£232 Find Cheap Flights from Puerto Rico to the United Kingdom

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KAYAK's insights & trends for flights to the United Kingdom

Get data-powered insights and trends for flights to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from Puerto Rico to the United Kingdom clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to the United Kingdom is Tuesday when return tickets can be as cheap as £471. On the other hand, the most expensive day to fly is Saturday, when return prices are £1,152 on average.

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 March, when tickets cost £522 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is £811 and £701 respectively.

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

The average price for all round-trip flights from Puerto Rico to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
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.

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 season

March

High season

July

Cheapest flight

£232
Best time to beat the crowds (24% less expensive on average)
Most popular time to fly (18% 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.

Top airline flying from Puerto Rico to the United Kingdom

Need help choosing which airline to fly with from Puerto Rico to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IcelandairOverall score based on 487 reviews
8.0Crew
7.1Boarding
7.1Entertainment
6.3Food
7.0Comfort
Airline reviews

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

10.0 ExcellentJames, Apr 2025MAN - KEF
Read more Icelandair reviews

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

The flights were in time and the bags arrived. well done

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

Had a screaming child next to us. Not the airline’s fault but still annoying.

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

20/9Sat
1 stopJetBlue
12h 30mSJU-LHR
26/9Fri
1 stopJetBlue
18h 03mLHR-SJU
£483
1/10Wed
1 stopJetBlue
15h 00mSJU-EDI
10/10Fri
1 stopJetBlue
19h 15mEDI-SJU
£495
20/10Mon
2 stopsAmerican Airlines
19h 20mSJU-GLA
26/10Sun
2 stopsAmerican Airlines
17h 35mGLA-SJU
£508
3/9Wed
1 stopBritish Airways
13h 37mSJU-LHR
10/9Wed
1 stopBritish Airways
14h 15mLHR-SJU
£527
27/8Wed
1 stopKLM
15h 31mSJU-LHR
9/9Tue
2 stopsKLM
17h 13mLHR-SJU
£533
2/9Tue
1 stopKLM
14h 35mSJU-LHR
9/9Tue
2 stopsKLM
17h 47mLHR-SJU
£540
3/9Wed
1 stopAmerican Airlines
17h 25mSJU-LHR
10/9Wed
2 stopsAmerican Airlines
16h 20mLHR-SJU
£547
24/8Sun
1 stopBritish Airways
16h 00mSJU-LHR
7/9Sun
1 stopBritish Airways
17h 20mLHR-SJU
£548
27/8Wed
2 stopsIcelandair
23h 25mSJU-LGW
9/9Tue
2 stopsIcelandair
17h 45mLGW-SJU
£814
22/8Fri
2 stopsIcelandair
17h 35mSJU-LHR
5/9Fri
2 stopsIcelandair
17h 40mLHR-SJU
£846

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Recent one-way flight deals

4/7Fri
1 stop
27h 50mSJU-LGW
£232
12/10Sun
1 stopJetBlue
16h 15mSJU-EDI
£254
3/7Thu
1 stop
27h 50mSJU-LGW
£254
12/5Mon
2 stops
24h 25mSJU-LGW
£266
3/10Fri
1 stopIberia
14h 30mSJU-LHR
£328
23/8Sat
1 stopLufthansa
21h 00mSJU-LHR
£331
23/8Sat
1 stopLufthansa
21h 00mSJU-LHR
£332
12/10Sun
2 stopsVirgin Atlantic
17h 45mSJU-EDI
£337
15/6Sun
2 stopsIcelandair
22h 07mSJU-LHR
£543
20/5Tue
2 stopsIcelandair
21h 10mSJU-LGW
£634

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Last minute flights to the United Kingdom

Last minute flight, train and bus deals

2/5Fri
multi-stopJetBlue
19h 30mSJU-LHR
22/5Thu
multi-stopJetBlue
18h 54mLHR-SJU
£528
1/5Thu
multi-stopJetBlue
12h 16mSJU-LHR
22/5Thu
multi-stopJetBlue
18h 54mLHR-SJU
£550
2/5Fri
multi-stop
23h 40mSJU-LHR
4/5Sun
multi-stop
21h 27mLHR-SJU
£614
2/5Fri
multi-stop
23h 00mSJU-LGW
4/5Sun
multi-stop
23h 36mLGW-SJU
£655
30/4Wed
multi-stopDelta
15h 56mSJU-LHR
6/5Tue
multi-stopDelta
20h 08mLHR-SJU
£674
30/4Wed
multi-stopDelta
18h 10mSJU-LHR
6/5Tue
multi-stopDelta
22h 18mLHR-SJU
£678
1/5Thu
multi-stopUnited Airlines
14h 35mSJU-LHR
22/5Thu
multi-stopUnited Airlines
16h 42mLHR-SJU
£721
1/5Thu
multi-stopUnited Airlines
14h 35mSJU-LHR
4/5Sun
multi-stopUnited Airlines
22h 24mLHR-SJU
£746
1/5Thu
multi-stopAir Canada
24h 25mSJU-LHR
4/5Sun
multi-stopAir Canada
19h 27mLHR-SJU
£756
1/5Thu
multi-stopAir Canada
24h 25mSJU-LHR
22/5Thu
multi-stopAir Canada
19h 27mLHR-SJU
£868

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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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