Flights to Merrimack Valley from St. Louis - ￥15,940

View ￥15,940 flight on Fri, Oct 3, 2025Opens in a new window

Popular airlines from St. Louis to Merrimack Valley

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Cheap Flights from St. Louis to Merrimack Valley (STL-BOS)

Prices were available within the past 7 days and start at ￥15,940 for one-way flights and ￥31,770 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥31,770 Roundtrip, found 1 day ago
￥31,770
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥31,770 found 1 day ago
United
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥37,680 Roundtrip, found 1 day ago
￥37,680
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥37,680 found 1 day ago
Delta
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥39,180 Roundtrip, found 1 day ago
￥39,180
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥39,180 found 1 day ago
American Airlines
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥41,950 Roundtrip, found 1 day ago
￥41,950
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥41,950 found 1 day ago
Delta
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥42,160 Roundtrip, found 1 day ago
￥42,160
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥42,160 found 1 day ago
Delta
Fri, Oct 3 - Tue, Oct 7
STL
St. Louis
BOS
Boston
￥42,410 Roundtrip, found 1 day ago
￥42,410
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from St. Louis to Boston, returning Tue, Oct 7, priced at ￥42,410 found 1 day ago

Find the cheapest month to fly from St. Louis (STL) to Manchester (MHT)

August is typically the cheapest month to fly

From ￥27,600 - ￥104,850 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.