Flights to Merrimack Valley from Seattle - ￥14,500

View ￥14,500 flight on Wed, Sep 10, 2025Opens in a new window

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Cheap Flights from Seattle to Merrimack Valley (SEA-BOS)

Prices were available within the past 7 days and start at ￥14,500 for one-way flights and ￥31,940 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Nov 1 - Sat, Nov 8
SEA
Seattle
BOS
Boston
￥31,940 Roundtrip, found 5 days ago
￥31,940
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to Boston, returning Sat, Nov 8, priced at ￥31,940 found 5 days ago
Delta
Sat, Nov 1 - Sat, Nov 8
SEA
Seattle
BOS
Boston
￥33,470 Roundtrip, found 5 days ago
￥33,470
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to Boston, returning Sat, Nov 8, priced at ￥33,470 found 5 days ago
Delta
Wed, Oct 8 - Sat, Oct 11
SEA
Seattle
BOS
Boston
￥33,610 Roundtrip, found 12 hours ago
￥33,610
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Oct 8 from Seattle to Boston, returning Sat, Oct 11, priced at ￥33,610 found 12 hours ago
Delta
Sat, Nov 1 - Sat, Nov 8
SEA
Seattle
BOS
Boston
￥34,240 Roundtrip, found 5 days ago
￥34,240
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to Boston, returning Sat, Nov 8, priced at ￥34,240 found 5 days ago
American Airlines
Sat, Nov 1 - Sat, Nov 8
SEA
Seattle
BOS
Boston
￥34,690 Roundtrip, found 5 days ago
￥34,690
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Nov 1 from Seattle to Boston, returning Sat, Nov 8, priced at ￥34,690 found 5 days ago
Hawaiian Airlines
Wed, Nov 5 - Mon, Nov 10
SEA
Seattle
BOS
Boston
￥162,500 Roundtrip, found 6 days ago
￥162,500
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Wed, Nov 5 from Seattle to Boston, returning Mon, Nov 10, priced at ￥162,500 found 6 days ago

Find the cheapest month to fly from Seattle (SEA) to Manchester (MHT)

August is typically the cheapest month to fly

From ￥43,443 - ￥124,449 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.