Cheap Flights from London to San Juan from 512 €

Compare London to San Juan flight deals

Find the cheapest month or even day of the year to fly to San Juan

Book the best San Juan fare with no extra fees

Flight deals from London to San Juan

Looking for a cheap last-minute deal or the best return flight from London to San Juan? Find the lowest prices on one-way and return tickets right here.

San Juan.512 € per passenger.Departing Sun, 27 Apr, returning Thu, 1 May.Return flight with Norse Atlantic Airways (UK) and Spirit Airlines.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Sun, 27 Apr, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Spirit Airlines, departs from San Juan Luis Munoz Marin on Thu, 1 May, arriving in London Gatwick.Price includes taxes and charges.From 512 €, select.

San Juan.547 € per passenger.Departing Mon, 28 Apr, returning Wed, 30 Apr.Return flight with Norse Atlantic Airways (UK) and Spirit Airlines.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Mon, 28 Apr, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Spirit Airlines, departs from San Juan Luis Munoz Marin on Wed, 30 Apr, arriving in London Gatwick.Price includes taxes and charges.From 547 €, select.

San Juan.547 € per passenger.Departing Fri, 16 May, returning Sat, 24 May.Return flight with Norse Atlantic Airways (UK) and Frontier Airlines.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 16 May, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 24 May, arriving in London Gatwick.Price includes taxes and charges.From 547 €, select.

San Juan.676 € per passenger.Departing Mon, 1 Dec, returning Mon, 15 Dec.Return flight with jetBlue.Outbound indirect flight with jetBlue, departs from London Heathrow on Mon, 1 Dec, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Mon, 15 Dec, arriving in London Heathrow.Price includes taxes and charges.From 676 €, select.

San Juan.679 € per passenger.Departing Sun, 19 Oct, returning Sun, 26 Oct.Return flight with jetBlue.Outbound indirect flight with jetBlue, departs from London Gatwick on Sun, 19 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Sun, 26 Oct, arriving in London Heathrow.Price includes taxes and charges.From 679 €, select.

San Juan.683 € per passenger.Departing Tue, 27 May, returning Tue, 3 Jun.Return flight with Virgin Atlantic and Frontier Airlines.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Tue, 27 May, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Tue, 3 Jun, arriving in London Heathrow.Price includes taxes and charges.From 683 €, select.

San Juan.685 € per passenger.Departing Fri, 6 Jun, returning Sat, 14 Jun.Return flight with Norse Atlantic Airways (UK) and Spirit Airlines.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 6 Jun, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Spirit Airlines, departs from San Juan Luis Munoz Marin on Sat, 14 Jun, arriving in London Gatwick.Price includes taxes and charges.From 685 €, select.

San Juan.690 € per passenger.Departing Tue, 9 Sep, returning Tue, 16 Sep.Return flight with Norse Atlantic Airways (UK) and jetBlue.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Tue, 9 Sep, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Tue, 16 Sep, arriving in London Gatwick.Price includes taxes and charges.From 690 €, select.

Find the cheapest month to fly from London to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to San Juan flights are currently cheapest in April.

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Alternative London to San Juan routes

Looking for the cheapest, fastest or easiest route from London to San Juan? You could fly into the following airports instead.

London to San Juan: Flight information

The things to know before you go.

Cheapest flight found	512 €
Cheapest month to fly	April

Finding cheap flights from London to San Juan: Frequently asked questions

How many airports are there in San Juan?

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.

How much are return flights from London to San Juan?

The best price we found for a return flight from London to San Juan is 512 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from London to San Juan?

Currently, there are no airlines that fly direct from London to San Juan. But we found flights with one or more stops from 512 €.

How many flights are there a week from London to San Juan?

As of April 2025, there are no flights flying from London to San Juan.

When is the cheapest time to fly from London to San Juan?

The cheapest month to fly from London to San Juan is usually April 2025.

Which is the cheapest airport to fly into in San Juan?

If you're flying from London, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from 512 €.

Which upcoming date is cheapest to fly from London to San Juan on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to San Juan on Sunday, 27 April 2025.

Can I get a direct flight from London to San Juan?

No airlines currently offer direct flights between London and San Juan. Most routes have one or more stops.

How can I get the best flight deal from London to San Juan?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to San Juan?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in San Juan?

In April, the average temperature is usually around 26°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.

Which is the cheapest airline to fly from London to San Juan with?

The cheapest airline that flies to San Juan is Norse Atlantic Airways (UK) .

Travelling from London to San Juan: what you need to know

When organising your flight from London to San Juan, you'll have a good range of airports to leave from. Check out London Heathrow Airport (LHR) and London Gatwick Airport (LGW) for your departure options. Other possibilities include Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).
Luis Munoz Marin International Airport (SJU) is the primary hub where you can land in San Juan.
Leave plenty of time to catch your flight from London to San Juan. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.
You can expect longer queues during popular months like July and other peak periods. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a good idea.
If you have a passport from United Kingdom, you'll need an ETA to enter Puerto Rico. This applies when booking a cheap flight from London to San Juan for tourism purposes. Requirements may change if you're travelling for business or other reasons. Always check official visa guidelines before you make travel plans and definitely before flying.

Flying from London

London Heathrow Airport (LHR)

Stopovers are the perfect opportunity to take a travel break — and maybe even tour another city. When browsing flights from London to San Juan leaving from London Heathrow Airport, uncheck the 'Direct flights only' box to see where you can stop along the way. Consider one of these popular options:
- Logan International Airport (BOS)
- Grantley Adams International Airport (BGI)
- John F. Kennedy International Airport (JFK)
The journey from central London to LHR takes about 1 hour and 1 minute on public transport. If you drive, ride-share or get a cab, you'll cover the 31 kilometres in 57 minutes or so, depending on traffic.
Catching an early flight from London to San Juan? Avoid the stress of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these hotels close to London Heathrow Airport:

London Gatwick Airport (LGW)

Get the most out of your holiday with a stopover on your flight from London to San Juan. Visit family or friends or tick another city off your bucket list. Whatever you want to do, check out these stops between London Heathrow Airport and San Juan:
- Logan International Airport (BOS)
- Grantley Adams International Airport (BGI)
- John F. Kennedy International Airport (JFK)
You can get to LGW from the centre of London in about 1 hour and 19 minutes by car, depending on traffic. The journey on public transport takes roughly 1 hour and 26 minutes to cover the 80 kilometres or so.
Get a head start on your holiday with an additional night away from home. Before your flight from London to San Juan, stay in one of these hotels close to London Gatwick Airport:

Arriving in San Juan

Luis Munoz Marin International Airport (SJU)

Luis Munoz Marin International Airport (SJU) to the centre of San Juan takes about 11 minutes by car. It's approximately 8 kilometres away.
Getting there by public transport typically takes 56 minutes.
The last thing you need is a long journey to your hotel if you're getting in late on a flight from London to San Juan. Reserve one of these accommodation options near SJU instead:

Fernando Luis Ribas Dominicci Airport (SIG)

Fernando Luis Ribas Dominicci Airport (SIG) is roughly 8 kilometres from the centre of San Juan. After your flight from London to San Juan, expect a drive time of approximately 14 minutes to get to the heart of the city.
Travelling by public transport will take around 58 minutes.
After your flight from London to San Juan, kick back at a hotel near SIG. These are some comfortable options that'll help you get into relaxation mode:

How to find the cheapest flights from London to San Juan

The cheapest price we've found for a one-way ticket from London to San Juan is 225 €. For a return flight on this route, the best price is 512 €. Depending on when and how early you book, these fares may change.
It's a good idea to book in advance if you want to find cheap tickets from London to San Juan. That's because airlines change prices based on demand, which tends to rise closer to the departure date.
If you can be flexible with your travel plans, try using the 'Whole month' tool. It'll give you the cheapest price in every month when looking for your ticket from London to San Juan.
Log into your online account or use the app to set up a Price Alert. You'll be notified right away if there's a better deal on this route. It's simple to do, and it'll save you time checking for cheap tickets from London to San Juan every day.
Play around with filters to find your ideal trip. To see the 'Fastest,' 'Best' or 'Cheapest' flights from London to San Juan, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Best time to go to San Juan

May is the quietest month for flights from London to San Juan, while July is the most popular. Choose the ideal time to go to San Juan based on whether you want a bustling atmosphere or a more laid-back vibe.
Before you book a flight from London to San Juan, think about the type of weather you prefer. September is the warmest month in San Juan, with the temperature ranging from 23ºC to 33ºC.
If you like cooler conditions, book a cheap ticket from London to San Juan in February when temperatures average between 20ºC and 28ºC.

More about San Juan

Once you've booked your flight from London to San Juan, think about where to rest your head in this city. Make one of these options your base for exploring San Juan:
Castillo San Felipe del Morro and La Garita del morro de san juan bahia are just two of the big attractions to add to your San Juan travel itinerary. Continue your sightseeing adventures at Fortaleza Street.

Complete your San Juan trip with a car rental

Finding you a cheap flight from London to San Juan isn't the only thing we're good at. Check out our car rentals in San Juan and travel at your own pace. We find deals from trusted car rental providers and put them all in one place. You can instantly compare rates and then book with no fees.