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

British Airways, United Airlines, and JetBlue 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 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.

£137 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.

16:50 - 18:05

SJU

EDI

21h 15m

2 stops

06:50 - 22:58

EDI

SJU

20h 08m

2 stops

£383British Airways

Tue, 3 Mar - Tue, 10 Mar

21:25 - 14:20

SJU

LHR

12h 55m

1 stop

10:05 - 19:55

LHR

SJU

13h 50m

1 stop

£398American Airlines

Sun, 8 Feb - Tue, 24 Feb

12:46 - 12:05

SJU

LHR

19h 19m

1 stop

17:25 - 19:55

LHR

SJU

30h 30m

1 stop

£398British Airways

Tue, 17 Feb - Mon, 2 Mar

06:40 - 07:30

SJU

LHR

20h 50m

1 stop

16:20 - 21:22

LHR

SJU

33h 02m

1 stop

£406United Airlines

Mon, 9 Mar - Fri, 20 Mar

08:05 - 06:40

SJU

LHR

18h 35m

1 stop

06:50 - 22:22

LHR

SJU

19h 32m

2 stops

£409United Airlines

Wed, 18 Feb - Sat, 28 Feb

01:00 - 06:30

SJU

LHR

24h 30m

2 stops

09:30 - 23:50

LHR

SJU

19h 20m

2 stops

£422Air Canada

Tue, 21 Apr - Wed, 29 Apr

06:00 - 10:00

SJU

LGW

24h 00m

1 stop

14:00 - 09:17

LGW

SJU

23h 17m

1 stop

£427Multiple Airlines

Mon, 2 Mar - Mon, 9 Mar

06:00 - 10:00

SJU

LGW

24h 00m

1 stop

14:00 - 10:17

LGW

SJU

24h 17m

1 stop

£474Multiple Airlines

Thu, 26 Feb - Fri, 27 Feb

17:45 - 16:40

SJU

LCY

41h 55m

2 stops

10:00 - 12:28

LCY

SJU

55h 28m

2 stops

£507Delta

Wed, 22 Apr - Thu, 30 Apr

17:45 - 07:55

SJU

LCY

33h 10m

2 stops

13:45 - 11:58

LCY

SJU

27h 13m

2 stops

£544Delta

Wed, 22 Apr - Sun, 3 May

Air Canada flights from San Juan to United Kingdom

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

Air Canada

21 Apr

SJU01:00San Juan Luis Munoz Marin Intl

24h 30m

2 stops

LHR06:30London Heathrow

29 Apr

LHR09:30London Heathrow

19h 20m

2 stops

SJU23:50San Juan Luis Munoz Marin Intl

£422

Air Canada

21 Apr

SJU01:00San Juan Luis Munoz Marin Intl

24h 30m

2 stops

LHR06:30London Heathrow

28 Apr

LHR09:30London Heathrow

19h 20m

2 stops

SJU23:50San Juan Luis Munoz Marin Intl

£430

Air Canada

18 Apr

SJU14:45San Juan Luis Munoz Marin Intl

34h 50m

1 stop

LHR06:35London Heathrow

29 Apr

LHR09:30London Heathrow

19h 20m

2 stops

SJU23:50San Juan Luis Munoz Marin Intl

£467

United Airlines flights from San Juan to United Kingdom

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

United Airlines

9 Mar

SJU06:40San Juan Luis Munoz Marin Intl

20h 50m

1 stop

LHR07:30London Heathrow

20 Mar

LHR16:20London Heathrow

33h 02m

1 stop

SJU21:22San Juan Luis Munoz Marin Intl

£406

United Airlines

18 Feb

SJU08:05San Juan Luis Munoz Marin Intl

18h 35m

1 stop

LHR06:40London Heathrow

28 Feb

LHR06:50London Heathrow

19h 32m

2 stops

SJU22:22San Juan Luis Munoz Marin Intl

£409

United Airlines

7 Feb

SJU02:05San Juan Luis Munoz Marin Intl

15h 15m

1 stop

LHR21:20London Heathrow

24 Feb

LHR08:30London Heathrow

17h 52m

2 stops

SJU22:22San Juan Luis Munoz Marin Intl

£412

momondo Fare Finder

Use the filters below to find and compare flights from San Juan to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanEdinburgh

SJU - EDI

SJUEDI

San Juan Luis Munoz Marin Intl

Tue 3/3

16:50-18:05

2 stops21h 15m

Edinburgh Turnhouse

Tue 10/3

06:50-22:58

2 stops20h 08m

£383

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 8/2

21:25-14:20

1 stop12h 55m

London Heathrow

Tue 24/2

10:05-19:55

1 stop13h 50m

£398

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/2

12:46-12:05

1 stop19h 19m

London Heathrow

Mon 2/3

17:25-19:55

1 stop30h 30m

£398

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 9/3

06:40-07:30

1 stop20h 50m

London Heathrow

Fri 20/3

16:20-21:22

1 stop33h 02m

£406

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

08:05-06:40

1 stop18h 35m

London Heathrow

Sat 28/2

06:50-22:22

2 stops19h 32m

£409

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 21/4

01:00-06:30

2 stops24h 30m

London Heathrow

Wed 29/4

09:30-23:50

2 stops19h 20m

£422

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Mon 2/3

06:00-10:00

1 stop24h 00m

London Gatwick

Mon 9/3

14:00-09:17

1 stop23h 17m

£427

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 26/2

06:00-10:00

1 stop24h 00m

London Gatwick

Fri 27/2

14:00-10:17

1 stop24h 17m

£474

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Wed 22/4

17:45-16:40

2 stops41h 55m

London City

Thu 30/4

10:00-12:28

2 stops55h 28m

£507

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Wed 22/4

17:45-07:55

2 stops33h 10m

London City

Sun 3/5

13:45-11:58

2 stops27h 13m

£544

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 February. Flight prices, which tend to average around £435, 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 February, then departing from San Juan during the month January is also very affordable. Most momondo users find prices during this month for around £466.

How far in advance should I book a flight to 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 £617 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 £476 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 25m
Direct flights	None

The fastest flight from San Juan to United Kingdom takes 12h 25m

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

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 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.

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.