Cheap flights from London to San Juan from £320
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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
The best prices from London to San Juan are usually found in January or September, 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 21 February 2025.
Round-trip from | £505 |
---|---|
One-way from | £320 |
Popular in | August |
Cheapest in | January |
Average price | £589 |
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 21 February 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 21 February 2025.
Find flights from London to San Juan within your budget
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 21 February 2025.
Fly from
Fly to
Route
Depart
Return
Price
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Tue 1/4
13:00-15:12
2 stops31h 12m
San Juan Luis Munoz Marin Intl
Tue 8/4
09:28-10:00
1 stop19h 32m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sat 8/3
19:50-09:51
1 stop18h 01m
San Juan Luis Munoz Marin Intl
Tue 11/3
09:44-06:30
1 stop16h 46m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Thu 20/3
07:25-20:50
1 stop17h 25m
San Juan Luis Munoz Marin Intl
Thu 27/3
04:00-20:45
1 stop12h 45m
LondonSan Juan
STN - SJU
STNSJU
London Stansted
Tue 1/4
11:40-14:07
3 stops31h 27m
San Juan Luis Munoz Marin Intl
Tue 8/4
21:51-10:40
3 stops31h 49m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Thu 13/3
06:15-19:45
1 stop17h 30m
San Juan Luis Munoz Marin Intl
Sun 23/3
15:30-12:20
1 stop16h 50m
LondonSan Juan
LCY - SJU
LCYSJU
London City
Tue 1/4
13:05-14:07
3 stops30h 02m
San Juan Luis Munoz Marin Intl
Mon 7/4
03:05-17:30
3 stops33h 25m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Tue 1/4
11:55-20:57
1 stop14h 02m
San Juan Luis Munoz Marin Intl
Mon 7/4
00:55-20:45
1 stop14h 50m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Mon 3/3
10:40-14:57
2 stops32h 17m
San Juan Luis Munoz Marin Intl
Tue 11/3
15:25-15:45
2 stops20h 20m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Mon 3/3
13:40-14:57
2 stops29h 17m
San Juan Luis Munoz Marin Intl
Tue 11/3
15:25-17:30
2 stops22h 05m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Mon 28/4
15:40-11:57
2 stops25h 17m
San Juan Luis Munoz Marin Intl
Fri 2/5
11:55-11:45
2 stops18h 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.
Travel insights for flights from London to San Juan
Get recent, data-driven insights about flights from London to San Juan including ideal travel times, pricing trends, and more.
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 14 February 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 21 February 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 21 February 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.
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Crew
Comfort
Entertainment
Boarding
Food
Reviews
Aaron,Oct 2024
LAX - LHR
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.
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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 21 February 2025.
Fly with Cheapflights
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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.