Flights from St. Louis to Ridley Park

Cheapest flights from St. Louis

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.

Mon, Jul 21 - Sun, Jul 27

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$187 Roundtrip, found 1 hour ago

$187

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sun, Jul 27, priced at $187 found 1 hour ago

Mon, Jul 21 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$197 Roundtrip, found 1 hour ago

$197

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Thu, Jul 24, priced at $197 found 1 hour ago

Fri, Jul 25 - Sun, Jul 27

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$207 Roundtrip, found 1 hour ago

$207

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Fri, Jul 25 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sun, Jul 27, priced at $207 found 1 hour ago

Mon, Jul 21 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$212 Roundtrip, found 1 hour ago

$212

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Mon, Jul 28, priced at $212 found 1 hour ago

Wed, Jul 23 - Sun, Jul 27

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$213 Roundtrip, found 1 hour ago

$213

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Wed, Jul 23 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sun, Jul 27, priced at $213 found 1 hour ago

Wed, Jul 23 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$223 Roundtrip, found 1 hour ago

$223

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Wed, Jul 23 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Thu, Jul 24, priced at $223 found 1 hour ago

Sun, Jul 20 - Sun, Jul 27

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$227 Roundtrip, found 1 hour ago

$227

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sun, Jul 27, priced at $227 found 1 hour ago

Mon, Jul 21 - Tue, Jul 29

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$231 Roundtrip, found 1 hour ago

$231

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Tue, Jul 29, priced at $231 found 1 hour ago

Fri, Jul 25 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$232 Roundtrip, found 1 hour ago

$232

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Fri, Jul 25 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Mon, Jul 28, priced at $232 found 1 hour ago

Sun, Jul 20 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$237 Roundtrip, found 1 hour ago

$237

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Thu, Jul 24, priced at $237 found 1 hour ago

Wed, Jul 23 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$238 Roundtrip, found 1 hour ago

$238

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Wed, Jul 23 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Mon, Jul 28, priced at $238 found 1 hour ago

Fri, Jul 25 - Tue, Jul 29

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$251 Roundtrip, found 1 hour ago

$251

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Fri, Jul 25 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Tue, Jul 29, priced at $251 found 1 hour ago

Sun, Jul 20 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$252 Roundtrip, found 1 hour ago

$252

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Mon, Jul 28, priced at $252 found 1 hour ago

Wed, Jul 23 - Tue, Jul 29

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$257 Roundtrip, found 1 hour ago

$257

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Wed, Jul 23 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Tue, Jul 29, priced at $257 found 1 hour ago

Mon, Jun 23 - Sat, Jun 28

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$270 Roundtrip, found 6 days ago

$270

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Jun 23 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sat, Jun 28, priced at $270 found 6 days ago

Sun, Jul 20 - Tue, Jul 29

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$271 Roundtrip, found 1 hour ago

$271

Roundtrip

found 1 hour ago

Select Spirit Airlines flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Tue, Jul 29, priced at $271 found 1 hour ago

Mon, Jun 30 - Thu, Jul 3

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$274 Roundtrip, found 2 days ago

$274

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Mon, Jun 30 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Thu, Jul 3, priced at $274 found 2 days ago

Tue, Jul 22 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$297 Roundtrip, found 1 hour ago

$297

Roundtrip

found 1 hour ago

Select Delta flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Wed, Jul 23, priced at $297 found 1 hour ago

Tue, Jul 22 - Sat, Jul 26

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$350 Roundtrip, found 1 hour ago

$350

Roundtrip

found 1 hour ago

Select American Airlines flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sat, Jul 26, priced at $350 found 1 hour ago

Tue, Jul 22 - Sat, Jul 26

STL

Lambert-St. Louis Intl.

PHL

Philadelphia Intl.

$378 Roundtrip, found 1 hour ago

$378

Roundtrip

found 1 hour ago

Select United flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Philadelphia Intl., returning Sat, Jul 26, priced at $378 found 1 hour ago