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

Iberia, United Airlines, and Delta 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 May 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.

£199 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.

14:05 - 09:00

SJU

LHR

13h 55m

1 stop

12:15 - 23:59

LHR

SJU

16h 44m

1 stop

£523Iberia

Sun, 20 Sep - Sat, 26 Sep

14:00 - 09:00

SJU

LHR

14h 00m

1 stop

06:15 - 15:25

LHR

SJU

14h 10m

1 stop

£574Iberia

Sun, 18 Oct - Sat, 24 Oct

13:30 - 07:05

SJU

EDI

12h 35m

1 stop

14:05 - 23:56

EDI

SJU

14h 51m

1 stop

£599KLM

Tue, 29 Sep - Tue, 13 Oct

14:25 - 14:45

SJU

EDI

19h 20m

2 stops

10:30 - 23:59

EDI

SJU

18h 29m

2 stops

£600American Airlines

Mon, 21 Sep - Wed, 30 Sep

15:47 - 12:50

SJU

LHR

16h 03m

1 stop

11:30 - 18:50

LHR

SJU

12h 20m

1 stop

£604American Airlines

Wed, 12 Aug - Wed, 26 Aug

13:30 - 07:05

SJU

EDI

12h 35m

1 stop

14:05 - 23:44

EDI

SJU

14h 39m

1 stop

£605Delta

Mon, 21 Sep - Wed, 30 Sep

13:30 - 07:05

SJU

EDI

12h 35m

1 stop

11:20 - 23:44

EDI

SJU

17h 24m

2 stops

£608KLM

Mon, 21 Sep - Wed, 30 Sep

13:32 - 10:20

SJU

LHR

15h 48m

1 stop

06:30 - 23:56

LHR

SJU

22h 26m

2 stops

£609Delta

Wed, 30 Sep - Tue, 6 Oct

08:30 - 09:35

SJU

LGW

20h 05m

1 stop

12:20 - 01:55

LGW

SJU

18h 35m

1 stop

£681JetBlue

Fri, 14 Aug - Fri, 28 Aug

16:55 - 09:35

SJU

LGW

11h 40m

1 stop

12:20 - 01:55

LGW

SJU

18h 35m

1 stop

£692JetBlue

Fri, 14 Aug - Fri, 28 Aug

Air Canada flights from San Juan to United Kingdom

Our best Air Canada deals on San Juan to United Kingdom flight tickets

Air Canada

8 Oct

SJU01:00San Juan Luis Munoz Marin Intl

39h 00m

2 stops

LHR21:00London Heathrow

20 Oct

LHR09:30London Heathrow

19h 20m

2 stops

SJU23:50San Juan Luis Munoz Marin Intl

£666

Air Canada

21 Oct

SJU18:45San Juan Luis Munoz Marin Intl

30h 45m

2 stops

MAN06:30Manchester

31 Oct

MAN11:50Manchester

30h 35m

1 stop

SJU14:25San Juan Luis Munoz Marin Intl

£739

Iberia flights from San Juan to United Kingdom

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

Iberia

20 Sept

SJU14:05San Juan Luis Munoz Marin Intl

13h 55m

1 stop

LHR09:00London Heathrow

26 Sept

LHR12:15London Heathrow

16h 44m

1 stop

SJU23:59San Juan Luis Munoz Marin Intl

£523

Iberia

18 Oct

SJU14:00San Juan Luis Munoz Marin Intl

14h 00m

1 stop

LHR09:00London Heathrow

24 Oct

LHR06:15London Heathrow

14h 10m

1 stop

SJU15:25San Juan Luis Munoz Marin Intl

£574

Iberia

12 Aug

SJU17:15San Juan Luis Munoz Marin Intl

12h 20m

1 stop

LHR10:35London Heathrow

26 Aug

LHR10:50London Heathrow

13h 00m

1 stop

SJU18:50San Juan Luis Munoz Marin Intl

£600

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 20/9

14:05-09:00

1 stop13h 55m

London Heathrow

Sat 26/9

12:15-23:59

1 stop16h 44m

£523

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 18/10

14:00-09:00

1 stop14h 00m

London Heathrow

Sat 24/10

06:15-15:25

1 stop14h 10m

£574

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Tue 29/9

13:30-07:05

1 stop12h 35m

Edinburgh Turnhouse

Tue 13/10

14:05-23:56

1 stop14h 51m

£599

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Mon 21/9

14:25-14:45

2 stops19h 20m

Edinburgh Turnhouse

Wed 30/9

10:30-23:59

2 stops18h 29m

£600

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

15:47-12:50

1 stop16h 03m

London Heathrow

Wed 26/8

11:30-18:50

1 stop12h 20m

£604

Fastest return journey

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Mon 21/9

13:30-07:05

1 stop12h 35m

Edinburgh Turnhouse

Wed 30/9

14:05-23:44

1 stop14h 39m

£605

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Mon 21/9

13:30-07:05

1 stop12h 35m

Edinburgh Turnhouse

Wed 30/9

11:20-23:44

2 stops17h 24m

£608

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 30/9

13:32-10:20

1 stop15h 48m

London Heathrow

Tue 6/10

06:30-23:56

2 stops22h 26m

£609

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Fri 14/8

08:30-09:35

1 stop20h 05m

London Gatwick

Fri 28/8

12:20-01:55

1 stop18h 35m

£681

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Fri 14/8

16:55-09:35

1 stop11h 40m

London Gatwick

Fri 28/8

12:20-01:55

1 stop18h 35m

£692

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 £613 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 £490 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	11h 20m
Direct flights	None

The fastest flight from San Juan to United Kingdom takes 11h 20m

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 May 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 £567	Free Cancellation	Rating 7.1 2,973 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.