Flights from Washington to Mehlville

Cheapest flights from Washington

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.

Thu, Aug 14 - Thu, Aug 21

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$169 Roundtrip, found 6 days ago

$169

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $169 found 6 days ago

Sun, Aug 17 - Thu, Aug 21

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$178 Roundtrip, found 6 days ago

$178

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sun, Aug 17 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $178 found 6 days ago

Fri, Jul 4 - Sat, Jul 5

DCA

Ronald Reagan Washington National

STL

Lambert-St. Louis Intl.

$199 Roundtrip, found 2 hours ago

$199

Roundtrip

found 2 hours ago

Select Delta flight, departing Fri, Jul 4 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Sat, Jul 5, priced at $199 found 2 hours ago

Sat, Aug 16 - Wed, Aug 20

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$210 Roundtrip, found 6 days ago

$210

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Aug 20, priced at $210 found 6 days ago

Sat, Aug 16 - Mon, Aug 18

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$211 Roundtrip, found 6 days ago

$211

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, Aug 18, priced at $211 found 6 days ago

Sun, Aug 17 - Wed, Aug 20

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$220 Roundtrip, found 6 days ago

$220

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Aug 20, priced at $220 found 6 days ago

Sun, Aug 17 - Mon, Aug 18

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$221 Roundtrip, found 6 days ago

$221

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, Aug 18, priced at $221 found 6 days ago

Fri, Jul 4 - Wed, Jul 9

DCA

Ronald Reagan Washington National

STL

Lambert-St. Louis Intl.

$224 Roundtrip, found 2 hours ago

$224

Roundtrip

found 2 hours ago

Select Delta flight, departing Fri, Jul 4 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Wed, Jul 9, priced at $224 found 2 hours ago

Tue, Aug 12 - Tue, Aug 19

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$229 Roundtrip, found 6 days ago

$229

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Aug 12 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Tue, Aug 19, priced at $229 found 6 days ago

Tue, Aug 12 - Thu, Aug 14

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$230 Roundtrip, found 6 days ago

$230

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Aug 14, priced at $230 found 6 days ago

Sat, Jul 5 - Mon, Jul 7

IAD

Washington Dulles Intl.

STL

Lambert-St. Louis Intl.

$240 Roundtrip, found 2 hours ago

$240

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $240 found 2 hours ago

Sun, Jul 6 - Tue, Jul 8

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$240 Roundtrip, found 2 hours ago

$240

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sun, Jul 6 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Tue, Jul 8, priced at $240 found 2 hours ago

Thu, Jul 3 - Mon, Jul 7

DCA

Ronald Reagan Washington National

STL

Lambert-St. Louis Intl.

$249 Roundtrip, found 2 hours ago

$249

Roundtrip

found 2 hours ago

Select United flight, departing Thu, Jul 3 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $249 found 2 hours ago

Sun, Jul 6 - Thu, Jul 10

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$250 Roundtrip, found 2 hours ago

$250

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sun, Jul 6 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Jul 10, priced at $250 found 2 hours ago

Thu, Jul 3 - Mon, Jul 7

DCA

Ronald Reagan Washington National

STL

Lambert-St. Louis Intl.

$253 Roundtrip, found 2 hours ago

$253

Roundtrip

found 2 hours ago

Select American Airlines flight, departing Thu, Jul 3 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $253 found 2 hours ago

Thu, Jul 3 - Mon, Jul 7

IAD

Washington Dulles Intl.

STL

Lambert-St. Louis Intl.

$255 Roundtrip, found 2 hours ago

$255

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jul 3 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $255 found 2 hours ago

Wed, Jul 2 - Thu, Jul 10

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$260 Roundtrip, found 2 hours ago

$260

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Wed, Jul 2 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Jul 10, priced at $260 found 2 hours ago

Thu, Jul 3 - Mon, Jul 7

IAD

Washington Dulles Intl.

STL

Lambert-St. Louis Intl.

$265 Roundtrip, found 2 hours ago

$265

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jul 3 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $265 found 2 hours ago

Sat, Jul 5 - Sat, Jul 5

DCA

Ronald Reagan Washington National

STL

Lambert-St. Louis Intl.

$268 Roundtrip, found 2 hours ago

$268

Roundtrip

found 2 hours ago

Select Delta flight, departing Sat, Jul 5 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Sat, Jul 5, priced at $268 found 2 hours ago

Thu, Aug 14 - Fri, Aug 15

BWI

Baltimore Washington Intl. Thurgood Marshall

STL

Lambert-St. Louis Intl.

$307 Roundtrip, found 6 days ago

$307

Roundtrip

found 6 days ago

Select United flight, departing Thu, Aug 14 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Fri, Aug 15, priced at $307 found 6 days ago