Find Cheap Flights from Seattle to Boston Logan International

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 to Boston Logan International

(Round-trip)
Depart: Thu Nov 30 2017 Return: Wed Dec 6 2017 Trip spans 7 days
JetBlue
JetBlue
SEA
12:00a
BOS
5:09a
5h 09m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Tue Dec 5 2017 Return: Sun Dec 10 2017 Trip spans 6 days
Delta
Delta
SEA
12:00a
BOS
5:25a
5h 25m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Tue Sep 12 2017 Return: Sat Sep 16 2017 Trip spans 5 days
Spirit Airlines
Spirit Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
10:19a
10h 19m
1 stop
Depart: Wed Sep 20 2017 Return: Wed Sep 27 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
7:55a
7h 55m
1 stop
Depart: Wed Sep 13 2017 Return: Mon Sep 18 2017 Trip spans 6 days
Sun Country Air
Sun Country Air
SEA
12:00a
BOS
7:50a
7h 50m
1 stop
BOS
12:00a
SEA
7:55a
7h 55m
1 stop
Depart: Fri Dec 1 2017 Return: Wed Dec 6 2017 Trip spans 6 days
JetBlue
JetBlue
SEA
12:00a
BOS
5:11a
5h 11m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Sun Dec 3 2017 Return: Sat Dec 9 2017 Trip spans 7 days
Delta
Delta
SEA
12:00a
BOS
8:16a
8h 16m
1 stop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Sat Dec 2 2017 Return: Fri Dec 8 2017 Trip spans 7 days
JetBlue
JetBlue
SEA
12:00a
BOS
5:09a
5h 09m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Wed Sep 20 2017 Return: Wed Sep 27 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
10:19a
10h 19m
1 stop
Depart: Mon Oct 2 2017 Return: Wed Oct 11 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
SEA
12:00a
BOS
7:50a
7h 50m
1 stop
BOS
12:00a
SEA
10:19a
10h 19m
1 stop
Depart: Mon Dec 4 2017 Return: Sat Dec 9 2017 Trip spans 6 days
JetBlue
JetBlue
SEA
12:00a
BOS
5:09a
5h 09m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Thu Sep 14 2017 Return: Mon Sep 18 2017 Trip spans 5 days
Sun Country Air
Sun Country Air
SEA
12:00a
BOS
7:50a
7h 50m
1 stop
BOS
12:00a
SEA
7:55a
7h 55m
1 stop
Depart: Sat Sep 23 2017 Return: Wed Sep 27 2017 Trip spans 5 days
Spirit Airlines
Spirit Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
10:19a
10h 19m
1 stop
Depart: Wed Oct 11 2017 Return: Mon Oct 16 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
7:55a
7h 55m
1 stop
Depart: Fri Sep 15 2017 Return: Mon Sep 18 2017 Trip spans 4 days
Sun Country Air
Sun Country Air
SEA
12:00a
BOS
2:15p
14h 15m
1 stop
BOS
12:00a
SEA
12:45p
12h 45m
1 stop
Depart: Sun Dec 3 2017 Return: Fri Dec 8 2017 Trip spans 6 days
JetBlue
JetBlue
SEA
12:00a
BOS
5:09a
5h 09m
nonstop
BOS
12:00a
SEA
6:20a
6h 20m
nonstop
Depart: Tue Oct 3 2017 Return: Wed Oct 11 2017 Trip spans 9 days
Spirit Airlines
Spirit Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
10:19a
10h 19m
1 stop
Depart: Fri Oct 6 2017 Return: Sat Oct 14 2017 Trip spans 9 days
Delta
Delta
SEA
12:00a
BOS
5:20a
5h 20m
nonstop
BOS
12:00a
SEA
6:28a
6h 28m
nonstop
Depart: Wed Nov 1 2017 Return: Mon Nov 6 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
SEA
12:00a
BOS
11:54a
11h 54m
1 stop
BOS
12:00a
SEA
8:00a
8h 00m
1 stop
Depart: Sat Sep 16 2017 Return: Mon Sep 18 2017 Trip spans 3 days
Sun Country Air
Sun Country Air
SEA
12:00a
BOS
2:15p
14h 15m
1 stop
BOS
12:00a
SEA
7:55a
7h 55m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

Here's why:

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

We compile tonnes 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 can'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.

If you have 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
$232
Destination

Boston
$232
Airlines Airline reviews

27 travelers who booked a flight from Seattle to Boston rated their chosen airlines with an average of 8.6.

Overall
8.7
Boarding
8.8
Crew
9.1
Comfort
8.5
Food
8.2
Entertainment
8.3