The cheapest times to fly from SJU to LGW are

  • January 8th to March 25th
  • April 23rd to May 27th
  • September 17th to September 30th
  • October 15th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SJU to LGW is late May. Prices can be as high as $1487 for Saturday flights during early August, or as low as $646 for Tuesday flights around late May.


When to Fly to London

Flying from San Juan, PR (SJU) to London (LGW) will usually cost between $668 to $1234 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May with an average ticket price of $656. Due to high demand the most expensive time to fly is early August, with an average price of $1242. Planning your trip to low-cost times can easily save you $587 on economy flights and even more on first-class flights. Generally, any price below $788 can be considered a good price for a round-trip SJU to LGW flight.

See below for a graph of average weekly prices for the SJU to LGW route. All prices are for round-trip tickets in USD.

SJU to LGW Flight Prices

Compared to other flights, the SJU to LGW flight is cheaper than the average and costs slightly more than the average flight leaving from San Juan. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to LGW, and Monday the cheapest day to fly back into SJU. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $94 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $817. Return trip prices are from the LGW to SJU flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SJU to LGW can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 31 minutes may not be realistic.


Flight Hacking SJU to LGW

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SJU to LGW — but Champion Traveler does!

Hack #1: New York, NY (SJU > JFK > LGW)

  • Price for both tickets: $676
  • Average savings: $112 (14.21%)

See SJU to JFK flights

Hack #2: Orlando, FL (SJU > MCO > LGW)

  • Price for both tickets: $702
  • Average savings: $86 (10.91%)

See SJU to MCO flights

Hack #3: Boston, MA (SJU > BOS > LGW)

  • Price for both tickets: $708
  • Average savings: $81 (10.22%)

See SJU to BOS flights


Flight Questions Answered

Still have questions about flying from SJU to LGW? We’ve got answers.

Which airlines fly this route?

You can find 20 major airlines flying this route most often: Aer Lingus, Air Canada, Air Europa, Air France, Air Transat, American, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue, KLM, LIAT, Lufthansa, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet, and potentially more during busy seasons.

How far away is it from London Gatwick Airport to Luis Munoz Marin International Airport?

The distance between the two airports is roughly 4190 miles or 6743 kilometers.

How long does it take to fly from SJU to LGW?

The real-world flight time for a nonstop SJU to LGW flight is about 8 hour 31 minutes.

How many flights go between San Juan, PR and London?

It depends on the day of the week and the date, but a typical day might have around 78 available flights from SJU to LGW.


Airport Location Info


Departing Airport

Origination code SJU
Origination airport name Luis Munoz Marin International Airport
City San Juan, PR
Country the United States
Latitude 18.4
Longitude -66

Return Airport

Destination code LGW
Destination airport name London Gatwick Airport
City London
Country the United Kingdom
Latitude 51.1
Longitude -0.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.