£156 Find Cheap Flights from Puerto Rico to the United Kingdom

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1 adult, Economy

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Useful Info

What is the cheapest month to fly from Puerto Rico to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Puerto Rico to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Puerto Rico to the United Kingdom is October, when tickets cost £448 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is £1,074 and £1,012 respectively.

How far in advance should I book a flight from Puerto Rico to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Puerto Rico to the United Kingdom, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.


Good to know - Cheap tickets from Puerto Rico to the United Kingdom

Low seasonMarch
High seasonJuly
Cheapest flight£156
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (15% more expensive on average)
Flight from San Juan to London Gatwick Airport

FAQs for booking flights from Puerto Rico to the United Kingdom

  • How does KAYAK find such low prices on flights from Puerto Rico to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Puerto Rico to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Puerto Rico to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Puerto Rico to the United Kingdom is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Puerto Rico to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Puerto Rico to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Puerto Rico to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Puerto Rico to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Tuesday when return tickets can be as cheap as £462. On the other hand, the most expensive day to fly is Saturday, when return prices are £1,128 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the evening, when round-trip flights cost £661 on average. Morning departures are around 73% more expensive than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the morning, which is peak travel time and where the average cost of a ticket is £1,144.

Book cheap flights from Puerto Rico to the United Kingdom

Cheapest flights to the United Kingdom from Puerto Rico found in 2025

Recent return flight deals

25/8Mon
1 stopIberia
22h 25mSJU-LHR
8/9Mon
1 stopIberia
27h 30mLHR-SJU
£405
25/8Mon
1 stopKLM
15h 26mSJU-LGW
8/9Mon
1 stopKLM
16h 51mLGW-SJU
£422
2/9Tue
1 stopAir France
16h 26mSJU-LHR
12/9Fri
1 stopAir France
17h 52mLHR-SJU
£425
28/10Tue
2 stopsAmerican Airlines
17h 15mSJU-MAN
13/11Thu
2 stopsAmerican Airlines
19h 21mMAN-SJU
£432
24/8Sun
1 stopDelta
22h 00mSJU-LGW
7/9Sun
1 stopDelta
16h 51mLGW-SJU
£434
29/10Wed
2 stopsAmerican Airlines
17h 30mSJU-GLA
7/11Fri
2 stopsAmerican Airlines
20h 56mGLA-SJU
£437
12/11Wed
1 stopVirgin Atlantic
14h 05mSJU-MAN
16/11Sun
1 stopVirgin Atlantic
18h 17mMAN-SJU
£451
12/11Wed
1 stopDelta
14h 05mSJU-MAN
16/11Sun
2 stopsDelta
18h 50mMAN-SJU
£458
12/11Wed
2 stopsVirgin Atlantic
17h 35mSJU-MAN
16/11Sun
1 stopVirgin Atlantic
18h 17mMAN-SJU
£465
24/8Sun
1 stopAir France
15h 26mSJU-LGW
7/9Sun
1 stopAir France
16h 51mLGW-SJU
£517

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Recent one-way flight deals

10/7Thu
1 stop
36h 24mSJU-LGW
£156
24/7Thu
1 stop
19h 20mSJU-LGW
£166
2/11Sun
1 stopVirgin Atlantic
18h 35mSJU-MAN
£248
23/11Sun
1 stopVirgin Atlantic
20h 10mSJU-MAN
£249
22/8Fri
1 stopJetBlue
12h 40mSJU-LHR
£255
22/8Fri
1 stopJetBlue
12h 40mSJU-LHR
£257
18/8Mon
2 stopsBritish Airways
20h 20mSJU-MAN
£273
2/11Sun
2 stopsAir France
20h 27mSJU-MAN
£279
18/8Mon
1 stopBritish Airways
17h 15mSJU-MAN
£361
4/8Mon
2 stopsAir France
18h 00mSJU-BHX
£708

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Last minute flights to the United Kingdom

Last minute flight, train and bus deals

6/7Sun
multi-stopJetBlue
19h 30mSJU-LHR
18/7Fri
multi-stopJetBlue
14h 19mLHR-SJU
£613
6/7Sun
multi-stopJetBlue
15h 40mSJU-LGW
18/7Fri
multi-stopJetBlue
17h 39mLGW-SJU
£654
5/7Sat
multi-stopJetBlue
12h 40mSJU-LHR
18/7Fri
multi-stopJetBlue
14h 19mLHR-SJU
£671
8/7Tue
multi-stopAir Canada
24h 20mSJU-LHR
25/7Fri
multi-stopAir Canada
19h 32mLHR-SJU
£969
8/7Tue
multi-stopAir Canada
24h 20mSJU-LHR
25/7Fri
multi-stopAir Canada
19h 32mLHR-SJU
£1,053
8/7Tue
multi-stopAvianca
18h 10mSJU-LHR
15/7Tue
multi-stopAvianca
23h 45mLHR-SJU
£1,155
8/7Tue
multi-stopTurkish Airlines
21h 25mSJU-LGW
15/7Tue
multi-stopTurkish Airlines
24h 35mLGW-SJU
£1,181
8/7Tue
multi-stopTurkish Airlines
21h 50mSJU-LHR
15/7Tue
multi-stopTurkish Airlines
25h 10mLHR-SJU
£1,213
7/7Mon
multi-stop
24h 05mSJU-EDI
9/7Wed
multi-stop
41h 15mEDI-SJU
£1,243
6/7Sun
multi-stop
39h 58mSJU-EDI
9/7Wed
multi-stop
41h 15mEDI-SJU
£1,271

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Everything you need to know for your flight to the United Kingdom

Cabin class types available on flights to the United Kingdom

Cabin classes available on flights to the United Kingdom. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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