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Cheap Flights from Boston to Seattle (BOS - SEA)

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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 BOS to SEA (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $340 2 $399 3 $330 4 $344 5 $330 6 $330
7 $330 8 $330 9 $300 10 $316 11 $296 12 $359 13 $311
14 $330 15 $311 16 $311 17 $300 18 $307 19 $320 20 $303
21 $307 22 $316 23 $307 24 $307 25 $301 26 $307 27 $306
28 $320 29 $296 30 $301        
KAYAK searches hundreds of sites to find the best rate for your next flight from Boston to Seattle. Get the best flight deal for your Seattle trip!
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Direct flights BOS to SEA on Delta
Flight # Depart BOS Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
7519 7:00 am 10:15 am Sep 29 - Oct 7
7519 7:00 am 10:15 am Sep 28 - Oct 1
7519 7:00 am 10:09 am Sep 27 - Sep 27
7519 7:00 am 10:09 am Aug 25 - Sep 26
9238 8:40 am 11:49 am Sep 15 - Sep 22
9238 8:40 am 11:49 am Sep 6 - Sep 13
9238 8:40 am 11:49 am Sep 5 - Sep 9
9238 8:40 am 11:49 am Aug 26 - Sep 4
9238 8:40 am 11:55 am Sep 29 - Oct 4
9238 8:40 am 11:49 am Sep 23 - Sep 27
7482 6:10 pm 9:28 pm Sep 28 - Nov 1
7482 6:10 pm 9:19 pm Sep 5 - Sep 27
7482 6:10 pm 9:19 pm Aug 24 - Sep 4