Cheapest return flights from San Diego to Denver in January from 59€

AirHint found the following cheapest return flights from San Diego (SAN) to Denver (DEN) in January 2026 (see full year).

Return flights

30 Jan - 06 Feb Frontier Airlines direct
30 Jan - 02 Feb Frontier Airlines direct
30 Jan - 01 Feb Frontier Airlines direct
28 Jan - 30 Jan Frontier Airlines direct
28 Jan - 31 Jan Frontier Airlines direct
27 Jan - 31 Jan Frontier Airlines direct
22 Jan - 26 Jan Frontier Airlines direct
26 Jan - 29 Jan Frontier Airlines direct
23 Jan - 27 Jan Frontier Airlines direct
26 Jan - 28 Jan Frontier Airlines direct
20 Jan - 30 Jan Frontier Airlines direct
19 Jan - 29 Jan Frontier Airlines direct
20 Jan - 29 Jan Frontier Airlines direct

Also check the deals for one-way flights from San Diego to Denver in January.

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