Flights from Denver to Old No. 9 Trail

Cheapest flights from Denver

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.

Thu, Jun 12 - Sat, Jun 14

DEN

Denver Intl.

SAT

San Antonio Intl.

$168 Roundtrip, found 18 hours ago

$168

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Denver Intl. to San Antonio Intl., returning Sat, Jun 14, priced at $168 found 18 hours ago

Sun, Jun 8 - Sat, Jun 14

DEN

Denver Intl.

SAT

San Antonio Intl.

$178 Roundtrip, found 18 hours ago

$178

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sun, Jun 8 from Denver Intl. to San Antonio Intl., returning Sat, Jun 14, priced at $178 found 18 hours ago

Thu, Jun 12 - Thu, Jun 19

DEN

Denver Intl.

SAT

San Antonio Intl.

$186 Roundtrip, found 18 hours ago

$186

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Denver Intl. to San Antonio Intl., returning Thu, Jun 19, priced at $186 found 18 hours ago

Tue, Jun 10 - Tue, Jun 10

DEN

Denver Intl.

SAT

San Antonio Intl.

$191 Roundtrip, found 18 hours ago

$191

Roundtrip

found 18 hours ago

Select Delta flight, departing Tue, Jun 10 from Denver Intl. to San Antonio Intl., returning Tue, Jun 10, priced at $191 found 18 hours ago

Sun, Jun 8 - Thu, Jun 12

DEN

Denver Intl.

SAT

San Antonio Intl.

$196 Roundtrip, found 18 hours ago

$196

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sun, Jun 8 from Denver Intl. to San Antonio Intl., returning Thu, Jun 12, priced at $196 found 18 hours ago

Sun, Jun 8 - Sun, Jun 15

DEN

Denver Intl.

SAT

San Antonio Intl.

$206 Roundtrip, found 18 hours ago

$206

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sun, Jun 8 from Denver Intl. to San Antonio Intl., returning Sun, Jun 15, priced at $206 found 18 hours ago

Fri, Jun 6 - Sat, Jun 14

DEN

Denver Intl.

SAT

San Antonio Intl.

$209 Roundtrip, found 18 hours ago

$209

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, Jun 6 from Denver Intl. to San Antonio Intl., returning Sat, Jun 14, priced at $209 found 18 hours ago

Wed, Jun 11 - Sat, Jun 14

DEN

Denver Intl.

SAT

San Antonio Intl.

$210 Roundtrip, found 18 hours ago

$210

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Denver Intl. to San Antonio Intl., returning Sat, Jun 14, priced at $210 found 18 hours ago

Sun, Jun 8 - Tue, Jun 10

DEN

Denver Intl.

SAT

San Antonio Intl.

$217 Roundtrip, found 18 hours ago

$217

Roundtrip

found 18 hours ago

Select Delta flight, departing Sun, Jun 8 from Denver Intl. to San Antonio Intl., returning Tue, Jun 10, priced at $217 found 18 hours ago

Mon, Jun 9 - Sat, Jun 14

DEN

Denver Intl.

SAT

San Antonio Intl.

$220 Roundtrip, found 18 hours ago

$220

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Denver Intl. to San Antonio Intl., returning Sat, Jun 14, priced at $220 found 18 hours ago

Fri, Jun 6 - Thu, Jun 12

DEN

Denver Intl.

SAT

San Antonio Intl.

$227 Roundtrip, found 18 hours ago

$227

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, Jun 6 from Denver Intl. to San Antonio Intl., returning Thu, Jun 12, priced at $227 found 18 hours ago

Wed, Jun 11 - Thu, Jun 12

DEN

Denver Intl.

SAT

San Antonio Intl.

$228 Roundtrip, found 18 hours ago

$228

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Denver Intl. to San Antonio Intl., returning Thu, Jun 12, priced at $228 found 18 hours ago

Sat, Jun 7 - Sat, Jun 7

DEN

Denver Intl.

SAT

San Antonio Intl.

$229 Roundtrip, found 18 hours ago

$229

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Jun 7 from Denver Intl. to San Antonio Intl., returning Sat, Jun 7, priced at $229 found 18 hours ago

Sat, Jun 7 - Mon, Jun 9

DEN

Denver Intl.

SAT

San Antonio Intl.

$233 Roundtrip, found 18 hours ago

$233

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Jun 7 from Denver Intl. to San Antonio Intl., returning Mon, Jun 9, priced at $233 found 18 hours ago

Mon, Jun 9 - Wed, Jun 11

DEN

Denver Intl.

SAT

San Antonio Intl.

$234 Roundtrip, found 17 hours ago

$234

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Denver Intl. to San Antonio Intl., returning Wed, Jun 11, priced at $234 found 17 hours ago

Mon, Jun 9 - Thu, Jun 12

DEN

Denver Intl.

SAT

San Antonio Intl.

$237 Roundtrip, found 18 hours ago

$237

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Mon, Jun 9 from Denver Intl. to San Antonio Intl., returning Thu, Jun 12, priced at $237 found 18 hours ago

Fri, Jun 6 - Sun, Jun 15

DEN

Denver Intl.

SAT

San Antonio Intl.

$237 Roundtrip, found 18 hours ago

$237

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, Jun 6 from Denver Intl. to San Antonio Intl., returning Sun, Jun 15, priced at $237 found 18 hours ago

Fri, Jun 6 - Tue, Jun 10

DEN

Denver Intl.

SAT

San Antonio Intl.

$240 Roundtrip, found 18 hours ago

$240

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Fri, Jun 6 from Denver Intl. to San Antonio Intl., returning Tue, Jun 10, priced at $240 found 18 hours ago

Fri, Jun 6 - Mon, Jun 9

DEN

Denver Intl.

SAT

San Antonio Intl.

$244 Roundtrip, found 18 hours ago

$244

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Fri, Jun 6 from Denver Intl. to San Antonio Intl., returning Mon, Jun 9, priced at $244 found 18 hours ago

Mon, Jun 9 - Wed, Jun 11

DEN

Denver Intl.

SAT

San Antonio Intl.

$291 Roundtrip, found 17 hours ago

$291

Roundtrip

found 17 hours ago

Select United flight, departing Mon, Jun 9 from Denver Intl. to San Antonio Intl., returning Wed, Jun 11, priced at $291 found 17 hours ago