Flights from St. Louis to Alamo

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.

Mon, May 19 - Thu, May 22

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$175 Roundtrip, found 3 days ago

$175

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, May 19 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Thu, May 22, priced at $175 found 3 days ago

Tue, May 20 - Thu, May 22

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$179 Roundtrip, found 3 days ago

$179

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, May 20 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Thu, May 22, priced at $179 found 3 days ago

Mon, May 19 - Wed, May 21

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$191 Roundtrip, found 3 days ago

$191

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, May 19 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Wed, May 21, priced at $191 found 3 days ago

Tue, May 20 - Sat, May 24

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$195 Roundtrip, found 3 days ago

$195

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, May 20 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, May 24, priced at $195 found 3 days ago

Mon, Aug 11 - Tue, Aug 19

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$199 Roundtrip, found 13 hours ago

$199

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Mon, Aug 11 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Tue, Aug 19, priced at $199 found 13 hours ago

Sat, Aug 16 - Tue, Aug 19

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$211 Roundtrip, found 13 hours ago

$211

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Tue, Aug 19, priced at $211 found 13 hours ago

Wed, May 21 - Thu, May 22

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$211 Roundtrip, found 3 days ago

$211

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, May 21 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Thu, May 22, priced at $211 found 3 days ago

Sun, May 18 - Thu, May 22

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$212 Roundtrip, found 3 days ago

$212

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, May 18 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Thu, May 22, priced at $212 found 3 days ago

Thu, Aug 14 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$219 Roundtrip, found 13 hours ago

$219

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Mon, Aug 18, priced at $219 found 13 hours ago

Thu, Aug 14 - Sat, Aug 16

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$223 Roundtrip, found 13 hours ago

$223

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, Aug 16, priced at $223 found 13 hours ago

Wed, May 21 - Sat, May 24

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$227 Roundtrip, found 3 days ago

$227

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, May 21 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, May 24, priced at $227 found 3 days ago

Sun, May 18 - Wed, May 21

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$228 Roundtrip, found 3 days ago

$228

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, May 18 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Wed, May 21, priced at $228 found 3 days ago

Fri, Aug 15 - Sat, Aug 16

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$230 Roundtrip, found 13 hours ago

$230

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Fri, Aug 15 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, Aug 16, priced at $230 found 13 hours ago

Wed, Aug 13 - Tue, Aug 19

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$235 Roundtrip, found 13 hours ago

$235

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Wed, Aug 13 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Tue, Aug 19, priced at $235 found 13 hours ago

Thu, Aug 14 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$243 Roundtrip, found 13 hours ago

$243

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Mon, Aug 18, priced at $243 found 13 hours ago

Wed, Aug 13 - Sat, Aug 16

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$247 Roundtrip, found 13 hours ago

$247

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Wed, Aug 13 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, Aug 16, priced at $247 found 13 hours ago

Thu, Aug 14 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$353 Roundtrip, found 13 hours ago

$353

Roundtrip

found 13 hours ago

Select American Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Mon, Aug 18, priced at $353 found 13 hours ago

Thu, Aug 14 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$363 Roundtrip, found 13 hours ago

$363

Roundtrip

found 13 hours ago

Select United flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Mon, Aug 18, priced at $363 found 13 hours ago

Sat, Aug 16 - Sat, Aug 16

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$383 Roundtrip, found 13 hours ago

$383

Roundtrip

found 13 hours ago

Select Delta flight, departing Sat, Aug 16 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, Aug 16, priced at $383 found 13 hours ago

Thu, Aug 14 - Mon, Aug 18

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$495 Roundtrip, found 13 hours ago

$495

Roundtrip

found 13 hours ago

Select Alaska Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Mon, Aug 18, priced at $495 found 13 hours ago