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Cheap flights from the United Kingdom to San Juan from £286

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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
3 Sep — 10 Sep1
1 adult

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 29 August 2025.

Round-trip from

£485

One-way from

£286

Popular in

December

Cheapest in

September

Average price

£773
9/10-16/10
  • 9/10-16/10
  • 2 total stops
  • 35h 42m total
  • United Kingdom to San Juan
Search Deals
14/11
  • 14/11
  • 1 total stop
  • 16h 54m total
  • United Kingdom to San Juan
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from United Kingdom to San Juan

Cheapest flights from United Kingdom to San Juan
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 29 August 2025.

Thu 9/1014:00LGW - SJU
1 stop16h 44mMultiple Airlines
Thu 16/1006:22SJU - LGW
1 stop18h 58mMultiple Airlines
Deal found 28/8£485
Thu 9/1014:00LGW - SJU
1 stop16h 44mMultiple Airlines
Sat 18/1006:22SJU - LGW
1 stop18h 58mMultiple Airlines
Deal found 28/8£486
Tue 14/1014:00LGW - SJU
1 stop27h 15mMultiple Airlines
Fri 17/1006:22SJU - LGW
1 stop18h 58mMultiple Airlines
Deal found 28/8£487
Thu 25/913:05LGW - SJU
1 stop25h 51mMultiple Airlines
Sun 28/921:26SJU - LGW
1 stop27h 54mMultiple Airlines
Deal found 27/8£488
Thu 9/1014:40LGW - SJU
2 stops29h 44mMultiple Airlines
Wed 22/1006:22SJU - LGW
1 stop18h 58mMultiple Airlines
Deal found 28/8£497
Thu 6/1114:00LGW - SJU
1 stop23h 52mMultiple Airlines
Fri 14/1106:00SJU - LGW
2 stops24h 00mMultiple Airlines
Deal found 28/8£508
Thu 25/920:25LHR - SJU
1 stop18h 31mMultiple Airlines
Wed 8/1006:22SJU - LHR
1 stop19h 03mMultiple Airlines
Deal found 28/8£508
Thu 9/1014:00LGW - SJU
1 stop16h 44mMultiple Airlines
Sun 19/1002:49SJU - LGW
1 stop26h 11mMultiple Airlines
Deal found 28/8£508
Mon 3/1113:00LGW - SJU
1 stop32h 54mMultiple Airlines
Wed 12/1117:51SJU - LGW
2 stops36h 09mMultiple Airlines
Deal found 28/8£510
Mon 10/1113:00LGW - SJU
1 stop18h 03mMultiple Airlines
Thu 13/1103:59SJU - LGW
2 stops22h 01mMultiple Airlines
Deal found 27/8£511
Tue 14/1014:00LGW - SJU
1 stop27h 15mMultiple Airlines
Sun 19/1006:22SJU - LGW
1 stop18h 58mMultiple Airlines
Deal found 28/8£513
Thu 9/1011:55LHR - SJU
1 stop33h 47mJetBlue
Thu 16/1013:25SJU - LHR
1 stop15h 05mJetBlue
Deal found 28/8£519

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 29 August 2025.
Use the filters below to find and compare flights from the United Kingdom to San Juan that are best for you.

Fly from

United Kingdom

Fly to

San Juan

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Thu 16/10

06:22-06:20

1 stop18h 58m

£485

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 11/11

13:00-17:54

1 stop32h 54m

San Juan Luis Munoz Marin Intl

Fri 14/11

09:00-06:00

1 stop17h 00m

£485

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Sat 18/10

06:22-06:20

1 stop18h 58m

£486

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Wed 22/10

06:22-06:20

1 stop18h 58m

£486

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Tue 21/10

06:22-06:20

1 stop18h 58m

£486

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 14/10

14:00-12:15

1 stop27h 15m

San Juan Luis Munoz Marin Intl

Fri 17/10

06:22-06:20

1 stop18h 58m

£487

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 14/10

14:00-12:15

1 stop27h 15m

San Juan Luis Munoz Marin Intl

Thu 16/10

06:22-06:20

1 stop18h 58m

£487

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 25/9

13:05-09:56

1 stop25h 51m

San Juan Luis Munoz Marin Intl

Sun 28/9

21:26-06:20

1 stop27h 54m

£488

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 9/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Fri 17/10

06:22-06:20

1 stop18h 58m

£493

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 25/9

20:25-09:56

1 stop18h 31m

San Juan Luis Munoz Marin Intl

Wed 8/10

06:22-06:25

1 stop19h 03m

£508

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 60 results
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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.
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 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 29 August 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 29 August 2025.
Read through reviews of airlines operating flights from the United Kingdom to San Juan, such as Finnair, JetBlue, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
JetBlue
7.2
Good
2,920 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
537 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Iberia
7.0
Good
2,894 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,320 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Boarding

7.6

Comfort

7.5

Crew

8.1

Food

6.7

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

  • How long is the flight from United Kingdom to San Juan?

    Airlines like JetBlue, TAP AIR PORTUGAL, and Aer Lingus fly from United Kingdom to San Juan in about 33h 47m. The time it takes to get you to your destination can typically vary by up to 4h 42m. The distance between United Kingdom and San Juan is about 4179 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from United Kingdom to San Juan?

    While some choose either London Gatwick - San Juan Luis Munoz Marin Intl or London City - San Juan Luis Munoz Marin Intl, London Heathrow - San Juan Luis Munoz Marin Intl is the most popular route from United Kingdom to San Juan.

  • Can I find deals for flights from United Kingdom to San Juan that include hotel bookings?

    Yes. In addition to deals on United Kingdom to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to San Juan.

  • Can I find deals for business class flights from United Kingdom to San Juan?

    Yes. Cheapflights offers flight deals from United Kingdom to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

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.

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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£342Average£970FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£435Average£572FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£448Average£720FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£452Average£610FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£508Average£841FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£535Average£917FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£670Average£984FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£766Average£1,082FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£861Average£951FlexibilityNo cancel feeOn-time75%
Search KLM flights

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.

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