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Cheap flights from San Juan to London (LON)

SJU — LON
Oct 24 — Oct 311
Sat 10/24
Sat 10/31
1 adult, Economy
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Find flight deals from San Juan to London

Popular in

June

Cheapest in

February

Average price

$785
Highest demand for flights based on searches. 20% potential increase in price ($219 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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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.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from San Juan to London

How far ahead should I book a flight from San Juan to London?

The best time to book flights from San Juan to London is 77 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, January is the cheapest month in which you can book a flight from San Juan to London (average of $600). Flying from San Juan to London in June is currently the most expensive (average of $1,219). 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.

Reviews of airlines servicing London

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from San Juan to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
7.8
Good
8,593 reviews
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
10,233 reviews
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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.
American Airlines
7.0
Good
12,073 reviews
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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.
Iberia
7.0
Good
3,248 reviews
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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.
British Airways
6.7
Okay
8,227 reviews
Delta
7.8
Good
8,593 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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

  • What are the cheapest airlines flying from San Juan to London round-trip?

    Cheapflights users have booked flights from San Juan to London round-trip from $600. Other airlines that can offer you cheap pricing are American Airlines, from $670, and Delta, from $676. United Airlines is currently priced 29% below the average price you’ll pay for this route.

  • Can I find deals for flights from San Juan to London that include hotel bookings?

    Yes. In addition to deals on San Juan to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Juan to London.

  • Can I find deals for business class flights from San Juan to London?

    Yes. Cheapflights offers flight deals from San Juan to London 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 to London?

    Currently, January is the cheapest month in which you can book a flight from San Juan to London (average of $600). Flying from San Juan to London in June is currently the most expensive (average of $1,219). 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

Traveling to a place near London?

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Dorking
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Kingston upon Thames
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Slough
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Top 5 airlines flying from San Juan to London

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$600Average$962FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$670Average$1,050FlexibilityNo cancel feeOn-time71%
DeltaCheapest$676Average$881FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$745Average$1,001FlexibilityNo cancel feeOn-time62%
IberiaCheapest$767Average$1,015FlexibilityNo cancel feeOn-time77%

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