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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport from £252

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to London Heathrow are usually found in January or February, booked 58 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 25 March 2025.

Round-trip from

£503

One-way from

£252

Popular in

June

Cheapest in

January

Average price

£568
KLM
  • KLM
  • 17/5-26/5
  • 2 total stops
  • 29h 20m total
  • San Juan to London
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JetBlue
  • JetBlue
  • 2/4
  • 1 total stop
  • 14h 53m total
  • San Juan to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£87 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Tue 28/1001:05SJU - LHR
2 stops26h 05mAir Canada
Fri 7/1118:00LHR - SJU
1 stop24h 45mAir Canada
Deal found 24/3£503
Mon 14/413:19SJU - LHR
1 stop14h 31mKLM
Fri 25/410:55LHR - SJU
1 stop17h 53mKLM
Deal found 24/3£505
Wed 30/406:00SJU - LHR
1 stop19h 30mJetBlue
Wed 14/508:25LHR - SJU
1 stop20h 32mJetBlue
Deal found 25/3£507
Wed 10/913:27SJU - LHR
1 stop13h 38mDelta
Thu 18/910:55LHR - SJU
1 stop16h 47mDelta
Deal found 25/3£509
Wed 29/1007:35SJU - LHR
2 stops18h 45mUnited Airlines
Fri 7/1112:05LHR - SJU
2 stops16h 31mUnited Airlines
Deal found 24/3£510
Wed 23/415:34SJU - LHR
1 stop16h 56mMultiple Airlines
Wed 30/420:55LHR - SJU
2 stops31h 53mMultiple Airlines
Deal found 24/3£510
Sun 24/812:05SJU - LHR
1 stop13h 50mAmerican Airlines
Mon 8/907:50LHR - SJU
1 stop15h 40mAmerican Airlines
Deal found 24/3£520
Mon 25/813:54SJU - LHR
1 stop13h 11mBritish Airways
Mon 8/907:50LHR - SJU
1 stop15h 40mBritish Airways
Deal found 24/3£520
Wed 10/914:28SJU - LHR
2 stops35h 17mAir France
Thu 18/908:55LHR - SJU
2 stops18h 47mAir France
Deal found 24/3£567
Tue 25/317:29SJU - LHR
1 stop14h 51mIberia
Tue 1/413:40LHR - SJU
1 stop15h 00mIberia
Deal found 24/3£614
Tue 22/402:45SJU - LHR
2 stops24h 15mAer Lingus
Wed 30/413:25LHR - SJU
2 stops17h 04mAer Lingus
Deal found 24/3£655

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 25 March 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

Sat 17/5

13:12-08:50

1 stop14h 38m

London Heathrow

Mon 26/5

13:05-22:47

1 stop14h 42m

£503

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 30/4

06:00-06:30

1 stop19h 30m

London Heathrow

Wed 14/5

08:25-23:57

1 stop20h 32m

£507

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/9

13:27-08:05

1 stop13h 38m

London Heathrow

Thu 18/9

10:55-22:42

1 stop16h 47m

£509

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 22/4

13:25-10:40

2 stops16h 15m

London Heathrow

Wed 30/4

09:30-13:45

2 stops33h 15m

£510

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 23/4

15:34-13:30

1 stop16h 56m

London Heathrow

Wed 30/4

20:55-23:48

2 stops31h 53m

£510

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 24/8

12:05-06:55

1 stop13h 50m

London Heathrow

Mon 8/9

07:50-18:30

1 stop15h 40m

£520

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 25/8

13:54-08:05

1 stop13h 11m

London Heathrow

Mon 8/9

07:50-18:30

1 stop15h 40m

£520

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 10/4

01:05-21:00

2 stops38h 55m

London Heathrow

Sat 19/4

08:30-13:50

1 stop34h 20m

£557

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 22/4

00:58-20:45

1 stop14h 47m

London Heathrow

Wed 30/4

08:25-01:29

1 stop22h 04m

£565

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/9

14:28-06:45

2 stops35h 17m

London Heathrow

Thu 18/9

08:55-22:42

2 stops18h 47m

£567

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 19 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 21 March 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 58 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 25 March 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 25 March 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
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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
1,318 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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
1,423 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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
8,605 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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
2,924 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

8.0

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 (£503), JetBlue (£507), and Delta (£509) 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 £252. However, be on the lookout for offers from United Airlines and Air France, 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
Croydon
Slough
Luton
Eastbourne
Northampton
Ilford
Swindon
Hayes
Crawley
Southend-on-Sea
Wembley
Maidstone
Winchester
Ipswich
Watford
Southall

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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

Top airline flying from Luis Munoz Marin Intl to Heathrow

Discover the top airline that operate flights from Luis Munoz Marin Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£534Average£818FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Luis Munoz Marin Intl to Heathrow?

Deals for Luis Munoz Marin Intl to Heathrow 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 Luis Munoz Marin Intl to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Luis Munoz Marin Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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.

Can Cheapflights notify me if prices for flights from Luis Munoz Marin Intl to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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