Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £231

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 22/4. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
United Airlines Logo
07:40 - 06:45
SJU
-
LHR
18h 05m
1 stop
United Airlines Logo
07:30 - 21:24
LHR
-
SJU
18h 54m
2 stops
£442United Airlines
Wed, 22 Apr - Wed, 29 Apr
United Airlines Logo
01:00 - 06:55
SJU
-
LHR
24h 55m
2 stops
United Airlines Logo
07:30 - 21:24
LHR
-
SJU
18h 54m
2 stops
£443United Airlines
Tue, 21 Apr - Wed, 29 Apr
JetBlue Logo
14:25 - 06:55
SJU
-
LHR
12h 30m
1 stop
JetBlue Logo
07:45 - 02:54
LHR
-
SJU
23h 09m
1 stop
£449JetBlue
Wed, 4 Mar - Sun, 8 Mar
JetBlue Logo
10:55 - 09:30
SJU
-
LHR
18h 35m
1 stop
JetBlue Logo
09:20 - 22:49
LHR
-
SJU
17h 29m
1 stop
£449JetBlue
Wed, 4 Mar - Mon, 9 Mar
JetBlue Logo
13:44 - 09:30
SJU
-
LHR
15h 46m
1 stop
JetBlue Logo
07:45 - 23:29
LHR
-
SJU
19h 44m
1 stop
£450JetBlue
Wed, 4 Mar - Sun, 8 Mar
Iberia Logo
15:44 - 11:05
SJU
-
LHR
14h 21m
1 stop
Iberia Logo
15:35 - 09:13
LHR
-
SJU
22h 38m
1 stop
£451Iberia
Wed, 29 Apr - Wed, 6 May
KLM Logo
12:55 - 11:20
SJU
-
LHR
17h 25m
1 stop
KLM Logo
11:15 - 23:13
LHR
-
SJU
16h 58m
1 stop
£455KLM
Wed, 22 Apr - Wed, 29 Apr
Air Canada Logo
01:00 - 08:35
SJU
-
LHR
26h 35m
2 stops
Air Canada Logo
09:30 - 23:50
LHR
-
SJU
19h 20m
2 stops
£458Air Canada
Tue, 28 Apr - Wed, 6 May
JetBlue Logo
05:10 - 06:55
SJU
-
LHR
21h 45m
1 stop
JetBlue Logo
08:40 - 22:08
LHR
-
SJU
18h 28m
1 stop
£461JetBlue
Wed, 25 Mar - Wed, 1 Apr
JetBlue Logo
14:25 - 06:55
SJU
-
LHR
12h 30m
1 stop
JetBlue Logo
08:05 - 21:24
LHR
-
SJU
17h 19m
1 stop
£482JetBlue
Thu, 5 Mar - Mon, 9 Mar

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
4 Mar
SJU14:25San Juan Luis Munoz Marin Intl
12h 30m
1 stop
LHR06:55London Heathrow
8 Mar
LHR07:45London Heathrow
23h 09m
1 stop
SJU02:54San Juan Luis Munoz Marin Intl
£449
JetBlue
4 Mar
SJU10:55San Juan Luis Munoz Marin Intl
18h 35m
1 stop
LHR09:30London Heathrow
9 Mar
LHR09:20London Heathrow
17h 29m
1 stop
SJU22:49San Juan Luis Munoz Marin Intl
£449
JetBlue
4 Mar
SJU13:44San Juan Luis Munoz Marin Intl
15h 46m
1 stop
LHR09:30London Heathrow
8 Mar
LHR07:45London Heathrow
19h 44m
1 stop
SJU23:29San Juan Luis Munoz Marin Intl
£450

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

Our best KLM deals on San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flight tickets
KLM
22 Apr
SJU13:25San Juan Luis Munoz Marin Intl
14h 25m
1 stop
LHR08:50London Heathrow
29 Apr
LHR09:20London Heathrow
18h 53m
1 stop
SJU23:13San Juan Luis Munoz Marin Intl
£455
KLM
23 Apr
SJU17:34San Juan Luis Munoz Marin Intl
14h 41m
1 stop
LHR13:15London Heathrow
9 May
LHR11:20London Heathrow
17h 23m
1 stop
SJU23:43San Juan Luis Munoz Marin Intl
£529
KLM
21 Mar
SJU13:14San Juan Luis Munoz Marin Intl
13h 36m
1 stop
LHR06:50London Heathrow
20 Apr
LHR13:25London Heathrow
14h 47m
1 stop
SJU23:12San Juan Luis Munoz Marin Intl
£530

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 22 February 2026.
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

Wed 22/4

07:40-06:45

1 stop18h 05m

London Heathrow

Wed 29/4

07:30-21:24

2 stops18h 54m

£442

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 21/4

01:00-06:55

2 stops24h 55m

London Heathrow

Wed 29/4

07:30-21:24

2 stops18h 54m

£443

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/3

14:25-06:55

1 stop12h 30m

London Heathrow

Sun 8/3

07:45-02:54

1 stop23h 09m

£449

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/3

10:55-09:30

1 stop18h 35m

London Heathrow

Mon 9/3

09:20-22:49

1 stop17h 29m

£449

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/3

13:44-09:30

1 stop15h 46m

London Heathrow

Sun 8/3

07:45-23:29

1 stop19h 44m

£450

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/4

15:44-11:05

1 stop14h 21m

London Heathrow

Wed 6/5

15:35-09:13

1 stop22h 38m

£451

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

12:55-11:20

1 stop17h 25m

London Heathrow

Wed 29/4

11:15-23:13

1 stop16h 58m

£455

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 28/4

01:00-08:35

2 stops26h 35m

London Heathrow

Wed 6/5

09:30-23:50

2 stops19h 20m

£458

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 25/3

05:10-06:55

1 stop21h 45m

London Heathrow

Wed 1/4

08:40-22:08

1 stop18h 28m

£461

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/3

14:25-06:55

1 stop12h 30m

London Heathrow

Mon 9/3

08:05-21:24

1 stop17h 19m

£482

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

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 £475. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from San Juan Luis Munoz Marin Intl Airport averaging around £507.

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 £618 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 £524 on momondo.

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

As of February 2026, prices for San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flights are approximately 18% 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 30m

Direct flights

None
The fastest flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport takes 12h 30m
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 30m.

  • 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?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Stratford-upon-Avon
Swindon
Southend-on-Sea
Ipswich
Canterbury
Ilford
Poole
Guildford
Chelmsford
Wembley
Hayes
Dover
Folkestone

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 24/3
Tue 31/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London