Find flights
Airlines
Travel Guide

£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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
— SJU
20 Aug — 27 Aug1
1 adult

Flights to San Juan in 2025

Find the latest flights to San Juan in 2025, 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 15 August 2025.

Return from

£492

One-way from

£301

Popular in

July

Cheapest in

September

Average price

£766
16/9-20/9
  • 16/9-20/9
  • 2 total stops
  • 53h 45m total
  • London to San Juan
Search Deals
9/12
  • 9/12
  • 2 total stops
  • 29h 54m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£75 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for return flights in August 2025
Search Deals

Find flight deals to San Juan

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 15 August 2025.

Tue 16/913:05LGW - SJU
1 stop25h 51mMultiple Airlines
Sat 20/921:26SJU - LGW
1 stop27h 54mMultiple Airlines
Deal found 14/8£492
Mon 10/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Fri 14/1116:42SJU - LGW
1 stop13h 18mMultiple Airlines
Deal found 13/8£494
Wed 12/1107:25LHR - SJU
1 stop24h 23mJetBlue
Fri 21/1102:00SJU - LHR
1 stop14h 45mJetBlue
Deal found 13/8£496
Mon 13/1014:00LGW - SJU
1 stop29h 11mMultiple Airlines
Thu 16/1015:19SJU - LGW
1 stop13h 41mMultiple Airlines
Deal found 13/8£497
Fri 7/1114:00LGW - SJU
1 stop33h 21mMultiple Airlines
Fri 14/1110:57SJU - LGW
1 stop19h 03mMultiple Airlines
Deal found 13/8£499
Tue 16/908:15LHR - SJU
1 stop13h 40mJetBlue
Sat 20/918:05SJU - LHR
1 stop21h 40mJetBlue
Deal found 14/8£499
Tue 9/908:15LHR - SJU
1 stop19h 17mIcelandair
Wed 24/906:00SJU - LHR
2 stops19h 30mIcelandair
Deal found 13/8£500
Wed 3/908:15LHR - SJU
1 stop18h 09mIcelandair
Thu 18/913:00SJU - LHR
1 stop12h 30mIcelandair
Deal found 14/8£501
Tue 9/912:10LGW - SJU
1 stop29h 07mIcelandair
Wed 24/906:00SJU - LGW
2 stops22h 35mIcelandair
Deal found 13/8£501
Tue 4/1112:20LHR - SJU
1 stop19h 28mJetBlue
Tue 11/1109:30SJU - LHR
1 stop20h 00mJetBlue
Deal found 13/8£506
Tue 9/908:25LHR - SJU
2 stops19h 07mIcelandair
Sun 21/919:55SJU - LHR
1 stop29h 35mIcelandair
Deal found 14/8£510
Sat 27/908:25LHR - SJU
1 stop32h 55mJetBlue
Fri 3/1003:03SJU - LHR
1 stop12h 42mJetBlue
Deal found 13/8£513

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 15 August 2025.
Use the filters below to find and compare flights to San Juan that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 16/9

13:05-09:56

1 stop25h 51m

San Juan Luis Munoz Marin Intl

Sat 20/9

21:26-06:20

1 stop27h 54m

£492

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 10/11

14:00-02:54

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Fri 14/11

16:42-10:00

1 stop13h 18m

£494

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 12/11

07:25-03:48

1 stop24h 23m

San Juan Luis Munoz Marin Intl

Fri 21/11

02:00-20:45

1 stop14h 45m

£496

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 15/1

09:20-04:20

1 stop23h 00m

San Juan Luis Munoz Marin Intl

Sun 25/1

21:35-20:45

1 stop19h 10m

£496

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 13/10

14:00-14:11

1 stop29h 11m

San Juan Luis Munoz Marin Intl

Thu 16/10

15:19-10:00

1 stop13h 41m

£497

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 16/9

08:15-16:55

1 stop13h 40m

San Juan Luis Munoz Marin Intl

Sat 20/9

18:05-20:45

1 stop21h 40m

£499

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 7/11

14:00-19:21

1 stop33h 21m

San Juan Luis Munoz Marin Intl

Fri 14/11

10:57-10:00

1 stop19h 03m

£499

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 8/11

07:25-21:54

1 stop18h 29m

San Juan Luis Munoz Marin Intl

Tue 18/11

09:30-09:30

1 stop20h 00m

£499

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-06:30

2 stops19h 30m

£500

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 5/2

07:25-00:37

1 stop21h 12m

San Juan Luis Munoz Marin Intl

Sun 15/2

21:10-06:55

1 stop29h 45m

£500

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 57 results
1
2
3
...
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?

Use this chart to determine the optimal time to book a return flight from London to San Juan. Price data was last updated on 8 August 2025.

Booking 56 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 53 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 most popular airlines that fly to San Juan?

The most popular airlines flying from London to San Juan are Iberia, Finnair and Icelandair.

Finnair
Finnair
From £613
Iberia
Iberia
From £686
Icelandair
Icelandair
From £570
JetBlue
JetBlue
From £596

What are the cheapest airlines that fly to San Juan?

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

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 15 August 2025.
Get a feel of what it's like to fly with Finnair, JetBlue, andIcelandair 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.
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
JetBlue
7.2
Good
2,913 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Icelandair
7.0
Good
526 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Iberia
7.0
Good
2,882 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
British Airways
6.7
Okay
7,267 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

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 £157, however they can be found for as little as £149.

  • 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 40 minutes).

  • Which airport is closest to Viejo San Juan?

    f being close to Viejo San Juan is important to you, you’ll want to land at San Juan Luis Munoz Marin Intl Airport.

  • 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

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.

Airports serving San Juan

Book a flight to or from one of these San Juan airports.
Flights to Luis Munoz Marin Intl
Flights from Luis Munoz Marin Intl

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 to San Juan?

Cheapflights makes it easy to find San Juan flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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.

Can Cheapflights find flights to San Juan with no change fees?

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

Can Cheapflights notify me if prices for flights to San Juan become cheaper?

Not ready to book yet? You can track prices for flights to San Juan on Cheapflights with our Price Alerts feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.