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Cheap Flights From St. Louis, Missouri To Washington, D.C.

St. Louis
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Airfare Details for flights from St. Louis to Washington, D.C.

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Sorry this deal is over or has been sold out! But here’s another great Airfarewatchdog verified fare for this route!

$322 RT flight from St. Louis to Washington, D.C. (STL-IAD)

  • Airline(s):
    Southwest
  • Seats are:
    Limited Availability
  • Available for travel:
    Exc Fri/Sun
  • More Details:
    No Min. Stay, Fare Can Be Bought One-way For Half The Lowest Roundtrip Price, Travel Between Aug. 26 - Dec. 18, 2013
  • Last Updated:
    Tuesday, June 18, 2013
  • Our Notes:
    Blackout dates apply: Sept. 2 and Nov. 26 - Dec. 3. Fare only available on Southwest.com Do not use the fare calendar below to find seats at this fare. ...moreOnly use the Southwest link shown.
All mandatory taxes/fees are included in the price. Tax-inclusive fare may be a few dollars higher or lower depending on the airport you connect through, if any. Baggage fees, if applicable, and other optional fees are not included.

Our Dealhounds found this airfare using flexible date search. This means we searched a range of dates to find you the best price.

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Reviews for St. Louis to Washington, D.C. (STL-IAD)

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Sample Fares found by other travelers within the past 72 hours
Price From/To Depart/Return Airline
$393 Flight from St. Louis to Dulles (STL-IAD) Fri, Jun 21 - Tue, Jul 2 US Airways
$393 Flight from St. Louis to Dulles (STL-IAD) Fri, Jun 21 - Mon, Jul 1 US Airways
$393 Flight from St. Louis to Dulles (STL-IAD) Thu, Jun 20 - Fri, Jul 12 United Airlines
$393 Flight from St. Louis to Dulles (STL-IAD) Thu, Jun 20 - Thu, Jul 11 United Airlines
$407 Flight from St. Louis to Dulles (STL-IAD) Fri, Jun 21 - Wed, Jul 3 US Airways
$437 Flight from St. Louis to Dulles (STL-IAD) Thu, Jun 20 - Thu, Jun 27 US Airways
$487 Flight from St. Louis to Dulles (STL-IAD) Sun, Jun 23 - Fri, Jul 19 United Airlines
$501 Flight from St. Louis to Dulles (STL-IAD) Fri, Jun 21 - Sun, Jun 23 US Airways
$501 Flight from St. Louis to Dulles (STL-IAD) Wed, Jun 19 - Wed, Jun 19 US Airways
$595 Flight from St. Louis to Dulles (STL-IAD) Sat, Jun 22 - Sun, Jun 30 United Airlines
There are approximately 297 flights covering the route from Lambert-St. Louis International Airport in St. Louis to Dulles International Airport in Washington, D.C., provided by as many as 8 airlines.

The following airlines sometimes offer nonstop cheap flights from St. Louis to Washington, D.C.:

Transwest Air

As an alternative to flying from St. Louis, you may also want to try searching for cheap flights from Columbia (COU).
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