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 Finnair. Our recent data shows that you can find tickets from as low as £503 on this airline. Additional options worth looking into are JetBlue and Icelandair, starting at £525 and £627 round-trip. Finnair is currently priced 25% 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 Iberia, with whom users have recently found tickets for as low as £510. However, be on the lookout for offers from JetBlue and Avianca, as they are both options that can get you from London Heathrow Airport to San Juan for a low price.

What are the most popular airlines that fly from London Heathrow Airport to San Juan?

Finnair, JetBlue and British Airways are the most popular airlines when flying from London Heathrow Airport to San Juan.

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

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Juan. Check prices with Cheapflights to find a great deal for your trip.

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

To save on the cost of your flight from London Heathrow Airport to San Juan, book at least 57 days before your planned departure. Booking around this time can save you about 49% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £471 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £754.

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

Our data shows that January tends to be the cheapest month to fly to San Juan from London Heathrow Airport. Users have commonly found prices around £683 for the month, but tickets can be as low as £467. Due to multiple factors, prepare for potentially higher prices in August.

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.

£359+ Flights from London Heathrow Airport to San Juan

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

Cheap flight deals from Heathrow to San Juan

Round-trip from	£503
One-way from	£359
Popular in	August
Cheapest in	September
Average price	£589

Finnair
28/4-2/5
3 total stops
32h 11m total
London to San Juan

Search Deals

25/2
2 total stops
41h 54m total
London to San Juan

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£77 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

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 21 February 2025.

Sat 1/319:50LHR - SJU

1 stop19h 01mMultiple Airlines

Tue 4/322:31SJU - LHR

1 stop17h 29mMultiple Airlines

Deal found 20/2£506

Thu 20/307:25LHR - SJU

1 stop17h 25mJetBlue

Thu 27/304:00SJU - LHR

1 stop12h 45mJetBlue

Deal found 19/2£525

Thu 13/306:15LHR - SJU

1 stop17h 30mFinnair

Sun 23/315:30SJU - LHR

1 stop16h 50mFinnair

Deal found 20/2£541

Thu 6/1108:25LHR - SJU

1 stop23h 55mIcelandair

Fri 14/1101:59SJU - LHR

1 stop14h 46mIcelandair

Deal found 20/2£606

Thu 6/1112:25LHR - SJU

2 stops19h 55mTAP AIR PORTUGAL

Sat 15/1106:15SJU - LHR

2 stops25h 10mTAP AIR PORTUGAL

Deal found 20/2£669

Sat 16/811:30LHR - SJU

1 stop12h 00mIberia

Sun 24/814:05SJU - LHR

1 stop14h 20mIberia

Deal found 20/2£813

Thu 20/307:30LHR - SJU

2 stops20h 06mLufthansa

Mon 24/313:10SJU - LHR

1 stop16h 00mLufthansa

Deal found 20/2£815

Sat 1/306:30LHR - SJU

2 stops19h 52mUnited Airlines

Fri 7/302:05SJU - LHR

1 stop14h 30mUnited Airlines

Deal found 20/2£828

Wed 5/311:25LHR - SJU

1 stop12h 20mAmerican Airlines

Sun 9/315:24SJU - LHR

1 stop16h 36mAmerican Airlines

Deal found 20/2£844

Best flights from Heathrow to San Juan
Discover carefully curated flight deals from Heathrow to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Mon 28/406:15LHR - SJU

1 stop17h 35mFinnair

Fri 2/513:29SJU - LHR

2 stops14h 36mFinnair

Deal found 21/2£503

Sat 8/319:50LHR - SJU

1 stop18h 01mMultiple Airlines

Tue 11/309:44SJU - LHR

1 stop16h 46mMultiple Airlines

Deal found 20/2£521

Thu 20/307:25LHR - SJU

1 stop17h 25mJetBlue

Thu 27/304:00SJU - LHR

1 stop12h 45mJetBlue

Deal found 19/2£525

Tue 1/411:55LHR - SJU

1 stop14h 02mIcelandair

Mon 7/400:55SJU - LHR

1 stop14h 50mIcelandair

Deal found 20/2£627

Mon 3/313:40LHR - SJU

2 stops29h 17mTAP AIR PORTUGAL

Tue 11/315:25SJU - LHR

2 stops22h 05mTAP AIR PORTUGAL

Deal found 20/2£702

Sat 16/811:30LHR - SJU

1 stop12h 00mIberia

Sun 24/814:05SJU - LHR

1 stop14h 20mIberia

Deal found 20/2£813

Thu 20/307:30LHR - SJU

2 stops20h 06mLufthansa

Mon 24/313:10SJU - LHR

1 stop16h 00mLufthansa

Deal found 20/2£815

Sun 27/409:30LHR - SJU

2 stops16h 54mUnited Airlines

Sun 4/507:25SJU - LHR

2 stops17h 55mUnited Airlines

Deal found 20/2£829

Mon 3/313:10LHR - SJU

1 stop14h 44mAmerican Airlines

Sun 9/312:15SJU - LHR

1 stop19h 45mAmerican Airlines

Deal found 20/2£865

Fri 7/316:35LHR - SJU

2 stops25h 56mDelta

Sun 9/317:55SJU - LHR

1 stop22h 15mDelta

Deal found 20/2£900

Fri 4/409:50LHR - SJU

2 stops16h 38mAer Lingus

Sun 13/405:05SJU - LHR

2 stops21h 55mAer Lingus

Deal found 20/2£959

Sun 9/321:40LHR - SJU

1 stop23h 00mAvianca

Thu 13/318:05SJU - LHR

1 stop16h 30mAvianca

Deal found 21/2£993

Last-minute flights from Heathrow to San Juan
Discover last-minute flight deals from Heathrow to San Juan. Data last updated 21 February 2025 and is based on user searches.

Fri 21/221:40LHR - SJU

1 stop23h 00mAvianca

Sat 8/318:05SJU - LHR

1 stop16h 30mAvianca

Deal found 20/2£990

Wed 26/210:10LHR - SJU

1 stop17h 49mAir France

Sun 9/313:16SJU - LHR

1 stop14h 39mAir France

Deal found 20/2£1,290

Thu 27/210:05LHR - SJU

1 stop13h 40mIberia

Tue 11/321:20SJU - LHR

1 stop15h 55mIberia

Deal found 20/2£842

Fri 28/206:00LHR - SJU

2 stops22h 56mTAP AIR PORTUGAL

Tue 4/316:12SJU - LHR

2 stops26h 28mTAP AIR PORTUGAL

Deal found 20/2£702

Fri 28/216:35LHR - SJU

2 stops25h 56mDelta

Sun 9/317:55SJU - LHR

1 stop22h 15mDelta

Deal found 20/2£900

Fri 28/206:00LHR - SJU

2 stops22h 56mTAP AIR PORTUGAL

Tue 11/315:25SJU - LHR

2 stops26h 10mTAP AIR PORTUGAL

Deal found 20/2£702

Fri 28/220:05LHR - SJU

2 stops22h 26mDelta

Fri 7/318:10SJU - LHR

1 stop22h 00mDelta

Deal found 20/2£930

Sat 1/319:50LHR - SJU

1 stop19h 01mMultiple Airlines

Tue 4/322:31SJU - LHR

1 stop17h 29mMultiple Airlines

Deal found 20/2£506

Sat 1/306:30LHR - SJU

2 stops19h 52mUnited Airlines

Fri 7/302:05SJU - LHR

1 stop14h 30mUnited Airlines

Deal found 20/2£828

Sun 2/318:00LHR - SJU

2 stops34h 36mAir Canada

Sat 8/303:05SJU - LHR

2 stops24h 05mAir Canada

Deal found 19/2£1,032

Sun 2/312:05LHR - SJU

1 stop16h 31mLufthansa

Thu 6/314:10SJU - LHR

1 stop12h 45mLufthansa

Deal found 20/2£1,626

Mon 3/312:20LHR - SJU

1 stop15h 30mJetBlue

Tue 11/321:45SJU - LHR

1 stop19h 00mJetBlue

Deal found 20/2£569

One-way flights from Heathrow to San Juan
Search for one-way flight options from Heathrow to San Juan. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Tue 25/220:50LHR - SJU

2 stops41h 54mMultiple Airlines

Deal found 20/2£359

Sun 23/306:20LHR - SJU

1 stop17h 25mIberia

Deal found 20/2£510

Tue 6/508:15LHR - SJU

1 stop15h 51mJetBlue

Deal found 20/2£545

Tue 25/221:40LHR - SJU

1 stop23h 00mAvianca

Deal found 20/2£574

Tue 6/506:00LHR - SJU

2 stops35h 04mTAP AIR PORTUGAL

Deal found 20/2£643

Fri 11/412:55LHR - SJU

1 stop15h 34mVirgin Atlantic

Deal found 20/2£1,342

Thu 3/413:05LHR - SJU

2 stops18h 41mIcelandair

Deal found 20/2£1,966

Thu 20/308:30LHR - SJU

2 stops19h 06mLufthansa

Deal found 20/2£5,722

Thu 20/311:45LHR - SJU

1 stop15h 55mFinnair

Deal found 20/2£9,459

Find flights from Heathrow to San Juan within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 1/3

19:50-10:51

1 stop19h 01m

San Juan Luis Munoz Marin Intl

Tue 4/3

22:31-20:00

1 stop17h 29m

£506

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 20/3

07:25-20:50

1 stop17h 25m

San Juan Luis Munoz Marin Intl

Thu 27/3

04:00-20:45

1 stop12h 45m

£525

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 13/3

06:15-19:45

1 stop17h 30m

San Juan Luis Munoz Marin Intl

Sun 23/3

15:30-12:20

1 stop16h 50m

£541

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 1/4

11:55-20:57

1 stop14h 02m

San Juan Luis Munoz Marin Intl

Mon 7/4

00:55-20:45

1 stop14h 50m

£627

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 28/2

06:00-00:56

2 stops22h 56m

San Juan Luis Munoz Marin Intl

Tue 11/3

15:25-21:35

2 stops26h 10m

£702

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 20/3

07:30-23:36

2 stops20h 06m

San Juan Luis Munoz Marin Intl

Mon 24/3

13:10-09:10

1 stop16h 00m

£815

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 1/3

06:30-22:22

2 stops19h 52m

San Juan Luis Munoz Marin Intl

Fri 7/3

02:05-20:35

1 stop14h 30m

£828

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 27/2

10:05-19:45

1 stop13h 40m

San Juan Luis Munoz Marin Intl

Tue 11/3

21:20-17:15

1 stop15h 55m

£842

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 5/3

11:25-19:45

1 stop12h 20m

San Juan Luis Munoz Marin Intl

Sun 9/3

15:24-12:00

1 stop16h 36m

£844

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 28/2

16:35-14:31

2 stops25h 56m

San Juan Luis Munoz Marin Intl

Sun 9/3

17:55-20:10

1 stop22h 15m

£900

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 21 results

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?

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.

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 £1,027). 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?

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 22% 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?

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.

Rainfall in San Juan 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

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

Peruse reviews from past customers who have flown with Delta, Finnair and Virgin Atlantic 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.

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Delta

8.0

Very Good

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

JetBlue

7.4

Good

3,069 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

United Airlines

7.4

Good

8,759 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

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 Finnair. Our recent data shows that you can find tickets from as low as £503 on this airline. Additional options worth looking into are JetBlue and Icelandair, starting at £525 and £627 round-trip. Finnair is currently priced 25% 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 Iberia, with whom users have recently found tickets for as low as £510. However, be on the lookout for offers from JetBlue and Avianca, as they are both options that can get you from London Heathrow Airport to San Juan for a low price.
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.
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 £1,027). 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

Alternative routes for Heathrow to San Juan

Heathrow to Luis Munoz Marin Intl flights

Gatwick to Luis Munoz Marin Intl flights

London City to Luis Munoz Marin Intl flights

Stansted to Luis Munoz Marin Intl flights

Heathrow to Aguadilla flights

Complete your trip

San Juan car hire

San Juan Luis Munoz Marin Intl Airport car hire

Ponce Mercedita Airport car hire

San Juan Isla Grande Airport car hire

Vieques Airport car hire

Condado car hire

Santurce car hire

Hato Rey Sur car hire

San Juan Antiguo car hire

Hato Rey Norte car hire

Gobernador Piñero car hire

Hato Rey Central car hire

Top 6 airlines flying from Heathrow to San Juan

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£451	Average£594	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Icelandair	Cheapest£475	Average£574	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£493	Average£673	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Iberia	Cheapest£534	Average£711	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£596	Average£773	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£927	Average£1,082	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to San Juan from £359

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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from Heathrow to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to San Juan

Cheapest flights from Heathrow to San JuanExplore 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 21 February 2025.

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 21 February 2025.

Find flights from Heathrow to San Juan within your budget

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.

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 14 February 2025.

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

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 21 February 2025.

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 16 December 2024.

Rainfall in San Juan by month

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

Temperature in San Juan by month

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

Reviews of airlines servicing San Juan

Peruse reviews from past customers who have flown with Delta, Finnair and Virgin Atlantic 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.

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.

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

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

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

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

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

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

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.

Alternative routes for Heathrow to San Juan

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

Top 6 airlines flying from Heathrow to San Juan

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?

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

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

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

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Travel Smart

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 21 February 2025.