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Cheap flights from London Heathrow Airport to San Juan

LHR — SJU
26 Oct — 2 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Heathrow to San Juan

Popular in

December

Cheapest in

February

Average price

£675
Highest demand for flights based on searches. 1% potential increase in price (£10 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to San Juan

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 34 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan (average of £574). Flying from London Heathrow Airport to San Juan in August is currently the most expensive (average of £1,004). 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 San Juan

Read reviews from past customers who have flown with JetBlue,Iberia, andIcelandair from London Heathrow Airport to San Juan. 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.
JetBlue
7.1
Good
3,041 reviews
Check prices

Crew

7.9

Food

6.6

Overall

7.1

Entertainment

7.2

Boarding

7.3

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2024

BDL - SJU

My experience was very positive: I liked the big space among seats, the huge entertainment options, and the crew professionalism. My only complaint is the lacked of use of Spanish. As a Spanish speaker, I didn’t like this.
JetBlue
7.1
Good
3,041 reviews
JetBlue
7.1
Good
3,041 reviews
Check prices

Crew

7.9

Food

6.6

Overall

7.1

Entertainment

7.2

Boarding

7.3

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2024

BDL - SJU

My experience was very positive: I liked the big space among seats, the huge entertainment options, and the crew professionalism. My only complaint is the lacked of use of Spanish. As a Spanish speaker, I didn’t like this.
Iberia
7.0
Good
3,246 reviews
JetBlue
7.1
Good
3,041 reviews
Check prices

Crew

7.9

Food

6.6

Overall

7.1

Entertainment

7.2

Boarding

7.3

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2024

BDL - SJU

My experience was very positive: I liked the big space among seats, the huge entertainment options, and the crew professionalism. My only complaint is the lacked of use of Spanish. As a Spanish speaker, I didn’t like this.
Icelandair
6.9
Okay
752 reviews
JetBlue
7.1
Good
3,041 reviews
Check prices

Crew

7.9

Food

6.6

Overall

7.1

Entertainment

7.2

Boarding

7.3

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2024

BDL - SJU

My experience was very positive: I liked the big space among seats, the huge entertainment options, and the crew professionalism. My only complaint is the lacked of use of Spanish. As a Spanish speaker, I didn’t like this.
British Airways
6.7
Okay
8,237 reviews
JetBlue
7.1
Good
3,041 reviews
Check prices

Crew

7.9

Food

6.6

Overall

7.1

Entertainment

7.2

Boarding

7.3

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2024

BDL - SJU

My experience was very positive: I liked the big space among seats, the huge entertainment options, and the crew professionalism. My only complaint is the lacked of use of Spanish. As a Spanish speaker, I didn’t like this.

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 JetBlue. Our recent data shows that you can find tickets from as low as £429 on this airline. Additional options worth looking into are Icelandair and Iberia, starting at £491 and £856 round-trip. JetBlue is currently priced 42% below the average price you’ll pay for this route.

  • 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan (average of £574). Flying from London Heathrow Airport to San Juan in August is currently the most expensive (average of £1,004). 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

Top 4 airlines flying from Heathrow to San Juan

AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£429Average£661FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£491Average£862FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£856Average£1,040FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£856Average£1,090FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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

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

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