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Cheap Flights from Seattle to Washington (SEA - IAD)

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 SEA to IAD (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $550 2 $466 3 $400 4 $350 5 $400 6 $462
7 $535 8 $260 9 $350 10 $382 11 $398 12 $472 13 $462
14 $519 15 $459 16 $350 17 $350 18 $380 19 $373 20 $439
21 $472 22 $400 23 $400 24 $368 25 $350 26 $400 27 $433
28 $459 29 $384 30 $300        
KAYAK searches hundreds of sites to find the best rate for your next flight from Seattle to Washington. Get the best flight deal for your Washington trip!
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Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
419 7:57 am 3:52 pm Sep 24 - Sep 24
511 7:57 am 3:52 pm Sep 20 - Sep 27
360 8:00 am 3:53 pm Sep 5 - Sep 19
511 8:00 am 3:53 pm Aug 22 - Aug 29
1627 8:03 am 4:03 pm Sep 23 - Sep 23
511 8:03 am 3:58 pm Sep 22 - Sep 29
511 8:03 am 4:03 pm Sep 21 - Sep 28
511 8:03 am 3:58 pm Sep 26 - Sep 26
1196 8:04 am 4:02 pm Sep 7 - Sep 7
1676 8:04 am 4:02 pm Sep 14 - Sep 14
1685 8:04 am 4:02 pm Aug 31 - Aug 31
1627 8:10 am 4:08 pm Sep 2 - Sep 2
1627 8:10 am 4:08 pm Sep 4 - Sep 18
1704 8:10 am 4:08 pm Sep 9 - Sep 16
360 8:10 am 4:03 pm Sep 6 - Sep 13
511 8:10 am 4:03 pm Sep 10 - Sep 17
511 8:10 am 4:03 pm Aug 30 - Sep 3
260 1:03 pm 9:03 pm Sep 25 - Sep 25
360 1:03 pm 9:03 pm Sep 22 - Sep 29
360 1:03 pm 9:03 pm Sep 23 - Sep 30
419 1:03 pm 9:03 pm Sep 26 - Sep 26
1247 1:04 pm 9:06 pm Sep 21 - Sep 21
1247 1:04 pm 9:06 pm Sep 28 - Sep 28
1709 1:04 pm 9:06 pm Sep 3 - Sep 3
262 1:05 pm 9:05 pm Sep 7 - Sep 14
1054 1:07 pm 9:09 pm Aug 30 - Sep 13
1189 1:07 pm 9:09 pm Aug 31 - Aug 31
234 1:07 pm 9:07 pm Sep 20 - Oct 25
1627 1:10 pm 9:12 pm Sep 19 - Sep 19
1709 1:10 pm 9:12 pm Sep 9 - Sep 16
260 1:10 pm 9:10 pm Sep 2 - Sep 5
260 1:10 pm 9:10 pm Aug 21 - Aug 29
260 1:10 pm 9:10 pm Sep 8 - Sep 15
260 1:10 pm 9:10 pm Aug 25 - Sep 1
260 1:10 pm 9:10 pm Sep 11 - Sep 18
260 1:10 pm 9:07 pm Sep 17 - Sep 17
798 1:10 pm 9:10 pm Sep 24 - Sep 24
1271 10:17 pm 6:10 am Sep 17 - Sep 17
1275 10:17 pm 6:10 am Sep 6 - Sep 6
1275 10:17 pm 6:10 am Sep 13 - Sep 13
1403 10:17 pm 6:10 am Sep 16 - Sep 16
1403 10:17 pm 6:10 am Sep 9 - Sep 9
1666 10:17 pm 6:10 am Sep 15 - Sep 19
1666 10:17 pm 6:10 am Sep 18 - Sep 18
1666 10:17 pm 6:10 am Sep 2 - Sep 2
1666 10:17 pm 6:10 am Sep 5 - Sep 11
1666 10:17 pm 6:10 am Sep 12 - Sep 12
1666 10:17 pm 6:10 am Sep 8 - Sep 8
1666 10:17 pm 6:10 am Sep 3 - Sep 3
1709 10:17 pm 6:10 am Sep 7 - Sep 7
1709 10:17 pm 6:10 am Sep 14 - Sep 14
1709 10:17 pm 6:10 am Sep 1 - Sep 1
1755 10:17 pm 6:10 am Sep 10 - Sep 10
1755 10:17 pm 6:10 am Sep 4 - Sep 4
1666 10:27 pm 6:20 am Aug 29 - Aug 29
1709 10:27 pm 6:20 am Aug 31 - Aug 31
1755 10:27 pm 6:20 am Aug 23 - Aug 30
1246 11:20 pm 7:13 am Sep 25 - Sep 25
1246 11:20 pm 7:13 am Sep 26 - Sep 26
1246 11:20 pm 7:13 am Sep 23 - Sep 30
1246 11:20 pm 7:13 am Sep 22 - Sep 29
1627 11:20 pm 7:13 am Sep 24 - Sep 24
1025 11:25 pm 7:18 am Sep 21 - Sep 21
1287 11:25 pm 7:18 am Sep 28 - Sep 28