Flights from St. Louis to Boise

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 1 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

BOI

Boise

$245 Roundtrip, found 19 hours ago

$245

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Wed, Oct 1 from Lambert-St. Louis Intl. to Boise, returning Sun, Oct 5, priced at $245 found 19 hours ago

Thu, Oct 2 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

BOI

Boise

$265 Roundtrip, found 19 hours ago

$265

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to Boise, returning Sun, Oct 5, priced at $265 found 19 hours ago

Wed, Oct 1 - Thu, Oct 9

STL

Lambert-St. Louis Intl.

BOI

Boise

$275 Roundtrip, found 19 hours ago

$275

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Wed, Oct 1 from Lambert-St. Louis Intl. to Boise, returning Thu, Oct 9, priced at $275 found 19 hours ago

Tue, Sep 30 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$279 Roundtrip, found 19 hours ago

$279

Roundtrip

found 19 hours ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $279 found 19 hours ago

Tue, Sep 30 - Wed, Oct 8

STL

Lambert-St. Louis Intl.

BOI

Boise

$279 Roundtrip, found 19 hours ago

$279

Roundtrip

found 19 hours ago

Select Delta flight, departing Tue, Sep 30 from Lambert-St. Louis Intl. to Boise, returning Wed, Oct 8, priced at $279 found 19 hours ago

Sat, Oct 4 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$283 Roundtrip, found 19 hours ago

$283

Roundtrip

found 19 hours ago

Select Alaska Airlines flight, departing Sat, Oct 4 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $283 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$283 Roundtrip, found 19 hours ago

$283

Roundtrip

found 19 hours ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $283 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$283 Roundtrip, found 19 hours ago

$283

Roundtrip

found 19 hours ago

Select American Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $283 found 19 hours ago

Thu, Oct 2 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

BOI

Boise

$287 Roundtrip, found 19 hours ago

$287

Roundtrip

found 19 hours ago

Select Delta flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to Boise, returning Sat, Oct 4, priced at $287 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$298 Roundtrip, found 19 hours ago

$298

Roundtrip

found 19 hours ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $298 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$302 Roundtrip, found 19 hours ago

$302

Roundtrip

found 19 hours ago

Select American Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $302 found 19 hours ago

Tue, Sep 30 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

BOI

Boise

$302 Roundtrip, found 19 hours ago

$302

Roundtrip

found 19 hours ago

Select Hawaiian Airlines flight, departing Tue, Sep 30 from Lambert-St. Louis Intl. to Boise, returning Sun, Oct 5, priced at $302 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$303 Roundtrip, found 19 hours ago

$303

Roundtrip

found 19 hours ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $303 found 19 hours ago

Sat, Oct 4 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

BOI

Boise

$306 Roundtrip, found 19 hours ago

$306

Roundtrip

found 19 hours ago

Select Hawaiian Airlines flight, departing Sat, Oct 4 from Lambert-St. Louis Intl. to Boise, returning Sun, Oct 5, priced at $306 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$319 Roundtrip, found 19 hours ago

$319

Roundtrip

found 19 hours ago

Select American Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $319 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$322 Roundtrip, found 19 hours ago

$322

Roundtrip

found 19 hours ago

Select American Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $322 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$323 Roundtrip, found 19 hours ago

$323

Roundtrip

found 19 hours ago

Select American Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $323 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$324 Roundtrip, found 19 hours ago

$324

Roundtrip

found 19 hours ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $324 found 19 hours ago

Fri, Oct 3 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

BOI

Boise

$326 Roundtrip, found 19 hours ago

$326

Roundtrip

found 19 hours ago

Select Hawaiian Airlines flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Sun, Oct 5, priced at $326 found 19 hours ago

Fri, Oct 3 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

BOI

Boise

$338 Roundtrip, found 19 hours ago

$338

Roundtrip

found 19 hours ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to Boise, returning Tue, Oct 7, priced at $338 found 19 hours ago