What is the cheapest airline that flies from San Juan to United Kingdom?

Iberia, American Airlines, and United Airlines are the most popular carriers operating from San Juan to United Kingdom

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

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

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

As of June 2026, there is 1 operator available to choose from for flights from San Juan to United Kingdom.

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

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 San Juan to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£202 Cheap Flights from San Juan to the United Kingdom in 2026

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Find the cheapest flights from San Juan to the United Kingdom

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

21:35 - 14:55

SJU

LHR

13h 20m

1 stop

06:15 - 16:40

LHR

SJU

14h 25m

1 stop

£540Iberia

Wed, 4 Nov - Wed, 11 Nov

18:43 - 11:40

SJU

LHR

12h 57m

1 stop

19:25 - 23:13

LHR

SJU

31h 48m

2 stops

£548Virgin Atlantic

Wed, 4 Nov - Wed, 11 Nov

15:56 - 10:00

SJU

LHR

37h 04m

2 stops

06:50 - 23:50

LHR

SJU

22h 00m

2 stops

£593United Airlines

Wed, 23 Sep - Sat, 26 Sep

06:00 - 10:00

SJU

LGW

23h 00m

1 stop

14:00 - 23:29

LGW

SJU

14h 29m

1 stop

£599Multiple Airlines

Tue, 18 Aug - Sat, 5 Sep

14:20 - 11:35

SJU

LHR

16h 15m

1 stop

07:30 - 23:50

LHR

SJU

21h 20m

2 stops

£600United Airlines

Thu, 17 Sep - Sat, 19 Sep

06:00 - 10:00

SJU

LGW

23h 00m

1 stop

14:00 - 23:29

LGW

SJU

14h 29m

1 stop

£600Multiple Airlines

Tue, 18 Aug - Fri, 4 Sep

10:16 - 06:55

SJU

LGW

15h 39m

2 stops

14:30 - 13:54

LGW

SJU

28h 24m

2 stops

£609American Airlines

Sun, 20 Sep - Wed, 23 Sep

13:32 - 09:20

SJU

EDI

14h 48m

1 stop

14:05 - 23:44

EDI

SJU

14h 39m

1 stop

£609Delta

Mon, 21 Sep - Wed, 30 Sep

12:58 - 09:20

SJU

EDI

15h 22m

2 stops

14:05 - 23:44

EDI

SJU

14h 39m

1 stop

£612Delta

Mon, 21 Sep - Wed, 30 Sep

17:15 - 17:00

SJU

GLA

18h 45m

2 stops

07:35 - 23:15

GLA

SJU

20h 40m

2 stops

£723American Airlines

Sat, 22 Aug - Sun, 30 Aug

Iberia flights from San Juan to United Kingdom

Our best Iberia deals on San Juan to United Kingdom flight tickets

Iberia

4 Nov

SJU21:35San Juan Luis Munoz Marin Intl

13h 20m

1 stop

LHR14:55London Heathrow

11 Nov

LHR06:15London Heathrow

14h 25m

1 stop

SJU16:40San Juan Luis Munoz Marin Intl

£540

Iberia

26 Nov

SJU14:41San Juan Luis Munoz Marin Intl

13h 34m

1 stop

LHR08:15London Heathrow

3 Dec

LHR06:15London Heathrow

17h 45m

1 stop

SJU20:00San Juan Luis Munoz Marin Intl

£562

Iberia

26 Nov

SJU14:41San Juan Luis Munoz Marin Intl

13h 34m

1 stop

LHR08:15London Heathrow

3 Dec

LHR07:30London Heathrow

13h 10m

1 stop

SJU16:40San Juan Luis Munoz Marin Intl

£563

Virgin Atlantic flights from San Juan to United Kingdom

Our best Virgin Atlantic deals on San Juan to United Kingdom flight tickets

Virgin Atlantic

4 Nov

SJU18:43San Juan Luis Munoz Marin Intl

12h 57m

1 stop

LHR11:40London Heathrow

11 Nov

LHR19:25London Heathrow

31h 48m

2 stops

SJU23:13San Juan Luis Munoz Marin Intl

£548

Virgin Atlantic

16 Nov

SJU18:35San Juan Luis Munoz Marin Intl

13h 05m

1 stop

LHR11:40London Heathrow

20 Nov

LHR11:55London Heathrow

16h 00m

1 stop

SJU23:55San Juan Luis Munoz Marin Intl

£554

Virgin Atlantic

16 Nov

SJU18:35San Juan Luis Munoz Marin Intl

13h 05m

1 stop

LHR11:40London Heathrow

20 Nov

LHR11:55London Heathrow

16h 00m

1 stop

SJU23:55San Juan Luis Munoz Marin Intl

£573

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/11

21:35-14:55

1 stop13h 20m

London Heathrow

Wed 11/11

06:15-16:40

1 stop14h 25m

£540

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/11

18:43-11:40

1 stop12h 57m

London Heathrow

Wed 11/11

19:25-23:13

2 stops31h 48m

£548

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 23/9

15:56-10:00

2 stops37h 04m

London Heathrow

Sat 26/9

06:50-23:50

2 stops22h 00m

£593

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 18/8

06:00-10:00

1 stop23h 00m

London Gatwick

Sat 5/9

14:00-23:29

1 stop14h 29m

£599

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 17/9

14:20-11:35

1 stop16h 15m

London Heathrow

Sat 19/9

07:30-23:50

2 stops21h 20m

£600

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 18/8

06:00-10:00

1 stop23h 00m

London Gatwick

Fri 4/9

14:00-23:29

1 stop14h 29m

£600

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 20/9

10:16-06:55

2 stops15h 39m

London Gatwick

Wed 23/9

14:30-13:54

2 stops28h 24m

£609

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Mon 21/9

13:32-09:20

1 stop14h 48m

Edinburgh Turnhouse

Wed 30/9

14:05-23:44

1 stop14h 39m

£609

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Mon 21/9

12:58-09:20

2 stops15h 22m

Edinburgh Turnhouse

Wed 30/9

14:05-23:44

1 stop14h 39m

£612

San JuanGlasgow

SJU - GLA

SJUGLA

San Juan Luis Munoz Marin Intl

Sat 22/8

17:15-17:00

2 stops18h 45m

Glasgow Intl

Sun 30/8

07:35-23:15

2 stops20h 40m

£723

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from San Juan is in October. Flight prices, which tend to average around £75, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from San Juan during the month September is also very affordable. Most momondo users find prices during this month for around £75.

How far in advance should I book a flight from San Juan to the United Kingdom?

You are more likely to see cheaper flights to United Kingdom from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £626 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from San Juan for as low as £495 on momondo.

Cheap San Juan to United Kingdom flight deals and tips

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

Fastest flight time	12h 30m
Direct flights	None

The fastest flight from San Juan to United Kingdom takes 12h 30m

There are no direct flights from San Juan to United Kingdom. There are no popular flight routes from San Juan to United Kingdom.

Search flight deals

Frequently asked questions about flying from San Juan to the United Kingdom

When did momondo last update prices for flights from San Juan to United Kingdom?
Prices for flights from San Juan to United Kingdom are refreshed on a daily basis.
How many operators does momondo search for flights from San Juan to United Kingdom?
As of June 2026, there is 1 operator available to choose from for flights from San Juan to United Kingdom.
How old do you have to be to fly from San Juan to United Kingdom?
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 San Juan to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from San Juan to United Kingdom

Compare and see reviews for airlines that fly from San Juan to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom £572	Free Cancellation	Rating 7.1 2,982 reviews		Search JetBlue flights

Why use momondo?

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

It is quick and easy to find San Juan to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

Flights from San Juan to United Kingdom with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between San Juan and United Kingdom by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from San Juan to United Kingdom now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United Kingdom and let you know when they change.