Cheap flights from London to San Juan from £207
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from London to San Juan are usually found in September or January, booked 56 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Cheap flight deals from London to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.
Round-trip from | £498 |
---|---|
One-way from | £207 |
Popular in | December |
Cheapest in | September |
Average price | £585 |
Find 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 25 March 2025.
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 25 March 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from London to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 March 2025.
Use the filters below to find and compare flights from London to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Tue 9/9
12:10-01:45
2 stops18h 35m
San Juan Luis Munoz Marin Intl
Wed 24/9
11:30-09:35
2 stops17h 05m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Tue 9/9
07:45-18:30
1 stop15h 45m
San Juan Luis Munoz Marin Intl
Wed 24/9
13:55-10:35
1 stop15h 40m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Wed 3/9
11:30-18:30
1 stop12h 00m
San Juan Luis Munoz Marin Intl
Thu 18/9
08:30-09:25
1 stop19h 55m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Tue 9/9
08:15-01:45
1 stop22h 30m
San Juan Luis Munoz Marin Intl
Tue 23/9
03:15-20:45
1 stop12h 30m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Sun 4/5
10:00-08:26
1 stop27h 26m
San Juan Luis Munoz Marin Intl
Mon 5/5
00:54-19:10
3 stops37h 16m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Wed 23/4
08:25-00:06
1 stop20h 41m
San Juan Luis Munoz Marin Intl
Tue 29/4
03:28-20:45
1 stop12h 17m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sat 3/5
19:40-10:00
1 stop19h 20m
San Juan Luis Munoz Marin Intl
Thu 8/5
06:20-06:30
1 stop19h 10m
LondonSan Juan
STN - SJU
STNSJU
London Stansted
Mon 1/9
06:05-18:30
1 stop17h 25m
San Juan Luis Munoz Marin Intl
Thu 11/9
20:20-18:55
1 stop17h 35m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Sat 30/8
12:10-01:31
1 stop18h 21m
San Juan Luis Munoz Marin Intl
Wed 10/9
12:55-09:35
1 stop15h 40m
LondonSan Juan
LCY - SJU
LCYSJU
London City
Wed 23/4
08:45-22:34
2 stops18h 49m
San Juan Luis Munoz Marin Intl
Wed 30/4
14:40-12:30
2 stops16h 50m
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
Everything you need to know about your flight from London to San Juan
How far ahead should I book a flight from London to San Juan?
Use this chart to determine the optimal time to book a return flight from London to San Juan. Price data was last updated on 21 March 2025.
Booking 56 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.
What is the cheapest month to book a flight from London to San Juan?
Currently, April is the cheapest month in which you can book a flight from London to San Juan (average of £631). Flying from London to San Juan in July is currently the most expensive (average of £1,027). 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.
What is the cheapest time of day to fly from LON to SJU?
Find hourly flight availability from London to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 March 2025.
It’s optimal to fly from London to San Juan in the morning. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from London to San Juan?
Use this chart to determine the cheapest time to fly return from London to San Juan. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their London to San Juan flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in San Juan by month
Plan your trip to San Juan by taking into account the average rainfall totals by month.
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.
Temperature in San Juan by month
Plan your trip to San Juan by taking into account the average temperature totals by month.
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).
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated 25 March 2025.
To help decide which airline to fly from London to San Juan, see what other customers have to say about Delta, KLM and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from London to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
Top 6 airlines flying from London to San Juan
Discover the top 6 airlines that operate flights from London to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 March 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
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.