$251 Cheap United flights Boston (BOS) to St. Louis (STL)

$251 Cheap United flights Boston (BOS) to St. Louis (STL)

Prices were available within the past 7 days and start at $251 for one-way flights and $542 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 5 - Sat, Nov 8

BOS

Boston

STL

St. Louis

$542 Roundtrip, found 1 day ago

$542

Roundtrip

found 1 day ago

Select United flight, departing Wed, Nov 5 from Boston to St. Louis, returning Sat, Nov 8, priced at $542 found 1 day ago

Tue, Nov 4 - Wed, Nov 5

BOS

Boston

STL

St. Louis

$543 Roundtrip, found 1 day ago

$543

Roundtrip

found 1 day ago

Select United flight, departing Tue, Nov 4 from Boston to St. Louis, returning Wed, Nov 5, priced at $543 found 1 day ago

Tue, Nov 4 - Wed, Nov 5

BOS

Boston

STL

St. Louis

$583 Roundtrip, found 1 day ago

$583

Roundtrip

found 1 day ago

Select United flight, departing Tue, Nov 4 from Boston to St. Louis, returning Wed, Nov 5, priced at $583 found 1 day ago

Mon, Nov 3 - Wed, Nov 12

BOS

Boston

STL

St. Louis

$599 Roundtrip, found 1 day ago

$599

Roundtrip

found 1 day ago

Select United flight, departing Mon, Nov 3 from Boston to St. Louis, returning Wed, Nov 12, priced at $599 found 1 day ago

Tue, Nov 4 - Wed, Nov 5

BOS

Boston

STL

St. Louis

$626 Roundtrip, found 1 day ago

$626

Roundtrip

found 1 day ago

Select United flight, departing Tue, Nov 4 from Boston to St. Louis, returning Wed, Nov 5, priced at $626 found 1 day ago

Tue, Nov 4 - Wed, Nov 5

BOS

Boston

STL

St. Louis

$636 Roundtrip, found 1 day ago

$636

Roundtrip

found 1 day ago

Select United flight, departing Tue, Nov 4 from Boston to St. Louis, returning Wed, Nov 5, priced at $636 found 1 day ago

Mon, Nov 3 - Sat, Nov 8

BOS

Boston

STL

St. Louis

$655 Roundtrip, found 1 day ago

$655

Roundtrip

found 1 day ago

Select United flight, departing Mon, Nov 3 from Boston to St. Louis, returning Sat, Nov 8, priced at $655 found 1 day ago