£175 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 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 £450 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is £1,079 and £1,016 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£175
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (16% 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 £464. On the other hand, the most expensive day to fly is Saturday, when return prices are £1,133 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.

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 499 reviews
8.0Crew
6.2Food
7.0Comfort
7.0Entertainment
7.1Boarding
Airline reviews

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

4.0 OkaySamuel, Jun 2025BWI - KEF
Read more Icelandair reviews

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

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

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

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

2/9Tue
1 stopUnited Airlines
13h 40mSJU-EDI
17/9Wed
1 stopUnited Airlines
15h 07mEDI-SJU
£453
2/9Tue
1 stopUnited Airlines
13h 45mSJU-EDI
16/9Tue
2 stopsUnited Airlines
30h 15mEDI-SJU
£456
6/9Sat
1 stopDelta
34h 20mSJU-EDI
19/9Fri
1 stopDelta
18h 08mEDI-SJU
£456
3/9Wed
2 stopsIberia
28h 44mSJU-EDI
17/9Wed
2 stopsIberia
17h 35mEDI-SJU
£470
2/9Tue
2 stopsDelta
22h 45mSJU-EDI
19/9Fri
2 stopsDelta
18h 42mEDI-SJU
£474
7/9Sun
2 stopsUnited Airlines
17h 25mSJU-EDI
18/9Thu
2 stopsUnited Airlines
19h 57mEDI-SJU
£477
6/8Wed
1 stopJetBlue
19h 25mSJU-LHR
27/1Tue
1 stopJetBlue
21h 12mLHR-SJU
£478
20/8Wed
1 stopJetBlue
19h 45mSJU-LGW
24/8Sun
1 stopJetBlue
18h 21mLGW-SJU
£479
5/8Tue
1 stopIberia
22h 21mSJU-LHR
27/1Tue
1 stopIberia
13h 30mLHR-SJU
£491
6/11Thu
2 stopsIcelandair
24h 40mSJU-LGW
19/11Wed
2 stopsIcelandair
17h 48mLGW-SJU
£772

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Recent one-way flight deals

3/10Fri
1 stop
27h 54mSJU-LGW
£175
3/10Fri
2 stops
40h 48mSJU-LGW
£180
23/8Sat
1 stopJetBlue
17h 30mSJU-LHR
£250
23/8Sat
1 stopJetBlue
13h 35mSJU-LGW
£250
31/10Fri
2 stopsAvianca
20h 25mSJU-LHR
£280
20/9Sat
2 stopsAir Canada
30h 50mSJU-LHR
£320
19/9Fri
2 stopsAir Canada
38h 55mSJU-LHR
£322
1/7Tue
1 stopAvianca
16h 20mSJU-LHR
£387
7/7Mon
2 stopsIcelandair
20h 40mSJU-LGW
£609
23/8Sat
2 stopsIcelandair
24h 40mSJU-LGW
£617

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Last minute flights to the United Kingdom

Last minute flight, train and bus deals

17/6Tue
multi-stop
26h 24mSJU-LGW
1/7Tue
multi-stop
16h 04mLGW-SJU
£809
17/6Tue
multi-stop
27h 09mSJU-LGW
1/7Tue
multi-stop
16h 04mLGW-SJU
£849
17/6Tue
multi-stop
26h 05mSJU-LGW
1/7Tue
multi-stop
16h 04mLGW-SJU
£878
17/6Tue
multi-stopJetBlue
12h 22mSJU-LHR
1/7Tue
multi-stopJetBlue
16h 50mLHR-SJU
£910
17/6Tue
multi-stopIberia
17h 40mSJU-LHR
8/7Tue
multi-stopIberia
28h 45mLHR-SJU
£962
17/6Tue
multi-stopIberia
16h 00mSJU-LHR
8/7Tue
multi-stopIberia
28h 45mLHR-SJU
£963
17/6Tue
multi-stopUnited Airlines
14h 35mSJU-LHR
1/7Tue
multi-stopUnited Airlines
20h 24mLHR-SJU
£971
17/6Tue
multi-stopJetBlue
12h 22mSJU-LHR
1/7Tue
multi-stopJetBlue
16h 50mLHR-SJU
£972
16/6Mon
multi-stopUnited Airlines
14h 35mSJU-LHR
8/7Tue
multi-stopUnited Airlines
16h 02mLHR-SJU
£974
17/6Tue
multi-stopDelta
12h 44mSJU-LHR
8/7Tue
multi-stopDelta
24h 06mLHR-SJU
£988

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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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