Flights from St. Louis to St. Leonard

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.

Fri, Jul 4 - Tue, Jul 8

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$224 Roundtrip, found 2 days ago

$224

Roundtrip

found 2 days ago

Select Delta flight, departing Fri, Jul 4 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Tue, Jul 8, priced at $224 found 2 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$239 Roundtrip, found 4 days ago

$239

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $239 found 4 days ago

Wed, Jul 9 - Thu, Jul 10

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$240 Roundtrip, found 2 days ago

$240

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Jul 9 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Thu, Jul 10, priced at $240 found 2 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$249 Roundtrip, found 4 days ago

$249

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $249 found 4 days ago

Fri, Jul 4 - Sun, Jul 13

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$250 Roundtrip, found 2 days ago

$250

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Jul 4 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Sun, Jul 13, priced at $250 found 2 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$253 Roundtrip, found 4 days ago

$253

Roundtrip

found 4 days ago

Select American Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $253 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$263 Roundtrip, found 4 days ago

$263

Roundtrip

found 4 days ago

Select American Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $263 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$265 Roundtrip, found 4 days ago

$265

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $265 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$273 Roundtrip, found 4 days ago

$273

Roundtrip

found 4 days ago

Select American Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $273 found 4 days ago

Thu, Jun 19 - Thu, Jun 19

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$274 Roundtrip, found 4 days ago

$274

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Thu, Jun 19, priced at $274 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$275 Roundtrip, found 4 days ago

$275

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $275 found 4 days ago

Thu, Jun 19 - Mon, Jun 23

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$276 Roundtrip, found 4 days ago

$276

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Mon, Jun 23, priced at $276 found 4 days ago

Thu, Jun 19 - Mon, Jun 23

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$277 Roundtrip, found 4 days ago

$277

Roundtrip

found 4 days ago

Select American Airlines flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Mon, Jun 23, priced at $277 found 4 days ago

Mon, Jul 7 - Sun, Jul 13

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$280 Roundtrip, found 2 days ago

$280

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Jul 7 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Sun, Jul 13, priced at $280 found 2 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$283 Roundtrip, found 4 days ago

$283

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $283 found 4 days ago

Thu, Jun 19 - Mon, Jun 23

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$283 Roundtrip, found 4 days ago

$283

Roundtrip

found 4 days ago

Select American Airlines flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Mon, Jun 23, priced at $283 found 4 days ago

Thu, Jun 19 - Mon, Jun 23

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$286 Roundtrip, found 4 days ago

$286

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Mon, Jun 23, priced at $286 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$287 Roundtrip, found 4 days ago

$287

Roundtrip

found 4 days ago

Select American Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $287 found 4 days ago

Mon, Jun 16 - Wed, Jun 18

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$293 Roundtrip, found 4 days ago

$293

Roundtrip

found 4 days ago

Select United flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Wed, Jun 18, priced at $293 found 4 days ago

Thu, Jun 19 - Mon, Jun 23

STL

Lambert-St. Louis Intl.

DCA

Ronald Reagan Washington National

$295 Roundtrip, found 4 days ago

$295

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Jun 19 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Mon, Jun 23, priced at $295 found 4 days ago