Flights from Boulder to San Jose

Cheapest flights from Boulder

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 8 - Mon, Aug 11

DEN

Denver Intl.

SFO

San Francisco Intl.

$138 Roundtrip, found 4 days ago

$138

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Denver Intl. to San Francisco Intl., returning Mon, Aug 11, priced at $138 found 4 days ago

Tue, Jul 8 - Tue, Jul 15

DEN

Denver Intl.

SFO

San Francisco Intl.

$157 Roundtrip, found 3 days ago

$157

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 8 from Denver Intl. to San Francisco Intl., returning Tue, Jul 15, priced at $157 found 3 days ago

Tue, Jul 8 - Tue, Jul 15

DEN

Denver Intl.

SFO

San Francisco Intl.

$167 Roundtrip, found 3 days ago

$167

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 8 from Denver Intl. to San Francisco Intl., returning Tue, Jul 15, priced at $167 found 3 days ago

Tue, Aug 12 - Tue, Aug 19

DEN

Denver Intl.

SFO

San Francisco Intl.

$174 Roundtrip, found 5 days ago

$174

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Denver Intl. to San Francisco Intl., returning Tue, Aug 19, priced at $174 found 5 days ago

Wed, Jun 25 - Tue, Jul 1

DEN

Denver Intl.

SFO

San Francisco Intl.

$178 Roundtrip, found 21 hours ago

$178

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 1, priced at $178 found 21 hours ago

Tue, Aug 12 - Fri, Aug 15

DEN

Denver Intl.

SFO

San Francisco Intl.

$179 Roundtrip, found 5 days ago

$179

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Denver Intl. to San Francisco Intl., returning Fri, Aug 15, priced at $179 found 5 days ago

Tue, Jul 8 - Tue, Jul 15

DEN

Denver Intl.

SFO

San Francisco Intl.

$187 Roundtrip, found 3 days ago

$187

Roundtrip

found 3 days ago

Select Delta flight, departing Tue, Jul 8 from Denver Intl. to San Francisco Intl., returning Tue, Jul 15, priced at $187 found 3 days ago

Thu, Jun 19 - Tue, Jun 24

DEN

Denver Intl.

SFO

San Francisco Intl.

$188 Roundtrip, found 3 days ago

$188

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Jun 19 from Denver Intl. to San Francisco Intl., returning Tue, Jun 24, priced at $188 found 3 days ago

Tue, Aug 12 - Sat, Aug 16

DEN

Denver Intl.

SFO

San Francisco Intl.

$190 Roundtrip, found 5 days ago

$190

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Denver Intl. to San Francisco Intl., returning Sat, Aug 16, priced at $190 found 5 days ago

Fri, Aug 15 - Mon, Aug 18

DEN

Denver Intl.

SFO

San Francisco Intl.

$195 Roundtrip, found 5 days ago

$195

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from Denver Intl. to San Francisco Intl., returning Mon, Aug 18, priced at $195 found 5 days ago

Tue, Jul 8 - Tue, Jul 15

DEN

Denver Intl.

SFO

San Francisco Intl.

$197 Roundtrip, found 3 days ago

$197

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 8 from Denver Intl. to San Francisco Intl., returning Tue, Jul 15, priced at $197 found 3 days ago

Wed, Jun 18 - Tue, Jun 24

DEN

Denver Intl.

SFO

San Francisco Intl.

$200 Roundtrip, found 3 days ago

$200

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 18 from Denver Intl. to San Francisco Intl., returning Tue, Jun 24, priced at $200 found 3 days ago

Thu, Aug 14 - Tue, Aug 19

DEN

Denver Intl.

SFO

San Francisco Intl.

$201 Roundtrip, found 5 days ago

$201

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Denver Intl. to San Francisco Intl., returning Tue, Aug 19, priced at $201 found 5 days ago

Wed, Jun 25 - Tue, Jul 1

DEN

Denver Intl.

SFO

San Francisco Intl.

$206 Roundtrip, found 21 hours ago

$206

Roundtrip

found 21 hours ago

Select United flight, departing Wed, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 1, priced at $206 found 21 hours ago

Wed, Jun 18 - Sat, Jun 21

DEN

Denver Intl.

SFO

San Francisco Intl.

$206 Roundtrip, found 3 days ago

$206

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 18 from Denver Intl. to San Francisco Intl., returning Sat, Jun 21, priced at $206 found 3 days ago

Wed, Jun 25 - Tue, Jul 1

DEN

Denver Intl.

SFO

San Francisco Intl.

$207 Roundtrip, found 21 hours ago

$207

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Wed, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 1, priced at $207 found 21 hours ago

Wed, Jun 25 - Tue, Jul 1

DEN

Denver Intl.

SFO

San Francisco Intl.

$210 Roundtrip, found 21 hours ago

$210

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 1, priced at $210 found 21 hours ago

Tue, Jun 24 - Tue, Jun 24

DEN

Denver Intl.

SFO

San Francisco Intl.

$217 Roundtrip, found 3 days ago

$217

Roundtrip

found 3 days ago

Select Delta flight, departing Tue, Jun 24 from Denver Intl. to San Francisco Intl., returning Tue, Jun 24, priced at $217 found 3 days ago

Wed, Jun 25 - Tue, Jul 1

DEN

Denver Intl.

SFO

San Francisco Intl.

$217 Roundtrip, found 21 hours ago

$217

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Wed, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 1, priced at $217 found 21 hours ago

Fri, Aug 15 - Mon, Aug 18

DEN

Denver Intl.

SFO

San Francisco Intl.

$256 Roundtrip, found 5 days ago

$256

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Fri, Aug 15 from Denver Intl. to San Francisco Intl., returning Mon, Aug 18, priced at $256 found 5 days ago