Skip to content

Get United's best fares today on flights from Saint Louis to Washington from

Select journey type

Enter to select travel class and passengers

Low fare calendar for flights from Saint Louis (STL) to Washington (IAD)

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
No available fares
21
from
$322*
Viewed:7 hours ago
Economy
Return date11/24/19
22
No available fares
23
No available fares
24
from
$434*
Viewed:19 hours ago
Economy
Return date11/27/19
25
from
$425*
Viewed:5 hours ago
Economy
Return date12/02/19
26
from
$335*
Viewed:19 hours ago
Economy
Return date11/30/19
27
from
$434*
Viewed:6 hours ago
Economy
Return date12/01/19
28
No available fares
29
No available fares
30
from
$405*
Viewed:19 hours ago
Economy
Return date12/04/19
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from Saint Louis to Washington?

FromToDatesFare TypePrice

Saint Louis (STL)

Washington (IAD)

Depart: 12/26/19

12/29/19

Roundtrip
from
$348*

Saint Louis (STL)

Washington (IAD)

Depart: 12/21/19

01/03/20

Roundtrip
from
$312*
Viewed:20minutesago

Saint Louis (STL)

Washington (IAD)

Depart: 12/05/19

12/09/19

Roundtrip
from
$602*
Viewed:1hourago

Saint Louis (STL)

Washington (IAD)

Depart: 12/01/19

12/05/19

Roundtrip
from
$540*
Viewed:1hourago

Saint Louis (STL)

Washington (IAD)

Depart: 12/28/19

01/04/20

Roundtrip
from
$352*
Viewed:1hourago

Saint Louis (STL)

Washington (IAD)

Depart: 12/31/19

01/05/20

Roundtrip
from
$287*
Viewed:3hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 01/24/20

01/26/20

Roundtrip
from
$313*
Viewed:3hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 11/25/19

12/02/19

Roundtrip
from
$425*
Viewed:4hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 11/27/19

12/01/19

Roundtrip
from
$434*
Viewed:5hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 02/16/20

03/01/20

Roundtrip
from
$313*
Viewed:12hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Washington

Tuesday few clouds
53°F 11/19/19
Wednesday broken clouds
47°F 11/20/19
Thursday sky is clear
44°F 11/21/19
Friday moderate rain
52°F 11/22/19
Saturday moderate rain
40°F 11/23/19
Sunday sky is clear
40°F 11/24/19
Monday sky is clear
42°F 11/25/19
Powered by: OpenWeatherMap.org