Cheapest one-way flights from San Juan to London in December from $257

AirHint found the following cheapest one-way flights from San Juan (SJU) to London (LGW) in December 2025 (see full year).

One-Way flights

04 Dec Frontier Airlines
05 Dec Frontier Airlines
03 Dec Frontier Airlines
07 Dec Spirit Airlines
01 Dec Spirit Airlines
16 Dec Avianca
30 Dec Spirit Airlines
31 Dec Spirit Airlines
29 Dec jetBlue
20 Dec Arajet

Also check the deals for return flights from San Juan to London in December.

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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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