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

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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
from
$485*
Viewed:19 hours ago
Economy
Return:12/24/19
11
from
$462*
Viewed:19 hours ago
Economy
Return:12/25/19
12
from
$471*
Viewed:19 hours ago
Economy
Return:12/26/19
13
from
$476*
Viewed:19 hours ago
Economy
Return:12/27/19
14
from
$462*
Viewed:19 hours ago
Economy
Return:12/28/19
15
from
$476*
Viewed:19 hours ago
Economy
Return:12/29/19
16
from
$462*
Viewed:19 hours ago
Economy
Return:12/30/19
17
from
$440*
Viewed:19 hours ago
Economy
Return:12/31/19
18
from
$389*
Viewed:19 hours ago
Economy
Return:01/01/20
19
from
$411*
Viewed:19 hours ago
Economy
Return:12/26/19
20
from
$425*
Viewed:19 hours ago
Economy
Return:12/27/19
21
from
$389*
Viewed:19 hours ago
Economy
Return:01/04/20
22
from
$299*
Viewed:20 hours ago
Economy
Return:12/28/19
23
from
$285*
Viewed:19 hours ago
Economy
Return:12/30/19
24
from
$263*
Viewed:19 hours ago
Economy
Return:01/07/20
25
from
$263*
Viewed:19 hours ago
Economy
Return:01/01/20
26
from
$334*
Viewed:19 hours ago
Economy
Return:01/09/20
27
from
$522*
Viewed:19 hours ago
Economy
Return:01/10/20
28
from
$368*
Viewed:19 hours ago
Economy
Return:01/04/20
29
from
$443*
Viewed:19 hours ago
Economy
Return:01/05/20
30
from
$390*
Viewed:19 hours ago
Economy
Return:01/06/20
31
from
$311*
Viewed:19 hours ago
Economy
Return:01/14/20
from
$241*
Viewed:19 hours ago
Economy
Return:01/08/20
from
$299*
Viewed:19 hours ago
Economy
Return:01/09/20
from
$313*
Viewed:19 hours ago
Economy
Return:01/10/20
from
$241*
Viewed:19 hours ago
Economy
Return:01/11/20
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: 12/23/19

Return: 12/28/19

Roundtrip
from
$285*
Viewed:30minutesago

Saint Louis (STL)

Washington (IAD)

Depart: 12/21/19

Return: 12/29/19

Roundtrip
from
$425*
Viewed:39minutesago

Saint Louis (STL)

Washington (IAD)

Depart: 12/10/19

Return: 12/11/19

Roundtrip
from
$639*
Viewed:2hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/18/19

Return: 12/26/19

Roundtrip
from
$462*
Viewed:3hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/24/19

Return: 12/29/19

Roundtrip
from
$299*
Viewed:3hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/20/19

Return: 12/27/19

Roundtrip
from
$425*
Viewed:18hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/29/19

Return: 01/05/20

Roundtrip
from
$443*
Viewed:18hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/28/19

Return: 01/04/20

Roundtrip
from
$368*
Viewed:18hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 12/21/19

Return: 12/28/19

Roundtrip
from
$411*
Viewed:18hoursago

Saint Louis (STL)

Washington (IAD)

Depart: 01/01/20

Return: 01/08/20

Roundtrip
from
$241*
Viewed:18hoursago

*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

Monday moderate rain
46°F 12/09/19
Tuesday snow
55°F 12/10/19
Wednesday snow
39°F 12/11/19
Thursday sky is clear
36°F 12/12/19
Friday heavy intensity rain
40°F 12/13/19
Saturday overcast clouds
54°F 12/14/19
Sunday sky is clear
51°F 12/15/19
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