LHR → SJU
Cheap flights from London to San Juan
We track fares from London to San Juan, Puerto Rico every day. Across 37 prices we've logged, the cheapest was €744 return and a typical fare runs around €794. The cheapest month to fly is usually Dec 2026.
Cheapest seen
€744
Typical price
€794
Cheapest month
Dec 2026
Non-stop
With a stop
No live deal on this exact route right now — but the typical fare is around €794. Search your dates below, or browse all current deals.
Cheapest months to fly
The typical cheapest fare by month, from our tracking — a guide only. Check the live price on Aviasales before booking.
| Month | Typical from | Check price |
|---|---|---|
| Dec 2026 | €962 | Check on Aviasales → |
Each link opens the live Aviasales search for that month, where you can pick the exact cheapest dates.
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London to San Juan: the basics
- Route
- London (LHR) → San Juan (SJU)
- Distance
- 6,730 km
- Non-stop
- No (with a stop)
- Airlines seen
- B6, FI, Iberia, KLM, TAP Air Portugal
Where these flights connect
There is no non-stop flight from London to San Juan. Based on the airlines that fly this route, connections are usually through Madrid, Amsterdam, Lisbon — worth checking when you compare fares.