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Cheapest one-way flights from Denver (DEN) to San Jose (SJO), December

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Dates, airline, and price
Dates	Airline	Price
05 Dec	United
31 Dec	United Direct Flight
30 Dec	United
29 Dec	United Direct Flight
10 Dec	Air Canada
30 Dec	United Direct Flight
28 Dec	United Direct Flight
01 Dec	United
05 Dec	United Direct Flight
11 Dec	United Direct Flight

deals for return flights from Denver to San Jose in December.

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Updated Jul 18, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Denver (DEN) to San Jose (SJO), December

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