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.

to Information

Traveling From
Lambert-St. Louis Intl.
Origin Airport
Origin Airport IATA Code
STL
Traveling To
Washington Dulles Intl.
Destination Airport
Destination Airport IATA Code
IAD
Number of Airlines Serving
Average Flight Time
hours mins
Direct Flight Time
hours 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 hour(s) and mins, too.   

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

Choose from 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 International Airport

Hyatt Regency Dulles International Airport

4 out of 5
2300 Dulles Corner Blvd Herndon VA
The price is AU$166 per night from 3 Apr to 4 Apr
AU$166
3 Apr - 4 Apr
includes taxes & fees
Stay at this golf hotel in Hunter Mill. Enjoy free Wi-Fi, breakfast (surcharge) and a free airport shuttle. Our guests praise the helpful staff and the clean ...
8.8/10 Excellent! (1,658 reviews)
just booked a Hotel at Washington IAD with Expedia . Expedia charged me for 1 night a listed amount. At the Hotel 1 hour later I opened up the same Hotel website with Expedia and now it the costs much less incl all Taxes. Rip off !! I chatted with an Expedia agent but he mentioned he can't do anything ...

Reviewed on 24 Mar 2026

Hyatt Regency Dulles International Airport
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$166 per night from 5 Apr to 6 Apr
AU$166
5 Apr - 6 Apr
includes taxes & fees
Stay at this business-friendly hotel in Hunter Mill. Enjoy free breakfast, free Wi-Fi and a free airport shuttle. Our guests praise the breakfast and the helpful ...
8.4/10 Very Good! (2,789 reviews)
Just regular

Reviewed on 24 Mar 2026

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$247 per night from 11 Apr to 12 Apr
AU$247
11 Apr - 12 Apr
includes taxes & fees
Stay at this business-friendly hotel in Sterling. Enjoy an outdoor pool, 2 restaurants and breakfast (surcharge). Our guests praise the helpful staff in their ...
8.4/10 Very Good! (1,000 reviews)
yes

Reviewed on 18 Mar 2026

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.

More Destinations

^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.