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$304+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
Mar 30 — Apr 61
Mon 3/30
Mon 4/6
1 adult, Economy
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Cheap 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 February 28, 2026.

This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:15 pm
SJU
-
LHR
1 stop14h 40m
JetBlue
Sun 3/87:45 am
LHR
-
SJU
1 stop23h 09m
JetBlue
Deal found 2/24$605
This Priceline deal was found by Cheapflights users on 2/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:10 am
SJU
-
LHR
1 stop21h 45m
JetBlue
Wed 4/18:40 am
LHR
-
SJU
1 stop21h 54m
JetBlue
Deal found 2/25$621
This Priceline deal was found by Cheapflights users on 2/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:01 am
SJU
-
LHR
1 stop20h 29m
JetBlue
Tue 4/78:40 am
LHR
-
SJU
1 stop21h 54m
JetBlue
Deal found 2/26$691
This Expedia deal was found by Cheapflights users on 2/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/211:59 pm
SJU
-
LHR
1 stop17h 41m
JetBlue
Wed 3/117:25 am
LHR
-
SJU
1 stop23h 29m
JetBlue
Deal found 2/26$705
This JetBlue deal was found by Cheapflights users on 2/27. 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.
Thu 4/237:58 pm
SJU
-
LHR
1 stop19h 47m
JetBlue
Sat 5/98:15 am
LHR
-
SJU
1 stop20h 52m
JetBlue
Deal found 2/27$713
This FlightHub deal was found by Cheapflights users on 2/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:01 am
SJU
-
LHR
1 stop20h 29m
JetBlue
Tue 4/78:40 am
LHR
-
SJU
1 stop18h 28m
JetBlue
Deal found 2/25$716
This FlightHub deal was found by Cheapflights users on 2/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:01 am
SJU
-
LHR
1 stop20h 29m
JetBlue
Sun 4/128:15 am
LHR
-
SJU
1 stop20h 52m
JetBlue
Deal found 2/25$721
This JetBlue deal was found by Cheapflights users on 2/27. 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.
Thu 4/237:58 pm
SJU
-
LHR
1 stop19h 47m
JetBlue
Wed 4/298:15 am
LHR
-
SJU
1 stop17h 45m
JetBlue
Deal found 2/27$722
This Norse deal was found by Cheapflights users on 2/27. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:45 am
SJU
-
LGW
1 stop27h 15m
Multiple Airlines
Tue 4/72:00 pm
LGW
-
SJU
1 stop23h 53m
Multiple Airlines
Deal found 2/27$724
This JetBlue deal was found by Cheapflights users on 2/27. 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 10/71:00 pm
SJU
-
LHR
1 stop12h 30m
JetBlue
Fri 10/168:15 am
LHR
-
SJU
1 stop18h 09m
JetBlue
Deal found 2/27$728
This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
SJU
-
LGW
1 stop22h 35m
JetBlue
Sun 9/612:20 pm
LGW
-
SJU
1 stop18h 08m
JetBlue
Deal found 2/24$791
This Priceline deal was found by Cheapflights users on 2/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:30 am
SJU
-
LGW
1 stop20h 05m
JetBlue
Mon 8/1712:20 pm
LGW
-
SJU
1 stop18h 08m
JetBlue
Deal found 2/26$833

Find 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 February 28, 2026.

Round-trip from

$621
(Priceline)

One-way from

$304
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$584
From Puerto Rico to London (LON)
Search Deals
One-way flight from Puerto Rico to London (LON)
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($195 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 28, 2026.
Use the filters below to find and compare flights from Puerto Rico to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 4/21

12:00 pm-9:30 am

1 stop16h 30m

London Heathrow

Thu 4/30

8:15 am-12:07 am

1 stop20h 52m

$757

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 3/16

3:52 pm-7:55 am

1 stop36h 03m

London Heathrow

Tue 3/24

8:30 am-11:36 pm

2 stops19h 06m

$781

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/22

10:00 am-9:30 am

1 stop18h 30m

London Heathrow

Thu 4/30

11:55 am-2:07 am

1 stop19h 12m

$785

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 4/13

1:21 pm-6:45 am

1 stop12h 24m

London Heathrow

Mon 4/20

8:55 am-11:59 pm

2 stops20h 04m

$788

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 3/22

1:14 pm-6:50 am

1 stop13h 36m

London Heathrow

Mon 3/30

9:20 am-11:15 pm

1 stop18h 55m

$799

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 8/5

2:35 pm-12:05 pm

2 stops16h 30m

London Heathrow

Mon 8/24

3:50 pm-1:30 pm

2 stops26h 40m

$827

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 4/24

1:25 pm-6:45 am

1 stop12h 20m

London Heathrow

Wed 4/29

6:35 pm-1:25 pm

2 stops23h 50m

$835

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 8/13

4:50 pm-9:35 am

1 stop11h 45m

London Gatwick

Mon 8/17

12:20 pm-1:28 am

1 stop18h 08m

$848

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Mon 3/16

5:40 pm-10:30 pm

2 stops24h 50m

London Gatwick

Tue 3/24

6:25 am-2:27 am

2 stops24h 02m

$943

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 7/13

2:55 pm-11:35 am

1 stop15h 40m

London Heathrow

Fri 7/24

8:00 am-8:34 pm

1 stop17h 34m

$946

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/27

Showing 1-10 of 37 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Puerto Rico to London (average of $101). Flying from Puerto Rico to London in June is currently the most expensive (average of $924). 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.

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 February 28, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines 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
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
Delta
7.9
Good
8,244 reviews
Delta
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
United Airlines
7.4
Good
9,366 reviews
Delta
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
American Airlines
7.2
Good
11,372 reviews
Delta
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
JetBlue
7.2
Good
2,896 reviews
Delta
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
British Airways
6.7
Okay
7,772 reviews
Delta
7.9
Good
8,244 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.

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.

  • How long is the flight from Puerto Rico to London?

    JetBlue, United Airlines, and Delta can get you from Puerto Rico to London in just under 12h 24m. Your travel time can differ by up to 23h 39m. The distance from Puerto Rico to London is about 4179 mi. This flight may include one or multiple stops.

  • 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, September is the cheapest month in which you can book a flight from Puerto Rico to London (average of $101). Flying from Puerto Rico to London in June is currently the most expensive (average of $924). 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

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Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Puerto Rico to London

Discover the top 5 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 February 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$846FlexibilityNo cancel feeOn-time62%
Virgin AtlanticCheapest$584Average$711FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$600Average$795FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$605Average$974FlexibilityNo cancel feeOn-time71%
DeltaCheapest$652Average$859FlexibilityNo cancel feeOn-timeN/A

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