Cheap Flights from San Juan to London
Browse current best options from San Juan. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
San Juan
RatePunk searches hundreds of travel sites at once for deals on flights to London
Prices updated 24 days ago
486,190 searches this week
171 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from San Juan to London
Explore current cheapest deals departing from San Juan to London
Round trip
Sort by: Cheapest
November 10 - November 15
SJU - London
$831
$586
Round trip
August 6 - August 16
SJU - London
$850
$739
Round trip
August 10 - August 15
SJU - London
$913
$752
Round trip
August 17 - August 27
SJU - London
$876
$776
Round trip
August 3 - August 19
SJU - London
$845
$777
Round trip
August 13 - August 20
SJU - London
$887
$778
Round trip
August 13 - August 22
SJU - London
$871
$786
Round trip
September 8 - September 18
SJU - London
$792
$792
Round trip
November 11 - November 15
SJU - London
$913
$800
Round trip
August 6 - August 10
SJU - London
$944
$807
Round trip
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Route Intelligence — 486,190 Searches this Week
Insights for flights from San Juan to London
How much is a round trip from San Juan to London
Regular price: $727 - $2,025
Prices are currently below the regular range.
The regular price range for flights from San Juan to London Luton is $727 to $2025. The current lowest deal is $586 with Aer Lingus, for travel from Nov 10-Nov 15.
now $586
Low $727
High $2,025
The cheapest time to fly from San Juan to London
The cheapest month to fly from San Juan to London is January, with a median price of $496. The most expensive month is July, with a median price of $1243. Prices are generally lower from January to December.
January
Flights from $496
July
Flights from $1,243
Direct flights from San Juan to London
United Airlines
KLM
Frontier Airlines
JetBlue Airways
Last-minute flights going from San Juan to London
Thu, Jul 2
SJU - London
San Juan (SJU) - London (LHR)
JetBlue Airways
$829
$995
One-way
Fri, Jul 3
SJU - London
San Juan (SJU) - London (LHR)
KLM
$834
$1,035
One-way
Fri, Jul 3
SJU - London
San Juan (SJU) - London (LHR)
Air France
$893
$1,057
One-way
Fri, Jul 3
SJU - London
San Juan (SJU) - London (LHR)
Air France
$797
$1,057
One-way
Sat, Jul 4
SJU - London
San Juan (SJU) - London (LHR)
JetBlue Airways
$828
$995
One-way
Sat, Jul 4
SJU - London
San Juan (SJU) - London (LHR)
JetBlue Airways
$882
$1,035
One-way
Biggest price drops on these dates for flights from San Juan to London
Nov 10 - Nov 15
$831 → $586
30%
Aug 10 - Aug 15
$913 → $752
18%
Aug 6 - Aug 10
$944 → $807
15%
Nov 11 - Nov 15
$913 → $800
12%
Popular Airports to fly from San Juan to London
San Juan - London route insights
💸 Price insights
Recent fares are below the typical level
Recent fares from San Juan to London are below the typical level of $769.
📅 Best time to fly
January is historically the cheapest month to fly
Historically, January is the cheapest month to fly, with a median price of $496.
⏱️ Flight duration
Connecting flights take 26h 35m on average
Flights from San Juan to London typically involve connecting flights, with a median duration of 26h 35m.
✈️ Airlines & availability
No direct flights available
There are no direct flights available from San Juan to London; all routes include at least one stop.
🏆 Airline highlight
United Airlines offers many connecting flights
United Airlines has 16 connecting deals, making it a frequent option for this route.
🎯 Booking tip
Deals appear frequently for this route
Deals for flights from San Juan to London appear frequently, averaging 1.03 deals per day.
San Juan main airports to depart from
Luis Muñoz Marín International (SJU)
Luis Muñoz Marín International Airport is a good option for flights from San Juan to London.
📍 ~10 km from San Juan (reachable by car)
💸 Flights from ~$586
Fernando Luis Ribas Dominicci (SIG)
Fernando Luis Ribas Dominicci Airport is an alternative for flights from San Juan to London.
📍 ~2 km from San Juan (reachable by car)
💸 Flights from ~$586
London main airports to arrive at
Luton (LTN)
Luton Airport offers a budget-friendly option for flights from San Juan to London.
📍 ~45 km from city center (reachable by car)
💸 Flights from ~$586
Gatwick (LGW)
Gatwick Airport is a convenient choice for travelers arriving in London from San Juan.
📍 ~40 km from city center (reachable by car)
💸 Flights from ~$603
Heathrow (LHR)
Heathrow Airport provides a major gateway to London for flights arriving from San Juan.
📍 ~25 km from city center (reachable by car)
💸 Flights from ~$611
London City (LCY)
London City Airport is ideal for quick access to central London from San Juan.
📍 ~10 km from city center (reachable by car)
💸 Flights from ~$850
London Southend (SEN)
London Southend Airport is an alternative arrival point for flights to the London area.
📍 ~60 km from city center (reachable by car)
💸 Flights from ~$767
London Stansted (STN)
London Stansted Airport serves as another option for flights arriving in London from San Juan.
📍 ~50 km from city center (reachable by car)
💸 Flights from ~$633
Airports nearby London used as alternative
Birmingham (BHX)
Birmingham Airport is a major international hub with a wide variety of long-haul and short-haul destinations.
📍 ~150 km from London (reachable by rail)
💸 Flights from ~$787
Southampton (SOU)
Southampton Airport is the closest alternative airport to London with a direct rail link.
📍 ~100 km from London (reachable by rail)
💸 Flights from ~$718
Bristol (BRS)
Bristol Airport offers a large selection of low-cost carrier routes across Europe.
📍 ~170 km from London (reachable by coach or rail)
💸 Flights from ~$777
East Midlands (EMA)
East Midlands Airport has a strong presence of budget airlines offering competitive pricing.
📍 ~170 km from London (reachable by car)
💸 Flights from ~$856
Bournemouth (BOH)
Bournemouth Airport is an alternative for travelers in South West London with a less crowded environment.
📍 ~150 km from London (reachable by car)
💸 Flights from ~$1074
Business & First Class Flight Deals to London
Discover luxury on the budget with premium cabin class on flights from San Juan to London.
Elite
Best Elite deals to London
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From SJU
Elite
Aug 15
London, United Kingdom
92% AI deal score
$5,272
$3,072
Save $2,200
From SJU
Elite
Aug 02
London, United Kingdom
80% AI deal score
$5,443
$4,784
Save $659
From SJU
Elite
Aug 09
London, United Kingdom
79% AI deal score
$5,354
$4,784
Save $570
From SJU
Elite
Jul 25
London, United Kingdom
79% AI deal score
$5,544
$5,173
Save $371
From SJU
Elite
Nov 21
London, United Kingdom
79% AI deal score
$6,235
$5,479
Save $756
From SJU
Elite
Jul 13
London, United Kingdom
78% AI deal score
$6,615
$6,035
Save $580
From SJU
Elite
Aug 21
London, United Kingdom
77% AI deal score
$5,290
$5,179
Save $111
From SJU
Elite
Jul 13
London, United Kingdom
77% AI deal score
$6,477
$6,228
Save $249
From SJU
Elite
Jul 13
London, United Kingdom
74% AI deal score
$7,032
From SJU
Elite
Nov 20
London, United Kingdom
71% AI deal score
$7,181
From SJU
Elite
Sep 14
London, United Kingdom
69% AI deal score
$69,567
From SJU
Elite
Sep 07
London, United Kingdom
69% AI deal score
$70,268
From SJU
Elite
Jun 21
London, United Kingdom
69% AI deal score
$7,303