Flights from Boise to Southwest Illinois

Cheapest flights from Boise

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.

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$363 Roundtrip, found 23 hours ago

$363

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $363 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$363 Roundtrip, found 23 hours ago

$363

Roundtrip

found 23 hours ago

Select Delta flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $363 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$392 Roundtrip, found 23 hours ago

$392

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $392 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$403 Roundtrip, found 23 hours ago

$403

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $403 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$407 Roundtrip, found 23 hours ago

$407

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $407 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$423 Roundtrip, found 23 hours ago

$423

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $423 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$431 Roundtrip, found 23 hours ago

$431

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $431 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$432 Roundtrip, found 23 hours ago

$432

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $432 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$432 Roundtrip, found 23 hours ago

$432

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $432 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$439 Roundtrip, found 23 hours ago

$439

Roundtrip

found 23 hours ago

Select Delta flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $439 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$443 Roundtrip, found 23 hours ago

$443

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $443 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$450 Roundtrip, found 23 hours ago

$450

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $450 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$454 Roundtrip, found 23 hours ago

$454

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $454 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$456 Roundtrip, found 23 hours ago

$456

Roundtrip

found 23 hours ago

Select Alaska Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $456 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$461 Roundtrip, found 23 hours ago

$461

Roundtrip

found 23 hours ago

Select Alaska Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $461 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$463 Roundtrip, found 23 hours ago

$463

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $463 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$472 Roundtrip, found 23 hours ago

$472

Roundtrip

found 23 hours ago

Select United flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $472 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$483 Roundtrip, found 23 hours ago

$483

Roundtrip

found 23 hours ago

Select Alaska Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $483 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$486 Roundtrip, found 23 hours ago

$486

Roundtrip

found 23 hours ago

Select Alaska Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $486 found 23 hours ago

Sun, Aug 10 - Sun, Aug 17

BOI

Boise

STL

Lambert-St. Louis Intl.

$511 Roundtrip, found 23 hours ago

$511

Roundtrip

found 23 hours ago

Select Alaska Airlines flight, departing Sun, Aug 10 from Boise to Lambert-St. Louis Intl., returning Sun, Aug 17, priced at $511 found 23 hours ago