Flights from St. Louis to Washington

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, Aug 25 - Wed, Sep 3

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$151 Roundtrip, found 4 days ago

$151

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Wed, Sep 3, priced at $151 found 4 days ago

Thu, Jul 10 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$168 Roundtrip, found 3 days ago

$168

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Fri, Jul 18, priced at $168 found 3 days ago

Mon, Aug 25 - Thu, Aug 28

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$175 Roundtrip, found 4 days ago

$175

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Thu, Aug 28, priced at $175 found 4 days ago

Thu, Jul 10 - Sun, Jul 13

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$178 Roundtrip, found 3 days ago

$178

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sun, Jul 13, priced at $178 found 3 days ago

Thu, Jul 10 - Thu, Jul 17

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$182 Roundtrip, found 3 days ago

$182

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Thu, Jul 17, priced at $182 found 3 days ago

Thu, Aug 28 - Wed, Sep 3

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$188 Roundtrip, found 4 days ago

$188

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Thu, Aug 28 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Wed, Sep 3, priced at $188 found 4 days ago

Thu, Jul 31 - Sun, Aug 3

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$193 Roundtrip, found 6 days ago

$193

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Thu, Jul 31 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 3, priced at $193 found 6 days ago

Thu, Jul 10 - Fri, Jul 11

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$195 Roundtrip, found 3 days ago

$195

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Fri, Jul 11, priced at $195 found 3 days ago

Thu, Aug 28 - Sun, Aug 31

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$204 Roundtrip, found 4 days ago

$204

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Thu, Aug 28 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 31, priced at $204 found 4 days ago

Thu, Jul 10 - Mon, Jul 14

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$208 Roundtrip, found 3 days ago

$208

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Mon, Jul 14, priced at $208 found 3 days ago

Thu, Aug 28 - Sun, Aug 31

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$212 Roundtrip, found 4 days ago

$212

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Thu, Aug 28 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 31, priced at $212 found 4 days ago

Thu, Jul 10 - Sat, Jul 12

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$220 Roundtrip, found 3 days ago

$220

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sat, Jul 12, priced at $220 found 3 days ago

Mon, Aug 25 - Mon, Sep 1

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$222 Roundtrip, found 4 days ago

$222

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Mon, Sep 1, priced at $222 found 4 days ago

Tue, Sep 16 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

ABE

Lehigh Valley Intl.

$224 Roundtrip, found 1 day ago

$224

Roundtrip

found 1 day ago

Select United flight, departing Tue, Sep 16 from Lambert-St. Louis Intl. to Lehigh Valley Intl., returning Sat, Sep 20, priced at $224 found 1 day ago

Thu, Jul 10 - Tue, Jul 15

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$228 Roundtrip, found 3 days ago

$228

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Tue, Jul 15, priced at $228 found 3 days ago

Tue, Sep 16 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

ABE

Lehigh Valley Intl.

$229 Roundtrip, found 1 day ago

$229

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Sep 16 from Lambert-St. Louis Intl. to Lehigh Valley Intl., returning Sat, Sep 20, priced at $229 found 1 day ago

Thu, Jul 10 - Sat, Jul 12

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$231 Roundtrip, found 3 days ago

$231

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sat, Jul 12, priced at $231 found 3 days ago

Thu, Jul 10 - Sat, Jul 12

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$258 Roundtrip, found 3 days ago

$258

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Jul 10 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Sat, Jul 12, priced at $258 found 3 days ago

Tue, Aug 26 - Tue, Sep 2

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$261 Roundtrip, found 4 days ago

$261

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Aug 26 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Tue, Sep 2, priced at $261 found 4 days ago

Mon, Aug 25 - Tue, Sep 2

STL

Lambert-St. Louis Intl.

EWR

Newark Liberty Intl. Airport

$315 Roundtrip, found 4 days ago

$315

Roundtrip

found 4 days ago

Select United flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to Newark Liberty Intl. Airport, returning Tue, Sep 2, priced at $315 found 4 days ago