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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £206

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Juan Luis Munoz Marin Intl Airport to London departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from San Juan Luis Munoz Marin Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Iberia Logo
19:00 - 12:05
SJU
-
LHR
13h 05m1 stop
Iberia Logo
11:55 - 22:24
LHR
-
SJU
14h 29m1 stop
£393Iberia
Fri, 13 Feb - Sat, 21 Feb
Iberia Logo
17:51 - 12:20
SJU
-
LHR
14h 29m1 stop
Iberia Logo
10:45 - 19:55
LHR
-
SJU
13h 10m1 stop
£421Iberia
Thu, 22 Jan - Thu, 29 Jan
KLM Logo
14:25 - 06:50
SJU
-
LHR
12h 25m1 stop
KLM Logo
06:30 - 20:58
LHR
-
SJU
18h 28m2 stops
£422KLM
Thu, 22 Jan - Wed, 4 Feb
American Airlines Logo
13:58 - 07:20
SJU
-
LHR
13h 22m1 stop
American Airlines Logo
08:25 - 19:55
LHR
-
SJU
15h 30m1 stop
£424American Airlines
Thu, 22 Jan - Wed, 4 Feb
JetBlue Logo
06:15 - 06:55
SJU
-
LHR
20h 40m1 stop
JetBlue Logo
12:20 - 23:58
LHR
-
SJU
15h 38m1 stop
£425JetBlue
Thu, 22 Jan - Wed, 4 Feb
Air France Logo
15:55 - 09:00
SJU
-
LHR
13h 05m1 stop
Air France Logo
06:20 - 20:58
LHR
-
SJU
18h 38m2 stops
£426Air France
Thu, 22 Jan - Wed, 4 Feb
Multiple Airlines Logo
02:05 - 06:30
SJU
-
LHR
24h 25m2 stops
Multiple Airlines Logo
06:50 - 22:22
LHR
-
SJU
19h 32m2 stops
£427Multiple Airlines
Tue, 3 Feb - Wed, 11 Feb
American Airlines Logo
14:47 - 09:15
SJU
-
LHR
14h 28m1 stop
American Airlines Logo
06:15 - 16:35
LHR
-
SJU
14h 20m1 stop
£427American Airlines
Thu, 19 Feb - Sun, 1 Mar
United Airlines Logo
07:45 - 07:30
SJU
-
LHR
19h 45m1 stop
United Airlines Logo
06:50 - 22:22
LHR
-
SJU
19h 32m2 stops
£428United Airlines
Mon, 19 Jan - Mon, 26 Jan
KLM Logo
18:27 - 16:05
SJU
-
LHR
17h 38m2 stops
KLM Logo
06:30 - 20:58
LHR
-
SJU
18h 28m2 stops
£429KLM
Thu, 22 Jan - Wed, 4 Feb

Delta flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

Our best Delta deals on San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flight tickets
Delta
19 Feb
SJU06:15San Juan Luis Munoz Marin Intl
20h 50m
2 stops
LHR07:05London Heathrow
1 Mar
LHR10:10London Heathrow
17h 48m
2 stops
SJU23:58San Juan Luis Munoz Marin Intl
£456
Find similar
Delta
22 Apr
SJU12:50San Juan Luis Munoz Marin Intl
17h 30m
2 stops
LHR11:20London Heathrow
10 May
LHR08:05London Heathrow
19h 49m
2 stops
SJU22:54San Juan Luis Munoz Marin Intl
£506
Find similar
Delta
18 Feb
SJU07:30San Juan Luis Munoz Marin Intl
21h 15m
2 stops
LHR08:45London Heathrow
26 Feb
LHR10:10London Heathrow
17h 48m
2 stops
SJU23:58San Juan Luis Munoz Marin Intl
£520
Find similar

JetBlue flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

Our best JetBlue deals on San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flight tickets
JetBlue
22 Jan
SJU06:15San Juan Luis Munoz Marin Intl
20h 40m
1 stop
LHR06:55London Heathrow
4 Feb
LHR12:20London Heathrow
15h 38m
1 stop
SJU23:58San Juan Luis Munoz Marin Intl
£425
Find similar
JetBlue
18 Feb
SJU05:15San Juan Luis Munoz Marin Intl
12h 25m
1 stop
LHR21:40London Heathrow
26 Feb
LHR12:20London Heathrow
15h 24m
1 stop
SJU23:44San Juan Luis Munoz Marin Intl
£436
Find similar
JetBlue
16 Jan
SJU14:20San Juan Luis Munoz Marin Intl
15h 10m
1 stop
LHR09:30London Heathrow
26 Jan
LHR08:05London Heathrow
15h 21m
1 stop
SJU19:26San Juan Luis Munoz Marin Intl
£450
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 23 December 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport 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

11:55-22:24

1 stop14h 29m

£393

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

17:51-12:20

1 stop14h 29m

London Heathrow

Thu 29/1

10:45-19:55

1 stop13h 10m

£421

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

14:25-06:50

1 stop12h 25m

London Heathrow

Wed 4/2

06:30-20:58

2 stops18h 28m

£422

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

13:58-07:20

1 stop13h 22m

London Heathrow

Wed 4/2

08:25-19:55

1 stop15h 30m

£424

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

06:15-06:55

1 stop20h 40m

London Heathrow

Wed 4/2

12:20-23:58

1 stop15h 38m

£425

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

15:55-09:00

1 stop13h 05m

London Heathrow

Wed 4/2

06:20-20:58

2 stops18h 38m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 3/2

02:05-06:30

2 stops24h 25m

London Heathrow

Wed 11/2

06:50-22:22

2 stops19h 32m

£427

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

06:15-16:35

1 stop14h 20m

£427

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 19/1

07:45-07:30

1 stop19h 45m

London Heathrow

Mon 26/1

06:50-22:22

2 stops19h 32m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

18:27-16:05

2 stops17h 38m

London Heathrow

Wed 4/2

06:30-20:58

2 stops18h 28m

£429

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San Juan Luis Munoz Marin Intl Airport 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

What is the typical price of a round-trip flight between San Juan Luis Munoz Marin Intl Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, September is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £468. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Juan Luis Munoz Marin Intl Airport averaging around £491.

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 Luis Munoz Marin Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £469. 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 £1,057.

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 Luis Munoz Marin Intl Airport to London Heathrow Airport at midday for as low as £538. 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 £1,055 on average. Flights to London Heathrow Airport from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £619 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 Luis Munoz Marin Intl Airport for as low as £476 on momondo.

How have San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flight prices changed over time?

As of December 2025, prices for San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (SJU to LHR) flight deals and tips

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

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport takes 12h 25m
There are no direct flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport. There are no popular flight routes from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport.
Search flight deals

  • How far is San Juan Luis Munoz Marin Intl to London Heathrow by plane?

    A flight from San Juan Luis Munoz Marin Intl to London Heathrow will travel around 4178.9 mi. By plane, this route typically takes 12h 25m.

  • When did momondo last update prices for flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    Prices for flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport were last updated today.

  • How old do you have to be to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport.

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

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Juan to London . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to London from San Juan with this policy.

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

momondo helps you find the best flight between San Juan and London 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 London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from San Juan. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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