Cheap flights from London Heathrow Airport to Puerto Rico from £352
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Puerto Rico departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from London Heathrow Airport to Puerto Rico
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Puerto Rico?
In general, September is the cheapest month to fly from London Heathrow Airport to Puerto Rico. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £486. If you don’t want to visit Puerto Rico in September, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £548.
What is the cheapest day to depart on your flight to Puerto Rico?
According to our data, Monday is the cheapest day to fly to Puerto Rico from London Heathrow Airport. The lowest ticket price found for a Monday departure recently was £472. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Puerto Rico is Friday, with ticket prices averaging around £631.
What is the cheapest time of day to depart on your flight to Puerto Rico?
Flying to Puerto Rico from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £558 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £713 on average. Flights to Puerto Rico from London Heathrow Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to Puerto Rico?
You are more likely to see cheaper flights to Puerto Rico from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around £635 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from London Heathrow Airport for as low as £501 on momondo.
What is the cheapest airline that flies from London Heathrow to Puerto Rico?
Icelandair, Avianca, and JetBlue are the most popular carriers operating from London Heathrow to Puerto Rico
Which airlines fly to Puerto Rico?
Finnair, Iberia and Icelandair are the top three most popular airlines that fly to Puerto Rico from London Heathrow Airport according to our data. Finnair is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Puerto Rico. Keep in mind that there are 6 different airlines that fly to Puerto Rico on a routine basis, so you have a few additional options to choose from.
Cheap London Heathrow Airport to Puerto Rico flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Puerto Rico
When did momondo last update prices for flights from London Heathrow Airport to Puerto Rico?
Prices for flights from London Heathrow Airport to Puerto Rico are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Puerto Rico?
As of July 2025, there are 6 operators available to choose from for flights from London Heathrow Airport to Puerto Rico.
How old do you have to be to fly from London Heathrow Airport to Puerto Rico?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Puerto Rico.
What documentation or ID do you need to fly to Puerto Rico?
The required travel and health documents for your Puerto Rico trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Puerto Rico. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from London Heathrow Airport to Puerto Rico
Compare and see reviews for airlines that fly from London Heathrow Airport to Puerto Rico with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £353 | Free Cancellation | Rating 7.4 654 reviews | |||
| PriceFrom £406 | Free Cancellation | Rating 7.3 2,916 reviews | |||
| PriceFrom £410 | Free Cancellation | Rating 7.6 1,306 reviews | |||
| PriceFrom £444 | Free Cancellation | Rating 7.0 514 reviews | |||
| PriceFrom £504 | Free Cancellation | Rating 7.0 2,820 reviews | |||
| PriceFrom £530 | Free Cancellation | Rating 6.6 7,093 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Puerto Rico?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Puerto Rico. momondo saves you time and could save you money on your trip.
Can I find flights from London to Puerto Rico with flexible booking policies on momondo?
All flight searches from London to Puerto Rico on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Puerto Rico?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Puerto Rico.
I’m not ready to book a flight from London to Puerto Rico right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Puerto Rico from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.