Flights from St. Louis (STL) to Washington (IAD)

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St. Louis to Washington Flight Information

Find the Cheapest Flights from St. Louis (STL) to Washington (IAD)

Work hard, travel harder! Wotif brings you the cheapest St. Louis to Washington flights, making it possible to have a five star holiday without that five star price tag. Browse and compare our top STL to IAD routes and airport options. So, go ahead and treat yourself, your sweetheart, or the kids to an unforgettable holiday this year.

St. Louis to Chantilly Information

Traveling From
Lambert-St. Louis Intl.
Origin Airport
St. Louis
Origin Airport IATA Code
STL
Traveling To
Washington Dulles Intl.
Destination Airport
Chantilly
Destination Airport IATA Code
IAD
Number of Airlines Serving
5
Average Flight Time
2 hours 8 mins
Direct Flight Time
2 hours 8 mins
Flight Price
Address:
1 Saarinen Circle
Dulles VA, 20166
United States
IATA code:
IAD
Longitude:
-77.447735
Latitude:
38.95315
Time zone:
America/New_York
Address:
10701 Lambert International Blvd.
Saint Louis MO, 63145
United States
IATA code:
STL
Longitude:
-90.379002
Latitude:
38.748707
Time zone:
America/Chicago

St. Louis to Washington Flight Deals from

Considering a quick trip to Washington, but not sure which is the best route for you? Well, you’re in luck! Wotif has done the hard work, so all you need to do is check out these flights from STL to IAD. With heaps of cheap fares from St. Louis, we guarantee you’ll be arriving to your holiday destination in style without emptying your bank account in the process.

It’s easy to book flights to Washington from St. Louis  

For a huge choice of flights, simply enter your travel dates and hit search and we’ll hunt out fantastic deals on one-way, return and multi-city airfares to Washington from St. Louis from different airlines. If you click the ‘direct flights’ box, you see flights that’ll get you to Washington in just 2 hour(s) and 8 mins, too.   

Snap up great deals on flights to Washington from St. Louis 

Choose from 7 flights a day on average, with prices starting at and rising to depending on the cabin class, travel dates, and airline carrier. And if you’re up for a last-minute getaway, you can get great deals on flights from St. Louis to Washington today!  

Find cheap airfares to Washington from St. Louis 

Here are our insider tips for bagging a flight bargain: 

  • Look for midweek flights and late night, early morning arrival and departure times
  • Check out other airports near St. Louis and Washington
  • Avoid peak season (prices tend to be lower in )
  • Be flexible with your travel dates and you can usually get cheaper options  

Reasons to book your flights to Washington from St. Louis with Wotif

Wotif is a super-easy way to find the best flight for you to Washington. Get more bang for your buck on flight and hotel or car rental combos and download the free Wotif app to tap into exclusive deals. Book now with Wotif and have a great flight!

 

Great places to stay after flight from St. Louis to Washington

Hyatt Regency Dulles
Hyatt Regency Dulles
4 out of 5
2300 Dulles Corner Blvd, Herndon, VA
The price is AU$222 per night from 10 July to 11 July
AU$222
10 July - 11 July
includes taxes & fees
Book a stay at this golf hotel in Herndon. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean ...
8.8/10 Excellent! (1,320 reviews)
"Quiet and clean, friendly staff"

Reviewed on 6 Jul. 2025

Hyatt Regency Dulles
Hyatt Place Herndon Dulles Airport East
Hyatt Place Herndon Dulles Airport East
3 out of 5
13711 Sayward Blvd, Herndon, VA
The price is AU$177 per night from 10 July to 11 July
AU$177
10 July - 11 July
includes taxes & fees
Stay at this 3-star business-friendly hotel in Herndon. Enjoy free breakfast, free WiFi, and a free airport shuttle. Our guests praise the breakfast and the ...
8.4/10 Very Good! (2,255 reviews)
"I went with my family for 4th July fireworks and then the next day to Dulles airport to catch my flight and this place is at great reach and lovely ..clean safe secured and well maintained"

Reviewed on 5 Jul. 2025

Hyatt Place Herndon Dulles Airport East
Washington Dulles Airport Marriott
Washington Dulles Airport Marriott
4 out of 5
45020 Aviation Dr, Sterling, VA
The price is AU$250 per night from 25 July to 26 July
AU$250
25 July - 26 July
includes taxes & fees
Stay at this 4-star business-friendly hotel in Sterling. Enjoy an outdoor pool, 2 restaurants, and breakfast (surcharge). Our guests praise the helpful staff ...
8.2/10 Very Good! (1,001 reviews)
"Excellent"

Reviewed on 18 Jun. 2025

Washington Dulles Airport Marriott
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

^Savings based on all package bookings made with Flight + Hotel on Wotif.com from , as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.