$365 Cheap United flights St. Louis (STL) to Boston (BOS)

$365 Cheap United flights St. Louis (STL) to Boston (BOS)

Prices were available within the past 7 days and start at $365 for one-way flights and $455 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 29 - Wed, Nov 5

STL

St. Louis

BOS

Boston

$455 Roundtrip, found 1 day ago

$455

Roundtrip

found 1 day ago

Select United flight, departing Wed, Oct 29 from St. Louis to Boston, returning Wed, Nov 5, priced at $455 found 1 day ago

Wed, Oct 29 - Tue, Nov 4

STL

St. Louis

BOS

Boston

$511 Roundtrip, found 1 day ago

$511

Roundtrip

found 1 day ago

Select United flight, departing Wed, Oct 29 from St. Louis to Boston, returning Tue, Nov 4, priced at $511 found 1 day ago