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$256+ Cheap flights from San Juan to Heathrow (LHR)

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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The best prices from San Juan to London Heathrow are usually found in February or January, booked 26 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from San Juan to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Heathrow (LHR). 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 22, 2024.

Round-trip from

$633
(JetBlue)

One-way from

$256
(JetBlue)

Popular in

June

Cheapest in

February

Average price

$865
From San Juan to London Heathrow
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One-way flight from San Juan to London Heathrow
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High demand for flights, 16% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from San Juan to Heathrow

Cheapest flights from San Juan to Heathrow
Explore the most affordable flight options available from San Juan to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This JetBlue deal was found by Cheapflights users on 12/22. 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 12/297:00 amSJU - LHR
1 stop18h 55mJetBlue
Sat 1/117:25 amLHR - SJU
1 stop19h 56mJetBlue
Deal found 12/22$685
This Delta deal was found by Cheapflights users on 12/22. 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 12/2912:45 pmSJU - LHR
1 stop18h 55mDelta
Wed 1/88:05 pmLHR - SJU
2 stops25h 09mDelta
Deal found 12/22$1,397
This Air Canada deal was found by Cheapflights users on 12/22. 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 1/1111:10 amLHR - SJU
2 stops29h 46mAir Canada
Deal found 12/22$1,433
This Icelandair deal was found by Cheapflights users on 12/22. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2911:45 amSJU - LHR
2 stops19h 05mMultiple Airlines
Sat 1/1112:15 pmLHR - SJU
2 stops19h 10mMultiple Airlines
Deal found 12/22$1,444
This Iberia deal was found by Cheapflights users on 12/22. 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.
Mon 12/232:25 pmSJU - LHR
1 stop15h 15mIberia
Mon 12/3011:25 amLHR - SJU
1 stop12h 20mIberia
Deal found 12/22$1,612
This United Airlines deal was found by Cheapflights users on 12/22. 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 12/22$1,712
This Avianca deal was found by Cheapflights users on 12/22. 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.
Tue 12/316:05 pmSJU - LHR
1 stop16h 30mAvianca
Fri 1/39:40 pmLHR - SJU
1 stop18h 00mAvianca
Deal found 12/22$1,896
This Finnair deal was found by Cheapflights users on 12/22. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/262:25 pmSJU - LHR
1 stop15h 15mFinnair
Sat 1/412:35 pmLHR - SJU
1 stop15h 51mFinnair
Deal found 12/22$2,080
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/22. 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.
Tue 12/315:39 pmSJU - LHR
2 stops19h 51mTAP AIR PORTUGAL
Thu 1/212:25 pmLHR - SJU
2 stops19h 23mTAP AIR PORTUGAL
Deal found 12/22$2,379
This FlightHub deal was found by Cheapflights users on 12/22. 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 12/252:10 pmSJU - LHR
1 stop12h 45mLufthansa
Fri 1/38:00 amLHR - SJU
1 stop20h 36mLufthansa
Deal found 12/22$3,358
This Icelandair deal was found by Cheapflights users on 12/22. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:52 pmSJU - LHR
2 stops16h 58mIcelandair
Sat 1/412:15 pmLHR - SJU
2 stops19h 33mIcelandair
Deal found 12/22$4,443

Find flights from San Juan to Heathrow within your budget

Customize your flight search to find flights from San Juan to Heathrow 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 22, 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

$633

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/5

10:44 am-7:30 pm

2 stops28h 46m

London Heathrow

Tue 3/11

12:15 pm-9:51 am

2 stops25h 36m

$678

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/5

2:40 pm-9:40 am

1 stop15h 00m

London Heathrow

Wed 3/12

10:05 am-11:10 am

2 stops29h 05m

$702

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/5

6:29 pm-11:30 am

1 stop13h 01m

London Heathrow

Wed 3/12

6:30 am-10:50 pm

2 stops20h 20m

$718

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 2/9

6:20 pm-11:30 am

1 stop13h 10m

London Heathrow

Sun 2/16

7:20 am-7:45 pm

1 stop16h 25m

$724

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/5

7:30 am-6:50 am

2 stops19h 20m

London Heathrow

Wed 3/12

10:10 am-11:07 pm

2 stops16h 57m

$731

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/8

1:05 am-6:30 am

2 stops24h 25m

London Heathrow

Sat 5/17

9:30 am-11:57 pm

2 stops19h 27m

$924

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 3/4

3:26 am-5:55 am

1 stop22h 29m

London Heathrow

Wed 3/12

8:25 am-11:33 pm

1 stop19h 08m

$943

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 3/4

2:05 am-8:35 pm

1 stop14h 30m

London Heathrow

Tue 3/11

3:00 pm-9:22 pm

2 stops34h 22m

$1,036

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/22

1:35 pm-8:20 pm

2 stops25h 45m

London Heathrow

Sat 5/31

9:25 pm-12:32 am

2 stops32h 07m

$1,130

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 19 results
1
2

Best time to book a flight from San Juan to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Heathrow. Price data was last updated on December 20, 2024.

To ensure you get the cheapest price possible for a flight from San Juan to London Heathrow Airport, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from San Juan to London Heathrow Airport (average of $661). Flying from San Juan to London Heathrow Airport 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 LHR?

Find hourly flight availability from San Juan to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

One of the essential ways to save on airfare from San Juan to London Heathrow Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 11% on airfare.

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

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

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

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated December 22, 2024.
See what other customers who have flown with Air Canada, United Airlines and Avianca from San Juan to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

Delta
8.0
Very good
8,594 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
668 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

JetBlue
7.4
Good
3,265 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

United Airlines
7.4
Good
9,028 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

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 Heathrow. 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 Heathrow Airport round-trip?

    According to our current data, JetBlue ($633), Iberia ($702), and British Airways ($718) offers the cheapest pricing from San Juan to London Heathrow Airport. You may be able to fly from San Juan to London Heathrow Airport for 22% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $256 on JetBlue. Other airlines that offer cheap prices include Delta from $460 and United Airlines from $504 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Juan to Heathrow 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 Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from San Juan to London Heathrow Airport (average of $661). Flying from San Juan to London Heathrow Airport 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.

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Alternative routes for San Juan to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Heathrow flights

Top 7 airlines flying from San Juan to Heathrow

Discover the top 7 airlines that operate flights from San Juan to Heathrow. 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 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$549Average$775FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$582Average$829FlexibilityNo 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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