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Cheap flights from the United Kingdom to San Juan from £277

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 7/4. 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

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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
12:50 - 17:05EDI-SJU
32h 15m2 stops
Multiple Airlines Logo
17:50 - 19:10SJU-EDI
21h 20m3 stops
£534Multiple Airlines
Find Deal
Tue, 3 Feb - Mon, 9 Feb
Multiple Airlines Logo
13:00 - 15:32LGW-SJU
30h 32m1 stop
Multiple Airlines Logo
11:07 - 06:00SJU-LGW
38h 53m2 stops
£556Multiple Airlines
Find Deal
Sun, 8 Mar - Sat, 21 Mar
Multiple Airlines Logo
13:40 - 17:05LHR-SJU
31h 25m3 stops
Multiple Airlines Logo
10:52 - 09:15SJU-LHR
18h 23m2 stops
£557Multiple Airlines
Find Deal
Thu, 19 Feb - Tue, 3 Mar
JetBlue Logo
07:25 - 18:53LHR-SJU
15h 28m1 stop
JetBlue Logo
14:20 - 09:30SJU-LHR
15h 10m1 stop
£559JetBlue
Find Deal
Tue, 16 Dec - Tue, 13 Jan
Multiple Airlines Logo
14:00 - 09:47LGW-SJU
23h 47m1 stop
Multiple Airlines Logo
17:50 - 15:45SJU-LGW
17h 55m2 stops
£559Multiple Airlines
Find Deal
Mon, 2 Feb - Tue, 10 Feb
JetBlue Logo
12:20 - 22:25LHR-SJU
14h 05m1 stop
JetBlue Logo
23:59 - 22:00SJU-LHR
18h 01m1 stop
£561JetBlue
Find Deal
Fri, 27 Feb - Fri, 6 Mar
Icelandair Logo
09:20 - 10:32LHR-SJU
29h 12m2 stops
Icelandair Logo
06:00 - 06:55SJU-LHR
44h 55m2 stops
£564Icelandair
Find Deal
Fri, 6 Feb - Mon, 23 Feb
Iberia Logo
19:15 - 16:35LCY-SJU
25h 20m1 stop
Iberia Logo
21:25 - 08:50SJU-LCY
31h 25m1 stop
£862Iberia
Find Deal
Mon, 26 Jan - Thu, 5 Feb
British Airways Logo
06:30 - 23:59NCL-SJU
21h 29m2 stops
British Airways Logo
14:28 - 14:55SJU-NCL
20h 27m2 stops
£1,004British Airways
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Thu, 5 Feb - Mon, 9 Feb
British Airways Logo
06:35 - 23:59GLA-SJU
21h 24m2 stops
British Airways Logo
07:00 - 10:45SJU-GLA
23h 45m2 stops
£1,031British Airways
Find Deal
Thu, 5 Feb - Sun, 8 Feb

Icelandair flights from United Kingdom to San Juan

Our best Icelandair deals on United Kingdom to San Juan flight tickets
Icelandair
6 Feb
LHR09:20London Heathrow
29h 12m
2 stops
SJU10:32San Juan Luis Munoz Marin Intl
23 Feb
SJU06:00San Juan Luis Munoz Marin Intl
44h 55m
2 stops
LHR06:55London Heathrow
£564
Find similar
Icelandair
21 Feb
LHR08:05London Heathrow
24h 05m
1 stop
SJU04:10San Juan Luis Munoz Marin Intl
7 Mar
SJU06:00San Juan Luis Munoz Marin Intl
23h 30m
2 stops
LHR09:30London Heathrow
£570
Find similar
Icelandair
20 Feb
LHR12:20London Heathrow
16h 39m
2 stops
SJU00:59San Juan Luis Munoz Marin Intl
5 Mar
SJU10:55San Juan Luis Munoz Marin Intl
16h 00m
2 stops
LHR06:55London Heathrow
£573
Find similar

British Airways flights from United Kingdom to San Juan

Our best British Airways deals on United Kingdom to San Juan flight tickets
British Airways
26 Jan
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
5 Feb
SJU21:25San Juan Luis Munoz Marin Intl
12h 40m
1 stop
LCY14:05London City
£916
Find similar
British Airways
26 Jan
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
10 Feb
SJU21:25San Juan Luis Munoz Marin Intl
12h 40m
1 stop
LCY14:05London City
£928
Find similar
British Airways
3 Feb
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
9 Feb
SJU21:25San Juan Luis Munoz Marin Intl
13h 10m
1 stop
LCY14:35London City
£982
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 4 December 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

EdinburghSan Juan

EDI - SJU

EDISJU

Edinburgh Turnhouse

Tue 3/2

12:50-17:05

2 stops32h 15m

San Juan Luis Munoz Marin Intl

Mon 9/2

17:50-19:10

3 stops21h 20m

£534

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 8/3

13:00-15:32

1 stop30h 32m

San Juan Luis Munoz Marin Intl

Sat 21/3

11:07-06:00

2 stops38h 53m

£556

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 19/2

13:40-17:05

3 stops31h 25m

San Juan Luis Munoz Marin Intl

Tue 3/3

10:52-09:15

2 stops18h 23m

£557

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 16/12

07:25-18:53

1 stop15h 28m

San Juan Luis Munoz Marin Intl

Tue 13/1

14:20-09:30

1 stop15h 10m

£559

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 2/2

14:00-09:47

1 stop23h 47m

San Juan Luis Munoz Marin Intl

Tue 10/2

17:50-15:45

2 stops17h 55m

£559

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 27/2

12:20-22:25

1 stop14h 05m

San Juan Luis Munoz Marin Intl

Fri 6/3

23:59-22:00

1 stop18h 01m

£561

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 6/2

09:20-10:32

2 stops29h 12m

San Juan Luis Munoz Marin Intl

Mon 23/2

06:00-06:55

2 stops44h 55m

£564

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

19:15-16:35

1 stop25h 20m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-08:50

1 stop31h 25m

£862

Newcastle upon TyneSan Juan

NCL - SJU

NCLSJU

Newcastle upon Tyne

Thu 5/2

06:30-23:59

2 stops21h 29m

San Juan Luis Munoz Marin Intl

Mon 9/2

14:28-14:55

2 stops20h 27m

£1,004

GlasgowSan Juan

GLA - SJU

GLASJU

Glasgow Intl

Thu 5/2

06:35-23:59

2 stops21h 24m

San Juan Luis Munoz Marin Intl

Sun 8/2

07:00-10:45

2 stops23h 45m

£1,031

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £536, 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 £567.

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 £535. 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 £652.

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 £592. 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 £846.

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 £649 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 £527 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

Fastest flight time

12h 50m

Direct flights

None
The fastest flight from United Kingdom to San Juan takes 12h 50m
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 £336Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £443Free CancellationRating
7.2
2,900 reviews
Search JetBlue flights
FinnairPriceFrom £454Free CancellationRating
7.6
1,334 reviews
Search Finnair flights
IcelandairPriceFrom £490Free CancellationRating
7.0
584 reviews
Search Icelandair flights
IberiaPriceFrom £506Free CancellationRating
7.0
3,038 reviews
Search Iberia flights
British AirwaysPriceFrom £544Free CancellationRating
6.7
7,550 reviews
Search British Airways flights
Aer LingusPriceFrom £662Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights
KLMPriceFrom £875Free CancellationRating
7.7
1,426 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

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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