Flights to San Jose from Boulder - ￥12,770

View ￥12,770 flight on Tue, Aug 19, 2025Opens in a new window

Popular airlines from Boulder to San Jose

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boulder to San Jose (DEN-SJC)

Prices were available within the past 7 days and start at ￥12,770 for one-way flights and ￥27,040 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥27,040 Roundtrip, found 6 days ago
￥27,040
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥27,040 found 6 days ago
American Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥29,190 Roundtrip, found 6 days ago
￥29,190
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥29,190 found 6 days ago
American Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥29,930 Roundtrip, found 6 days ago
￥29,930
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥29,930 found 6 days ago
Delta
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥31,340 Roundtrip, found 6 days ago
￥31,340
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥31,340 found 6 days ago
American Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥31,670 Roundtrip, found 6 days ago
￥31,670
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥31,670 found 6 days ago
United
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
￥32,080 Roundtrip, found 6 days ago
￥32,080
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at ￥32,080 found 6 days ago

Find the cheapest month to fly from Denver (DEN) to San Jose (SJC)

March is typically the cheapest month to fly

From ￥8,333 - ￥57,547 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.