Flights from San Antonio to Niwot

Cheapest flights from San Antonio

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.

Tue, Aug 12 - Sat, Aug 16

SAT

San Antonio Intl.

DEN

Denver Intl.

$87 Roundtrip, found 2 days ago

$87

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from San Antonio Intl. to Denver Intl., returning Sat, Aug 16, priced at $87 found 2 days ago

Thu, Aug 14 - Sat, Aug 16

SAT

San Antonio Intl.

DEN

Denver Intl.

$92 Roundtrip, found 2 days ago

$92

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from San Antonio Intl. to Denver Intl., returning Sat, Aug 16, priced at $92 found 2 days ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$95 Roundtrip, found 17 hours ago

$95

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $95 found 17 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$107 Roundtrip, found 17 hours ago

$107

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $107 found 17 hours ago

Fri, Sep 26 - Sat, Oct 4

SAT

San Antonio Intl.

DEN

Denver Intl.

$115 Roundtrip, found 19 hours ago

$115

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Fri, Sep 26 from San Antonio Intl. to Denver Intl., returning Sat, Oct 4, priced at $115 found 19 hours ago

Sat, Sep 27 - Sun, Oct 5

SAT

San Antonio Intl.

DEN

Denver Intl.

$129 Roundtrip, found 17 hours ago

$129

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Sun, Oct 5, priced at $129 found 17 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$132 Roundtrip, found 17 hours ago

$132

Roundtrip

found 17 hours ago

Select United flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $132 found 17 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$147 Roundtrip, found 17 hours ago

$147

Roundtrip

found 17 hours ago

Select American Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $147 found 17 hours ago

Fri, Sep 26 - Sun, Oct 5

SAT

San Antonio Intl.

DEN

Denver Intl.

$150 Roundtrip, found 17 hours ago

$150

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, Sep 26 from San Antonio Intl. to Denver Intl., returning Sun, Oct 5, priced at $150 found 17 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$152 Roundtrip, found 17 hours ago

$152

Roundtrip

found 17 hours ago

Select Delta flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $152 found 17 hours ago

Tue, Aug 12 - Sun, Aug 17

SAT

San Antonio Intl.

DEN

Denver Intl.

$159 Roundtrip, found 2 days ago

$159

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from San Antonio Intl. to Denver Intl., returning Sun, Aug 17, priced at $159 found 2 days ago

Sat, Sep 27 - Mon, Sep 29

SAT

San Antonio Intl.

DEN

Denver Intl.

$162 Roundtrip, found 17 hours ago

$162

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Mon, Sep 29, priced at $162 found 17 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$162 Roundtrip, found 17 hours ago

$162

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $162 found 17 hours ago

Sat, Aug 16 - Sun, Aug 17

SAT

San Antonio Intl.

DEN

Denver Intl.

$164 Roundtrip, found 2 days ago

$164

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from San Antonio Intl. to Denver Intl., returning Sun, Aug 17, priced at $164 found 2 days ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$167 Roundtrip, found 17 hours ago

$167

Roundtrip

found 17 hours ago

Select United flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $167 found 17 hours ago

Fri, Sep 26 - Sat, Oct 4

SAT

San Antonio Intl.

DEN

Denver Intl.

$169 Roundtrip, found 19 hours ago

$169

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Fri, Sep 26 from San Antonio Intl. to Denver Intl., returning Sat, Oct 4, priced at $169 found 19 hours ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$172 Roundtrip, found 17 hours ago

$172

Roundtrip

found 17 hours ago

Select United flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $172 found 17 hours ago

Tue, Aug 12 - Wed, Aug 20

SAT

San Antonio Intl.

DEN

Denver Intl.

$178 Roundtrip, found 2 days ago

$178

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from San Antonio Intl. to Denver Intl., returning Wed, Aug 20, priced at $178 found 2 days ago

Sat, Sep 27 - Thu, Oct 2

SAT

San Antonio Intl.

DEN

Denver Intl.

$182 Roundtrip, found 17 hours ago

$182

Roundtrip

found 17 hours ago

Select American Airlines flight, departing Sat, Sep 27 from San Antonio Intl. to Denver Intl., returning Thu, Oct 2, priced at $182 found 17 hours ago

Fri, Sep 26 - Mon, Sep 29

SAT

San Antonio Intl.

DEN

Denver Intl.

$183 Roundtrip, found 17 hours ago

$183

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, Sep 26 from San Antonio Intl. to Denver Intl., returning Mon, Sep 29, priced at $183 found 17 hours ago