Cheap flights from Seattle to Merrimack Valley

View AU$145 flight on Mon, 10 Nov. 2025Opens in a new window

Popular airlines from Seattle to Merrimack Valley

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 10 Sep. - Mon, 15 Sep.
SEA
Seattle
BOS
Boston
AU$345 Return, found 1 hour ago
AU$345
Return
found 1 hour ago
Select Alaska Airlines flight, departing Wed, 10 Sep. from Seattle to Boston, returning Mon, 15 Sep., priced at AU$345 found 1 hour ago
Alaska Airlines
Sat, 13 Sep. - Sat, 20 Sep.
SEA
Seattle
BOS
Boston
AU$379 Return, found 1 day ago
AU$379
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 13 Sep. from Seattle to Boston, returning Sat, 20 Sep., priced at AU$379 found 1 day ago
Delta
Sat, 13 Sep. - Sat, 20 Sep.
SEA
Seattle
BOS
Boston
AU$380 Return, found 1 day ago
AU$380
Return
found 1 day ago
Select Delta flight, departing Sat, 13 Sep. from Seattle to Boston, returning Sat, 20 Sep., priced at AU$380 found 1 day ago
American Airlines
Sat, 13 Sep. - Sat, 20 Sep.
SEA
Seattle
BOS
Boston
AU$380 Return, found 1 day ago
AU$380
Return
found 1 day ago
Select American Airlines flight, departing Sat, 13 Sep. from Seattle to Boston, returning Sat, 20 Sep., priced at AU$380 found 1 day ago
United
Sat, 13 Sep. - Sat, 20 Sep.
SEA
Seattle
BOS
Boston
AU$425 Return, found 1 day ago
AU$425
Return
found 1 day ago
Select United flight, departing Sat, 13 Sep. from Seattle to Boston, returning Sat, 20 Sep., priced at AU$425 found 1 day ago
Hawaiian Airlines
Sat, 16 Aug. - Tue, 26 Aug.
SEA
Seattle
BOS
Boston
AU$582 Return, found 6 days ago
AU$582
Return
found 6 days ago
Select Hawaiian Airlines flight, departing Sat, 16 Aug. from Seattle to Boston, returning Tue, 26 Aug., priced at AU$582 found 6 days ago

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

September is typically the cheapest month to fly

From AU$455 - AU$1,059 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.