SEARCH ONE AND DONE. - Compare hundreds of travel sites at once.
Choose where to book.
Find deals from over 400 airlines worldwide.

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.
Choose Sites to Compare vs. KAYAK

Best fares from SEA to IAD (Found by others)

Sun Mon Tue Wed Thu Fri Sat
          1 $598 2 $505
3 $596 4 $543 5 $472 6 $469 7 $467 8 $522 9 $705
10 $508 11 $426 12 $434 13 $542 14 $525 15 $526 16 $651
17 $687 18 $595 19 $481 20 $471 21 $417 22 $494 23 $640
24 $613 25 $494 26 $406 27 $462 28 $440 29 $481 30 $446
31 $502            
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!
Here's how it works. Search KAYAK for a flight ticket from Seattle to Washington. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
511 6:50 am 2:40 pm Aug 3 - Aug 17
1020 7:00 am 2:55 pm Aug 11 - Aug 18
419 7:00 am 2:50 pm Aug 2 - Aug 16
511 7:00 am 2:50 pm Aug 1 - Aug 15
511 7:00 am 2:50 pm Aug 6 - Aug 13
511 7:00 am 2:50 pm Aug 14 - Aug 14
360 8:00 am 3:53 pm Sep 5 - Sep 19
511 8:00 am 3:53 pm Aug 22 - Aug 29
1196 8:04 am 4:02 pm Sep 7 - Sep 7
1685 8:04 am 4:02 pm Aug 31 - Aug 31
360 8:04 am 4:00 pm Aug 24 - Aug 24
1054 8:10 am 4:08 pm Aug 23 - Aug 23
1627 8:10 am 4:08 pm Aug 21 - Aug 25
1627 8:10 am 4:08 pm Sep 4 - Sep 18
1627 8:10 am 4:08 pm Sep 2 - Sep 2
1627 8:10 am 4:08 pm Aug 26 - Aug 26
360 8:10 am 4:03 pm Sep 6 - Sep 13
419 8:10 am 4:03 pm Aug 19 - Aug 19
511 8:10 am 4:03 pm Aug 30 - Sep 3
511 8:10 am 4:06 pm Aug 20 - Aug 27
511 8:10 am 4:06 pm Aug 28 - Aug 28
1709 1:04 pm 9:06 pm Sep 3 - Sep 3
262 1:05 pm 9:05 pm Aug 24 - Aug 24
262 1:05 pm 9:05 pm Sep 7 - Sep 14
1709 1:06 pm 9:08 pm Aug 26 - Aug 26
1709 1:06 pm 9:08 pm Aug 19 - Aug 19
1054 1:07 pm 9:09 pm Aug 30 - Sep 13
1189 1:07 pm 9:09 pm Aug 31 - Aug 31
1403 1:07 pm 9:09 pm Aug 23 - Aug 23
1755 1:09 pm 9:08 pm Aug 16 - Aug 16
260 1:09 pm 9:06 pm Aug 13 - Aug 13
260 1:09 pm 9:06 pm Aug 9 - Aug 9
260 1:09 pm 9:03 pm Aug 3 - Aug 17
319 1:09 pm 9:06 pm Aug 15 - Aug 15
419 1:09 pm 9:06 pm Aug 4 - Aug 11
260 1:10 pm 9:10 pm Aug 20 - Sep 1
260 1:10 pm 9:10 pm Aug 21 - Aug 29
260 1:10 pm 9:10 pm Sep 2 - Sep 5
260 1:10 pm 9:10 pm Sep 8 - Sep 15
799 1:11 pm 9:08 pm Aug 12 - Aug 12
319 1:12 pm 9:09 pm Aug 1 - Aug 8
419 1:12 pm 9:09 pm Aug 18 - Aug 18
419 1:12 pm 9:09 pm Aug 14 - Aug 14
1275 10:17 pm 6:10 am Sep 6 - Sep 6
1666 10:17 pm 6:10 am Sep 8 - Sep 8
1666 10:17 pm 6:10 am Sep 2 - Sep 5
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 1 - Sep 1
1755 10:17 pm 6:10 am Sep 4 - Sep 4
1236 10:27 pm 6:20 am Aug 20 - Aug 20
1236 10:27 pm 6:20 am Aug 27 - Aug 27
1275 10:27 pm 6:20 am Aug 22 - Aug 22
1666 10:27 pm 6:20 am Aug 29 - Aug 29
1666 10:27 pm 6:20 am Aug 19 - Aug 28
1709 10:27 pm 6:20 am Aug 31 - Aug 31
1709 10:27 pm 6:20 am Aug 24 - Aug 24
1755 10:27 pm 6:20 am Aug 23 - Aug 30
1532 10:41 pm 6:32 am Aug 15 - Aug 15
1532 10:41 pm 6:32 am Aug 8 - Aug 8
1532 10:41 pm 6:32 am Aug 12 - Aug 12
262 10:41 pm 6:32 am Aug 3 - Aug 17
262 10:41 pm 6:27 am Aug 4 - Aug 18
1192 10:46 pm 6:37 am Aug 9 - Aug 16