$276+ Cheap flights from San Juan to London (LON)
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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Juan to London with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.The best prices from San Juan to London are usually found in September or October, booked 40 days in advance, depart on a Wednesday or Monday and return on a Tuesday
Cheap flight deals from San Juan to London
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to London (LON). 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 February 23, 2025.
Round-trip from | $633 (United Airlines) |
|---|---|
One-way from | $276 (JetBlue) |
Popular in | June |
Cheapest in | September |
Average price | $688 |
Find flight deals from San Juan to London
Cheapest flights from San Juan to LondonExplore the most affordable flight options available from San Juan to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.
Explore the most affordable flight options available from San Juan to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.
This Finnair deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This JetBlue deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This JetBlue deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Aeromexico deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Iberia deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from San Juan to London within your budget
Customize your flight search to find flights from San Juan to London 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 2,558,603 searches. Data last updated February 23, 2025.
Fly from
Fly to
Route
Depart
Return
Price
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 3/18
1:10 pm-8:25 am
1 stop15h 15m
London Heathrow
Tue 3/25
9:30 am-11:36 pm
2 stops18h 06m
San JuanLondon
SJU - LGW
SJULGW
San Juan Luis Munoz Marin Intl
Tue 4/22
2:40 pm-2:40 pm
2 stops19h 00m
London Gatwick
Tue 4/29
10:00 am-9:25 am
1 stop28h 25m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Sun 3/16
1:30 pm-7:05 am
1 stop13h 35m
London Heathrow
Tue 3/25
10:10 am-11:15 pm
1 stop17h 05m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Wed 4/30
7:15 am-6:25 am
2 stops18h 10m
London Heathrow
Tue 5/6
6:30 am-11:48 pm
2 stops22h 18m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/24
9:45 pm-8:45 pm
1 stop19h 00m
London Heathrow
Mon 3/31
8:15 am-7:29 pm
1 stop16h 14m
San JuanLondon
SJU - LGW
SJULGW
San Juan Luis Munoz Marin Intl
Fri 8/22
12:35 pm-9:35 am
1 stop16h 00m
London Gatwick
Fri 9/5
12:10 pm-1:15 am
1 stop18h 05m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 4/22
2:40 pm-8:20 pm
2 stops24h 40m
London Heathrow
Tue 4/29
9:25 pm-1:21 am
3 stops32h 56m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Thu 4/24
3:34 pm-10:15 am
2 stops37h 41m
London Heathrow
Sat 5/3
8:55 am-8:23 pm
2 stops40h 28m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/24
9:03 am-7:30 am
1 stop18h 27m
London Heathrow
Mon 3/31
7:30 pm-11:57 pm
2 stops33h 27m
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 4/29
1:05 am-6:30 am
2 stops24h 25m
London Heathrow
Tue 5/6
9:30 am-11:57 pm
2 stops19h 27m
Best time to book a flight from San Juan to London
Have a flexible travel schedule? Discover the best time to fly to London from San Juan with our price prediction graph.
Travel insights for flights from San Juan to London
Get recent, data-driven insights about flights from San Juan to London including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from San Juan to London?
Use this chart to determine the optimal time to book a round-trip flight from San Juan to London. Price data was last updated on February 14, 2025.
The best time to book flights from San Juan to London is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Juan to London?
Currently, November is the cheapest month in which you can book a flight from San Juan to London (average of $661). Flying from San Juan to London in June is currently the most expensive (average of $1,136). 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 LON?
Find hourly flight availability from San Juan to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 23, 2025.
It’s typically best to fly out from San Juan to London at noon. Doing so could potentially save you 11% on the flight price compared to flying in the evening, which is usually more expensive.
What is the cheapest day to fly from San Juan to London?
Use this chart to determine the cheapest time to fly round-trip from San Juan to London. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their San Juan to London flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated February 23, 2025.
See what other customers who have flown with Delta, KLM and Air France from San Juan to London have to say. 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.
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Entertainment
Crew
Overall
Comfort
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Juan to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Juan to London
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Juan to London
Discover the top 6 airlines that operate flights from San Juan to London. 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 2,558,603 searches. Data last updated February 23, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$587 | Average$851 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$605 | Average$817 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$639 | Average$1,242 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$651 | Average$898 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$651 | Average$797 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$654 | Average$840 | FlexibilityNo cancel fee | On-time72% |