Cheap flights from the United Kingdom to San Juan from £255
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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from United Kingdom to San Juan
Keep the following information in mind while searching for United Kingdom to San Juan flight deals. Data was last updated 12 July 2025.
Round-trip from | £485 |
---|---|
One-way from | £255 |
Popular in | July |
Cheapest in | September |
Average price | £936 |
Find flight deals from United Kingdom to San Juan
Cheapest flights from United Kingdom to San JuanExplore the most affordable flight options available from United Kingdom to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 July 2025.
Explore the most affordable flight options available from United Kingdom to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from United Kingdom 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 12 July 2025.
Use the filters below to find and compare flights from the United Kingdom to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Wed 3/9
08:15-16:52
1 stop13h 37m
San Juan Luis Munoz Marin Intl
Wed 17/9
12:50-09:30
1 stop15h 40m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Thu 6/11
08:25-18:59
1 stop14h 34m
San Juan Luis Munoz Marin Intl
Sat 15/11
18:51-20:45
2 stops21h 54m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Sat 20/9
12:10-16:05
1 stop32h 55m
San Juan Luis Munoz Marin Intl
Fri 26/9
19:50-09:35
1 stop32h 45m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Wed 20/8
12:10-00:49
1 stop17h 39m
San Juan Luis Munoz Marin Intl
Wed 27/8
08:50-09:35
1 stop19h 45m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Sat 20/9
14:00-00:44
1 stop15h 44m
San Juan Luis Munoz Marin Intl
Thu 25/9
01:59-10:00
1 stop27h 01m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sat 15/11
08:00-22:22
2 stops18h 22m
San Juan Luis Munoz Marin Intl
Thu 20/11
19:35-21:20
1 stop21h 45m
LondonSan Juan
LGW - SJU
LGWSJU
London Gatwick
Tue 9/9
10:35-12:07
2 stops30h 32m
San Juan Luis Munoz Marin Intl
Wed 24/9
12:50-14:00
2 stops20h 10m
LondonSan Juan
LCY - SJU
LCYSJU
London City
Fri 12/9
09:25-14:11
3 stops33h 46m
San Juan Luis Munoz Marin Intl
Mon 15/9
01:59-17:30
3 stops34h 31m
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Fri 7/11
12:25-03:49
2 stops19h 24m
San Juan Luis Munoz Marin Intl
Sat 15/11
12:10-11:25
2 stops19h 15m
ManchesterSan Juan
MAN - SJU
MANSJU
Manchester
Sun 2/11
11:25-03:49
2 stops20h 24m
San Juan Luis Munoz Marin Intl
Sun 9/11
06:15-10:35
2 stops24h 20m
Best time to book a flight from United Kingdom to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from United Kingdom with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from the United Kingdom to San Juan
What is the cheapest month to book a flight from United Kingdom to San Juan?
Currently, April is the cheapest month in which you can book a flight from United Kingdom to San Juan (average of £631). Flying from United Kingdom 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 GB to SJU?
Find hourly flight availability from United Kingdom 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 12 July 2025.
When flying from United Kingdom to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 12 July 2025.
Read through reviews of airlines operating flights from the United Kingdom to San Juan, such as Delta, KLM, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Crew
Overall
Boarding
Comfort
Entertainment
Food
Reviews
pilar,May 2025
RSW - ATL
Related info for your journey
Find useful and relevant information for your journey from United Kingdom 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
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Alternative routes for United Kingdom to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from United Kingdom to San Juan
Discover the top 9 airlines that operate flights from United Kingdom 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 12 July 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 United Kingdom to San Juan?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to San Juan. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from United Kingdom to San Juan?
Cheapflights helps you find that perfect flight to San Juan from United Kingdom by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from United Kingdom to San Juan with no change fees?
Yes! Cheapflights helps users easily find flights from United Kingdom to San Juan with no change fees.
Can Cheapflights notify me if prices for flights from United Kingdom to San Juan become cheaper?
Yes, Cheapflights offers price alerts on United Kingdom to San Juan flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.