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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 $368 2 $350 3 $350 4 $379
5 $368 6 $347 7 $331 8 $348 9 $348 10 $378 11 $378
12 $348 13 $378 14 $321 15 $312 16 $312 17 $306 18 $332
19 $463 20 $397 21 $296 22 $296 23 $296 24 $296 25 $307
26 $331 27 $306 28 $296 29 $296 30 $296 31 $296  
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 Oct 8 - Oct 27
7519 7:00 am 10:15 am Sep 28 - Oct 1
7519 7:00 am 10:15 am Oct 28 - Nov 1
7519 7:00 am 10:15 am Oct 29 - Oct 31
9238 8:40 am 11:55 am Oct 6 - Nov 1
9238 8:40 am 11:55 am Sep 29 - Oct 4
7482 6:10 pm 9:28 pm Sep 28 - Nov 1