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

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Dates, airline, and price
Dates	Airline	Price
17 Sep	Southwest Airlines
16 Sep	United
18 Sep	United
19 Sep	United
20 Sep	United
21 Sep	United
22 Sep	United
24 Sep	United
25 Sep	United
27 Sep	United

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

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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), September

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