Cheap flights from San Juan to London

Luis Muñoz Marín
SJU
London
LON

Flight deals from San Juan to London

Below you can see the best deals on flights San Juan — London for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 14 August, from $306.

Top 10 cheap flights from San Juan to London

F9
Z0
$ 306

San Juan — London

22:48—10:00
14 Aug 2026
30 h 12 m
1 stop
F9
Z0
$ 306

San Juan — London

20:37—10:00
14 Aug 2026
32 h 23 m
1 stop
F9
Z0
$ 306

San Juan — London

18:09—10:00
14 Aug 2026
34 h 51 m
1 stop
F9
Z0
$ 306

San Juan — London

12:49—10:00
14 Aug 2026
40 h 11 m
1 stop
F9
Z0
$ 306

San Juan — London

03:10—10:00
14 Aug 2026
49 h 50 m
1 stop
F9
Z0
$ 309

San Juan — London

22:48—10:00
14 Aug 2026
54 h 12 m
1 stop
F9
Z0
$ 309

San Juan — London

20:37—10:00
14 Aug 2026
56 h 23 m
1 stop
F9
Z0
$ 310

San Juan — London

22:48—10:00
13 Aug 2026
30 h 12 m
1 stop
F9
Z0
$ 310

San Juan — London

20:37—10:00
13 Aug 2026
32 h 23 m
1 stop
F9
Z0
$ 310

San Juan — London

18:09—10:00
13 Aug 2026
34 h 51 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

When is the best time to book a flight from San Juan to London?

The price of a flight from San Juan to London changes depending on how far ahead you book. For the best chance of a lower fare, book around 8 days before departure, when the average ticket costs about $577. Fares also tend to climb as the departure date gets closer.

About the San Juan — London flight

Looking for cheap flights from San Juan to London? There are no direct flights on this route, but you can compare convenient connections and fares from different airlines, then book your San Juan — London ticket online.

There are no direct flights — tickets are sold with a connection (usually via John F. Kennedy International Airport), the whole trip with a connection takes about 17 h 5 min, flights are operated by American Airlines, Iberia, JetBlue, Delta and 1 more airline, the distance between the cities is around 6,765 km.

Planning your trip? You may find our London travel guide, how to get from the airport into town and London weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $306Min. price
AugustCheapest
JanuaryPeak season
NoDirect flights
6,765 kmDistance
12 h 20 minTravel time

Flight ticket prices by day: San Juan — London

Below is a calendar of the lowest flight ticket prices for San Juan — London by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $306 in August, and the most expensive are around $312 in January. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from San Juan to London by month. Tickets are usually cheapest in February (around $478) and priciest in June (about $760) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$539mediumMay$515lowSep$552medium
Feb$478lowJun$760highOct$527low
Mar$576mediumJul$735highNov$515low
Apr$637highAug$686highDec$650high

Some values are estimated based on seasonality.

When to fly

Weather in London: it is warmest in July (up to 22 °C on average) and coolest in January (around 7 °C). The driest month is June.

Tickets are usually cheapest in August and most expensive in January. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · London

Dry and wet days · London

Wind speed and direction · London

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How to get the best deal on a San Juan — London ticket

  • Book ahead: fares for San Juan — London are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to London is usually August — plan your trip around it if your dates are flexible.
  • There are no direct flights — travellers usually connect via John F. Kennedy International Airport. Compare different connections: a layover adds time but lowers the price.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the San Juan — London route are operated by 5 airlines; American Airlines runs the most flights. There are no direct flights — compare carriers and convenient connections below.

There are no direct flights on the San Juan — London route. Showing airlines offering connecting flights.
  • American AirlinesAA
    WebsiteFleet: 965211M pax/year
    • SJU → MAD → LHR (with stopover)
    Open →
  • IberiaIB
    WebsiteFleet: 9224M pax/year
    • SJU → MAD → LHR (with stopover)
    Open →
  • JetBlueB6
    WebsiteFleet: 30742.5M pax/year
    • SJU → JFK → LHR (with stopover)
    Open →
  • DeltaDL
    WebsiteFleet: 986190M pax/year
    • SJU → JFK → LHR (with stopover)
    Open →
  • British AirwaysBA
    WebsiteFleet: 29243M pax/year
    • SJU → JFK → LHR (with stopover)
    Open →

Cities and airports on the San Juan — London route

Flights San Juan — London depart from Luis Muñoz Marín International Airport and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

San Juan

SJU
Puerto Rico
About the cityHow to get thereWeatherAll about the country Puerto Rico
Arrival

London

LON
United Kingdom
About the cityHow to get thereWeatherAll about the country United Kingdom
Departure airports
Arrival airports

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Frequently asked questions about the San Juan — London flight

How long is the flight from San Juan to London?

There are no direct flights, so travel time depends on the connection in John F. Kennedy International Airport. Based on search data, the whole trip takes about 17 h 5 min including the layover.

How far is it from San Juan to London?

The distance from San Juan to London is about 6,765 km.

Are there direct flights from San Juan to London?

There are no nonstop flights on this route — tickets are only available with a connection (usually via John F. Kennedy International Airport).

Which airlines fly from San Juan to London?

Airlines operating San Juan — London include American Airlines, Iberia, JetBlue, Delta, British Airways. See the full list with schedules in the "Airlines" section on this page.

Which airports do San Juan — London flights use?

Flights from San Juan depart from Luis Muñoz Marín International Airport, and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from San Juan to London?

The price of a San Juan — London ticket depends on your travel date, season and demand: it is usually cheapest to fly in August, and most expensive in January. Tickets typically cost between $306 and $312. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights San Juan — London?

Flights San Juan — London are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is August. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from San Juan to London?

To catch a low fare San Juan — London, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually August.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from San Juan

See all
OrlandoNew York CityFort LauderdalePhiladelphiaMiamiSanto DomingoPunta CanaAtlantaDallasCharlotte AmalieChicagoHoustonTampaWashington, D.C.BostonTortolaPanama CityHartfordMadridMedellínGustaviaCharlotteBogotaJacksonvilleSaint CroixMexico CityViequesSan AntonioDetroitRaleighDominicaTorontoClevelandVirgin GordaSantiagoCulebraSan JoséProvidenceMinneapolisMontreal

Where else you can fly from London

See all
New York CityAmsterdamMadridBarcelonaDublinParisFrankfurt am MainMilanPalmaMalagaEdinburghIstanbulGenevaGlasgowBelfastLisbonFaroZurichNiceRomeLos AngelesCopenhagenAthensAlicanteBerlinSan FranciscoDubaiBostonIbizaTorontoAntalyaMunichChicagoDohaBristolStockholmOsloViennaDusseldorfCardiff

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