$221 Cheap United flights St. Louis (STL) to Boston (BOS)

$221 Cheap United flights St. Louis (STL) to Boston (BOS)

Prices were available within the past 7 days and start at $221 for one-way flights and $359 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 3 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$359 Roundtrip, found 1 day ago

$359

Roundtrip

found 1 day ago

Select United flight, departing Sun, Aug 3 from St. Louis to Boston, returning Wed, Aug 13, priced at $359 found 1 day ago

Sun, Aug 3 - Wed, Aug 13

STL

St. Louis

BOS

Boston

$375 Roundtrip, found 1 day ago

$375

Roundtrip

found 1 day ago

Select United flight, departing Sun, Aug 3 from St. Louis to Boston, returning Wed, Aug 13, priced at $375 found 1 day ago