Flights from St. Louis to Helena

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.

Tue, Jun 3 - Fri, Jun 6

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$476 Roundtrip, found 15 hours ago

$476

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 6, priced at $476 found 15 hours ago

Tue, Jun 3 - Thu, Jun 12

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$496 Roundtrip, found 15 hours ago

$496

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Thu, Jun 12, priced at $496 found 15 hours ago

Tue, Jun 3 - Mon, Jun 9

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$496 Roundtrip, found 15 hours ago

$496

Roundtrip

found 15 hours ago

Select Alaska Airlines flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Mon, Jun 9, priced at $496 found 15 hours ago

Wed, Jun 4 - Tue, Jun 10

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$507 Roundtrip, found 15 hours ago

$507

Roundtrip

found 15 hours ago

Select Delta flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Tue, Jun 10, priced at $507 found 15 hours ago

Sun, Jun 1 - Fri, Jun 6

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$511 Roundtrip, found 15 hours ago

$511

Roundtrip

found 15 hours ago

Select Alaska Airlines flight, departing Sun, Jun 1 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 6, priced at $511 found 15 hours ago

Tue, Jun 3 - Mon, Jun 9

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$517 Roundtrip, found 15 hours ago

$517

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Mon, Jun 9, priced at $517 found 15 hours ago

Tue, Jun 3 - Mon, Jun 9

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$522 Roundtrip, found 15 hours ago

$522

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Mon, Jun 9, priced at $522 found 15 hours ago

Tue, Jun 3 - Fri, Jun 13

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$526 Roundtrip, found 15 hours ago

$526

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 13, priced at $526 found 15 hours ago

Wed, Jun 4 - Tue, Jun 10

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$528 Roundtrip, found 15 hours ago

$528

Roundtrip

found 15 hours ago

Select Delta flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Tue, Jun 10, priced at $528 found 15 hours ago

Sun, Jun 1 - Thu, Jun 12

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$531 Roundtrip, found 15 hours ago

$531

Roundtrip

found 15 hours ago

Select Alaska Airlines flight, departing Sun, Jun 1 from Lambert-St. Louis Intl. to Helena Regional, returning Thu, Jun 12, priced at $531 found 15 hours ago

Wed, Jun 4 - Fri, Jun 6

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$536 Roundtrip, found 15 hours ago

$536

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 6, priced at $536 found 15 hours ago

Wed, Jun 4 - Tue, Jun 10

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$536 Roundtrip, found 15 hours ago

$536

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Tue, Jun 10, priced at $536 found 15 hours ago

Tue, Jun 3 - Wed, Jun 11

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$539 Roundtrip, found 15 hours ago

$539

Roundtrip

found 15 hours ago

Select Delta flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Wed, Jun 11, priced at $539 found 15 hours ago

Sat, May 31 - Wed, Jun 11

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$543 Roundtrip, found 15 hours ago

$543

Roundtrip

found 15 hours ago

Select Delta flight, departing Sat, May 31 from Lambert-St. Louis Intl. to Helena Regional, returning Wed, Jun 11, priced at $543 found 15 hours ago

Tue, Jun 3 - Mon, Jun 9

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$544 Roundtrip, found 15 hours ago

$544

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Mon, Jun 9, priced at $544 found 15 hours ago

Tue, Jun 3 - Mon, Jun 9

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$549 Roundtrip, found 15 hours ago

$549

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Jun 3 from Lambert-St. Louis Intl. to Helena Regional, returning Mon, Jun 9, priced at $549 found 15 hours ago

Mon, Jun 2 - Fri, Jun 6

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$550 Roundtrip, found 15 hours ago

$550

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Mon, Jun 2 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 6, priced at $550 found 15 hours ago

Thu, Jun 5 - Fri, Jun 6

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$556 Roundtrip, found 15 hours ago

$556

Roundtrip

found 15 hours ago

Select Hawaiian Airlines flight, departing Thu, Jun 5 from Lambert-St. Louis Intl. to Helena Regional, returning Fri, Jun 6, priced at $556 found 15 hours ago

Wed, Jun 4 - Tue, Jun 10

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$556 Roundtrip, found 15 hours ago

$556

Roundtrip

found 15 hours ago

Select Alaska Airlines flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Tue, Jun 10, priced at $556 found 15 hours ago

Wed, Jun 4 - Tue, Jun 10

STL

Lambert-St. Louis Intl.

HLN

Helena Regional

$560 Roundtrip, found 15 hours ago

$560

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Jun 4 from Lambert-St. Louis Intl. to Helena Regional, returning Tue, Jun 10, priced at $560 found 15 hours ago