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.

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).

What is the cheapest time of day to fly from SJU to LHR?

When flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£225+ Flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

Cheap flight deals from Luis Munoz Marin Intl to Heathrow

Round-trip from	£397
One-way from	£225
Popular in	June
Cheapest in	September
Average price	£572

Iberia
17/2-24/2
3 total stops
31h 54m total
San Juan to London

Search Deals

22/4
3 total stops
57h 05m total
San Juan to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£143 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Find flight deals from Luis Munoz Marin Intl to Heathrow

Enter your travel dates to find the best prices.

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 8 January 2026.

Tue 17/218:10SJU - LHR

1 stop12h 25mIberia

Tue 24/206:05LHR - SJU

2 stops19h 29mIberia

Deal found 6/1£397

Tue 10/217:51SJU - LHR

1 stop14h 29mIberia

Wed 18/211:55LHR - SJU

1 stop15h 39mIberia

Deal found 8/1£401

Wed 22/413:31SJU - LHR

1 stop18h 04mBritish Airways

Thu 30/408:50LHR - SJU

2 stops18h 15mBritish Airways

Deal found 7/1£402

Tue 17/214:12SJU - LHR

1 stop14h 48mKLM

Tue 24/208:55LHR - SJU

1 stop16h 17mKLM

Deal found 6/1£405

Tue 10/217:50SJU - LHR

1 stop13h 00mUnited Airlines

Wed 18/206:50LHR - SJU

2 stops19h 32mUnited Airlines

Deal found 8/1£409

Wed 18/215:55SJU - LHR

1 stop15h 45mKLM

Thu 26/208:55LHR - SJU

1 stop19h 01mKLM

Deal found 8/1£411

Mon 16/218:37SJU - LHR

1 stop13h 03mDelta

Mon 2/306:30LHR - SJU

2 stops21h 26mDelta

Deal found 8/1£414

Wed 18/207:40SJU - LHR

1 stop19h 50mUnited Airlines

Thu 26/208:30LHR - SJU

2 stops17h 52mUnited Airlines

Deal found 7/1£417

Tue 17/202:05SJU - LHR

1 stop14h 30mUnited Airlines

Fri 27/209:30LHR - SJU

2 stops19h 06mUnited Airlines

Deal found 8/1£417

Wed 18/207:30SJU - LHR

2 stops21h 15mDelta

Thu 26/210:10LHR - SJU

2 stops17h 48mDelta

Deal found 6/1£419

Tue 21/401:00SJU - LHR

2 stops24h 30mAir Canada

Wed 29/409:30LHR - SJU

2 stops19h 20mAir Canada

Deal found 7/1£421

Best flights from Luis Munoz Marin Intl to Heathrow
Discover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 January 2026.

Wed 22/413:31SJU - LHR

1 stop18h 04mBritish Airways

Thu 30/408:50LHR - SJU

2 stops18h 15mBritish Airways

Deal found 7/1£402

Wed 18/215:55SJU - LHR

1 stop15h 45mKLM

Thu 26/210:10LHR - SJU

1 stop17h 46mKLM

Deal found 7/1£411

Tue 21/401:00SJU - LHR

1 stop14h 40mUnited Airlines

Wed 29/410:25LHR - SJU

2 stops15h 59mUnited Airlines

Deal found 7/1£417

Wed 18/206:15SJU - LHR

1 stop20h 10mDelta

Fri 27/210:10LHR - SJU

2 stops17h 48mDelta

Deal found 6/1£419

Tue 31/306:00SJU - LHR

1 stop22h 00mBritish Airways

Tue 7/421:10LHR - SJU

2 stops29h 55mBritish Airways

Deal found 8/1£410

Wed 18/207:40SJU - LHR

1 stop19h 50mUnited Airlines

Thu 26/208:30LHR - SJU

2 stops17h 52mUnited Airlines

Deal found 7/1£417

Wed 22/413:15SJU - LHR

1 stop16h 05mKLM

Wed 29/409:20LHR - SJU

1 stop15h 46mKLM

Deal found 7/1£417

Sun 29/307:11SJU - LHR

1 stop22h 54mBritish Airways

Wed 8/409:15LHR - SJU

1 stop17h 50mBritish Airways

Deal found 6/1£417

Wed 22/413:25SJU - LHR

1 stop12h 25mBritish Airways

Wed 29/409:15LHR - SJU

1 stop17h 50mBritish Airways

Deal found 6/1£417

Last-minute flights from Luis Munoz Marin Intl to Heathrow
Discover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated 8 January 2026 and is based on user searches.

Thu 22/117:51SJU - LHR

1 stop14h 29mIberia

Thu 29/120:50LHR - SJU

2 stops31h 09mIberia

Deal found 6/1£426

Tue 10/217:51SJU - LHR

1 stop14h 29mIberia

Wed 18/211:55LHR - SJU

1 stop15h 39mIberia

Deal found 8/1£401

Tue 10/217:50SJU - LHR

1 stop13h 00mUnited Airlines

Wed 18/206:50LHR - SJU

2 stops19h 32mUnited Airlines

Deal found 8/1£409

Mon 16/218:37SJU - LHR

1 stop13h 03mDelta

Mon 2/306:30LHR - SJU

2 stops21h 26mDelta

Deal found 8/1£414

Tue 17/218:10SJU - LHR

1 stop12h 25mIberia

Tue 24/206:05LHR - SJU

2 stops19h 29mIberia

Deal found 6/1£397

Tue 17/214:12SJU - LHR

1 stop14h 48mKLM

Tue 24/208:55LHR - SJU

1 stop16h 17mKLM

Deal found 6/1£405

Wed 18/214:23SJU - LHR

1 stop14h 12mFinnair

Fri 27/210:35LHR - SJU

1 stop16h 56mFinnair

Deal found 7/1£411

Wed 18/208:30SJU - LHR

1 stop17h 25mUnited Airlines

Thu 26/208:30LHR - SJU

2 stops17h 52mUnited Airlines

Deal found 7/1£417

Wed 18/207:30SJU - LHR

2 stops19h 35mDelta

Fri 27/208:55LHR - SJU

2 stops19h 03mDelta

Deal found 6/1£419

Sat 28/215:55SJU - LHR

1 stop13h 05mKLM

Sun 15/308:40LHR - SJU

2 stops19h 19mKLM

Deal found 6/1£422

One-way flights from Luis Munoz Marin Intl to Heathrow
Search for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 8 January 2026.

Wed 22/407:30SJU - LHR

3 stops57h 05mMultiple Airlines

Deal found 8/1£225

Wed 22/423:59SJU - LHR

1 stop15h 46mJetBlue

Deal found 6/1£227

Tue 20/107:30SJU - LHR

1 stop18h 55mVirgin Atlantic

Deal found 6/1£239

Fri 6/314:25SJU - LHR

1 stop12h 30mJetBlue

Deal found 7/1£242

Tue 20/118:10SJU - LHR

2 stops18h 40mAer Lingus

Deal found 6/1£255

Wed 22/413:31SJU - LHR

1 stop14h 29mIberia

Deal found 8/1£256

Mon 19/114:15SJU - LHR

1 stop14h 45mKLM

Deal found 6/1£259

Wed 22/413:50SJU - LHR

2 stops18h 15mDelta

Deal found 7/1£264

Sun 1/306:00SJU - LHR

3 stops50h 40mMultiple Airlines

Deal found 8/1£265

Fri 16/116:40SJU - LHR

3 stops50h 00mMultiple Airlines

Deal found 7/1£266

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:31-12:35

1 stop18h 04m

London Heathrow

Thu 30/4

08:50-22:05

2 stops18h 15m

£402

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 31/3

06:00-09:00

1 stop22h 00m

London Heathrow

Tue 7/4

21:10-22:05

2 stops29h 55m

£410

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

15:55-11:40

1 stop15h 45m

London Heathrow

Thu 26/2

10:10-23:56

1 stop17h 46m

£411

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 21/4

01:00-20:40

1 stop14h 40m

London Heathrow

Wed 29/4

10:25-21:24

2 stops15h 59m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

07:40-07:30

1 stop19h 50m

London Heathrow

Thu 26/2

08:30-22:22

2 stops17h 52m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:15-10:20

1 stop16h 05m

London Heathrow

Wed 29/4

09:20-20:06

1 stop15h 46m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 29/3

07:11-11:05

1 stop22h 54m

London Heathrow

Wed 8/4

09:15-22:05

1 stop17h 50m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:25-06:50

1 stop12h 25m

London Heathrow

Wed 29/4

09:15-22:05

1 stop17h 50m

£417

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

06:15-06:25

1 stop20h 10m

London Heathrow

Fri 27/2

10:10-23:58

2 stops17h 48m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

07:30-21:35

3 stops57h 05m

£225

Flights are sorted by cheapest return flights first.

Deals found on 8/1

Showing 1-10 of 12 results

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?

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 69 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, September 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 £75). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £724). 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.

Related info for your journey

How long is the flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?
For as low as £411, British Airways can have you in London Heathrow Airport from San Juan Luis Munoz Marin Intl Airport in 12h 26m. Airlines will cover a distance of 4179 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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, September 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 £75). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £724). 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

Milton Keynes

Luton

Croydon

Northampton

Slough

Hounslow

Gatwick

Ilford

Wembley

Brentford

Hayes

Colchester

Watford

Crawley

Swindon

Kingston upon Thames

Bedford

Chelmsford

Eastbourne

Romford

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport from £225

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Luis Munoz Marin Intl to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Luis Munoz Marin Intl to Heathrow

Cheapest flights from Luis Munoz Marin Intl to HeathrowExplore 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 8 January 2026.

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 8 January 2026.

Cheapflights Fare Finder

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.

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.

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?

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

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.

How long is the flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

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

How can I 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?

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

Travelling to a place near London Heathrow Airport?

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 Luis Munoz Marin Intl to Heathrow

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 Luis Munoz Marin Intl to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Luis Munoz Marin Intl to Heathrow?

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

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

100% Free

Book with Flexibility

Travel Smart

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 8 January 2026.