Cheap flights from London to San Juan

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How to find the cheapest flight from
London (LON) to San Juan (SJU)

All the information you need to plan the best LON to SJU flight in 2021: compare London to San Juan flight prices with the expected peak season, weather and rainfall in San Juan.
LON - PR1
Price
£771 - £1,155
PR1
Temperature
25 - 28 °C
PR1
Precipitation
55 - 156 mm

Popular in

December

High demand for flights, 16% potential price rise

Cheapest in

March

Best time to find cheap flights, 20% potential price drop

Round-trip from

£560

From London (LON) to San Juan

One-way from

£161

One-way flight from London (LON) to San Juan

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from London to San Juan?

Travellers have found it’s best to book a flight 45 days in advance to save up to 35% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to San Juan 1-2 weeks in advance for as low as £690, or £774 for flights within the next 24 hours.

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

Flights from London to San Juan lean towards being more expensive in December. Prices are generally better when you fly from London to San Juan in March, with the cheapest ticket starting at £361.

When is the cheapest time to fly from London to San Juan (LON - PR1)?

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.

Cheap flights from London to San Juan in October, November 2021

The best prices found for LON to SJU flights in October, November
12 Nov - 6 Dec
£478pp
LHR
London Heathrow
JetBlue
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
JetBlue
 
1 STOP
LHR
London Heathrow
26 Nov - 8 Dec
£491pp
LCY
London City
Multiple airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
LCY
London City
15 Nov - 1 Dec
£494pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow

London to San Juan 2021 flight deals

Cheap flights to San Juan from London found for this year
12 Nov - 6 Dec
£478pp
LHR
London Heathrow
JetBlue
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
JetBlue
 
1 STOP
LHR
London Heathrow
26 Nov - 8 Dec
£491pp
LCY
London City
Multiple airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
LCY
London City
5 Dec - 14 Dec
£491pp
LGW
London Gatwick
JetBlue
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
JetBlue
 
1 STOP
LGW
London Gatwick

Last-minute flights from London to San Juan

Late deals on return flights to San Juan from London, departing today and this week
6 Nov - 6 Dec
£525pp
LHR
London Heathrow
Virgin Atlantic
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
5 Nov - 9 Nov
£525pp
LCY
London City
Virgin Atlantic
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
   
2 STOPS
LCY
London City
6 Nov - 5 Dec
£589pp
STN
London Stansted
Multiple airlines
     
3 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
     
3 STOPS
STN
London Stansted

One-way flights to San Juan from London

The cheapest one-way flights from London to San Juan
07:05 - 05:25
British Airways
1 stop
26h 20m
LHR - SJU
British Airways
£161
Netflights
09:15 - 05:25
British Airways
1 stop
24h 10m
LHR - SJU
British Airways
£162
Netflights
07:55 - 21:42
Multiple Airlines
2 stops
41h 47m
LGW - SJU
Multiple Airlines
£307
Combigo

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">San Juan</span> flights.

Flight FAQs

From London to San Juan

Which airlines flying from London to San Juan have flexible cancellations due to COVID-19?

Some of the carriers operating flights from London to San Juan that may be offering flexible cancellation policies are British Airways, United Airlines, and American Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from London to San Juan for under £500 on Cheapflights?

Yes, there are multiple flights from London to San Juan for under £500. The cheapest flight booked recently is on Multiple Airlines for just £409, but on average you can expect to pay £443.

Are there last-minute flights available from London to San Juan for under £600?

There are currently 20+ open flights from London to San Juan within the next 7 days for less than £600.

What is the cheapest airline to fly from London to San Juan return?

Cheapflights users have booked flights from London to San Juan from £413 return. JetBlue is priced at 41% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest flights from London to San Juan?

While on average a flight from London to San Juan is generally £1,043, our data shows the cheapest flight currently is £277. When looking at the most popular route, (London Heathrow - San Juan Luis Munoz Marin Intl), you can expect to pay £418 for that flight.

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 American Airlines, Avianca or British Airways as they are the most popular for this route.

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.

COVID Restrictions

View COVID Travel Restrictions for San Juan, Puerto Rico

Do I need a COVID test to fly to San Juan from London?

Information is based on travel restrictions from London to San Juan

Most visitors from London need to provide a negative COVID-19 test result and/or quarantine to enter San Juan.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) test taken 72 hours before departing to San Juan.

Quarantine requirements
Visitors from London are not required to quarantine after entering San Juan.

Documents
Travel Declaration Form - Must be completed prior to travel to Puerto Rico.


Do I need a test to fly back to London from San Juan?

Returning to London from San Juan

COVID-19 testing requirements
Visitors from San Juan must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from San Juan are not required to quarantine after entering London.

Hide COVID Travel Restrictions for San Juan, Puerto Rico

Destination information for San Juan

Things to know before you go - useful duration and weather info for your trip from London to San Juan.
Today's exchange rate
£1 = $1.38
Average temperature for October in San Juan
31.0 °C
Avg rainfall for October in San Juan
147.0 mm

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Airports servicing San Juan

San Juan Isla Grande (SIG)

Top 7 airlines flying from London to San Juan

The chart below displays the airlines Cheapflights users travelling from London to San Juan choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
American Airlines
£253 £692 No cancel fee 71%
Search American Airlines flights
British Airways
£276 £720 No cancel fee 70%
Search British Airways flights
Iberia
£324 £685 No cancel fee 77%
Search Iberia flights
United Airlines
£504 £625 No cancel fee 69%
Search United Airlines flights
Virgin Atlantic
£603 £809 No cancel fee 72%
Search Virgin Atlantic flights
Delta
£615 £846 No cancel fee N/A
Search Delta flights
Avianca
£615 £758 No cancel fee 71%
Search Avianca flights
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