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

Airlines like JetBlue, Avianca, and Icelandair fly from United Kingdom to San Juan in about 13h 40m. The time it takes to get you to your destination can typically vary by up to 7h 52m. 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 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 £328 on Avianca. Other airlines that offer cheap prices include Iberia from £375 and British Airways from £604 one-way.

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.

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).

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.

What are the most popular airlines that fly from United Kingdom to San Juan?

Finnair, JetBlue and British Airways are the most popular airlines when flying 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.

£312+ Cheap Flights from the United Kingdom to San Juan

Cheap flight deals from United Kingdom to San Juan

Round-trip from	£492
One-way from	£312
Popular in	July
Cheapest in	September
Average price	£534

1/10-5/10
3 total stops
40h 24m total
United Kingdom to San Juan

Search Deals

24/9
3 total stops
43h 05m total
United Kingdom to San Juan

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£70 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 round-trip flights in September 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 18 September 2025.

Wed 1/1013:05LGW - SJU

1 stop17h 53mMultiple Airlines

Sun 5/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£492

Thu 2/1014:00LGW - SJU

1 stop15h 54mMultiple Airlines

Wed 8/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£493

Tue 30/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Tue 7/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£496

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Thu 9/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£498

Tue 7/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Wed 8/1006:22SJU - LGW

2 stops22h 38mMultiple Airlines

Deal found 16/9£498

Fri 3/1013:05LGW - SJU

1 stop17h 53mMultiple Airlines

Sun 5/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£501

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Sat 4/1006:44SJU - LGW

2 stops18h 36mMultiple Airlines

Deal found 16/9£503

Tue 14/1008:15LHR - SJU

1 stop13h 27mIcelandair

Tue 21/1006:00SJU - LHR

2 stops19h 30mIcelandair

Deal found 16/9£503

Tue 14/1019:50LGW - SJU

2 stops35h 12mMultiple Airlines

Tue 21/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£506

Wed 1/1008:15LHR - SJU

1 stop13h 40mJetBlue

Thu 9/1021:25SJU - LHR

1 stop18h 20mJetBlue

Deal found 16/9£506

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Mon 13/1009:00SJU - LGW

2 stops44h 00mMultiple Airlines

Deal found 16/9£507

Tue 30/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Wed 8/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£508

Best flights from United Kingdom to San Juan
Discover carefully curated flight deals from United Kingdom to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Wed 1/1008:15LHR - SJU

1 stop13h 40mJetBlue

Thu 9/1021:25SJU - LHR

1 stop18h 20mJetBlue

Deal found 16/9£506

Thu 2/1014:00LGW - SJU

1 stop15h 54mMultiple Airlines

Thu 9/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£509

Mon 2/321:40LHR - SJU

1 stop17h 55mAvianca

Tue 3/318:30SJU - LHR

1 stop16h 05mAvianca

Deal found 17/9£549

Fri 17/1008:25LHR - SJU

2 stops21h 32mIcelandair

Sun 26/1005:10SJU - LHR

2 stops24h 20mIcelandair

Deal found 17/9£569

Mon 6/1014:40MAN - SJU

1 stop29h 14mAer Lingus

Fri 17/1018:05SJU - MAN

2 stops32h 30mAer Lingus

Deal found 16/9£642

Thu 29/117:10MAN - SJU

2 stops35h 06mTAP AIR PORTUGAL

Mon 9/207:00SJU - MAN

2 stops29h 15mTAP AIR PORTUGAL

Deal found 17/9£648

Thu 27/1107:30LHR - SJU

2 stops18h 52mUnited Airlines

Sun 14/1208:10SJU - LHR

2 stops18h 30mUnited Airlines

Deal found 15/9£728

Tue 20/106:45NCL - SJU

2 stops18h 20mBritish Airways

Sat 7/214:35SJU - NCL

2 stops16h 05mBritish Airways

Deal found 16/9£827

Tue 7/1010:00LCY - SJU

2 stops18h 56mKLM

Thu 16/1017:43SJU - LCY

2 stops18h 37mKLM

Deal found 16/9£844

Wed 1/1006:00BHX - SJU

2 stops46h 47mVirgin Atlantic

Sat 4/1018:00SJU - BHX

2 stops33h 20mVirgin Atlantic

Deal found 17/9£984

Thu 13/1106:15NWI - SJU

2 stops20h 58mDelta

Mon 17/1107:15SJU - NWI

2 stops21h 50mDelta

Deal found 15/9£996

Tue 30/913:05LGW - SJU

1 stop17h 53mMultiple Airlines

Thu 9/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£510

Fri 3/1008:15LHR - SJU

1 stop18h 09mJetBlue

Thu 9/1021:25SJU - LHR

1 stop18h 20mJetBlue

Deal found 16/9£510

Fri 3/1008:15LHR - SJU

1 stop18h 09mJetBlue

Tue 7/1013:25SJU - LHR

1 stop15h 05mJetBlue

Deal found 16/9£510

Wed 8/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Wed 15/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£513

Mon 6/1012:10EDI - SJU

1 stop29h 17mJetBlue

Fri 17/1020:22SJU - EDI

1 stop32h 48mJetBlue

Deal found 16/9£511

Fri 7/1114:00LGW - SJU

2 stops30h 23mMultiple Airlines

Mon 10/1106:00SJU - LGW

3 stops34h 35mMultiple Airlines

Deal found 17/9£524

Thu 22/117:10MAN - SJU

2 stops35h 06mTAP AIR PORTUGAL

Sun 1/206:15SJU - MAN

2 stops30h 00mTAP AIR PORTUGAL

Deal found 17/9£648

Sat 28/214:15MAN - SJU

1 stop35h 20mAer Lingus

Mon 9/306:20SJU - MAN

1 stop20h 30mAer Lingus

Deal found 16/9£654

Fri 21/1109:20LHR - SJU

2 stops20h 37mIcelandair

Sat 29/1122:19SJU - LHR

1 stop18h 26mIcelandair

Deal found 16/9£661

Thu 6/1107:40STN - SJU

1 stop16h 15mMultiple Airlines

Mon 10/1121:40SJU - STN

1 stop12h 25mMultiple Airlines

Deal found 17/9£525

Thu 6/1117:10MAN - SJU

2 stops38h 07mTAP AIR PORTUGAL

Sat 22/1106:07SJU - MAN

2 stops31h 08mTAP AIR PORTUGAL

Deal found 16/9£651

Sun 19/1014:40MAN - SJU

1 stop15h 07mAer Lingus

Sat 25/1014:25SJU - MAN

2 stops20h 50mAer Lingus

Deal found 17/9£658

Wed 10/1206:30LHR - SJU

2 stops19h 52mUnited Airlines

Sun 14/1202:05SJU - LHR

1 stop15h 15mUnited Airlines

Deal found 16/9£730

Tue 30/913:05LGW - SJU

1 stop17h 53mMultiple Airlines

Sun 5/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£534

Fri 7/1111:25MAN - SJU

2 stops20h 23mTAP AIR PORTUGAL

Sat 22/1106:07SJU - MAN

2 stops31h 08mTAP AIR PORTUGAL

Deal found 15/9£659

Tue 7/1013:30LHR - SJU

2 stops28h 04mUnited Airlines

Fri 17/1013:30SJU - LHR

1 stop12h 45mUnited Airlines

Deal found 16/9£730

Tue 7/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Thu 16/1003:40SJU - LGW

2 stops21h 40mMultiple Airlines

Deal found 16/9£539

Mon 6/1006:00NCL - SJU

2 stops24h 58mMultiple Airlines

Fri 17/1006:22SJU - NCL

2 stops23h 53mMultiple Airlines

Deal found 16/9£540

Thu 13/1116:55NWI - SJU

2 stops48h 01mVirgin Atlantic

Mon 17/1118:35SJU - NWI

2 stops34h 30mVirgin Atlantic

Deal found 16/9£995

Last-minute flights from United Kingdom to San Juan
Discover last-minute flight deals from United Kingdom to San Juan. Data last updated 18 September 2025 and is based on user searches.

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Thu 9/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£498

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Sat 4/1006:44SJU - LGW

2 stops18h 36mMultiple Airlines

Deal found 16/9£503

Mon 29/914:00LGW - SJU

1 stop29h 11mMultiple Airlines

Mon 13/1009:00SJU - LGW

2 stops44h 00mMultiple Airlines

Deal found 16/9£507

Tue 30/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Tue 7/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£496

Tue 30/913:05LGW - SJU

1 stop25h 51mMultiple Airlines

Wed 8/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£508

Wed 1/1013:05LGW - SJU

1 stop17h 53mMultiple Airlines

Sun 5/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£492

Wed 1/1008:15LHR - SJU

1 stop13h 40mJetBlue

Tue 7/1013:25SJU - LHR

1 stop15h 05mJetBlue

Deal found 16/9£506

Thu 2/1014:00LGW - SJU

1 stop15h 54mMultiple Airlines

Sat 4/1021:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 16/9£493

Fri 3/1013:05LGW - SJU

1 stop17h 53mMultiple Airlines

Sun 5/1002:49SJU - LGW

2 stops22h 31mMultiple Airlines

Deal found 16/9£501

Tue 7/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Wed 8/1006:22SJU - LGW

2 stops22h 38mMultiple Airlines

Deal found 16/9£498

Tue 14/1008:15LHR - SJU

1 stop13h 27mIcelandair

Tue 21/1006:00SJU - LHR

2 stops19h 30mIcelandair

Deal found 16/9£503

Tue 14/1019:50LGW - SJU

2 stops35h 12mMultiple Airlines

Tue 21/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 16/9£506

One-way flights from United Kingdom to San Juan
Search for one-way flight options from United Kingdom to San Juan. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Wed 24/917:00EDI - SJU

3 stops43h 05mMultiple Airlines

Deal found 16/9£312

Thu 23/1008:20STN - SJU

3 stops47h 31mMultiple Airlines

Deal found 16/9£326

Thu 25/922:05LHR - SJU

1 stop23h 45mAvianca

Deal found 17/9£328

Mon 3/1120:20EDI - SJU

3 stops51h 01mMultiple Airlines

Deal found 16/9£332

Wed 22/1006:55STN - SJU

3 stops24h 07mMultiple Airlines

Deal found 15/9£335

Thu 23/1014:30LGW - SJU

3 stops41h 21mMultiple Airlines

Deal found 16/9£344

Thu 9/1006:25MAN - SJU

2 stops23h 11mMultiple Airlines

Deal found 15/9£350

Tue 23/919:15EDI - SJU

3 stops48h 07mMultiple Airlines

Deal found 16/9£351

Fri 26/923:50EDI - SJU

3 stops24h 18mMultiple Airlines

Deal found 16/9£362

Thu 23/1009:55LHR - SJU

3 stops45h 56mMultiple Airlines

Deal found 16/9£364

Wed 22/1007:00LGW - SJU

3 stops24h 02mMultiple Airlines

Deal found 15/9£370

Wed 11/218:20MAN - SJU

1 stop26h 20mIberia

Deal found 17/9£375

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 1/10

08:15-16:55

1 stop13h 40m

San Juan Luis Munoz Marin Intl

Thu 9/10

21:25-20:45

1 stop18h 20m

£506

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 2/10

14:00-00:54

1 stop15h 54m

San Juan Luis Munoz Marin Intl

Thu 9/10

06:22-06:20

1 stop18h 58m

£509

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 30/9

13:05-01:58

1 stop17h 53m

San Juan Luis Munoz Marin Intl

Thu 9/10

06:22-06:20

1 stop18h 58m

£510

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 3/10

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Thu 9/10

21:25-20:45

1 stop18h 20m

£510

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 3/10

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Tue 7/10

13:25-09:30

1 stop15h 05m

£510

EdinburghSan Juan

EDI - SJU

EDISJU

Edinburgh Turnhouse

Mon 6/10

12:10-12:27

1 stop29h 17m

San Juan Luis Munoz Marin Intl

Fri 17/10

20:22-10:10

1 stop32h 48m

£511

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 8/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Wed 15/10

02:49-06:20

2 stops22h 31m

£513

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 7/11

14:00-16:23

2 stops30h 23m

San Juan Luis Munoz Marin Intl

Mon 10/11

06:00-20:35

3 stops34h 35m

£524

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 6/11

07:40-19:55

1 stop16h 15m

San Juan Luis Munoz Marin Intl

Mon 10/11

21:40-14:05

1 stop12h 25m

£525

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 30/9

13:05-01:58

1 stop17h 53m

San Juan Luis Munoz Marin Intl

Sun 5/10

02:49-06:20

2 stops22h 31m

£534

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 results

...

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?

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

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

1,324 reviews

Check prices

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

1,324 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

JetBlue

7.2

Good

2,914 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.0

Good

545 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Iberia

7.0

Good

2,925 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,367 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from United Kingdom to San Juan?
Airlines like JetBlue, Avianca, and Icelandair fly from United Kingdom to San Juan in about 13h 40m. The time it takes to get you to your destination can typically vary by up to 7h 52m. 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 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 £328 on Avianca. Other airlines that offer cheap prices include Iberia from £375 and British Airways from £604 one-way.
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

Alternative routes for United Kingdom to San Juan

Heathrow to Luis Munoz Marin Intl flights

Gatwick to Luis Munoz Marin Intl flights

London City to Luis Munoz Marin Intl flights

Stansted to Luis Munoz Marin Intl flights

Manchester to Luis Munoz Marin Intl flights

Madrid to Luis Munoz Marin Intl flights

Birmingham to Luis Munoz Marin Intl flights

Edinburgh to Luis Munoz Marin Intl flights

Newcastle upon Tyne to Luis Munoz Marin Intl flights

Glasgow Intl to Luis Munoz Marin Intl flights

Norwich to Luis Munoz Marin Intl flights

Heathrow to Aguadilla flights

Dublin to Luis Munoz Marin Intl flights

Complete your trip

San Juan car hire

San Juan Luis Munoz Marin Intl Airport car hire

Ponce Mercedita Airport car hire

San Juan Isla Grande Airport car hire

Vieques Airport car hire

Condado car hire

Santurce car hire

San Juan Antiguo car hire

Hato Rey Sur car hire

Hato Rey Norte car hire

Gobernador Piñero car hire

Hato Rey Central car hire

Top 9 airlines flying from United Kingdom to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£338	Average£1,058	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
JetBlue	Cheapest£431	Average£585	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Icelandair	Cheapest£442	Average£733	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Finnair	Cheapest£445	Average£588	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£503	Average£826	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£530	Average£939	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£645	Average£966	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Delta	Cheapest£759	Average£1,071	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
KLM	Cheapest£852	Average£941	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

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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Cheap flights from the United Kingdom to San Juan from £312

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 18 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from United Kingdom to San Juan

Cheapest flights from United Kingdom to San JuanExplore 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

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

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.

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?

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 18 September 2025.

Reviews of airlines servicing San Juan

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.

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?

What are the cheapest airlines to fly from United Kingdom to San Juan 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?

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

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

What is the cheapest month to book a flight from United Kingdom to San Juan?

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Alternative routes for United Kingdom to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from United Kingdom to San Juan

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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 18 September 2025.