£301+ Cheap flights to San Juan

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
— SJU
27 May — 3 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to San Juan in 2026

Enter your travel dates to find the best prices.

Cheapest flights to San Juan
Explore the most affordable flight options available to San Juan. Find the lowest fares based on data from user searches, with prices last updated on 27 April 2026.

Fri 30/1007:25
LHR
-
SJU
1 stop21h 18m
JetBlue
Mon 9/1107:00
SJU
-
LHR
1 stop19h 55m
JetBlue
Deal found 23/4£578
Mon 2/1112:20
LHR
-
SJU
1 stop17h 23m
JetBlue
Thu 12/1111:45
SJU
-
LHR
1 stop17h 45m
JetBlue
Deal found 24/4£579
Thu 5/1112:20
LHR
-
SJU
1 stop28h 03m
JetBlue
Wed 11/1114:00
SJU
-
LHR
1 stop15h 30m
JetBlue
Deal found 25/4£580
Sat 14/1107:25
LHR
-
SJU
1 stop17h 20m
JetBlue
Sat 21/1120:20
SJU
-
LHR
1 stop20h 25m
JetBlue
Deal found 26/4£581
Wed 16/908:15
LHR
-
SJU
1 stop16h 17m
JetBlue
Wed 23/919:00
SJU
-
LHR
1 stop20h 45m
JetBlue
Deal found 23/4£605
Thu 4/612:20
LGW
-
SJU
1 stop14h 22m
JetBlue
Tue 9/605:01
SJU
-
LGW
1 stop23h 34m
JetBlue
Deal found 26/4£609
Thu 7/508:40
LHR
-
SJU
1 stop23h 01m
JetBlue
Sun 10/517:54
SJU
-
LHR
1 stop21h 51m
JetBlue
Deal found 23/4£620
Sat 7/1112:20
LHR
-
SJU
1 stop17h 23m
JetBlue
Wed 18/1120:00
SJU
-
LHR
1 stop21h 40m
JetBlue
Deal found 25/4£623
Mon 1/612:20
LGW
-
SJU
1 stop14h 22m
JetBlue
Sun 7/605:01
SJU
-
LGW
1 stop23h 34m
JetBlue
Deal found 24/4£626
Sun 7/612:20
LGW
-
SJU
1 stop14h 22m
TAP AIR PORTUGAL
Sun 14/606:00
SJU
-
LGW
1 stop22h 35m
TAP AIR PORTUGAL
Deal found 23/4£630
Fri 22/512:20
LGW
-
SJU
1 stop16h 59m
JetBlue
Sun 31/505:01
SJU
-
LGW
1 stop23h 34m
JetBlue
Deal found 25/4£633
Fri 8/511:55
LHR
-
SJU
1 stop17h 15m
JetBlue
Mon 11/512:00
SJU
-
LHR
1 stop27h 45m
JetBlue
Deal found 24/4£637

Find flight deals to San Juan

Find the latest flights to San Juan in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 27 April 2026.

Return from

£605

One-way from

£301

Popular in

July

Cheapest in

February

Average price

£748
JetBlue
  • JetBlue
  • 16/9-23/9
  • 2 total stops
  • 37h 02m total
  • London to San Juan
31/5
  • 31/5
  • 1 total stop
  • 25h 18m total
  • London to San Juan
Highest demand for flights based on searches. 11% potential increase in price (£91 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£30 potential savings vs. average return price).
Average for return flights in April 2026

Cheapflights Fare Finder

 
Locate flights to San Juan that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 27 April 2026.
Use the filters below to find and compare flights to San Juan that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/6

08:40-21:42

1 stop18h 02m

San Juan Luis Munoz Marin Intl

Wed 10/6

20:06-20:45

1 stop19h 39m

£674

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 7/6

08:40-21:42

1 stop18h 02m

San Juan Luis Munoz Marin Intl

Wed 10/6

20:06-20:45

1 stop19h 39m

£675

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 2/7

08:15-00:13

1 stop20h 58m

San Juan Luis Munoz Marin Intl

Mon 13/7

21:10-20:45

1 stop18h 35m

£748

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 6/6

08:40-22:12

1 stop18h 32m

San Juan Luis Munoz Marin Intl

Sat 13/6

15:34-09:30

1 stop12h 56m

£782

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 14/10

16:25-11:28

2 stops48h 03m

San Juan Luis Munoz Marin Intl

Sun 18/10

06:12-09:45

2 stops22h 33m

£790

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 9/10

12:05-13:08

2 stops30h 03m

San Juan Luis Munoz Marin Intl

Mon 19/10

06:12-09:45

2 stops22h 33m

£793

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 16/10

10:35-13:08

2 stops31h 33m

San Juan Luis Munoz Marin Intl

Sun 25/10

10:45-15:45

2 stops25h 00m

£816

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 11/5

22:05-17:10

1 stop24h 05m

San Juan Luis Munoz Marin Intl

Sat 23/5

18:35-15:35

1 stop16h 00m

£817

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 16/7

12:20-01:55

1 stop18h 35m

San Juan Luis Munoz Marin Intl

Thu 23/7

16:55-09:35

1 stop11h 40m

£847

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 10/6

22:05-11:25

1 stop18h 20m

San Juan Luis Munoz Marin Intl

Tue 8/9

13:35-07:15

1 stop12h 40m

£860

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to San Juan

When is the best time to book a flight to San Juan?

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

How long is the flight to San Juan?

On average, a flight from London to San Juan takes 17 hours 21 minutes. Flights to San Juan from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the cheapest airlines that fly to San Juan?

The cheapest airlines flying from London to San Juan are Virgin Atlantic, JetBlue and Finnair.

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 27 April 2026.
Get a feel of what it's like to fly with JetBlue,Icelandair, andIberia to Puerto Rico by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Entertainment

7.2

Crew

7.9

Overall

7.2

Boarding

7.3

Comfort

7.5

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

FAQs about flying to San Juan

San Juan climate

The climate is tropical with summer temperatures in the 18-35 degree range. Thunderstorms are likely between April and November and hurricane season runs June to November. Further inland, temperatures drop a couple of degrees.

Getting around San Juan

Buses run in some, but not all areas of the city. There are taxis, but you’ll have to negotiate a price with the driver based on your destination. Rental cars are available as well, but make sure you have your ID handy. Some streets are not as well marked as others.

Local Airport

Luis Munoz Marin International Airport (SJU) is located 9 miles (14 km) east of San Juan.

What is good to know if travelling to San Juan?

  • One venue for Puerto Rico’s Latino chic is surprising — the Museo de Arte. Some Puerto Ricans come to the art museum at least once a week, and not just for its fine collection of Puerto Rican art. They also come for productions in the 400-seat theatre. And trendy locals can be seen strolling the museum’s lovely five-acre garden. 
  • San Juan has done a great job of adapting old buildings to new uses. La Princesa, for centuries one of the most feared prisons in the Caribbean, now houses the Puerto Rico Tourism Company. It features an exhibit of art by Puerto Ricans, which is free to the public.
  • Another example of reuse is the 19th-century insane asylum, the Antiguo Manicomio Insular, which is now the home of the Puerto Rican Academy of Fine Arts, with its lovely courtyard fountains surrounded by elegant iron fences.
  • Can I find cheaper flights to San Juan if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to San Juan on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to San Juan?

    Based on reviews from Cheapflights users, Virgin Atlantic is rated the highest out of the airlines that fly to San Juan.

  • How much is a return flight to San Juan?

    A return flight to San Juan will typically cost around £277, however they can be found for as little as £193.

  • Where does the fastest flight to San Juan depart from?

    For those looking to save time traveling to San Juan, London offers the quickest one-way flight (12 hours 35 minutes).

  • Does San Juan Luis Munoz Marin Intl have car hire?

    Yes. Those touching down at San Juan Luis Munoz Marin Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to San Juan Luis Munoz Marin Intl?

    Yes. San Juan Luis Munoz Marin Intl has hotels nearby for those requiring accommodations. San Juan Airport Hotel is the closest property to San Juan Luis Munoz Marin Intl (0.0 mi away from San Juan Luis Munoz Marin Intl).

See more FAQs

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Airports serving San Juan

Book a flight to or from one of these San Juan airports.

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Why should you use Cheapflights to find cheap flight tickets 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 to San Juan.

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Yes! Cheapflights helps users easily find flights to San Juan with no change fees.

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