-->
Skip to content

United flights from Washington, D.C. to Saint Louis starting at

Select journey type

Enter to select travel class and passengers

Book with confidence with United

Low fare calendar for flights from Washington, D.C. (IAD) to Saint Louis (STL)

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
1
2
3
4
5
6
7
8
9
10
11
12
13
from
$233 Price subject to changes
Viewed:19 hours ago
Economy
Return:
14
from
$247 Price subject to changes
Viewed:19 hours ago
Economy
Return:
15
from
$223 Price subject to changes
Viewed:11 hours ago
Economy
Return:
16
from
$237 Price subject to changes
Viewed:19 hours ago
Economy
Return:
17
from
$223 Price subject to changes
Viewed:19 hours ago
Economy
Return:
18
from
$223 Price subject to changes
Viewed:19 hours ago
Economy
Return:
19
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
20
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
21
from
$183 Price subject to changes
Viewed:19 hours ago
Economy
Return:
22
from
$173 Price subject to changes
Viewed:19 hours ago
Economy
Return:
23
from
$183 Price subject to changes
Viewed:19 hours ago
Economy
Return:
24
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
25
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
26
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
27
from
$149 Price subject to changes
Viewed:19 hours ago
Economy
Return:
28
from
$177 Price subject to changes
Viewed:19 hours ago
Economy
Return:
29
from
$157 Price subject to changes
Viewed:19 hours ago
Economy
Return:
30
from
$163 Price subject to changes
Viewed:14 hours ago
Economy
Return:
31
from
$149 Price subject to changes
Viewed:8 hours ago
Economy
Return:
from
$149 Price subject to changes
Viewed:8 hours ago
Economy
Return:
from
$149 Price subject to changes
Viewed:8 hours ago
Economy
Return:
from
$149 Price subject to changes
Viewed:8 hours ago
Economy
Return:
from
$177 Price subject to changes
Viewed:8 hours ago
Economy
Return:
from
$157 Price subject to changes
Viewed:8 hours ago
Economy
Return:
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.

More United deals on Washington, D.C. (IAD) to Saint Louis (STL) flights

FromToDatesFare TypePrice

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/12/20

Return: 10/26/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/13/20

Return: 10/27/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/14/20

Return: 10/28/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/15/20

Return: 10/29/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/19/20

Return: 11/02/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/20/20

Return: 11/03/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/21/20

Return: 11/04/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/22/20

Return: 11/05/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/26/20

Return: 11/09/20

Roundtrip
from
$149*
Viewed:18hoursago

Washington, D.C. (IAD)

Saint Louis (STL)

Depart: 10/27/20

Return: 11/10/20

Roundtrip
from
$149*
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 Saint Louis

Thursday light rain
77°F 08/13/20
Friday sky is clear
84°F 08/14/20
Saturday light rain
86°F 08/15/20
Sunday sky is clear
79°F 08/16/20
Monday sky is clear
78°F 08/17/20
Tuesday light rain
75°F 08/18/20
Wednesday sky is clear
80°F 08/19/20
Powered by: OpenWeatherMap.org