Cheap flights from London to Puerto Rico Island

View AU$1,121 flight on Thu, 9 Oct. 2025Opens in a new window

Popular airlines from London to Puerto Rico Island

  • Iberia

    Iberia

  • Lufthansa

    Lufthansa

  • United

    United

  • Icelandair

    Icelandair

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from London (LON) to Puerto Rico Island (SJU)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Wed, 21 Jan. - Sun, 8 Feb.
LHR
London
SJU
San Juan
AU$1,287 Return, found 3 days ago
AU$1,287
Return
found 3 days ago
Select avianca flight, departing Wed, 21 Jan. from London to San Juan, returning Sun, 8 Feb., priced at AU$1,287 found 3 days ago
Icelandair
Wed, 7 Jan. - Wed, 14 Jan.
LGW
London
SJU
San Juan
AU$1,460 Return, found 3 days ago
AU$1,460
Return
found 3 days ago
Select Icelandair flight, departing Wed, 7 Jan. from London to San Juan, returning Wed, 14 Jan., priced at AU$1,460 found 3 days ago
United
Thu, 9 Oct. - Sun, 19 Oct.
LHR
London
SJU
San Juan
AU$1,692 Return, found 1 day ago
AU$1,692
Return
found 1 day ago
Select United flight, departing Thu, 9 Oct. from London to San Juan, returning Sun, 19 Oct., priced at AU$1,692 found 1 day ago
Virgin Atlantic
Wed, 7 Jan. - Wed, 14 Jan.
LHR
London
SJU
San Juan
AU$1,706 Return, found 3 days ago
AU$1,706
Return
found 3 days ago
Select Virgin Atlantic flight, departing Wed, 7 Jan. from London to San Juan, returning Wed, 14 Jan., priced at AU$1,706 found 3 days ago
American Airlines
Wed, 7 Jan. - Wed, 14 Jan.
LHR
London
SJU
San Juan
AU$1,706 Return, found 3 days ago
AU$1,706
Return
found 3 days ago
Select American Airlines flight, departing Wed, 7 Jan. from London to San Juan, returning Wed, 14 Jan., priced at AU$1,706 found 3 days ago
Delta
Wed, 7 Jan. - Wed, 14 Jan.
LHR
London
SJU
San Juan
AU$1,714 Return, found 3 days ago
AU$1,714
Return
found 3 days ago
Select Delta flight, departing Wed, 7 Jan. from London to San Juan, returning Wed, 14 Jan., priced at AU$1,714 found 3 days ago

Find the cheapest month to fly from London (LON) to San Juan (SJU)

September is typically the cheapest month to fly

From AU$849 - AU$1,678 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.