Find Deals on Flights from Seattle/Tacoma Intl to Boston Logan International (SEA - BOS)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to Boston Logan International

(Round-trip)
Depart: Fri May 13 2016 Return: Mon May 16 2016 Trip spans 4 days
Sun Country Air
Sun Country Air
SEA
1:30p
BOS
3:49a
14h 19m
1 stop
BOS
4:55p
SEA
11:07a
18h 12m
1 stop
Depart: Tue May 3 2016 Return: Wed May 4 2016 Trip spans 2 days
JetBlue
JetBlue
SEA
8:26a
BOS
1:36p
5h 10m
nonstop
BOS
3:05a
SEA
9:12a
6h 07m
nonstop
Depart: Tue Jun 7 2016 Return: Mon Jun 13 2016 Trip spans 7 days
Major Airline
Major Airline
SEA
4:10p
BOS
1:30a
9h 20m
1 stop
BOS
3:20a
SEA
3:25p
12h 05m
1 stop
Depart: Sat May 14 2016 Return: Tue May 17 2016 Trip spans 4 days
United
United
SEA
1:53p
BOS
10:47p
8h 54m
1 stop
BOS
1:55a
SEA
10:40a
8h 45m
1 stop
Depart: Sat May 7 2016 Return: Wed May 11 2016 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
11:35a
BOS
4:57p
5h 22m
nonstop
BOS
3:00a
SEA
9:14a
6h 14m
nonstop
Depart: Sat Jun 4 2016 Return: Fri Jun 10 2016 Trip spans 7 days
American Airlines
American Airlines
SEA
1:30p
BOS
11:04p
9h 34m
1 stop
BOS
8:45a
SEA
6:38p
9h 53m
1 stop
Depart: Mon Jun 13 2016 Return: Thu Jun 16 2016 Trip spans 4 days
Virgin America
Virgin America
SEA
1:40p
BOS
12:44a
11h 04m
1 stop
BOS
3:25a
SEA
3:15p
11h 50m
1 stop
Depart: Thu Sep 1 2016 Return: Thu Sep 8 2016 Trip spans 8 days
Delta
Delta
SEA
7:05a
BOS
12:30p
5h 25m
nonstop
BOS
1:30p
SEA
10:00p
8h 30m
1 stop
Depart: Mon May 16 2016 Return: Tue May 17 2016 Trip spans 2 days
Sun Country Air
Sun Country Air
SEA
9:00a
BOS
4:14p
7h 14m
1 stop
BOS
3:00a
SEA
11:07a
8h 07m
1 stop
Depart: Mon May 2 2016 Return: Sat May 7 2016 Trip spans 6 days
JetBlue
JetBlue
SEA
7:02p
BOS
12:09a
5h 07m
nonstop
BOS
3:05a
SEA
9:12a
6h 07m
nonstop
Depart: Fri May 20 2016 Return: Thu Jun 2 2016 Trip spans 14 days
Major Airline
Major Airline
SEA
10:30p
BOS
5:40a
7h 10m
1 stop
BOS
4:45a
SEA
5:20p
12h 35m
1 stop
Depart: Fri Jun 3 2016 Return: Wed Jun 8 2016 Trip spans 6 days
Sun Country Air
Sun Country Air
SEA
1:30p
BOS
3:49a
14h 19m
1 stop
BOS
2:55a
SEA
3:37p
12h 42m
1 stop
Depart: Wed May 18 2016 Return: Tue May 24 2016 Trip spans 7 days
Alaska Airlines
Alaska Airlines
SEA
11:30a
BOS
4:58p
5h 28m
nonstop
BOS
4:10a
SEA
4:07p
11h 57m
1 stop
Depart: Tue May 24 2016 Return: Thu Jun 2 2016 Trip spans 10 days
United
United
SEA
2:25a
BOS
11:04a
8h 39m
1 stop
BOS
1:31a
SEA
9:42a
8h 11m
1 stop
Depart: Sat Sep 24 2016 Return: Sun Sep 25 2016 Trip spans 2 days
American Airlines
American Airlines
SEA
2:00a
BOS
2:06p
12h 06m
1 stop
BOS
1:00a
SEA
9:18a
8h 18m
1 stop
Depart: Wed Aug 10 2016 Return: Sat Aug 20 2016 Trip spans 11 days
Virgin America
Virgin America
SEA
5:50a
BOS
4:25p
10h 35m
1 stop
BOS
7:20a
SEA
7:00p
11h 40m
1 stop
Depart: Tue May 31 2016 Return: Wed Jun 8 2016 Trip spans 9 days
Major Airline
Major Airline
SEA
9:34p
BOS
8:46a
11h 12m
1 stop
BOS
9:55a
SEA
7:39p
9h 44m
1 stop
Depart: Mon Jun 6 2016 Return: Sat Jun 11 2016 Trip spans 6 days
Sun Country Air
Sun Country Air
SEA
9:00a
BOS
4:14p
7h 14m
1 stop
BOS
7:40a
SEA
4:52p
9h 12m
1 stop
Depart: Tue May 17 2016 Return: Wed May 18 2016 Trip spans 2 days
JetBlue
JetBlue
SEA
7:04a
BOS
12:28p
5h 24m
nonstop
BOS
3:05a
SEA
9:12a
6h 07m
nonstop
Depart: Sat May 28 2016 Return: Wed Jun 1 2016 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
11:30a
BOS
4:58p
5h 28m
nonstop
BOS
12:35p
SEA
10:49p
10h 14m
1 stop
Direct flights SEA to BOS on Delta
Flight # Depart SEA Arrive BOS Sun Mon Tue Wed Thu Fri Sat Valid Between
968 11:10 am 7:50 pm May 10 - May 13
968 11:10 am 7:50 pm May 22 - May 22
968 11:10 am 7:50 pm May 21 - May 28
968 11:10 am 7:50 pm May 17 - Jun 3
968 11:10 am 7:50 pm May 16 - Jun 8
968 11:10 am 7:50 pm Jun 5 - Jun 7
968 11:10 am 7:50 pm May 29 - Jun 4
968 11:10 am 7:50 pm May 5 - May 15
968 11:10 am 7:50 pm May 7 - May 14
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

More questions or if you have a bad price to report to us
Please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Seattle
$276
Destination

Boston
$276