London

$256+ Cheap flights from San Juan 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
Dec 25 — Jan 11
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The best prices from San Juan to London are usually found in April or January, booked 40 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from San Juan to London

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 20, 2024.

Round-trip from

$634
(JetBlue)

One-way from

$256
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$864
From San Juan to London (LON)
One-way flight from San Juan to London (LON)
High demand for flights, 17% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for round-trip flights in December 2024

Find flight deals from San Juan to London

Cheapest flights from San Juan to London
Explore the most affordable flight options available from San Juan to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2024.

This JetBlue deal was found by Cheapflights users on 12/20. 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.
Sun 12/291:52 pmSJU - LHR
1 stop15h 38mJetBlue
Sat 1/1112:20 pmLHR - SJU
1 stop15h 01mJetBlue
Deal found 12/20$736
This FlightHub deal was found by Cheapflights users on 12/19. 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.
Mon 12/239:20 pmSJU - LHR
1 stop16h 55mIberia
Mon 12/306:45 pmLHR - SJU
1 stop29h 00mIberia
Deal found 12/19$1,247
This Delta deal was found by Cheapflights users on 12/19. 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.
Sun 12/292:10 pmSJU - LHR
1 stop17h 30mDelta
Wed 1/83:50 pmLHR - SJU
2 stops26h 46mDelta
Deal found 12/19$1,398
This Air Canada deal was found by Cheapflights users on 12/20. 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.
Sat 12/284:00 pmSJU - LHR
1 stop15h 50mAir Canada
Sat 1/112:30 pmLHR - SJU
2 stops26h 26mAir Canada
Deal found 12/20$1,440
This Aeromexico deal was found by Cheapflights users on 12/20. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/303:30 pmSJU - LHR
2 stops17h 10mAir France
Wed 1/812:25 pmLHR - SJU
2 stops36h 41mAir France
Deal found 12/20$1,605
This Avianca deal was found by Cheapflights users on 12/20. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:05 pmSJU - LHR
1 stop16h 30mAvianca
Mon 12/309:40 pmLHR - SJU
1 stop23h 00mAvianca
Deal found 12/20$1,647
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Mon 12/304:52 pmSJU - LHR
1 stop35h 03mUnited Airlines
Mon 1/611:10 amLHR - SJU
2 stops31h 30mUnited Airlines
Deal found 12/19$1,687
This Turkish Airlines deal was found by Cheapflights users on 12/19. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/301:50 pmSJU - LHR
2 stops22h 20mMultiple Airlines
Wed 1/810:35 pmLHR - SJU
2 stops25h 14mMultiple Airlines
Deal found 12/19$1,796
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/20. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/295:39 pmSJU - LGW
2 stops23h 01mTAP AIR PORTUGAL
Wed 1/810:40 amLGW - SJU
2 stops30h 12mTAP AIR PORTUGAL
Deal found 12/20$1,849
This British Airways deal was found by Cheapflights users on 12/18. 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.
Thu 12/266:05 pmSJU - LHR
1 stop14h 15mBritish Airways
Sat 1/411:45 amLHR - SJU
1 stop16h 41mBritish Airways
Deal found 12/18$2,184
This Mytrip deal was found by Cheapflights users on 12/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/201:20 pmSJU - LGW
2 stops23h 05mMultiple Airlines
Mon 12/232:00 pmLGW - SJU
1 stop15h 25mMultiple Airlines
Deal found 12/19$2,595
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/201:50 pmSJU - LGW
2 stops41h 05mIcelandair
Mon 12/2311:55 amLGW - SJU
2 stops18h 50mIcelandair
Deal found 12/19$2,760

Find flights from San Juan to London within your budget

Customize your flight search to find flights from San Juan 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 December 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/13

1:55 am-8:45 pm

1 stop14h 50m

London Heathrow

Sat 2/1

7:25 am-7:49 pm

1 stop16h 24m

$634

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Wed 1/22

9:20 pm-6:50 pm

1 stop17h 30m

London Gatwick

Wed 1/29

11:00 am-7:45 pm

1 stop12h 45m

$696

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 3/17

5:29 pm-12:20 pm

1 stop14h 51m

London Heathrow

Mon 3/31

8:00 pm-10:22 pm

2 stops31h 22m

$716

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 1/22

2:29 pm-7:05 am

1 stop12h 36m

London Heathrow

Wed 1/29

4:35 pm-2:36 pm

2 stops26h 01m

$733

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sat 5/3

3:35 pm-7:00 am

1 stop34h 25m

London Gatwick

Thu 5/8

10:00 am-2:45 pm

1 stop33h 45m

$737

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 2/27

6:29 pm-12:20 pm

1 stop13h 51m

London Heathrow

Sun 3/9

6:05 am-10:03 pm

2 stops19h 58m

$765

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 4/26

3:05 pm-10:20 am

1 stop14h 15m

London Heathrow

Mon 5/5

9:15 am-8:05 pm

2 stops15h 50m

$806

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 2/11

12:44 pm-3:45 pm

2 stops23h 01m

London Gatwick

Tue 2/25

10:40 am-3:16 am

2 stops20h 36m

$864

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 3/27

3:25 pm-5:30 pm

2 stops22h 05m

London Heathrow

Thu 4/10

6:00 am-12:02 am

2 stops23h 02m

$893

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 3/27

11:51 am-11:10 am

2 stops19h 19m

London Heathrow

Thu 4/10

10:25 am-4:20 pm

2 stops34h 55m

$902

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 40 results
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Best time to book a flight from San Juan to London

Have a flexible travel schedule? Discover the best time to fly to London from San Juan 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.

Travel insights for flights from San Juan to London

Get recent, data-driven insights about flights from San Juan to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Juan to London?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to London. Price data was last updated on December 13, 2024.

The best time to book flights from San Juan to London is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Juan to London?

Currently, November is the cheapest month in which you can book a flight from San Juan to London (average of $661). Flying from San Juan to London in June is currently the most expensive (average of $1,135). 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 SJU to LON?

Find hourly flight availability from San Juan 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 December 20, 2024.

It’s typically best to fly out from San Juan to London at noon. Doing so could potentially save you 11% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from San Juan to London?

Use this chart to determine the cheapest time to fly round-trip from San Juan to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Juan to London flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 20, 2024.
See what other customers who have flown with JetBlue, British Airways and Delta from San Juan to London have to say. 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.
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

8.0
Very good
8,601 reviews
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

7.7
Good
1,285 reviews
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

7.4
Good
1,502 reviews
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

7.4
Good
9,043 reviews
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

7.4
Good
3,267 reviews
8.0
Very good
8,601 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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 San Juan 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 flying from San Juan to London round-trip?

    Cheapflights users have booked flights from San Juan to London round-trip from $634. Other airlines that can offer you cheap pricing are Iberia, from $696, and British Airways, from $716. JetBlue is currently priced 21% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Juan to London one-way?

    The cheapest airlines for a one-way flight from San Juan to London are JetBlue ($306), British Airways ($448), and Iberia ($452).

  • Can I find deals for flights from San Juan to London that include hotel bookings?

    Yes. In addition to deals on San Juan to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to London?

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

  • Can I find deals for business class flights from San Juan to London?

    Yes. Cheapflights offers flight deals from San Juan 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 San Juan to London?

    Currently, November is the cheapest month in which you can book a flight from San Juan to London (average of $661). Flying from San Juan to London in June is currently the most expensive (average of $1,135). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Juan to London

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

Top 7 airlines flying from San Juan to London

Discover the top 7 airlines that operate flights from San Juan 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 December 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$549Average$775FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$582Average$841FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$587Average$875FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$632Average$780FlexibilityNo cancel feeOn-time70%
IberiaCheapest$639Average$991FlexibilityNo cancel feeOn-time77%
DeltaCheapest$651Average$797FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$654Average$820FlexibilityNo cancel feeOn-time72%
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