Cheapest one-way flights from St. Thomas to San Juan in December from 123€

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

One-Way flights

21 Dec jetBlue direct
28 Dec Spirit Airlines
15 Dec Cape Air direct
08 Dec Spirit Airlines
07 Dec Cape Air
11 Dec Cape Air direct
08 Dec Cape Air direct
07 Dec Cape Air direct
10 Dec Contour Airlines
10 Dec Cape Air direct

Also check the deals for return flights from St. Thomas to San Juan 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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