Cheap flights from London to San Juan

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San Juan (SJU)
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The best prices from London to San Juan are usually found in March or January, booked 45 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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

LON - PR1
Price
£562 - £842
PR1
Temperature
28 - 32 °C
PR1
Rainfall
33 - 147 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

£562

From London to San Juan

One-way from

£289

One-way flight from London to San Juan

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to San Juan?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 20% on your flight compared to booking on days when demand is much higher.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 45 days in advance, which can save you up to 35% on flights from London to San Juan compared to booking the week you need them. Waiting 45 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £694. For sooner than that we have options available in the next 3 days from £777.

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

March can be a great time to fly to San Juan from London with a flight ticket averaging about £704. Cheapflights users have found deals in the month of March for as cheap as £363. The most expensive prices can be found in the month of December.

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

It’s typically best to fly out from London to San Juan in the morning. Doing so could potentially save you 7% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap flights from London to San Juan in April, May 2021

9 May - 16 May
£360pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
9 May - 16 May
£373pp
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
31 May - 13 Jun
£436pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Air France
 
1 STOP
LHR
London Heathrow

London to San Juan 2021 flight deals

9 May - 16 May
£360pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
20 Sep - 28 Sep
£361pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
9 Jun - 15 Jun
£368pp
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

Last-minute flights from London to San Juan

20 Apr - 30 Apr
£469pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
20 Apr - 30 Apr
£497pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
20 Apr - 30 Apr
£602pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

One-way flights to San Juan from London

14:50 - 08:10
Virgin Atlantic
1 stop
22h 20m
LHR - SJU
Virgin Atlantic
14:45 - 15:55
Iberia
1 stop
30h 10m
LHR - SJU
Iberia
£400
mytrip.com
07:00 - 19:08
Delta
2 stops
17h 08m
LHR - SJU
Delta
£410
Delta

Related info for your journey

Flight FAQs

From London to San Juan

Are flight prices decreasing from London to San Juan due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and San Juan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from London to San Juan to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Airline carriers are regularly disinfecting and sanitising their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from London to San Juan. Policies will vary by airline.

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 £365 on Cheapflights?

Yes, there are multiple flights from London to San Juan for under £365. The cheapest flight booked recently is on Virgin Atlantic for just £360, but on average you can expect to pay £395.

Are there direct flights from London to San Juan for under £365 on Cheapflights?

There are no direct flights from London to San Juan, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from London to San Juan for under £511?

There are currently 17+ open flights from London to San Juan within the next 7 days for less than £511.

Is London weather warmer or cooler than San Juan?

We forecast the temperature to be around the 32 °Cs in June, on average. The temperature in San Juan is generally hotter than in London. Book flights in a timely manner in correlation to your departure date.

How long does is the flight from London to San Juan?

Virgin Atlantic, Delta, and KLM can get you from London to San Juan in just under 13h 28m. Your travel time can differ by up to 4h 30m. This flight may include one or multiple stops.

What are the cheapest airlines to flying from London to San Juan return?

Flying on Virgin Atlantic is currently your cheapest option to San Juan, with prices starting at £361. Additional return tickets that might be worth considering are offered by KLM and Delta, with the lowest prices starting at £438 and £447, respectively. Virgin Atlantic is currently priced 48% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from London to San Juan one-way?

One-way options have recently been found by users for as low as £273 on Virgin Atlantic. Other airlines that offer cheap prices include KLM from £323 and Delta from £335 one-way.

Destination information for San Juan

Today's exchange rate
£1 = $1.38
Average temperature for April in San Juan
30.0 °C
Avg rainfall for April in San Juan
135.0 mm

Airports servicing London

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

Airports servicing San Juan

San Juan Isla Grande (SIG)

Top 7 airlines flying from London to San Juan

Airline Cheapest Average Flexibility On-time COVID-19 safety
United Airlines
£694 £861 No cancel fee 69%
Search United Airlines flights
Iberia
£446 £943 No cancel fee 77%
Search Iberia flights
American Airlines
£348 £953 No cancel fee 71%
Search American Airlines flights
British Airways
£380 £992 No cancel fee 70%
Search British Airways flights
Avianca
£847 £1,044 No cancel fee 71%
Search Avianca flights
Virgin Atlantic
£831 £1,114 No cancel fee 72%
Search Virgin Atlantic flights
Delta
£847 £1,165 No cancel fee N/A
Search Delta flights
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