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$282+ Cheap flights from Puerto Rico to London (LON)

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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$648
(JetBlue)

One-way from

$282
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,085
From Puerto Rico to London (LON)
Search Deals
One-way flight from Puerto Rico to London (LON)
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Highest demand for flights based on searches. 16% potential increase in price ($159 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This JetBlue deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:59 amSJU - LHR
1 stop15h 46mJetBlue
Thu 11/612:20 pmLHR - SJU
1 stop18h 25mJetBlue
Deal found 6/12$648
This JetBlue deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/208:50 amSJU - LGW
1 stop19h 45mJetBlue
Sun 8/2412:10 pmLGW - SJU
1 stop18h 21mJetBlue
Deal found 6/9$651
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/241:36 pmSJU - LHR
1 stop14h 49mBritish Airways
Wed 10/17:50 amLHR - SJU
1 stop15h 40mBritish Airways
Deal found 6/10$666
This Iberia deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:04 amSJU - LHR
1 stop22h 21mIberia
Wed 1/286:15 amLHR - SJU
1 stop14h 15mIberia
Deal found 6/11$667
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:52 pmSJU - LHR
1 stop14h 23mUnited Airlines
Wed 11/268:30 amLHR - SJU
2 stops20h 06mUnited Airlines
Deal found 6/10$685
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/104:42 pmSJU - LHR
1 stop15h 03mAmerican Airlines
Thu 9/187:45 amLHR - SJU
2 stops15h 50mAmerican Airlines
Deal found 6/11$694
This KLM deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:34 pmSJU - LGW
1 stop15h 26mKLM
Mon 9/812:00 pmLGW - SJU
1 stop16h 51mKLM
Deal found 6/12$704
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2210:04 amSJU - LGW
1 stop15h 51mMultiple Airlines
Sun 8/2410:00 amLGW - SJU
1 stop15h 02mMultiple Airlines
Deal found 6/9$713
This Air France deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:34 pmSJU - LGW
1 stop15h 26mAir France
Mon 8/2512:00 pmLGW - SJU
1 stop16h 51mAir France
Deal found 6/9$720
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:40 pmSJU - LHR
2 stops30h 50mAir Canada
Fri 10/105:40 pmLHR - SJU
2 stops35h 17mAir Canada
Deal found 6/10$736
This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/221:16 pmSJU - LHR
1 stop12h 29mKLM
Mon 9/110:55 amLHR - SJU
1 stop17h 56mKLM
Deal found 6/11$753
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/292:28 pmSJU - LHR
2 stops17h 47mDelta
Fri 11/712:30 pmLHR - SJU
1 stop14h 47mDelta
Deal found 6/12$757

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated June 12, 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

Tue 10/28

12:59 am-8:45 pm

1 stop15h 46m

London Heathrow

Thu 11/6

12:20 pm-2:45 am

1 stop18h 25m

$648

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Wed 8/20

8:50 am-9:35 am

1 stop19h 45m

London Gatwick

Sun 8/24

12:10 pm-1:31 am

1 stop18h 21m

$651

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 9/24

1:36 pm-9:25 am

1 stop14h 49m

London Heathrow

Wed 10/1

7:50 am-6:30 pm

1 stop15h 40m

$666

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 8/5

6:04 am-9:25 am

1 stop22h 21m

London Heathrow

Wed 1/28

6:15 am-4:30 pm

1 stop14h 15m

$667

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 11/18

8:30 am-7:10 am

2 stops18h 40m

London Heathrow

Wed 11/26

8:30 am-12:36 am

2 stops20h 06m

$685

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 9/10

4:42 pm-12:45 pm

1 stop15h 03m

London Heathrow

Thu 9/18

7:45 am-6:35 pm

2 stops15h 50m

$694

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Mon 8/25

1:34 pm-10:00 am

1 stop15h 26m

London Gatwick

Mon 9/8

12:00 pm-11:51 pm

1 stop16h 51m

$704

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Fri 8/22

10:04 am-6:55 am

1 stop15h 51m

London Gatwick

Sun 8/24

10:00 am-8:02 pm

1 stop15h 02m

$713

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Wed 8/20

1:34 pm-10:00 am

1 stop15h 26m

London Gatwick

Mon 8/25

12:00 pm-11:51 pm

1 stop16h 51m

$720

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 9/25

6:40 pm-6:30 am

2 stops30h 50m

London Heathrow

Fri 10/10

5:40 pm-11:57 pm

2 stops35h 17m

$736

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 39 results
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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 round-trip 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, November is the cheapest month in which you can book a flight from Puerto Rico to London (average of $661). Flying from Puerto Rico to London in June is currently the most expensive (average of $1,108). 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 June 12, 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 June 12, 2025.
See what other customers who have flown with Delta, KLM and Air France from Puerto Rico to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,925 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    $321 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Avianca and KLM, with prices starting from $381 and $436, respectively.

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

    The most popular flight routes from Puerto Rico to London are San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick and Vieques - London Heathrow.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Puerto Rico to London (average of $661). Flying from Puerto Rico to London in June is currently the most expensive (average of $1,108). 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

Traveling to a place near Puerto Rico?

Book flights to Puerto Rico if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Sutton
Aylesbury
Chelmsford
Brentwood
Chichester
Wembley
Arundel

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.

Top 7 airlines flying from Puerto Rico to London

Discover the top 7 airlines that operate flights from Puerto Rico to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$622Average$775FlexibilityNo cancel feeOn-time62%
IberiaCheapest$639Average$1,200FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$649Average$795FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$651Average$780FlexibilityNo cancel feeOn-time70%
DeltaCheapest$652Average$797FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$654Average$840FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$681Average$1,005FlexibilityNo cancel feeOn-time71%

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