Flights from St. Louis to Alpine

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, Aug 19 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$275 Roundtrip, found 1 day ago

$275

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Aug 19 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sat, Aug 23, priced at $275 found 1 day ago

Sat, Sep 13 - Fri, Sep 26

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$275 Roundtrip, found 2 days ago

$275

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 13 from Lambert-St. Louis Intl. to San Francisco Intl., returning Fri, Sep 26, priced at $275 found 2 days ago

Sat, Sep 6 - Thu, Sep 18

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$280 Roundtrip, found 2 days ago

$280

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to San Francisco Intl., returning Thu, Sep 18, priced at $280 found 2 days ago

Mon, Aug 25 - Tue, Aug 26

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$283 Roundtrip, found 1 day ago

$283

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to San Francisco Intl., returning Tue, Aug 26, priced at $283 found 1 day ago

Sat, Sep 13 - Sun, Sep 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$285 Roundtrip, found 2 days ago

$285

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 13 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sun, Sep 28, priced at $285 found 2 days ago

Wed, Aug 20 - Thu, Aug 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$288 Roundtrip, found 1 day ago

$288

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to San Francisco Intl., returning Thu, Aug 28, priced at $288 found 1 day ago

Mon, Sep 8 - Sun, Sep 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$290 Roundtrip, found 2 days ago

$290

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Sep 8 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sun, Sep 28, priced at $290 found 2 days ago

Thu, Aug 21 - Thu, Aug 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$291 Roundtrip, found 1 day ago

$291

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Lambert-St. Louis Intl. to San Francisco Intl., returning Thu, Aug 28, priced at $291 found 1 day ago

Sat, Aug 23 - Thu, Aug 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$293 Roundtrip, found 1 day ago

$293

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Aug 23 from Lambert-St. Louis Intl. to San Francisco Intl., returning Thu, Aug 28, priced at $293 found 1 day ago

Fri, Aug 22 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$294 Roundtrip, found 1 day ago

$294

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to San Francisco Intl., returning Mon, Aug 25, priced at $294 found 1 day ago

Fri, Sep 12 - Sun, Sep 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$295 Roundtrip, found 2 days ago

$295

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 12 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sun, Sep 28, priced at $295 found 2 days ago

Sun, Aug 24 - Thu, Aug 28

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$296 Roundtrip, found 1 day ago

$296

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Aug 24 from Lambert-St. Louis Intl. to San Francisco Intl., returning Thu, Aug 28, priced at $296 found 1 day ago

Fri, Aug 22 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$300 Roundtrip, found 1 day ago

$300

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to San Francisco Intl., returning Mon, Aug 25, priced at $300 found 1 day ago

Fri, Sep 19 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$300 Roundtrip, found 2 days ago

$300

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sun, Oct 5, priced at $300 found 2 days ago

Fri, Aug 22 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$302 Roundtrip, found 1 day ago

$302

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to San Francisco Intl., returning Mon, Aug 25, priced at $302 found 1 day ago

Tue, Jul 29 - Tue, Aug 5

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$304 Roundtrip, found 4 days ago

$304

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Lambert-St. Louis Intl. to San Francisco Intl., returning Tue, Aug 5, priced at $304 found 4 days ago

Tue, Sep 16 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$318 Roundtrip, found 2 days ago

$318

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Tue, Sep 16 from Lambert-St. Louis Intl. to San Francisco Intl., returning Tue, Sep 23, priced at $318 found 2 days ago

Fri, Aug 22 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$342 Roundtrip, found 1 day ago

$342

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to San Francisco Intl., returning Mon, Aug 25, priced at $342 found 1 day ago

Tue, Sep 16 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$347 Roundtrip, found 2 days ago

$347

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Sep 16 from Lambert-St. Louis Intl. to San Francisco Intl., returning Sat, Sep 20, priced at $347 found 2 days ago

Fri, Aug 22 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

SFO

San Francisco Intl.

$360 Roundtrip, found 1 day ago

$360

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to San Francisco Intl., returning Mon, Aug 25, priced at $360 found 1 day ago