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Cheap flights from London Heathrow Airport to San Juan from £312

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
27 Oct — 3 Nov1
1 adult

The best prices from London Heathrow to San Juan are usually found in April or September, booked 76 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Heathrow to San Juan

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

Round-trip from

£475

One-way from

£312

Popular in

July

Cheapest in

April
Icelandair
  • Icelandair
  • 27/11-4/12
  • 2 total stops
  • 33h 08m total
  • London to San Juan
Search Deals
10/1
  • 10/1
  • 2 total stops
  • 46h 02m total
  • London to San Juan
Search Deals
High demand for flights, 25% potential price rise
Search Deals
Best time to find cheap flights, 22% potential price drop
Search Deals

Find flight deals from Heathrow to San Juan

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

Thu 7/1107:25LHR - SJU
1 stop22h 02mIcelandair
Thu 14/1104:10SJU - LHR
1 stop12h 35mIcelandair
Deal found 21/10£476
Mon 9/1212:20LHR - SJU
1 stop18h 21mJetBlue
Mon 16/1207:00SJU - LHR
1 stop18h 55mJetBlue
Deal found 21/10£482
Mon 28/1008:40LHR - SJU
1 stop34h 05mFinnair
Fri 8/1114:44SJU - LHR
2 stops15h 41mFinnair
Deal found 21/10£560
Wed 13/1118:30LHR - SJU
2 stops33h 13mTAP AIR PORTUGAL
Sat 16/1108:00SJU - LHR
2 stops24h 40mTAP AIR PORTUGAL
Deal found 21/10£663
Fri 8/1106:30LHR - SJU
2 stops22h 57mMultiple Airlines
Thu 14/1104:10SJU - LHR
2 stops23h 35mMultiple Airlines
Deal found 21/10£668
Fri 13/1211:25LHR - SJU
1 stop12h 20mIberia
Sat 21/1207:05SJU - LHR
1 stop22h 35mIberia
Deal found 21/10£752
Wed 4/1216:00LHR - SJU
2 stops25h 17mLufthansa
Sun 8/1219:35SJU - LHR
1 stop30h 20mLufthansa
Deal found 21/10£875
Tue 19/1106:50LHR - SJU
2 stops34h 27mUnited Airlines
Tue 26/1114:10SJU - LHR
1 stop12h 45mUnited Airlines
Deal found 21/10£884
Tue 31/1212:35LHR - SJU
1 stop15h 51mBritish Airways
Tue 14/116:35SJU - LHR
1 stop13h 05mBritish Airways
Deal found 21/10£912
Wed 4/1212:30LHR - SJU
1 stop14h 52mDelta
Wed 11/1208:00SJU - LHR
2 stops18h 25mDelta
Deal found 21/10£916
Mon 11/1118:00LHR - SJU
2 stops34h 36mAir Canada
Sun 17/1102:05SJU - LHR
2 stops25h 05mAir Canada
Deal found 21/10£917
Mon 4/1110:10LHR - SJU
2 stops17h 09mAir France
Mon 11/1115:41SJU - LHR
1 stop14h 54mAir France
Deal found 21/10£922

Find flights from Heathrow to San Juan within your budget

Customise your flight search to find flights from Heathrow to San Juan 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 1,032,068 searches. Data last updated 22 October 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£475 - £638

Route

Depart

Return

Price

London HeathrowSan Juan Luis Munoz Marin Intl

LHR - SJU

LHRSJU

London Heathrow

Wed 27/11

1 stop18h 28m

San Juan Luis Munoz Marin Intl

Wed 4/12

1 stop14h 40m

£475

London HeathrowSan Juan Luis Munoz Marin Intl

LHR - SJU

LHRSJU

London Heathrow

Mon 9/12

1 stop18h 21m

San Juan Luis Munoz Marin Intl

Mon 16/12

1 stop18h 55m

£482

London HeathrowSan Juan Luis Munoz Marin Intl

LHR - SJU

LHRSJU

London Heathrow

Wed 1/1

1 stop12h 20m

San Juan Luis Munoz Marin Intl

Tue 14/1

2 stops15h 55m

£493

London HeathrowSan Juan Luis Munoz Marin Intl

LHR - SJU

LHRSJU

London Heathrow

Sat 11/1

2 stops25h 14m

San Juan Luis Munoz Marin Intl

Sat 18/1

2 stops37h 30m

£606

London HeathrowSan Juan Luis Munoz Marin Intl

LHR - SJU

LHRSJU

London Heathrow

Thu 30/1

3 stops44h 52m

San Juan Luis Munoz Marin Intl

Mon 3/2

3 stops33h 20m

£638

Flights are sorted by cheapest first

Deals found on 20/10

Best time to book a flight from Heathrow to San Juan

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

Travel insights for flights from Heathrow to San Juan

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

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

Use this chart to determine the optimal time to book a return flight from Heathrow to San Juan. Price data was last updated on 18 October 2024.

The best time to book flights from London Heathrow Airport to San Juan is 76 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.

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

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan (average of £631). Flying from London Heathrow Airport to San Juan in July is currently the most expensive (average of £894). 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 LHR to SJU?

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

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to San Juan in the morning. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the evening.

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

Use this chart to determine the cheapest time to fly return from Heathrow to San Juan. Price data was last updated on 20 October 2024.

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

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Rainfall in San Juan by month

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

In terms of precipitation, rainfall in San Juan ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan when rainfall is around 55.0 mm.

Temperature in San Juan by month

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

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated 22 October 2024.
Peruse reviews from past customers who have flown with Icelandair, JetBlue and Finnair from London to San Juan to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Finnair
7.7
Good
1,321 reviews
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

JetBlue
7.5
Good
3,556 reviews
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Turkish Airlines
7.4
Good
3,866 reviews
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Icelandair
7.3
Good
602 reviews
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Aer Lingus
7.1
Good
1,090 reviews
Finnair
7.7
Good
1,321 reviews
Check prices

Overall

7.7

Comfort

7.5

Food

6.8

Crew

8.2

Entertainment

6.9

Boarding

7.8

Reviews

1 / 10

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Related info for your journey

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

  • Can I find flights from London Heathrow Airport to San Juan for under £500 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to San Juan for under £500. The cheapest flight booked recently is on Icelandair for just £475, but on average you can expect to pay £539.

  • Are there last-minute flights available from London Heathrow Airport to San Juan for under £600?

    There are currently 8+ open flights from London Heathrow Airport to San Juan within the next 7 days for less than £600.

  • What are the cheapest airlines flying from London Heathrow Airport to San Juan round-trip?

    Our cheapest airline available from London Heathrow Airport to San Juan is Icelandair. Our recent data shows that you can find tickets from as low as £475 on this airline. Additional options worth looking into are JetBlue and Finnair, starting at £482 and £493 round-trip. Icelandair is currently priced 24% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £601. However, be on the lookout for offers from TAP AIR PORTUGAL and Avianca, as they are both options that can get you from London Heathrow Airport to San Juan for a low price.

  • What does LHR to SJU mean?

    LHR and SJU are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LHR to SJU refers to a flight route from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport. Ponce Mercedita Airport (PSE), San Juan Isla Grande Airport (SIG), Vieques Airport (VQS), Culebra Airport (CPX), Ceiba J. Aponte de la Torre Airport (NRR) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Heathrow to San Juan that include extra baggage allowance?

    The amount of baggage you can bring on your Heathrow to San Juan flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Heathrow to San Juan with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow to San Juan flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from Heathrow to San Juan that allow pets onboard?

    Many airlines flying from Heathrow to San Juan offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Heathrow to San Juan?

    Yes, you can often find last-minute deals on Heathrow to San Juan flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London Heathrow Airport to San Juan flight deals updated?

    The London Heathrow Airport to San Juan flight deals you see on this page were last updated on 21/10.

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

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan (average of £631). Flying from London Heathrow Airport to San Juan in July is currently the most expensive (average of £894). 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

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

Top 8 airlines flying from Heathrow to San Juan

Discover the top 8 airlines that operate flights from Heathrow to San Juan. 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 1,032,068 searches. Data last updated 22 October 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£399Average£754FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£402Average£640FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£439Average£559FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£462Average£743FlexibilityNo cancel feeOn-time77%
Search Iberia flights
IcelandairCheapest£471Average£540FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£513Average£867FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£514Average£969FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£578Average£794FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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 Heathrow to San Juan?

Cheapflights helps you search for flights from Heathrow to San Juan via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Juan?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to San Juan by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to San Juan with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to San Juan flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to San Juan become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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