Cheap Flights from Seattle to Boston (SEA - BOS)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youth
12-17
Child
2-11
Seat Infant
under 2
Lap Infant
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none

Best fares from SEA to BOS

Sun Mon Tue Wed Thu Fri Sat
  1 $368 2 $368 3 $320 4 $320 5 $320 6 $320
7 $320 8 $320 9 $286 10 $286 11 $290 12 $287 13 $285
14 $320 15 $285 16 $322 17 $389 18 $377 19 $600 20 $574
21 $477 22 $389 23 $477 24 $339 25 $349 26 $387 27 $415
28 $415 29 $413 30 $377 31 $376      

Best fares found by others...

KAYAK searches hundreds of sites to find the best rate for your next flight from Seattle to Boston. Get the best flight deal for your Boston trip!
Here's how it works. Search KAYAK for a flight ticket from Seattle to Boston. 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 BOS on Delta
Flight # Depart SEA Arrive BOS Sun Mon Tue Wed Thu Fri Sat Valid Between
9069 9:20 am 5:39 pm Dec 7 - Jan 10
9069 9:20 am 5:38 pm Dec 6 - Dec 6
9069 9:20 am 5:38 pm Dec 4 - Dec 5
7512 10:05 pm 6:17 am Dec 3 - Dec 5
7512 10:05 pm 6:20 am Dec 7 - Dec 19
7512 10:05 pm 6:20 am Dec 20 - Jan 4
7512 10:10 pm 6:25 am Jan 5 - Feb 6