Flights from Philadelphia to Louisville

Cheapest flights from Philadelphia

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, Sep 27 - Wed, Oct 1

PHL

Philadelphia Intl.

DEN

Denver Intl.

$148 Roundtrip, found 6 days ago

$148

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Sep 27 from Philadelphia Intl. to Denver Intl., returning Wed, Oct 1, priced at $148 found 6 days ago

Wed, Jul 16 - Wed, Jul 23

PHL

Philadelphia Intl.

DEN

Denver Intl.

$163 Roundtrip, found 5 days ago

$163

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Philadelphia Intl. to Denver Intl., returning Wed, Jul 23, priced at $163 found 5 days ago

Mon, Sep 22 - Wed, Oct 1

PHL

Philadelphia Intl.

DEN

Denver Intl.

$168 Roundtrip, found 6 days ago

$168

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Sep 22 from Philadelphia Intl. to Denver Intl., returning Wed, Oct 1, priced at $168 found 6 days ago

Wed, Sep 3 - Sun, Sep 7

PHL

Philadelphia Intl.

DEN

Denver Intl.

$187 Roundtrip, found 1 day ago

$187

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 3 from Philadelphia Intl. to Denver Intl., returning Sun, Sep 7, priced at $187 found 1 day ago

Thu, Jul 17 - Tue, Jul 22

PHL

Philadelphia Intl.

DEN

Denver Intl.

$192 Roundtrip, found 5 days ago

$192

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jul 17 from Philadelphia Intl. to Denver Intl., returning Tue, Jul 22, priced at $192 found 5 days ago

Fri, Aug 22 - Sat, Aug 23

PHL

Philadelphia Intl.

DEN

Denver Intl.

$198 Roundtrip, found 6 days ago

$198

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Aug 22 from Philadelphia Intl. to Denver Intl., returning Sat, Aug 23, priced at $198 found 6 days ago

Wed, Jul 30 - Wed, Aug 6

PHL

Philadelphia Intl.

DEN

Denver Intl.

$200 Roundtrip, found 1 day ago

$200

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jul 30 from Philadelphia Intl. to Denver Intl., returning Wed, Aug 6, priced at $200 found 1 day ago

Thu, Jul 17 - Tue, Jul 22

PHL

Philadelphia Intl.

DEN

Denver Intl.

$201 Roundtrip, found 5 days ago

$201

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jul 17 from Philadelphia Intl. to Denver Intl., returning Tue, Jul 22, priced at $201 found 5 days ago

Fri, Sep 5 - Wed, Sep 10

PHL

Philadelphia Intl.

DEN

Denver Intl.

$202 Roundtrip, found 1 day ago

$202

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to Denver Intl., returning Wed, Sep 10, priced at $202 found 1 day ago

Sat, Aug 23 - Sun, Aug 24

PHL

Philadelphia Intl.

DEN

Denver Intl.

$204 Roundtrip, found 6 days ago

$204

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 23 from Philadelphia Intl. to Denver Intl., returning Sun, Aug 24, priced at $204 found 6 days ago

Wed, Sep 3 - Sun, Sep 7

PHL

Philadelphia Intl.

DEN

Denver Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select United flight, departing Wed, Sep 3 from Philadelphia Intl. to Denver Intl., returning Sun, Sep 7, priced at $207 found 1 day ago

Wed, Jul 30 - Wed, Aug 6

PHL

Philadelphia Intl.

DEN

Denver Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jul 30 from Philadelphia Intl. to Denver Intl., returning Wed, Aug 6, priced at $207 found 1 day ago

Wed, Aug 13 - Thu, Aug 14

PHL

Philadelphia Intl.

DEN

Denver Intl.

$209 Roundtrip, found 1 day ago

$209

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 13 from Philadelphia Intl. to Denver Intl., returning Thu, Aug 14, priced at $209 found 1 day ago

Tue, Jul 29 - Wed, Aug 6

PHL

Philadelphia Intl.

DEN

Denver Intl.

$213 Roundtrip, found 1 day ago

$213

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to Denver Intl., returning Wed, Aug 6, priced at $213 found 1 day ago

Thu, Sep 4 - Thu, Sep 4

PHL

Philadelphia Intl.

DEN

Denver Intl.

$216 Roundtrip, found 1 day ago

$216

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to Denver Intl., returning Thu, Sep 4, priced at $216 found 1 day ago

Thu, Sep 25 - Sat, Oct 4

PHL

Philadelphia Intl.

DEN

Denver Intl.

$217 Roundtrip, found 6 days ago

$217

Roundtrip

found 6 days ago

Select United flight, departing Thu, Sep 25 from Philadelphia Intl. to Denver Intl., returning Sat, Oct 4, priced at $217 found 6 days ago

Thu, Sep 25 - Sat, Oct 4

PHL

Philadelphia Intl.

DEN

Denver Intl.

$217 Roundtrip, found 6 days ago

$217

Roundtrip

found 6 days ago

Select American Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to Denver Intl., returning Sat, Oct 4, priced at $217 found 6 days ago

Sat, Dec 13 - Mon, Jan 5

PHL

Philadelphia Intl.

DEN

Denver Intl.

$229 Roundtrip, found 3 hours ago

$229

Roundtrip

found 3 hours ago

Select JetBlue Airways flight, departing Sat, Dec 13 from Philadelphia Intl. to Denver Intl., returning Mon, Jan 5, priced at $229 found 3 hours ago

Sat, Sep 6 - Sat, Sep 6

PHL

Philadelphia Intl.

DEN

Denver Intl.

$251 Roundtrip, found 1 day ago

$251

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 6 from Philadelphia Intl. to Denver Intl., returning Sat, Sep 6, priced at $251 found 1 day ago

Fri, Jul 11 - Tue, Jul 29

TTN

Mercer

DEN

Denver Intl.

$315 Roundtrip, found 5 days ago

$315

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jul 11 from Mercer to Denver Intl., returning Tue, Jul 29, priced at $315 found 5 days ago