Flights from Boulder to Phoenix

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.

Sat, Jul 26 - Tue, Jul 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$88 Roundtrip, found 5 days ago

$88

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jul 26 from Denver Intl. to Sky Harbor Intl., returning Tue, Jul 29, priced at $88 found 5 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$126 Roundtrip, found 2 days ago

$126

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $126 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$133 Roundtrip, found 2 days ago

$133

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $133 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$143 Roundtrip, found 2 days ago

$143

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $143 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$145 Roundtrip, found 2 days ago

$145

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $145 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$146 Roundtrip, found 2 days ago

$146

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $146 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$148 Roundtrip, found 2 days ago

$148

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $148 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$153 Roundtrip, found 2 days ago

$153

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $153 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$162 Roundtrip, found 2 days ago

$162

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $162 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$164 Roundtrip, found 2 days ago

$164

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $164 found 2 days ago

Thu, Jul 24 - Sun, Jul 27

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$165 Roundtrip, found 5 days ago

$165

Roundtrip

found 5 days ago

Select United flight, departing Thu, Jul 24 from Denver Intl. to Sky Harbor Intl., returning Sun, Jul 27, priced at $165 found 5 days ago

Thu, Jul 24 - Sun, Jul 27

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$165 Roundtrip, found 5 days ago

$165

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jul 24 from Denver Intl. to Sky Harbor Intl., returning Sun, Jul 27, priced at $165 found 5 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$168 Roundtrip, found 2 days ago

$168

Roundtrip

found 2 days ago

Select American Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $168 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$168 Roundtrip, found 2 days ago

$168

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $168 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $177 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days ago

Select American Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $177 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$207 Roundtrip, found 2 days ago

$207

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $207 found 2 days ago

Wed, Jun 25 - Sun, Jun 29

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$319 Roundtrip, found 2 days ago

$319

Roundtrip

found 2 days ago

Select Contour Airlines flight, departing Wed, Jun 25 from Denver Intl. to Sky Harbor Intl., returning Sun, Jun 29, priced at $319 found 2 days ago

Thu, Jul 24 - Sun, Jul 27

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$509 Roundtrip, found 5 days ago

$509

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Thu, Jul 24 from Denver Intl. to Sky Harbor Intl., returning Sun, Jul 27, priced at $509 found 5 days ago

Thu, Jul 24 - Sun, Jul 27

DEN

Denver Intl.

PHX

Sky Harbor Intl.

$843 Roundtrip, found 5 days ago

$843

Roundtrip

found 5 days ago

Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 24 from Denver Intl. to Sky Harbor Intl., returning Sun, Jul 27, priced at $843 found 5 days ago