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
Sat, 27 Sep. - Sat, 4 Oct.
SEA
Seattle
BOS
Boston
AU$330 Return, found 23 hours ago
AU$330
Return
found 23 hours ago
Select Alaska Airlines flight, departing Sat, 27 Sep. from Seattle to Boston, returning Sat, 4 Oct., priced at AU$330 found 23 hours ago
Alaska Airlines
Sat, 27 Sep. - Sat, 4 Oct.
SEA
Seattle
BOS
Boston
AU$331 Return, found 23 hours ago
AU$331
Return
found 23 hours ago
Select Alaska Airlines flight, departing Sat, 27 Sep. from Seattle to Boston, returning Sat, 4 Oct., priced at AU$331 found 23 hours ago
Alaska Airlines
Wed, 10 Sep. - Mon, 15 Sep.
SEA
Seattle
BOS
Boston
AU$345 Return, found 1 day ago
AU$345
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 10 Sep. from Seattle to Boston, returning Mon, 15 Sep., priced at AU$345 found 1 day ago
American Airlines
Sat, 27 Sep. - Sat, 4 Oct.
SEA
Seattle
BOS
Boston
AU$360 Return, found 23 hours ago
AU$360
Return
found 23 hours ago
Select American Airlines flight, departing Sat, 27 Sep. from Seattle to Boston, returning Sat, 4 Oct., priced at AU$360 found 23 hours ago
Delta
Sat, 27 Sep. - Sat, 4 Oct.
SEA
Seattle
BOS
Boston
AU$376 Return, found 23 hours ago
AU$376
Return
found 23 hours ago
Select Delta flight, departing Sat, 27 Sep. from Seattle to Boston, returning Sat, 4 Oct., priced at AU$376 found 23 hours ago
United
Sat, 27 Sep. - Sat, 4 Oct.
SEA
Seattle
BOS
Boston
AU$422 Return, found 23 hours ago
AU$422
Return
found 23 hours ago
Select United flight, departing Sat, 27 Sep. from Seattle to Boston, returning Sat, 4 Oct., priced at AU$422 found 23 hours 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.