Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from the United Kingdom to San Juan from £261

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to San Juan departing on 5/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from the United Kingdom to San Juan

Recent return flight deals from the United Kingdom to San Juan

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:00 - 16:13LGW-SJU
31h 13m1 stop
Multiple Airlines Logo
07:10 - 06:00SJU-LGW
18h 50m1 stop
£485Multiple Airlines
Find Deal
Wed, 18 Feb - Fri, 27 Feb
Icelandair Logo
09:20 - 12:33LHR-SJU
31h 13m1 stop
Icelandair Logo
16:10 - 09:30SJU-LHR
13h 20m1 stop
£485Icelandair
Find Deal
Mon, 2 Feb - Thu, 12 Feb
JetBlue Logo
09:20 - 23:54LHR-SJU
18h 34m1 stop
JetBlue Logo
05:09 - 21:40SJU-LHR
12h 31m1 stop
£491JetBlue
Find Deal
Wed, 3 Dec - Wed, 10 Dec
JetBlue Logo
07:25 - 03:48LHR-SJU
24h 23m1 stop
JetBlue Logo
06:10 - 06:55SJU-LHR
20h 45m1 stop
£499JetBlue
Find Deal
Thu, 6 Nov - Sat, 15 Nov
Iberia Logo
07:50 - 16:35LCY-SJU
12h 45m1 stop
Iberia Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£908Iberia
Find Deal
Wed, 18 Feb - Wed, 25 Feb
Iberia Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
Iberia Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£940Iberia
Find Deal
Mon, 26 Jan - Thu, 5 Feb
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£999British Airways
Find Deal
Mon, 26 Jan - Thu, 5 Feb
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
13:45 - 08:50SJU-LCY
39h 05m2 stops
£1,095British Airways
Find Deal
Tue, 10 Mar - Thu, 12 Mar
Virgin Atlantic Logo
09:35 - 23:56NWI-SJU
42h 21m2 stops
Virgin Atlantic Logo
18:35 - 09:05SJU-NWI
34h 30m2 stops
£1,221Virgin Atlantic
Find Deal
Thu, 13 Nov - Mon, 17 Nov
Virgin Atlantic Logo
10:00 - 23:59LCY-SJU
17h 59m2 stops
Virgin Atlantic Logo
15:55 - 16:35SJU-LCY
20h 40m2 stops
£1,475Virgin Atlantic
Find Deal
Sat, 20 Dec - Thu, 8 Jan

Icelandair flights from United Kingdom to San Juan

Our best Icelandair deals on United Kingdom to San Juan flight tickets
Icelandair
2 Feb
LHR09:20London Heathrow
31h 13m
1 stop
SJU12:33San Juan Luis Munoz Marin Intl
12 Feb
SJU16:10San Juan Luis Munoz Marin Intl
13h 20m
1 stop
LHR09:30London Heathrow
£485
Find similar
Icelandair
7 Nov
LHR08:05London Heathrow
23h 43m
1 stop
SJU03:48San Juan Luis Munoz Marin Intl
15 Nov
SJU06:27San Juan Luis Munoz Marin Intl
20h 28m
2 stops
LHR06:55London Heathrow
£487
Find similar
Icelandair
26 Jan
LHR09:20London Heathrow
21h 13m
2 stops
SJU02:33San Juan Luis Munoz Marin Intl
5 Feb
SJU11:15San Juan Luis Munoz Marin Intl
18h 15m
1 stop
LHR09:30London Heathrow
£488
Find similar

JetBlue flights from United Kingdom to San Juan

Our best JetBlue deals on United Kingdom to San Juan flight tickets
JetBlue
3 Dec
LHR09:20London Heathrow
18h 34m
1 stop
SJU23:54San Juan Luis Munoz Marin Intl
10 Dec
SJU05:09San Juan Luis Munoz Marin Intl
12h 31m
1 stop
LHR21:40London Heathrow
£491
Find similar
JetBlue
6 Nov
LHR07:25London Heathrow
24h 23m
1 stop
SJU03:48San Juan Luis Munoz Marin Intl
15 Nov
SJU06:10San Juan Luis Munoz Marin Intl
20h 45m
1 stop
LHR06:55London Heathrow
£499
Find similar
JetBlue
17 Feb
LHR09:20London Heathrow
17h 40m
1 stop
SJU23:00San Juan Luis Munoz Marin Intl
24 Feb
SJU01:59San Juan Luis Munoz Marin Intl
14h 46m
1 stop
LHR20:45London Heathrow
£509
Find similar

momondo 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, momondo users made 279,928 searches. Data last updated 20 October 2025.
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

LGW - SJU

LGWSJU

London Gatwick

Wed 18/2

13:00-16:13

1 stop31h 13m

San Juan Luis Munoz Marin Intl

Fri 27/2

07:10-06:00

1 stop18h 50m

£485

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 2/2

09:20-12:33

1 stop31h 13m

San Juan Luis Munoz Marin Intl

Thu 12/2

16:10-09:30

1 stop13h 20m

£485

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/12

09:20-23:54

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Wed 10/12

05:09-21:40

1 stop12h 31m

£491

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 6/11

07:25-03:48

1 stop24h 23m

San Juan Luis Munoz Marin Intl

Sat 15/11

06:10-06:55

1 stop20h 45m

£499

LondonSan Juan

LCY - SJU

LCYSJU

London City

Wed 18/2

07:50-16:35

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Wed 25/2

21:25-14:05

1 stop12h 40m

£908

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-14:05

1 stop12h 40m

£940

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-14:05

1 stop12h 40m

£999

LondonSan Juan

LCY - SJU

LCYSJU

London City

Tue 10/3

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 12/3

13:45-08:50

2 stops39h 05m

£1,095

NorwichSan Juan

NWI - SJU

NWISJU

Norwich Arpt

Thu 13/11

09:35-23:56

2 stops42h 21m

San Juan Luis Munoz Marin Intl

Mon 17/11

18:35-09:05

2 stops34h 30m

£1,221

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 20/12

10:00-23:59

2 stops17h 59m

San Juan Luis Munoz Marin Intl

Thu 8/1

15:55-16:35

2 stops20h 40m

£1,475

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Juan from

How to get the cheapest flight ticket from United Kingdom to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Juan?

The cheapest month to fly to San Juan from United Kingdom is in September. Flight prices, which tend to average around £531, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to San Juan from United Kingdom during January instead. Flights to San Juan in January, while not as cheap as those in September, still average around £545.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart on your flight to San Juan is on a Monday when prices can be found for as low as £530. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around £645.

What is the cheapest time of day to depart on your flight to San Juan?

In the morning is the cheapest time of day to fly from United Kingdom to San Juan when you can find flight prices for as low as £585. Flying to San Juan in the morning is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive, with an average ticket price of £837.

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around £639 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from United Kingdom for as low as £522 on momondo.

Cheap United Kingdom to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to San Juan

Direct flights

None
There are no direct flights from United Kingdom to San Juan. There are no popular flight routes from United Kingdom to San Juan.
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to San Juan?

    Prices for flights from United Kingdom to San Juan are refreshed on a daily basis.

  • How many operators does momondo search for flights from United Kingdom to San Juan?

  • How old do you have to be to fly from United Kingdom to San Juan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The necessary travel and health documents for your San Juan trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United Kingdom to San Juan

Compare and see reviews for airlines that fly from United Kingdom to San Juan with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £332Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £438Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
FinnairPriceFrom £449Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
IcelandairPriceFrom £462Free CancellationRating
7.0
561 reviews
Search Icelandair flights
IberiaPriceFrom £508Free CancellationRating
7.0
2,996 reviews
Search Iberia flights
British AirwaysPriceFrom £538Free CancellationRating
6.7
7,461 reviews
Search British Airways flights
Aer LingusPriceFrom £656Free CancellationRating
7.2
1,348 reviews
Search Aer Lingus flights
KLMPriceFrom £866Free CancellationRating
7.7
1,404 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom to San Juan?

Finding the right flight to San Juan from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

Can I find flights from United Kingdom to San Juan with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Juan from United Kingdom with this policy.

How can momondo help me find flights from United Kingdom to San Juan?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from United Kingdom.

I’m not ready to book a flight from United Kingdom to San Juan right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from United Kingdom and alert you when they change.

An easier way to manage your San Juan trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 19/11
Wed 26/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Luis Munoz Marin Intl Airport