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Cheap flights from the United Kingdom to San Juan Luis Munoz Marin Intl Airport from £254

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from United Kingdom to Luis Munoz Marin Intl

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Luis Munoz Marin Intl
Explore the most affordable flight options available from United Kingdom to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.

Thu 13/1107:25LHR - SJU
1 stop24h 23mJetBlue
Sun 23/1101:59SJU - LHR
1 stop14h 46mJetBlue
Deal found 26/10£502
Thu 6/1109:20LHR - SJU
2 stops30h 06mIcelandair
Sat 15/1115:34SJU - LHR
1 stop25h 11mIcelandair
Deal found 27/10£502
Sat 8/1108:05LHR - SJU
2 stops29h 43mIcelandair
Sat 15/1106:10SJU - LHR
1 stop20h 45mIcelandair
Deal found 25/10£504
Thu 13/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Mon 24/1107:11SJU - LGW
1 stop18h 49mMultiple Airlines
Deal found 26/10£517
Tue 11/1107:25LHR - SJU
1 stop18h 29mJetBlue
Tue 18/1108:10SJU - LHR
1 stop18h 45mJetBlue
Deal found 27/10£517
Tue 11/1107:25LHR - SJU
1 stop18h 29mJetBlue
Sun 23/1101:59SJU - LHR
1 stop14h 46mJetBlue
Deal found 26/10£524
Mon 10/1108:05LHR - SJU
1 stop17h 49mJetBlue
Wed 19/1108:10SJU - LHR
1 stop18h 45mJetBlue
Deal found 27/10£525
Tue 11/1107:25LHR - SJU
1 stop18h 29mJetBlue
Tue 25/1105:01SJU - LHR
1 stop12h 39mJetBlue
Deal found 26/10£532
Fri 14/1114:00LGW - SJU
2 stops41h 33mMultiple Airlines
Sun 23/1107:11SJU - LGW
1 stop18h 49mMultiple Airlines
Deal found 26/10£538
Tue 25/1112:20LHR - SJU
1 stop19h 28mJetBlue
Mon 1/1204:20SJU - LHR
1 stop13h 20mJetBlue
Deal found 26/10£539
Thu 13/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Thu 11/1211:05SJU - LGW
1 stop18h 55mMultiple Airlines
Deal found 25/10£541
Mon 24/1108:05LHR - SJU
1 stop23h 43mJetBlue
Mon 1/1205:26SJU - LHR
1 stop24h 04mJetBlue
Deal found 24/10£544

Cheap flight deals from United Kingdom to Luis Munoz Marin Intl

Keep the following information in mind while searching for United Kingdom to Luis Munoz Marin Intl flight deals. Data was last updated 27 October 2025.

Round-trip from

£502

One-way from

£254

Popular in

July

Cheapest in

September

Average price

£658
JetBlue
  • JetBlue
  • 13/11-23/11
  • 2 total stops
  • 39h 09m total
  • United Kingdom to San Juan
Search Deals
31/1
  • 31/1
  • 2 total stops
  • 31h 43m 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 (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Luis Munoz Marin Intl 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 27 October 2025.
Use the filters below to find and compare flights from the United Kingdom to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

United Kingdom

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 8/1

14:00-09:52

1 stop23h 52m

San Juan Luis Munoz Marin Intl

Sun 18/1

21:37-10:00

1 stop32h 23m

£524

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/11

07:25-21:54

1 stop18h 29m

San Juan Luis Munoz Marin Intl

Sun 23/11

01:59-20:45

1 stop14h 46m

£524

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/11

07:25-21:54

1 stop18h 29m

San Juan Luis Munoz Marin Intl

Mon 17/11

09:30-09:30

1 stop20h 00m

£525

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 10/11

08:05-18:20

1 stop14h 15m

San Juan Luis Munoz Marin Intl

Mon 17/11

12:30-09:30

1 stop17h 00m

£525

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 12/11

07:25-18:20

1 stop14h 55m

San Juan Luis Munoz Marin Intl

Tue 25/11

05:01-21:40

1 stop12h 39m

£532

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 25/11

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Mon 1/12

04:20-21:40

1 stop13h 20m

£539

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 13/11

14:00-17:54

2 stops31h 54m

San Juan Luis Munoz Marin Intl

Wed 10/12

09:15-06:00

1 stop16h 45m

£541

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 13/11

14:00-02:54

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Thu 11/12

11:05-10:00

1 stop18h 55m

£541

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 14/11

14:00-11:19

1 stop25h 19m

San Juan Luis Munoz Marin Intl

Tue 25/11

07:11-06:00

1 stop18h 49m

£556

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 15/11

09:20-19:02

1 stop13h 42m

San Juan Luis Munoz Marin Intl

Mon 24/11

01:59-21:40

1 stop15h 41m

£562

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

What is the cheapest month to book a flight from United Kingdom to San Juan Luis Munoz Marin Intl Airport?

Currently, July is the cheapest month in which you can book a flight from United Kingdom to San Juan Luis Munoz Marin Intl Airport (average of £426). Flying from United Kingdom to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £561). 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 Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 28% on flights from United Kingdom to San Juan Luis Munoz Marin Intl Airport by exploring options for tickets in the afternoon.

What is the cheapest day to fly from United Kingdom to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly return from United Kingdom to Luis Munoz Marin Intl. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated 27 October 2025.
Read reviews from past customers who have flown with Finnair, JetBlue, andIcelandair from the United Kingdom to San Juan Luis Munoz Marin Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
JetBlue
7.2
Good
2,907 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Icelandair
7.1
Good
562 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
3,001 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,479 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Boarding

7.6

Comfort

7.4

Overall

7.6

Entertainment

6.9

Food

6.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl Airport?

    Departing from United Kingdom to San Juan Luis Munoz Marin Intl Airport will take you 18h 29m. United Kingdom and San Juan Luis Munoz Marin Intl Airport are separated by a distance of 4179 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from United Kingdom to San Juan Luis Munoz Marin Intl Airport?

    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 Luis Munoz Marin Intl Airport.

  • Can I find deals for flights from United Kingdom to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Luis Munoz Marin Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from United Kingdom to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from United Kingdom to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from United Kingdom to San Juan Luis Munoz Marin Intl Airport (average of £426). Flying from United Kingdom to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £561). 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

Travelling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Bayamón

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Top 8 airlines flying from United Kingdom to Luis Munoz Marin Intl

Discover the top 8 airlines that operate flights from United Kingdom to Luis Munoz Marin Intl. 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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£335Average£1,089FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£442Average£603FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£453Average£621FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£477Average£753FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£509Average£867FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£543Average£967FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£661Average£1,015FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£874Average£976FlexibilityNo 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 Luis Munoz Marin Intl?

Deals for United Kingdom to Luis Munoz Marin Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Luis Munoz Marin Intl?

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 from United Kingdom to Luis Munoz Marin Intl.

Can Cheapflights find flights from United Kingdom to Luis Munoz Marin Intl with no change fees?

Yes, we can. To see specific flights from United Kingdom to Luis Munoz Marin Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to Luis Munoz Marin Intl become cheaper?

Yes! Start tracking prices for United Kingdom to Luis Munoz Marin Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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