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

JetBlue, TAP AIR PORTUGAL, and Iberia are the most popular carriers operating from San Juan to London

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

Prices for flights from San Juan to London refresh daily.

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

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 London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London 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.

£229 Cheap Flights from San Juan to London in 2025/26

Q: What is the typical price of a round-trip flight between San Juan and London?

Prices are currently low for flights on this route. Typical prices usually range from £536 to £753. The lowest price recently found on this route was £422.

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Find the cheapest flights from San Juan to London

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

18:34 - 11:40

SJU

LHR

13h 06m1 stop

12:40 - 23:57

LHR

SJU

15h 17m1 stop

£422Virgin Atlantic

Sat, 24 Jan - Sat, 31 Jan

21:25 - 19:00

SJU

LGW

17h 35m1 stop

11:45 - 19:55

LGW

SJU

12h 10m1 stop

£426Iberia

Thu, 22 Jan - Thu, 29 Jan

14:47 - 09:15

SJU

LHR

14h 28m1 stop

06:15 - 19:55

LHR

SJU

17h 40m1 stop

£428American Airlines

Thu, 19 Feb - Sun, 1 Mar

02:05 - 20:35

SJU

LHR

14h 30m1 stop

06:50 - 21:00

LHR

SJU

18h 10m2 stops

£429United Airlines

Sat, 24 Jan - Sun, 8 Feb

02:05 - 21:20

SJU

LHR

15h 15m1 stop

06:30 - 22:22

LHR

SJU

19h 52m2 stops

£430United Airlines

Thu, 12 Feb - Sat, 21 Feb

13:07 - 10:30

SJU

LHR

17h 23m2 stops

06:20 - 20:58

LHR

SJU

18h 38m2 stops

£431Air France

Sat, 24 Jan - Sat, 31 Jan

21:25 - 16:05

SJU

LHR

14h 40m1 stop

08:25 - 19:55

LHR

SJU

15h 30m1 stop

£435American Airlines

Thu, 12 Mar - Sun, 22 Mar

17:50 - 10:50

SJU

LHR

13h 00m1 stop

08:30 - 22:22

LHR

SJU

17h 52m2 stops

£437United Airlines

Wed, 18 Feb - Thu, 26 Feb

21:25 - 14:30

SJU

LGW

13h 05m1 stop

07:20 - 19:55

LGW

SJU

16h 35m1 stop

£482Multiple Airlines

Tue, 10 Feb - Tue, 17 Feb

20:05 - 10:00

SJU

LGW

33h 55m1 stop

09:40 - 01:36

LGW

SJU

19h 56m2 stops

£548Multiple Airlines

Sun, 25 Jan - Sun, 8 Feb

American Airlines flights from San Juan to London

Our best American Airlines deals on San Juan to London flight tickets

American Airlines

19 Feb

SJU14:47San Juan Luis Munoz Marin Intl

14h 28m

1 stop

LHR09:15London Heathrow

1 Mar

LHR06:15London Heathrow

17h 40m

1 stop

SJU19:55San Juan Luis Munoz Marin Intl

£428

Find similar

American Airlines

12 Mar

SJU21:25San Juan Luis Munoz Marin Intl

14h 40m

1 stop

LHR16:05London Heathrow

22 Mar

LHR08:25London Heathrow

15h 30m

1 stop

SJU19:55San Juan Luis Munoz Marin Intl

£435

Find similar

American Airlines

9 Mar

SJU18:01San Juan Luis Munoz Marin Intl

13h 29m

1 stop

LHR11:30London Heathrow

20 Mar

LHR13:10London Heathrow

13h 30m

1 stop

SJU22:40San Juan Luis Munoz Marin Intl

£459

Find similar

Air Canada flights from San Juan to London

Our best Air Canada deals on San Juan to London flight tickets

Air Canada

7 Mar

SJU15:40San Juan Luis Munoz Marin Intl

34h 50m

1 stop

LHR06:30London Heathrow

21 Mar

LHR13:25London Heathrow

27h 30m

1 stop

SJU12:55San Juan Luis Munoz Marin Intl

£447

Find similar

Air Canada

12 Feb

SJU02:05San Juan Luis Munoz Marin Intl

25h 05m

2 stops

LHR07:10London Heathrow

21 Feb

LHR15:00London Heathrow

27h 40m

2 stops

SJU14:40San Juan Luis Munoz Marin Intl

£449

Find similar

Air Canada

29 Jan

SJU02:05San Juan Luis Munoz Marin Intl

25h 05m

2 stops

LHR07:10London Heathrow

2 Feb

LHR13:25London Heathrow

27h 30m

2 stops

SJU12:55San Juan Luis Munoz Marin Intl

£455

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 24/1

18:34-11:40

1 stop13h 06m

London Heathrow

Sat 31/1

12:40-23:57

1 stop15h 17m

£422

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-19:00

1 stop17h 35m

London Gatwick

Thu 29/1

11:45-19:55

1 stop12h 10m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 19/2

14:47-09:15

1 stop14h 28m

London Heathrow

Sun 1/3

06:15-19:55

1 stop17h 40m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 24/1

02:05-20:35

1 stop14h 30m

London Heathrow

Sun 8/2

06:50-21:00

2 stops18h 10m

£429

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/2

02:05-21:20

1 stop15h 15m

London Heathrow

Sat 21/2

06:30-22:22

2 stops19h 52m

£430

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 24/1

13:07-10:30

2 stops17h 23m

London Heathrow

Sat 31/1

06:20-20:58

2 stops18h 38m

£431

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/3

21:25-16:05

1 stop14h 40m

London Heathrow

Sun 22/3

08:25-19:55

1 stop15h 30m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

17:50-10:50

1 stop13h 00m

London Heathrow

Thu 26/2

08:30-22:22

2 stops17h 52m

£437

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 10/2

21:25-14:30

1 stop13h 05m

London Gatwick

Tue 17/2

07:20-19:55

1 stop16h 35m

£482

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 25/1

20:05-10:00

1 stop33h 55m

London Gatwick

Sun 8/2

09:40-01:36

2 stops19h 56m

£548

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 London

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 typical price of a round-trip flight between San Juan and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Juan is in February. Flight prices, which tend to average around £406, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from San Juan averaging around £471.

What is the cheapest day to depart on your flight to London?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £493. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Juan to London for around £790.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £493. Flights in the morning are often more expensive, with an average ticket price of £855.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £621 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Juan for as low as £477 on momondo.

Cheap San Juan to London flight deals and tips

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

Fastest flight time	11h 45m
Direct flights	None

The fastest flight from San Juan to London takes 11h 45m

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

Search flight deals

How far is San Juan to London by plane?
San Juan and London are 4196.4 mi apart from one another. Flights usually cover this in 11h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from San Juan to London?
Prices for flights from San Juan to London refresh daily.
How old do you have to be to fly from San Juan to London?
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 London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London 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.

Eastbourne

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Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Colchester

Bedford

Ramsgate

Hounslow

Stansted

Why use momondo?

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

It is quick and easy to find San Juan to London 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 London that suits you.

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

momondo does allow users to show only those flights to London from San Juan which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Juan to London.

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

Of course. momondo tracks the price of San Juan to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.