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

JetBlue, United Airlines, and TAP AIR PORTUGAL 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.

£178 Cheap Flights from San Juan to the United Kingdom in 2025/26

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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.

13:57 - 09:00SJU-LHR

15h 03m1 stop

15:50 - 12:46LHR-SJU

24h 56m1 stop

£403KLM

Find Deal

Sun, 9 Nov - Thu, 20 Nov

13:55 - 07:50SJU-LHR

13h 55m1 stop

08:55 - 23:20LHR-SJU

18h 25m1 stop

£410KLM

Find Deal

Tue, 2 Dec - Thu, 18 Dec

07:00 - 08:45SJU-LHR

21h 45m2 stops

15:50 - 14:10LHR-SJU

26h 20m2 stops

£417Delta

Find Deal

Tue, 11 Nov - Thu, 20 Nov

02:05 - 20:35SJU-LHR

14h 30m1 stop

06:50 - 13:17LHR-SJU

34h 27m2 stops

£425United Airlines

Find Deal

Mon, 10 Nov - Thu, 20 Nov

02:05 - 20:35SJU-LHR

14h 30m1 stop

06:50 - 22:22LHR-SJU

19h 32m2 stops

£431United Airlines

Find Deal

Sun, 8 Feb - Tue, 17 Feb

18:38 - 11:40SJU-LHR

13h 02m1 stop

12:30 - 23:20LHR-SJU

14h 50m1 stop

£439Virgin Atlantic

Find Deal

Thu, 11 Dec - Thu, 18 Dec

07:15 - 06:20SJU-LHR

19h 05m1 stop

10:00 - 23:56LHR-SJU

17h 56m2 stops

£443Virgin Atlantic

Find Deal

Wed, 19 Nov - Mon, 24 Nov

07:00 - 07:05SJU-LHR

20h 05m2 stops

20:00 - 12:56LHR-SJU

20h 56m1 stop

£455Delta

Find Deal

Tue, 11 Nov - Mon, 17 Nov

18:42 - 12:05SJU-LHR

13h 23m1 stop

12:10 - 23:58LHR-SJU

15h 48m1 stop

£460Iberia

Find Deal

Fri, 14 Nov - Sun, 16 Nov

21:25 - 14:05SJU-LCY

12h 40m1 stop

07:50 - 19:55LCY-SJU

16h 05m1 stop

£552Iberia

Find Deal

Thu, 22 Jan - Thu, 29 Jan

KLM flights from San Juan to United Kingdom

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

KLM

9 Nov

SJU13:57San Juan Luis Munoz Marin Intl

15h 03m

1 stop

LHR09:00London Heathrow

20 Nov

LHR15:50London Heathrow

24h 56m

1 stop

SJU12:46San Juan Luis Munoz Marin Intl

£403

Find similar

KLM

2 Dec

SJU13:55San Juan Luis Munoz Marin Intl

13h 55m

1 stop

LHR07:50London Heathrow

18 Dec

LHR08:55London Heathrow

18h 25m

1 stop

SJU23:20San Juan Luis Munoz Marin Intl

£410

Find similar

KLM

7 Nov

SJU13:46San Juan Luis Munoz Marin Intl

14h 04m

1 stop

LHR07:50London Heathrow

10 Nov

LHR08:55London Heathrow

18h 18m

1 stop

SJU23:13San Juan Luis Munoz Marin Intl

£478

Find similar

Delta flights from San Juan to United Kingdom

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

Delta

11 Nov

SJU07:00San Juan Luis Munoz Marin Intl

21h 45m

2 stops

LHR08:45London Heathrow

20 Nov

LHR15:50London Heathrow

26h 20m

2 stops

SJU14:10San Juan Luis Munoz Marin Intl

£417

Find similar

Delta

11 Nov

SJU07:00San Juan Luis Munoz Marin Intl

20h 05m

2 stops

LHR07:05London Heathrow

17 Nov

LHR20:00London Heathrow

20h 56m

1 stop

SJU12:56San Juan Luis Munoz Marin Intl

£455

Find similar

Delta

16 Jan

SJU15:55San Juan Luis Munoz Marin Intl

15h 45m

1 stop

LHR11:40London Heathrow

26 Jan

LHR06:30London Heathrow

21h 14m

2 stops

SJU23:44San Juan Luis Munoz Marin Intl

£473

Find similar

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 JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 9/11

13:57-09:00

1 stop15h 03m

London Heathrow

Thu 20/11

15:50-12:46

1 stop24h 56m

£403

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/12

13:55-07:50

1 stop13h 55m

London Heathrow

Thu 18/12

08:55-23:20

1 stop18h 25m

£410

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 11/11

07:00-08:45

2 stops21h 45m

London Heathrow

Thu 20/11

15:50-14:10

2 stops26h 20m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 10/11

02:05-20:35

1 stop14h 30m

London Heathrow

Thu 20/11

06:50-13:17

2 stops34h 27m

£425

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 8/2

02:05-20:35

1 stop14h 30m

London Heathrow

Tue 17/2

06:50-22:22

2 stops19h 32m

£431

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 11/12

18:38-11:40

1 stop13h 02m

London Heathrow

Thu 18/12

12:30-23:20

1 stop14h 50m

£439

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 19/11

07:15-06:20

1 stop19h 05m

London Heathrow

Mon 24/11

10:00-23:56

2 stops17h 56m

£443

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 11/11

07:00-07:05

2 stops20h 05m

London Heathrow

Mon 17/11

20:00-12:56

1 stop20h 56m

£455

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 14/11

18:42-12:05

1 stop13h 23m

London Heathrow

Sun 16/11

12:10-23:58

1 stop15h 48m

£460

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-14:05

1 stop12h 40m

London City

Thu 29/1

07:50-19:55

1 stop16h 05m

£552

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 January. Flight prices, which tend to average around £500, 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 January, then departing from San Juan during the month February is also very affordable. Most momondo users find prices during this month for around £500.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from San Juan to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £495. 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 United Kingdom for around £794.

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

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £495. Try not to purchase tickets in the morning because they tend to be around £858. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £616 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 £479 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

Direct flights	None

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.