$139 Cheap United flights Boston (BOS) to St. Louis (STL)

$139 Cheap United flights Boston (BOS) to St. Louis (STL)

Prices were available within the past 7 days and start at $139 for one-way flights and $413 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$413 Roundtrip, found 16 hours ago

$413

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $413 found 16 hours ago

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$444 Roundtrip, found 16 hours ago

$444

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $444 found 16 hours ago

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$453 Roundtrip, found 16 hours ago

$453

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $453 found 16 hours ago

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$461 Roundtrip, found 16 hours ago

$461

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $461 found 16 hours ago

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$484 Roundtrip, found 16 hours ago

$484

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $484 found 16 hours ago

Thu, Jun 19 - Sun, Jun 22

BOS

Boston

STL

St. Louis

$493 Roundtrip, found 16 hours ago

$493

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Jun 19 from Boston to St. Louis, returning Sun, Jun 22, priced at $493 found 16 hours ago