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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport from £263

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to London Heathrow are usually found in March or January, booked 34 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Luis Munoz Marin Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 April 2025.

Round-trip from

£496

One-way from

£263

Popular in

June

Cheapest in

March

Average price

£587
KLM
  • KLM
  • 27/8-9/9
  • 2 total stops
  • 31h 54m total
  • San Juan to London
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JetBlue
  • JetBlue
  • 3/10
  • 1 total stop
  • 12h 35m total
  • San Juan to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£85 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Luis Munoz Marin Intl to Heathrow

Cheapest flights from Luis Munoz Marin Intl to Heathrow
Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Tue 9/901:05SJU - LHR
1 stop14h 35mUnited Airlines
Thu 18/913:40LHR - SJU
1 stop31h 02mUnited Airlines
Deal found 15/4£499
Mon 6/1003:15SJU - LHR
1 stop12h 30mJetBlue
Sun 19/1008:15LHR - SJU
1 stop18h 03mJetBlue
Deal found 15/4£500
Wed 29/1014:28SJU - LHR
2 stops15h 47mDelta
Fri 7/1120:00LHR - SJU
2 stops22h 23mDelta
Deal found 15/4£506
Mon 19/513:12SJU - LHR
1 stop16h 03mAir France
Thu 29/509:20LHR - SJU
1 stop15h 28mAir France
Deal found 15/4£511
Wed 14/501:05SJU - LHR
1 stop14h 35mLufthansa
Thu 22/512:00LHR - SJU
1 stop16h 57mLufthansa
Deal found 15/4£522
Mon 25/816:05SJU - LHR
1 stop13h 30mBritish Airways
Mon 8/906:15LHR - SJU
1 stop17h 15mBritish Airways
Deal found 15/4£523
Sun 18/513:12SJU - LHR
1 stop14h 38mKLM
Sun 8/609:20LHR - SJU
1 stop18h 28mKLM
Deal found 15/4£549
Sat 2/808:30SJU - LHR
1 stop18h 35mAmerican Airlines
Sun 17/806:10LHR - SJU
1 stop17h 20mAmerican Airlines
Deal found 15/4£574
Wed 14/503:33SJU - LHR
1 stop24h 57mIcelandair
Thu 22/508:25LHR - SJU
2 stops29h 47mIcelandair
Deal found 15/4£598
Tue 30/901:05SJU - LHR
2 stops24h 25mAir Canada
Sat 11/1014:05LHR - SJU
2 stops26h 55mAir Canada
Deal found 15/4£670
Tue 13/501:59SJU - LHR
3 stops28h 56mMultiple Airlines
Wed 21/515:05LHR - SJU
3 stops33h 02mMultiple Airlines
Deal found 15/4£691

Cheapflights Fare Finder

Customise your flight search to find flights from Luis Munoz Marin Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 April 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Heathrow

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 27/8

12:43-08:50

1 stop15h 07m

London Heathrow

Tue 9/9

10:55-22:42

1 stop16h 47m

£496

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 5/5

01:05-20:40

1 stop14h 35m

London Heathrow

Tue 13/5

15:20-23:57

1 stop13h 37m

£497

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 6/10

03:15-20:45

1 stop12h 30m

London Heathrow

Sun 19/10

08:15-21:18

1 stop18h 03m

£498

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/9

11:55-06:55

1 stop14h 00m

London Heathrow

Thu 18/9

08:55-20:10

2 stops16h 15m

£506

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 19/5

13:12-10:15

1 stop16h 03m

London Heathrow

Thu 29/5

09:20-19:48

1 stop15h 28m

£511

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 14/5

12:50-11:25

2 stops17h 35m

London Heathrow

Wed 21/5

18:50-12:01

1 stop22h 11m

£512

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 14/5

18:55-20:45

1 stop20h 50m

London Heathrow

Sun 18/5

08:25-18:05

1 stop14h 40m

£521

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 25/8

16:05-10:35

1 stop13h 30m

London Heathrow

Mon 8/9

06:15-18:30

1 stop17h 15m

£523

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 13/5

01:05-06:30

2 stops24h 25m

London Heathrow

Sun 18/5

08:30-23:57

2 stops20h 27m

£596

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 29/8

14:05-09:25

1 stop14h 20m

London Heathrow

Wed 10/9

06:15-18:30

1 stop17h 15m

£648

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 20 results
1
2

Best time to book a flight from Luis Munoz Marin Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Luis Munoz Marin Intl to Heathrow. Price data was last updated on 11 April 2025.

The price you pay for your flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £112). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport 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 SJU to LHR?

Find hourly flight availability from Luis Munoz Marin Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

It’s optimal to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in the morning. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 15 April 2025.
Read through reviews of airlines operating flights from San Juan to London, such as Delta, KLM and Air France. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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
1,323 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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
8,658 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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
2,926 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

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

Find useful and relevant information for your journey from Luis Munoz Marin Intl to Heathrow. 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 flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport round-trip?

    According to our current data, KLM (£496), United Airlines (£497), and JetBlue (£498) offers the cheapest pricing from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport. Users have found that KLM is 20% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £263. However, be on the lookout for offers from Lufthansa and United Airlines, as they are both options that can get you from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport for a low price.

  • Can I find deals for flights from Luis Munoz Marin Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to Heathrow.

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Heathrow 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £112). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport 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

Travelling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Hounslow
Deal
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Wembley
Northampton
Hayes
Crawley
Southend-on-Sea
Maidstone
Swindon
Ipswich
Southall
Ilford
Winchester
Folkestone

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Alternative routes for Luis Munoz Marin Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Gatwick flights

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Can Cheapflights find flights from Luis Munoz Marin Intl to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Luis Munoz Marin Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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