AirHint found the following cheapest return flights from San Juan (SJU) to London (LHR) in October 2025 (see full year).
Return flights
| 19 Oct - 04 Nov | KLM | ||
| 20 Oct - 04 Nov | KLM | ||
| 19 Oct - 26 Oct | KLM | ||
| 18 Oct - 25 Oct | Lufthansa | ||
| 24 Oct - 27 Oct | Frontier Airlines | ||
| 25 Oct - 27 Oct | Lufthansa | ||
| 19 Oct - 23 Oct | jetBlue | ||
| 16 Oct - 18 Oct | jetBlue |
Also check the deals for one-way flights from San Juan to London in October.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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