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Cheap Flights from Washington to St Louis (IAD - STL)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
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Best fares from IAD to STL (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $376 2 $396 3 $436 4 $442 5 $228 6 $228
7 $398 8 $398 9 $71 10 $267 11 $135 12 $135 13 $125
14 $404 15 $290 16 $105 17 $208 18 $115 19 $280 20 $125
21 $306 22 $283 23 $105 24 $208 25 $135 26 $280 27 $105
28 $286 29 $283 30 $105        
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Direct flights IAD to STL on United
Flight # Depart IAD Arrive STL Sun Mon Tue Wed Thu Fri Sat Valid Between
3420 8:16 am 9:28 am Sep 21 - Oct 19
3420 8:16 am 9:28 am Oct 7 - Oct 7
3420 8:16 am 9:28 am Sep 23 - Sep 30
3420 8:16 am 9:28 am Sep 20 - Oct 25
3420 8:43 am 9:55 am Sep 3 - Sep 17
3420 8:43 am 9:55 am Sep 6 - Sep 13
3420 8:43 am 9:55 am Sep 8 - Sep 19
3357 12:21 pm 1:33 pm Sep 21 - Sep 21
3357 12:21 pm 1:33 pm Sep 28 - Oct 5
3357 12:21 pm 1:33 pm Sep 7 - Sep 14
3357 12:21 pm 1:33 pm Sep 8 - Sep 16
3357 12:21 pm 1:33 pm Sep 18 - Sep 18
3357 12:21 pm 1:33 pm Sep 17 - Sep 19
3357 12:21 pm 1:33 pm Sep 20 - Oct 25
3730 12:21 pm 1:29 pm Sep 22 - Oct 17
3730 12:21 pm 1:29 pm Sep 23 - Oct 21
4129 12:21 pm 1:33 pm Sep 6 - Sep 13
3367 3:35 pm 4:47 pm Sep 19 - Sep 19
3434 4:56 pm 6:08 pm Sep 23 - Oct 14
3434 4:56 pm 6:08 pm Sep 20 - Oct 11
3434 4:56 pm 6:08 pm Sep 21 - Oct 13
3434 5:00 pm 6:12 pm Sep 18 - Sep 18
3434 5:00 pm 6:12 pm Sep 5 - Sep 17
3434 5:04 pm 6:16 pm Sep 7 - Sep 14
3434 5:09 pm 6:21 pm Aug 30 - Sep 13
3434 5:23 pm 6:35 pm Sep 19 - Sep 19
3427 9:50 pm 10:56 pm Sep 22 - Oct 22
3427 9:50 pm 10:56 pm Sep 23 - Oct 21
3427 9:50 pm 10:56 pm Sep 7 - Sep 21
3427 9:57 pm 11:03 pm Aug 27 - Sep 17
3427 9:57 pm 11:03 pm Aug 26 - Sep 19