What are the cheapest airlines to fly from Puerto Rico to London one-way?

The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as £301. However, be on the lookout for offers from JetBlue and Avianca, as they are both options that can get you from Puerto Rico to London for a low price.

What are the most popular routes from Puerto Rico to London?

When deciding which route to take from Puerto Rico to London consider San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City as they are the most popular.

How far in advance should I book a flight from Puerto Rico to London?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 45 days in advance, which can save you up to 24% on flights from Puerto Rico to London compared to booking the week you need them. Waiting 45 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £547. For sooner than that we have options available in the next 3 days from £547.

What is the cheapest month to fly from Puerto Rico to London?

The best pricing can be found in the month of September. Prices to London from Puerto Rico average £594. You can even find prices in September for less than £594, as users have found deals to London from as low as £440. The month of June appears to be one of the more expensive times to travel to London from Puerto Rico. Flying in the targeted month can save you up to 26%.

Can I find deals for flights from Puerto Rico to London that include hotel bookings?

Yes. In addition to deals on Puerto Rico to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Puerto Rico to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to London.

Can I find deals for business class flights from Puerto Rico to London?

Yes. Cheapflights offers flight deals from Puerto Rico to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£579+ Flights from Puerto Rico to London

Cheap flight deals from Puerto Rico to London

Round-trip from	£495
One-way from	£235
Popular in	June
Cheapest in	September
Average price	£529

Delta
21/10-18/11
3 total stops
30h 30m total
Puerto Rico to London

Search Deals

4/7
1 total stop
25h 35m total
Puerto Rico to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£82 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Puerto Rico to London

Cheapest flights from Puerto Rico to London
Explore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Wed 29/1017:40SJU - LHR

1 stop12h 35mDelta

Fri 7/1109:20LHR - SJU

1 stop17h 57mDelta

Deal found 29/4£492

Sat 15/1120:55SJU - LHR

1 stop19h 50mJetBlue

Thu 27/1108:25LHR - SJU

1 stop18h 35mJetBlue

Deal found 29/4£493

Sun 9/1107:25SJU - LGW

2 stops21h 35mAmerican Airlines

Thu 20/1111:20LGW - SJU

2 stops18h 50mAmerican Airlines

Deal found 29/4£503

Wed 3/915:58SJU - LHR

1 stop13h 37mBritish Airways

Wed 10/909:15LHR - SJU

1 stop14h 15mBritish Airways

Deal found 29/4£525

Wed 27/814:39SJU - LHR

1 stop15h 31mKLM

Tue 9/909:55LHR - SJU

2 stops17h 13mKLM

Deal found 29/4£531

Sat 19/707:00SJU - LGW

1 stop22h 00mDelta

Tue 19/812:00LGW - SJU

1 stop16h 46mDelta

Deal found 29/4£532

Sun 24/812:43SJU - LGW

1 stop16h 17mAir France

Sun 7/912:00LGW - SJU

1 stop16h 46mAir France

Deal found 29/4£536

Wed 27/808:30SJU - LHR

1 stop17h 10mAmerican Airlines

Tue 9/906:10LHR - SJU

1 stop13h 55mAmerican Airlines

Deal found 29/4£538

Mon 10/1102:05SJU - LHR

1 stop15h 15mUnited Airlines

Thu 20/1107:40LHR - SJU

1 stop17h 15mUnited Airlines

Deal found 29/4£541

Sun 9/1107:25SJU - LGW

2 stops21h 35mMultiple Airlines

Thu 20/1119:35LGW - SJU

1 stop24h 55mMultiple Airlines

Deal found 29/4£545

Tue 28/1001:05SJU - LHR

2 stops26h 05mAir Canada

Fri 7/1118:00LHR - SJU

2 stops34h 36mAir Canada

Deal found 29/4£553

Fri 2/514:40SJU - LHR

2 stops23h 40mMultiple Airlines

Sun 4/507:25LHR - SJU

2 stops21h 27mMultiple Airlines

Deal found 28/4£612

Best flights from Puerto Rico to London
Discover carefully curated flight deals from Puerto Rico to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Tue 21/1013:32SJU - LHR

1 stop12h 13mDelta

Tue 18/1109:00LHR - SJU

2 stops18h 17mDelta

Deal found 29/4£495

Wed 24/903:15SJU - LHR

1 stop12h 30mJetBlue

Fri 10/1011:55LHR - SJU

1 stop18h 50mJetBlue

Deal found 29/4£500

Wed 3/915:58SJU - LHR

1 stop13h 37mBritish Airways

Wed 10/909:15LHR - SJU

1 stop14h 15mBritish Airways

Deal found 29/4£525

Wed 27/814:39SJU - LHR

1 stop15h 31mKLM

Tue 9/909:55LHR - SJU

2 stops17h 13mKLM

Deal found 29/4£531

Sun 24/812:43SJU - LGW

1 stop16h 17mAir France

Sun 7/912:00LGW - SJU

1 stop16h 46mAir France

Deal found 29/4£536

Wed 27/808:30SJU - LHR

1 stop17h 10mAmerican Airlines

Tue 9/906:10LHR - SJU

1 stop13h 55mAmerican Airlines

Deal found 29/4£538

Wed 3/913:25SJU - LHR

2 stops16h 15mUnited Airlines

Wed 10/908:30LHR - SJU

2 stops20h 27mUnited Airlines

Deal found 29/4£551

Thu 5/606:20SJU - LGW

1 stop19h 00mMultiple Airlines

Mon 16/610:00LGW - SJU

1 stop15h 54mMultiple Airlines

Deal found 29/4£602

Fri 29/814:05SJU - LHR

1 stop14h 20mIberia

Wed 10/909:15LHR - SJU

1 stop14h 15mIberia

Deal found 29/4£614

Tue 30/901:05SJU - LHR

2 stops24h 25mAir Canada

Sat 11/1009:30LHR - SJU

2 stops31h 30mAir Canada

Deal found 29/4£688

Wed 10/907:00SJU - LHR

2 stops18h 20mLufthansa

Thu 18/909:30LHR - SJU

2 stops19h 27mLufthansa

Deal found 29/4£691

Tue 21/1011:30SJU - LGW

2 stops22h 10mIcelandair

Tue 18/1111:55LGW - SJU

2 stops19h 22mIcelandair

Deal found 29/4£769

Last-minute flights from Puerto Rico to London
Discover last-minute flight deals from Puerto Rico to London. Data last updated 30 April 2025 and is based on user searches.

Thu 1/503:29SJU - LHR

1 stop12h 16mJetBlue

Thu 22/508:15LHR - SJU

1 stop18h 15mJetBlue

Deal found 29/4£526

Thu 1/501:05SJU - LHR

2 stops24h 25mAir Canada

Sun 4/509:30LHR - SJU

2 stops19h 27mAir Canada

Deal found 28/4£753

Fri 2/514:40SJU - LHR

2 stops23h 40mMultiple Airlines

Sun 4/507:25LHR - SJU

2 stops21h 27mMultiple Airlines

Deal found 28/4£612

Fri 2/506:00SJU - LGW

1 stop23h 00mMultiple Airlines

Sun 4/514:00LGW - SJU

1 stop23h 36mMultiple Airlines

Deal found 28/4£653

Fri 2/520:25SJU - LGW

1 stop18h 35mIberia

Thu 22/511:35LGW - SJU

1 stop12h 15mIberia

Deal found 29/4£815

Thu 15/513:12SJU - LHR

1 stop17h 13mDelta

Mon 19/513:05LHR - SJU

1 stop14h 42mDelta

Deal found 29/4£617

Mon 19/513:25SJU - LHR

1 stop14h 55mUnited Airlines

Thu 29/512:15LHR - SJU

2 stops16h 42mUnited Airlines

Deal found 29/4£678

Mon 19/513:25SJU - LHR

2 stops18h 15mLufthansa

Thu 29/507:30LHR - SJU

2 stops21h 27mLufthansa

Deal found 29/4£833

Sat 24/512:30SJU - LGW

1 stop16h 05mJetBlue

Sat 31/512:10LGW - SJU

1 stop16h 15mJetBlue

Deal found 29/4£656

Sun 25/518:15SJU - LHR

1 stop16h 20mAvianca

Sun 1/622:05LHR - SJU

2 stops21h 55mAvianca

Deal found 29/4£969

Mon 26/515:35SJU - LHR

1 stop12h 50mIberia

Mon 16/612:15LHR - SJU

1 stop14h 30mIberia

Deal found 29/4£714

Sat 31/503:33SJU - LCY

2 stops34h 02mMultiple Airlines

Wed 4/608:45LCY - SJU

3 stops18h 46mMultiple Airlines

Deal found 29/4£962

One-way flights from Puerto Rico to London
Search for one-way flight options from Puerto Rico to London. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Fri 4/703:25SJU - LGW

1 stop25h 35mMultiple Airlines

Deal found 29/4£235

Sun 11/506:20SJU - LHR

2 stops24h 35mMultiple Airlines

Deal found 29/4£265

Wed 14/506:15SJU - SEN

3 stops52h 30mMultiple Airlines

Deal found 29/4£294

Fri 3/1013:55SJU - LHR

1 stop14h 30mIberia

Deal found 29/4£301

Thu 8/503:33SJU - LHR

1 stop12h 12mJetBlue

Deal found 29/4£309

Wed 16/712:35SJU - LGW

1 stop16h 00mJetBlue

Deal found 29/4£313

Fri 9/514:10SJU - LHR

2 stops20h 25mAvianca

Deal found 29/4£330

Sat 23/818:40SJU - LHR

1 stop21h 00mLufthansa

Deal found 29/4£331

Sat 5/718:05SJU - LHR

1 stop20h 55mDelta

Deal found 29/4£340

Tue 15/707:00SJU - LGW

1 stop22h 00mDelta

Deal found 29/4£340

Mon 1/912:43SJU - LHR

1 stop15h 07mKLM

Deal found 29/4£343

Fri 3/1020:20SJU - LGW

1 stop18h 40mIberia

Deal found 29/4£348

Cheapflights Fare Finder

Use the filters below to find and compare flights from Puerto Rico to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 21/10

13:32-06:45

1 stop12h 13m

London Heathrow

Tue 18/11

09:00-23:17

2 stops18h 17m

£495

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 24/9

03:15-20:45

1 stop12h 30m

London Heathrow

Fri 10/10

11:55-01:45

1 stop18h 50m

£500

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/9

15:58-10:35

1 stop13h 37m

London Heathrow

Wed 10/9

09:15-18:30

1 stop14h 15m

£525

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 27/8

14:39-11:10

1 stop15h 31m

London Heathrow

Tue 9/9

09:55-22:08

2 stops17h 13m

£531

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sat 19/7

07:00-10:00

1 stop22h 00m

London Gatwick

Tue 19/8

12:00-23:46

1 stop16h 46m

£532

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 24/8

12:43-10:00

1 stop16h 17m

London Gatwick

Sun 7/9

12:00-23:46

1 stop16h 46m

£536

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 27/8

08:30-06:40

1 stop17h 10m

London Heathrow

Tue 9/9

06:10-15:05

1 stop13h 55m

£538

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/9

13:25-10:40

2 stops16h 15m

London Heathrow

Wed 10/9

08:30-23:57

2 stops20h 27m

£551

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 5/6

06:20-06:20

1 stop19h 00m

London Gatwick

Mon 16/6

10:00-20:54

1 stop15h 54m

£602

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sat 2/8

13:34-10:00

1 stop15h 26m

London Gatwick

Sun 17/8

12:00-23:46

1 stop16h 46m

£613

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 49 results

...

Best time to book a flight from Puerto Rico to London

Have a flexible travel schedule? Discover the best time to fly to London from Puerto Rico with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Puerto Rico to London

What is the cheapest month to book a flight from Puerto Rico to London?

Currently, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PR to LON?

When flying from Puerto Rico to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Puerto Rico to London, such as Delta, KLM and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,936 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

JetBlue

7.3

Good

2,922 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Puerto Rico to London one-way?
The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as £301. However, be on the lookout for offers from JetBlue and Avianca, as they are both options that can get you from Puerto Rico to London for a low price.
What are the most popular routes from Puerto Rico to London?
When deciding which route to take from Puerto Rico to London consider San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City as they are the most popular.
Can I find deals for flights from Puerto Rico to London that include hotel bookings?
Yes. In addition to deals on Puerto Rico to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Puerto Rico to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to London.
Can I find deals for business class flights from Puerto Rico to London?
Yes. Cheapflights offers flight deals from Puerto Rico to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Puerto Rico to London?
Currently, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Deal

Hounslow

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Ilford

Hayes

Southend-on-Sea

Crawley

Wembley

Ipswich

Maidstone

Winchester

Folkestone

Dartford

Watford

Chichester

Browse thousands of different options on Cheapflights for your next trip

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How does Cheapflights help users find flights from Puerto Rico to London?

Deals for Puerto Rico to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Puerto Rico.

Can Cheapflights find flights from Puerto Rico to London with no change fees?

Certainly. Search results for flights to London from Puerto Rico shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Puerto Rico to London become cheaper?

Not ready to book yet? You can track prices for flights from Puerto Rico to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Puerto Rico to London from £235

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Puerto Rico to London

Keep the following information in mind while searching for Puerto Rico to London flight deals. Data was last updated 30 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Puerto Rico to London

Cheapest flights from Puerto Rico to LondonExplore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Explore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Puerto Rico to London that are best for you.

Best time to book a flight from Puerto Rico to London

Have a flexible travel schedule? Discover the best time to fly to London from Puerto Rico with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Puerto Rico to London

What is the cheapest month to book a flight from Puerto Rico to London?

What is the cheapest time of day to fly from PR to LON?

Find hourly flight availability from Puerto Rico to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 30 April 2025.

Read through reviews of airlines operating flights from Puerto Rico to London, such as Delta, KLM and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Puerto Rico to London one-way?

What are the most popular routes from Puerto Rico to London?

Can I find deals for flights from Puerto Rico to London that include hotel bookings?

How can I find direct flights from Puerto Rico to London?

Can I find deals for business class flights from Puerto Rico to London?

What is the cheapest month to book a flight from Puerto Rico to London?

Travelling to a place near Puerto Rico?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Puerto Rico to London

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Puerto Rico to London?

Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to London?

Can Cheapflights find flights from Puerto Rico to London with no change fees?

Can Cheapflights notify me if prices for flights from Puerto Rico to London become cheaper?

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Cheapest flights from Puerto Rico to London
Explore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.