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Cheap flights from Puerto Rico to London from £164

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
13 Jul — 20 Jul1
1 adult

Cheap flight deals from Puerto Rico to London

Keep the following information in mind while searching for Puerto Rico to London flight deals. Data was last updated 8 July 2025.

Round-trip from

£424

One-way from

£164

Popular in

June

Cheapest in

September

Average price

£724
United Airlines
  • United Airlines
  • 29/10-6/11
  • 3 total stops
  • 34h 06m total
  • Puerto Rico to London
Search Deals
23/7
  • 23/7
  • 1 total stop
  • 19h 20m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£83 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Puerto Rico to London

Cheapest flights from Puerto Rico to London
Explore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.

Wed 13/813:16SJU - LHR
1 stop12h 29mKLM
Wed 20/809:20LHR - SJU
1 stop17h 47mKLM
Deal found 7/7£419
Wed 29/1013:20SJU - LHR
1 stop13h 00mUnited Airlines
Thu 6/1107:30LHR - SJU
2 stops21h 06mUnited Airlines
Deal found 7/7£424
Sun 24/813:34SJU - LGW
1 stop15h 26mAir France
Sun 7/912:00LGW - SJU
1 stop16h 51mAir France
Deal found 7/7£424
Wed 29/1007:30SJU - LHR
2 stops19h 00mAir Canada
Fri 7/1113:25LHR - SJU
2 stops27h 24mAir Canada
Deal found 7/7£430
Mon 25/806:00SJU - LHR
1 stop22h 25mIberia
Mon 8/909:15LHR - SJU
1 stop14h 15mIberia
Deal found 6/7£436
Wed 15/1013:30SJU - LHR
2 stops26h 15mLufthansa
Tue 28/1008:45LHR - SJU
2 stops31h 04mLufthansa
Deal found 7/7£440
Mon 25/813:16SJU - LHR
1 stop16h 14mDelta
Mon 8/906:30LHR - SJU
2 stops22h 21mDelta
Deal found 7/7£461
Sat 2/813:34SJU - LGW
1 stop15h 26mKLM
Sun 17/812:00LGW - SJU
1 stop16h 51mKLM
Deal found 7/7£461
Sun 17/807:00SJU - LGW
1 stop22h 00mVirgin Atlantic
Sun 24/812:00LGW - SJU
1 stop16h 51mVirgin Atlantic
Deal found 7/7£462
Tue 16/901:59SJU - LGW
2 stops23h 21mMultiple Airlines
Sat 27/913:05LGW - SJU
2 stops29h 53mMultiple Airlines
Deal found 7/7£482
Wed 24/913:37SJU - LHR
1 stop15h 58mAmerican Airlines
Wed 8/1006:15LHR - SJU
1 stop13h 55mAmerican Airlines
Deal found 7/7£491
Sun 9/1107:25SJU - LGW
2 stops21h 35mAmerican Airlines
Thu 20/1111:20LGW - SJU
2 stops18h 50mAmerican Airlines
Deal found 7/7£494

Cheapflights Fare Finder

Customise your flight search to find flights from Puerto Rico to London 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, Cheapflights users made 858,174 searches. Data last updated 8 July 2025.
Use the filters below to find and compare flights from Puerto Rico to London that are best for you.

Fly from

Puerto Rico

Fly to

London

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

13:20-06:20

1 stop13h 00m

London Heathrow

Thu 6/11

07:30-00:36

2 stops21h 06m

£424

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 24/8

13:34-10:00

1 stop15h 26m

London Gatwick

Sun 7/9

12:00-23:51

1 stop16h 51m

£424

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

07:30-06:30

2 stops19h 00m

London Heathrow

Fri 7/11

13:25-12:49

2 stops27h 24m

£430

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 25/8

06:00-09:25

1 stop22h 25m

London Heathrow

Mon 8/9

09:15-18:30

1 stop14h 15m

£436

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 15/10

13:30-20:45

2 stops26h 15m

London Heathrow

Tue 28/10

08:45-11:49

2 stops31h 04m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 21/8

17:46-13:30

1 stop14h 44m

London Heathrow

Thu 28/8

10:55-23:51

1 stop17h 56m

£456

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 25/8

13:16-10:30

1 stop16h 14m

London Heathrow

Mon 8/9

06:30-23:51

2 stops22h 21m

£461

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sat 2/8

13:34-10:00

1 stop15h 26m

London Gatwick

Sun 17/8

12:00-23:51

1 stop16h 51m

£461

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 16/9

01:59-06:20

2 stops23h 21m

London Gatwick

Sat 27/9

13:05-13:58

2 stops29h 53m

£482

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 24/9

13:37-10:35

1 stop15h 58m

London Heathrow

Wed 8/10

06:15-15:10

1 stop13h 55m

£491

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 47 results
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5

Best time to book a flight from Puerto Rico to London

Have a flexible travel schedule? Discover the best time to fly to London from Puerto Rico with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Puerto Rico to London

What is the cheapest month to book a flight from Puerto Rico to London?

Currently, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PR to LON?

Find hourly flight availability from Puerto Rico to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 July 2025.

When flying from Puerto Rico to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 8 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAir France from Puerto Rico to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very Good
7,963 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
KLM
7.8
Good
1,368 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Air France
7.5
Good
1,467 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
United Airlines
7.4
Good
8,844 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Virgin Atlantic
7.4
Good
653 reviews
Delta
8.0
Very Good
7,963 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Puerto Rico to London one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £217. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Puerto Rico to London for a low price.

  • What are the most popular routes from Puerto Rico to London?

    When deciding which route to take from Puerto Rico to London consider San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City as they are the most popular.

  • Can I find deals for flights from Puerto Rico to London that include hotel bookings?

    Yes. In addition to deals on Puerto Rico to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Puerto Rico to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to London.

  • Can I find deals for business class flights from Puerto Rico to London?

    Yes. Cheapflights offers flight deals from Puerto Rico to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Puerto Rico to London?

    Currently, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Puerto Rico?

Book flights to Puerto Rico if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Maidstone
Guildford
Chichester

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Puerto Rico to London

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Puerto Rico to London?

Deals for Puerto Rico to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Puerto Rico.

Can Cheapflights find flights from Puerto Rico to London with no change fees?

Certainly. Search results for flights to London from Puerto Rico shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Puerto Rico to London become cheaper?

Not ready to book yet? You can track prices for flights from Puerto Rico to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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