

2 stops18h 00m

Sun 14/221:30 -

1 stop19h 20m

Deal found 27/10£684

Thu 12/1116:30 -

2 stops36h 43m

Thu 26/1106:05 -

2 stops35h 30m

Deal found 26/10£878

Thu 31/1210:55 -

2 stops26h 53m

Tue 12/106:01 -

2 stops23h 54m

Deal found 28/10£970

Thu 7/117:20 -

2 stops60h 34m

Thu 21/106:01 -

2 stops30h 19m

Deal found 26/10£971

Thu 12/1110:10 -

3 stops43h 03m

Thu 26/1115:50 -

2 stops20h 00m

Deal found 25/10£889

Sat 21/1109:05 -

2 stops21h 06m

Wed 25/1105:19 -

3 stops32h 31m

Deal found 29/10£748

Sat 27/318:30 -

2 stops43h 24m

Sun 4/405:10 -

2 stops36h 45m

Deal found 29/10£920

Thu 10/1207:45 -

1 stop16h 15m

Thu 17/1221:35 -

1 stop20h 25m

Deal found 26/10£780

Tue 1/1217:20 -

2 stops29h 04m

Tue 8/1206:01 -

2 stops23h 54m

Deal found 27/10£1,049

Wed 25/1116:35 -

2 stops61h 21m

Fri 4/1206:15 -

2 stops29h 30m

Deal found 26/10£925

Thu 12/1116:25 -

2 stops35h 13m

Thu 26/1121:35 -

1 stop12h 40m

Deal found 26/10£783

Fri 1/110:55 -

2 stops26h 53m

Fri 15/113:54 -

2 stops22h 26m

Deal found 29/10£1,097

Sun 7/212:25 -

2 stops25h 59m

Sun 14/217:00 -

2 stops20h 30m

Deal found 27/10£783

Sat 21/1116:35 -

2 stops36h 05m

Sat 28/1116:43 -

2 stops23h 57m

Deal found 28/10£950

Fri 11/1221:30 -

1 stop26h 30m

Sat 19/1218:10 -

1 stop16h 05m

Deal found 25/10£786

Mon 9/1107:30 -

2 stops29h 49m

Tue 24/1118:10 -

1 stop16h 05m

Deal found 29/10£789

Tue 10/1116:35 -

3 stops35h 03m

Mon 16/1106:00 -

3 stops28h 25m

Deal found 28/10£792

Mon 15/206:15 -

1 stop14h 25m

Sat 27/212:50 -

2 stops18h 25m

Deal found 29/10£812

Mon 18/113:40 -

2 stops29h 47m

Sat 23/115:53 -

2 stops19h 37m

Deal found 28/10£815

Mon 15/220:35 -

2 stops33h 13m

Sat 27/208:15 -

2 stops22h 35m

Deal found 29/10£821

Find flight deals from London to San Juan

Round-trip from	£565
One-way from	£328
Popular in	December
Cheapest in	February
Average price	£615

JetBlue
24/3-6/4
2 total stops
29h 15m total
London to San Juan

Search Deals

18/11-31/12
2 total stops
19h 09m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£29 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 October 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

Fri 13/11

20:50-12:36

3 stops43h 46m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£355

LondonSan Juan

LTN London Luton - SJU San Juan Luis Munoz Marin Intl

LTNSJU

London Luton

Wed 9/12

07:30-01:58

3 stops46h 28m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£370

LondonSan Juan

LTN London Luton - SJU San Juan Luis Munoz Marin Intl

LTNSJU

London Luton

Mon 7/12

14:50-01:58

2 stops39h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£373

LondonSan Juan

LTN London Luton - SJU San Juan Luis Munoz Marin Intl

LTNSJU

London Luton

Fri 13/11

15:35-12:36

2 stops49h 01m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£375

LondonSan Juan

LTN London Luton - SJU San Juan Luis Munoz Marin Intl

LTNSJU

London Luton

Wed 18/11

06:50-12:36

3 stops33h 46m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£417

LondonSan Juan

STN London Stansted - SJU San Juan Luis Munoz Marin Intl

STNSJU

London Stansted

Sat 7/11

14:30-23:38

3 stops37h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£419

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Fri 13/11

09:20-01:13

1 stop19h 53m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£422

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Thu 12/11

07:25-20:48

1 stop17h 23m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£425

LondonSan Juan

LGW London Gatwick - SJU San Juan Luis Munoz Marin Intl

LGWSJU

London Gatwick

Thu 5/11

11:00-23:38

3 stops40h 38m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£427

Fastest return journey

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 6/1

09:20-19:25

1 stop14h 05m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-05:00

Nonstop0h 00m

£429

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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

LTN-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

LTN-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 £530). Flying from London to San Juan in December is currently the most expensive (average of £976). 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 £621 and £834 in March.
The cheapest return price found within the last 5 days was £565 on JetBlue (24 Mar–6 Apr).

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

Booking 35 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

2,388 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

2,388 reviews

TAP AIR PORTUGAL

7.2

Good

2,388 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

3,077 reviews

TAP AIR PORTUGAL

7.2

Good

2,388 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

3,242 reviews

TAP AIR PORTUGAL

7.2

Good

2,388 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

764 reviews

TAP AIR PORTUGAL

7.2

Good

2,388 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

2,549 reviews

TAP AIR PORTUGAL

7.2

Good

2,388 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, TAP AIR PORTUGAL, and Turkish Airlines fly from London to San Juan in about 15h 08m. The time it takes to get you to your destination can typically vary by up to 27h 55m. 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 £420. Other airlines that can offer you cheap pricing are Icelandair, from £487, and Iberia, from £849. JetBlue is priced at 43% 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 £19.
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 £530). Flying from London to San Juan in December is currently the most expensive (average of £976). 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

Heathrow to Aguadilla flights

Edinburgh to Luis Munoz Marin Intl flights

Newcastle upon Tyne to Luis Munoz Marin Intl flights

Norwich to Luis Munoz Marin Intl flights

Top 4 airlines flying from London to San Juan

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£420	Average£646	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Icelandair	Cheapest£487	Average£679	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£849	Average£1,036	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£850	Average£1,082	FlexibilityNo cancel fee	On-time70%	Search British Airways 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 £328

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from London to San JuanDiscover last-minute flight deals from London to San Juan. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from London to San Juan. Data last updated 30 October 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 30 October 2026.

Search for one-way flight options from London to San Juan. Find affordable one-way fares based on user searches. Data last updated 30 October 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 £621 and £834 in March.The cheapest return price found within the last 5 days was £565 on JetBlue (24 Mar–6 Apr).

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

Booking 35 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from London to San Juan
Discover last-minute flight deals from London to San Juan. Data last updated 30 October 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 30 October 2026.

London to San Juan flights typically cost between £621 and £834 in March.
The cheapest return price found within the last 5 days was £565 on JetBlue (24 Mar–6 Apr).