Cheapest one-way flights from Denver to San Juan in January from 122€

AirHint found the following cheapest one-way flights from Denver (DEN) to San Juan (SJU) in January 2026 (see full year).

One-Way flights

21 Jan Frontier Airlines
13 Jan Frontier Airlines
22 Jan Frontier Airlines
10 Jan Frontier Airlines
20 Jan Frontier Airlines
14 Jan Frontier Airlines
20 Jan United direct
21 Jan United direct
22 Jan United direct

Also check the deals for return flights from Denver to San Juan in January.

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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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