Book United Seattle to Boston flight deals from $239

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Search flights from Seattle to Boston (SEA - BOS)

September

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Tuesday 11th

Return Wednesday 26th
from$ 244*Viewed: 34 minutes ago

Tuesday 18th

Return Wednesday 3rd
from$ 244*Viewed: 34 minutes ago

Friday 28th

Return Saturday 13th
from$ 257*Viewed: 34 minutes ago

October

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Tuesday 2nd

Return Wednesday 17th
from$ 244*Viewed: 34 minutes ago

Tuesday 23rd

Return Wednesday 7th
from$ 244*Viewed: 34 minutes ago

Tuesday 30th

Return Wednesday 14th
from$ 239*Viewed: 34 minutes ago

November

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Wednesday 7th

Return Thursday 22nd
from$ 257*Viewed: 34 minutes ago

Tuesday 13th

Return Wednesday 28th
from$ 257*Viewed: 34 minutes ago

Wednesday 14th

Return Thursday 29th
from$ 252*Viewed: 34 minutes ago
**Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply..
Downtown Boston viewed from the harbor

Plan ahead for flights from Seattle to Boston

from
to
Type
Dates
Price*
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 30 Oct 2018
Return Wed 14 Nov 2018
from$ 239*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 11 Sep 2018
Return Wed 26 Sep 2018
from$ 244*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 18 Sep 2018
Return Wed 3 Oct 2018
from$ 244*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 2 Oct 2018
Return Wed 17 Oct 2018
from$ 244*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 9 Oct 2018
Return Wed 24 Oct 2018
from$ 244*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 23 Oct 2018
Return Wed 7 Nov 2018
from$ 244*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Tue 16 Oct 2018
Return Wed 31 Oct 2018
from$ 248*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Wed 10 Oct 2018
Return Thu 25 Oct 2018
from$ 252*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Wed 24 Oct 2018
Return Thu 8 Nov 2018
from$ 252*Viewed: 34 minutes ago
Seattle (SEA)
to Boston (BOS)
Roundtrip
Depart Wed 14 Nov 2018
Return Thu 29 Nov 2018
from$ 252*Viewed: 34 minutes ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Boston

66 °FSaturday08/18/2018
66 °FSunday08/19/2018
68 °FMonday08/20/2018
77 °FTuesday08/21/2018
80 °FWednesday08/22/2018
75 °FThursday08/23/2018
77 °FFriday08/24/2018
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