Flights from Philadelphia to Sullivan

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.

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$174 Roundtrip, found 1 day ago

$174

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $174 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$187 Roundtrip, found 1 day ago

$187

Roundtrip

found 1 day ago

Select United flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $187 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$191 Roundtrip, found 1 day ago

$191

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $191 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$209 Roundtrip, found 1 day ago

$209

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $209 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$217 Roundtrip, found 1 day ago

$217

Roundtrip

found 1 day ago

Select United flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $217 found 1 day ago

Tue, Aug 12 - Tue, Aug 19

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$217 Roundtrip, found 6 days ago

$217

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Aug 12 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Tue, Aug 19, priced at $217 found 6 days ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$222 Roundtrip, found 1 day ago

$222

Roundtrip

found 1 day ago

Select United flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $222 found 1 day ago

Sat, Aug 16 - Tue, Aug 19

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$231 Roundtrip, found 6 days ago

$231

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Aug 16 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Tue, Aug 19, priced at $231 found 6 days ago

Thu, Sep 25 - Fri, Sep 26

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$231 Roundtrip, found 1 day ago

$231

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $231 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$241 Roundtrip, found 1 day ago

$241

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Thu, Oct 2, priced at $241 found 1 day ago

Sat, Aug 16 - Sat, Aug 16

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$245 Roundtrip, found 6 days ago

$245

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Aug 16 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Sat, Aug 16, priced at $245 found 6 days ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$246 Roundtrip, found 1 day ago

$246

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $246 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$249 Roundtrip, found 1 day ago

$249

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $249 found 1 day ago

Tue, Aug 12 - Sun, Aug 17

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$251 Roundtrip, found 6 days ago

$251

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $251 found 6 days ago

Sun, Sep 21 - Fri, Sep 26

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$256 Roundtrip, found 1 day ago

$256

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Sep 21 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $256 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$257 Roundtrip, found 1 day ago

$257

Roundtrip

found 1 day ago

Select United flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $257 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$259 Roundtrip, found 1 day ago

$259

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $259 found 1 day ago

Thu, Sep 25 - Tue, Sep 30

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$261 Roundtrip, found 1 day ago

$261

Roundtrip

found 1 day ago

Select American Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Tue, Sep 30, priced at $261 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$265 Roundtrip, found 1 day ago

$265

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $265 found 1 day ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia Intl.

STL

Lambert-St. Louis Intl.

$266 Roundtrip, found 1 day ago

$266

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 24 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Sep 29, priced at $266 found 1 day ago