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Find Flight Deals from Washington Dulles Intl to Lambert-St Louis (IAD - STL)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Washington Dulles Intl to Lambert-St Louis

(Round-trip)
Depart: Tue Mar 24 2015 Return: Wed Mar 25 2015 Trip spans 2 days
United
United
IAD
8:30a
STL
10:53a
2h 23m
nonstop
STL
4:35a
IAD
6:32a
1h 57m
nonstop
Depart: Wed Mar 25 2015 Return: Mon Mar 30 2015 Trip spans 6 days
United
United
IAD
6:06p
STL
8:29p
2h 23m
nonstop
STL
7:11a
IAD
9:11a
2h 00m
nonstop
Depart: Wed Apr 8 2015 Return: Thu Apr 16 2015 Trip spans 9 days
United
United
IAD
12:45p
STL
3:06p
2h 21m
nonstop
STL
4:51a
IAD
6:50a
1h 59m
nonstop
Depart: Thu Apr 9 2015 Return: Thu Apr 16 2015 Trip spans 8 days
United
United
IAD
4:16a
STL
6:30a
2h 14m
nonstop
STL
2:36p
IAD
4:38p
2h 02m
nonstop
Depart: Fri Apr 10 2015 Return: Thu Apr 16 2015 Trip spans 7 days
United
United
IAD
6:00p
STL
8:10p
2h 10m
nonstop
STL
4:51a
IAD
6:50a
1h 59m
nonstop
Depart: Sat Apr 11 2015 Return: Thu Apr 16 2015 Trip spans 6 days
United
United
IAD
6:00p
STL
8:10p
2h 10m
nonstop
STL
4:51a
IAD
6:50a
1h 59m
nonstop
Depart: Mon Apr 13 2015 Return: Thu Apr 16 2015 Trip spans 4 days
United
United
IAD
6:00p
STL
8:10p
2h 10m
nonstop
STL
9:25a
IAD
11:25a
2h 00m
nonstop
Depart: Wed Apr 15 2015 Return: Thu Apr 16 2015 Trip spans 2 days
United
United
IAD
4:16a
STL
6:30a
2h 14m
nonstop
STL
9:25a
IAD
11:25a
2h 00m
nonstop
Depart: Thu Apr 23 2015 Return: Mon Apr 27 2015 Trip spans 5 days
United
United
IAD
6:00p
STL
8:10p
2h 10m
nonstop
STL
7:02a
IAD
9:05a
2h 03m
nonstop
Depart: Thu Apr 30 2015 Return: Mon May 4 2015 Trip spans 5 days
United
United
IAD
6:15p
STL
8:25p
2h 10m
nonstop
STL
4:20a
IAD
8:26a
4h 06m
1 stop
Depart: Wed May 27 2015 Return: Mon Jun 1 2015 Trip spans 6 days
United
United
IAD
8:30a
STL
10:45a
2h 15m
nonstop
STL
3:09a
IAD
8:32a
5h 23m
1 stop
Depart: Thu May 28 2015 Return: Mon Jun 1 2015 Trip spans 5 days
United
United
IAD
4:16a
STL
6:31a
2h 15m
nonstop
STL
2:32p
IAD
6:55p
4h 23m
1 stop
Depart: Sat Apr 4 2015 Return: Sat Apr 18 2015 Trip spans 15 days
United
United
IAD
1:06p
STL
3:29p
2h 23m
nonstop
STL
4:51a
IAD
6:50a
1h 59m
nonstop
Depart: Tue Mar 31 2015 Return: Fri Apr 10 2015 Trip spans 11 days
United
United
IAD
8:30a
STL
10:53a
2h 23m
nonstop
STL
7:02a
IAD
9:05a
2h 03m
nonstop
Depart: Tue Apr 14 2015 Return: Wed Apr 15 2015 Trip spans 2 days
United
United
IAD
6:00p
STL
8:10p
2h 10m
nonstop
STL
7:02a
IAD
9:05a
2h 03m
nonstop
Depart: Thu Apr 16 2015 Return: Mon Apr 20 2015 Trip spans 5 days
United
United
IAD
4:16a
STL
6:30a
2h 14m
nonstop
STL
4:51a
IAD
6:50a
1h 59m
nonstop
Depart: Fri Apr 17 2015 Return: Mon Apr 20 2015 Trip spans 4 days
United
United
IAD
4:16a
STL
6:30a
2h 14m
nonstop
STL
7:02a
IAD
9:05a
2h 03m
nonstop
Depart: Mon Apr 20 2015 Return: Tue Apr 21 2015 Trip spans 2 days
Multiple Airlines
Multiple Airlines
IAD
1:55p
STL
5:59p
4h 04m
1 stop
STL
9:25a
IAD
11:25a
2h 00m
nonstop
Depart: Wed Mar 18 2015 Return: Tue Mar 24 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
1:25a
STL
5:46a
4h 21m
1 stop
STL
8:50a
IAD
12:23p
3h 33m
1 stop
Depart: Fri Mar 20 2015 Return: Tue Mar 24 2015 Trip spans 5 days
Delta
Delta
IAD
2:10a
STL
6:31a
4h 21m
1 stop
STL
3:05a
IAD
7:49a
4h 44m
1 stop
Change your search
Direct flights IAD to STL on United
Flight # Depart IAD Arrive STL Sun Mon Tue Wed Thu Fri Sat Valid Between
3420 8:00 am 9:23 am Apr 4 - Apr 4
3420 8:00 am 9:23 am Mar 28 - Mar 28
3420 8:00 am 9:23 am Mar 24 - Mar 24
3420 8:02 am 9:25 am Mar 21 - Mar 21
3420 8:05 am 9:28 am Mar 11 - Mar 11
3420 8:06 am 9:29 am Apr 1 - Apr 1
3420 8:06 am 9:29 am Mar 18 - Mar 25
3420 8:10 am 9:33 am Mar 12 - Mar 27
3420 8:10 am 9:33 am Mar 14 - Mar 14
3420 8:10 am 9:33 am Mar 16 - Mar 23
3420 8:10 am 9:33 am Mar 15 - Mar 22
3420 8:10 am 9:33 am Mar 17 - Mar 17
3420 8:10 am 9:33 am Mar 29 - Apr 3
3420 8:10 am 9:33 am Mar 31 - Apr 5
3420 8:10 am 9:33 am Apr 6 - Apr 6
3420 8:16 am 9:30 am Apr 7 - May 5
3357 12:30 pm 1:53 pm Mar 16 - Mar 23
3357 12:30 pm 1:53 pm Mar 18 - Mar 18
3357 12:30 pm 1:53 pm Mar 15 - Mar 15
3357 12:30 pm 1:53 pm Mar 9 - Mar 13
3357 12:30 pm 1:53 pm Mar 10 - Mar 17
3357 12:30 pm 1:53 pm Mar 28 - Mar 28
3357 12:30 pm 1:53 pm Mar 24 - Mar 31
3357 12:30 pm 1:53 pm Mar 21 - Mar 21
3369 12:30 pm 1:53 pm Mar 30 - Apr 6
3369 12:30 pm 1:53 pm Mar 11 - Mar 11
3357 12:31 pm 1:47 pm Apr 7 - Apr 7
3357 12:31 pm 1:47 pm Apr 8 - Apr 13
3357 12:36 pm 1:59 pm Mar 14 - Mar 14
3357 12:36 pm 1:59 pm Apr 4 - Apr 4
3357 12:36 pm 1:52 pm Apr 11 - Apr 18
3369 4:45 pm 6:08 pm Mar 15 - Mar 27
3369 4:45 pm 6:08 pm Mar 29 - Mar 31
3434 4:45 pm 6:08 pm Mar 30 - Apr 6
3434 4:45 pm 6:08 pm Mar 9 - Mar 13
3434 4:45 pm 6:06 pm Apr 7 - Apr 13
3434 5:05 pm 6:28 pm Mar 14 - Mar 28
3434 5:06 pm 6:29 pm Apr 4 - Apr 4
3427 10:00 pm 11:10 pm Apr 7 - Apr 7
3427 10:00 pm 11:10 pm Apr 8 - Apr 20
3427 10:06 pm 11:29 pm Mar 9 - Mar 28
3427 10:06 pm 11:29 pm Mar 10 - Mar 24
3427 10:06 pm 11:29 pm Mar 29 - Apr 6
3427 10:06 pm 11:29 pm Mar 8 - Mar 27
Airports
Origin

Washington
$227
Destination

St Louis
$227