Find flights
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to San Juan from £244

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
26 Feb — 5 Mar1
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 21 February 2025.

Round-trip from

£503

One-way from

£244

Popular in

August

Cheapest in

January

Average price

£589
Finnair
  • Finnair
  • 28/4-2/5
  • 3 total stops
  • 32h 11m total
  • United Kingdom to San Juan
1/4
  • 1/4
  • 3 total stops
  • 47h 22m total
  • United Kingdom to San Juan
Highest demand for flights based on searches. 9% potential increase in price (£58 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in February 2025

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 21 February 2025.

Tue 1/413:00LGW - SJU
2 stops31h 12mMultiple Airlines
Tue 8/409:28SJU - LGW
1 stop19h 32mMultiple Airlines
Deal found 20/2£505
Sat 1/319:50LHR - SJU
1 stop19h 01mMultiple Airlines
Tue 4/322:31SJU - LHR
1 stop17h 29mMultiple Airlines
Deal found 20/2£506
Thu 20/307:25LHR - SJU
1 stop17h 25mJetBlue
Thu 27/304:00SJU - LHR
1 stop12h 45mJetBlue
Deal found 19/2£525
Tue 1/411:40STN - SJU
3 stops31h 27mMultiple Airlines
Tue 8/421:51SJU - STN
3 stops31h 49mMultiple Airlines
Deal found 20/2£530
Thu 13/306:15LHR - SJU
1 stop17h 30mFinnair
Sun 23/315:30SJU - LHR
1 stop16h 50mFinnair
Deal found 20/2£541
Thu 6/1108:25LHR - SJU
1 stop23h 55mIcelandair
Fri 14/1101:59SJU - LHR
1 stop14h 46mIcelandair
Deal found 20/2£606
Tue 1/413:05LCY - SJU
3 stops30h 02mMultiple Airlines
Mon 7/403:05SJU - LCY
3 stops33h 25mMultiple Airlines
Deal found 20/2£613
Thu 6/1112:25LHR - SJU
2 stops19h 55mTAP AIR PORTUGAL
Sat 15/1106:15SJU - LHR
2 stops25h 10mTAP AIR PORTUGAL
Deal found 20/2£669
Fri 5/1210:40LGW - SJU
2 stops20h 37mTAP AIR PORTUGAL
Fri 12/1207:10SJU - LGW
2 stops28h 35mTAP AIR PORTUGAL
Deal found 19/2£684
Tue 9/913:00LGW - SJU
2 stops17h 15mIcelandair
Wed 24/914:30SJU - LGW
2 stops19h 10mIcelandair
Deal found 20/2£695
Sat 1/1106:15MAN - SJU
2 stops17h 55mFinnair
Sat 8/1114:50SJU - MAN
2 stops19h 10mFinnair
Deal found 20/2£705
Fri 12/919:15MAN - SJU
2 stops29h 55mIberia
Fri 19/915:55SJU - MAN
2 stops20h 25mIberia
Deal found 20/2£736

Find flights from United Kingdom to San Juan within your budget

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 21 February 2025.

Fly from

United Kingdom

Fly to

San Juan

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 1/4

13:00-15:12

2 stops31h 12m

San Juan Luis Munoz Marin Intl

Tue 8/4

09:28-10:00

1 stop19h 32m

£505

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 1/3

19:50-10:51

1 stop19h 01m

San Juan Luis Munoz Marin Intl

Tue 4/3

22:31-20:00

1 stop17h 29m

£506

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 20/3

07:25-20:50

1 stop17h 25m

San Juan Luis Munoz Marin Intl

Thu 27/3

04:00-20:45

1 stop12h 45m

£525

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 1/4

11:40-14:07

3 stops31h 27m

San Juan Luis Munoz Marin Intl

Tue 8/4

21:51-10:40

3 stops31h 49m

£530

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 13/3

06:15-19:45

1 stop17h 30m

San Juan Luis Munoz Marin Intl

Sun 23/3

15:30-12:20

1 stop16h 50m

£541

LondonSan Juan

LCY - SJU

LCYSJU

London City

Tue 1/4

13:05-14:07

3 stops30h 02m

San Juan Luis Munoz Marin Intl

Mon 7/4

03:05-17:30

3 stops33h 25m

£613

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 1/4

11:55-20:57

1 stop14h 02m

San Juan Luis Munoz Marin Intl

Mon 7/4

00:55-20:45

1 stop14h 50m

£627

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 3/3

10:40-14:57

2 stops32h 17m

San Juan Luis Munoz Marin Intl

Tue 11/3

15:25-15:45

2 stops20h 20m

£698

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 28/2

06:00-00:56

2 stops22h 56m

San Juan Luis Munoz Marin Intl

Tue 11/3

15:25-21:35

2 stops26h 10m

£702

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 28/4

15:40-11:57

2 stops25h 17m

San Juan Luis Munoz Marin Intl

Fri 2/5

11:55-11:45

2 stops18h 50m

£722

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 59 results
1
2
3
...
6

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.

Travel insights for flights from United Kingdom to San Juan

Get recent, data-driven insights about flights from United Kingdom to San Juan including ideal travel times, pricing trends, and more.

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 21 February 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.

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 21 February 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from United Kingdom to San Juan to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very Good

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.
  • What are the cheapest airlines to fly from United Kingdom to San Juan one-way?

    One-way options have recently been found by users for as low as £510 on Iberia. Other airlines that offer cheap prices include JetBlue from £545 and Avianca from £574 one-way.

  • What are the most popular routes 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£451Average£668FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£451Average£709FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£484Average£740FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
JetBlueCheapest£493Average£673FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£534Average£791FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£557Average£858FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£699Average£1,063FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£893Average£1,192FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Virgin AtlanticCheapest£903Average£1,085FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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.

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.