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

JetBlue is the most popular carrier operating from San Juan to London Heathrow

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

Prices for flights from San Juan to London Heathrow Airport refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan to London Heathrow Airport.

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

The necessary travel and health documents for your London Heathrow Airport 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.

£202 Cheap Flights from San Juan to London Heathrow Airport in 2025/26

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Find the cheapest flights from San Juan to London

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19:00 - 12:05

SJU

LHR

13h 05m1 stop

11:15 - 22:24

LHR

SJU

15h 09m1 stop

£392Iberia

Fri, 13 Feb - Sat, 21 Feb

19:00 - 12:05

SJU

LHR

13h 05m1 stop

11:15 - 22:24

LHR

SJU

15h 09m1 stop

£393Iberia

Fri, 13 Feb - Sat, 21 Feb

14:15 - 09:10

SJU

LHR

14h 55m1 stop

06:50 - 21:00

LHR

SJU

18h 10m2 stops

£427United Airlines

Wed, 11 Feb - Wed, 18 Feb

13:24 - 08:15

SJU

LHR

14h 51m1 stop

19:40 - 16:35

LHR

SJU

24h 55m1 stop

£428Iberia

Fri, 23 Jan - Sat, 31 Jan

14:15 - 11:15

SJU

LHR

17h 00m2 stops

06:50 - 22:22

LHR

SJU

19h 32m2 stops

£430United Airlines

Wed, 11 Feb - Wed, 18 Feb

05:15 - 21:40

SJU

LHR

12h 25m1 stop

12:20 - 03:51

LHR

SJU

19h 31m1 stop

£435JetBlue

Wed, 18 Feb - Thu, 26 Feb

14:10 - 08:25

SJU

LHR

14h 15m1 stop

08:30 - 22:22

LHR

SJU

17h 52m2 stops

£435United Airlines

Wed, 18 Feb - Thu, 26 Feb

18:34 - 11:40

SJU

LHR

13h 06m1 stop

12:40 - 23:57

LHR

SJU

15h 17m1 stop

£439Virgin Atlantic

Sat, 24 Jan - Fri, 6 Feb

14:10 - 09:10

SJU

LHR

15h 00m1 stop

09:10 - 22:22

LHR

SJU

17h 12m2 stops

£441United Airlines

Sat, 14 Feb - Sat, 21 Feb

07:40 - 06:55

SJU

LHR

18h 15m2 stops

06:55 - 21:24

LHR

SJU

19h 29m2 stops

£443United Airlines

Mon, 30 Mar - Wed, 8 Apr

KLM flights from San Juan to London Heathrow Airport

Our best KLM deals on San Juan to London Heathrow Airport flight tickets

KLM

1 May

SJU17:15San Juan Luis Munoz Marin Intl

15h 15m

1 stop

LHR13:30London Heathrow

12 May

LHR10:55London Heathrow

17h 48m

1 stop

SJU23:43San Juan Luis Munoz Marin Intl

£497

Find similar

KLM

1 Jan

SJU14:08San Juan Luis Munoz Marin Intl

12h 42m

1 stop

LHR06:50London Heathrow

12 Jan

LHR10:45London Heathrow

30h 20m

1 stop

SJU13:05San Juan Luis Munoz Marin Intl

£733

Find similar

United Airlines flights from San Juan to London Heathrow Airport

Our best United Airlines deals on San Juan to London Heathrow Airport flight tickets

United Airlines

11 Feb

SJU14:15San Juan Luis Munoz Marin Intl

14h 55m

1 stop

LHR09:10London Heathrow

18 Feb

LHR06:50London Heathrow

18h 10m

2 stops

SJU21:00San Juan Luis Munoz Marin Intl

£421

Find similar

United Airlines

11 Feb

SJU14:15San Juan Luis Munoz Marin Intl

14h 55m

1 stop

LHR09:10London Heathrow

18 Feb

LHR06:50London Heathrow

18h 10m

2 stops

SJU21:00San Juan Luis Munoz Marin Intl

£427

Find similar

United Airlines

11 Feb

SJU14:15San Juan Luis Munoz Marin Intl

17h 00m

2 stops

LHR11:15London Heathrow

18 Feb

LHR06:50London Heathrow

19h 32m

2 stops

SJU22:22San Juan Luis Munoz Marin Intl

£430

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from San Juan to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 13/2

19:00-12:05

1 stop13h 05m

London Heathrow

Sat 21/2

11:15-22:24

1 stop15h 09m

£392

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 13/2

19:00-12:05

1 stop13h 05m

London Heathrow

Sat 21/2

11:15-22:24

1 stop15h 09m

£393

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/2

14:15-09:10

1 stop14h 55m

London Heathrow

Wed 18/2

06:50-21:00

2 stops18h 10m

£427

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 23/1

13:24-08:15

1 stop14h 51m

London Heathrow

Sat 31/1

19:40-16:35

1 stop24h 55m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/2

14:15-11:15

2 stops17h 00m

London Heathrow

Wed 18/2

06:50-22:22

2 stops19h 32m

£430

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

05:15-21:40

1 stop12h 25m

London Heathrow

Thu 26/2

12:20-03:51

1 stop19h 31m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

14:10-08:25

1 stop14h 15m

London Heathrow

Thu 26/2

08:30-22:22

2 stops17h 52m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 24/1

18:34-11:40

1 stop13h 06m

London Heathrow

Fri 6/2

12:40-23:57

1 stop15h 17m

£439

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 14/2

14:10-09:10

1 stop15h 00m

London Heathrow

Sat 21/2

09:10-22:22

2 stops17h 12m

£441

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 30/3

07:40-06:55

2 stops18h 15m

London Heathrow

Wed 8/4

06:55-21:24

2 stops19h 29m

£443

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 Heathrow Airport

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 London Heathrow Airport?

In general, September is the cheapest month to fly from San Juan to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £466. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Juan averaging around £489.

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

On average, the least expensive day to fly to London Heathrow Airport from San Juan is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £466. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £1,051.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from San Juan to London Heathrow Airport at midday for as low as £535. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £1,049 on average. Flights to London Heathrow Airport from San Juan in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport 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 London Heathrow Airport from San Juan for as low as £473 on momondo.

Cheap San Juan to London Heathrow Airport flight deals and tips

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

Fastest flight time	12h 45m
Direct flights	None

The fastest flight from San Juan to London Heathrow Airport takes 12h 45m

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

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How far is San Juan to London Heathrow by plane?
London Heathrow is 4182.0 mi away from San Juan. Flights usually cover this in 12h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from San Juan to London Heathrow Airport?
Prices for flights from San Juan to London Heathrow Airport refresh daily.
How old do you have to be to fly from San Juan to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport 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.

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Slough

Northampton

Swindon

Stratford-upon-Avon

Southend-on-Sea

Canterbury

Ipswich

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Poole

Guildford

Swanage

Hayes

Chelmsford

Dover

Worthing

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Juan.

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

All flight searches from San Juan to London on momondo can be filtered to show those which offer flexible booking policies.

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.