Flights from St. Louis to South Pacific Coast

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, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$360 Roundtrip, found 9 hours ago

$360

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $360 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$366 Roundtrip, found 9 hours ago

$366

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $366 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$385 Roundtrip, found 9 hours ago

$385

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $385 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$386 Roundtrip, found 9 hours ago

$386

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $386 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$389 Roundtrip, found 9 hours ago

$389

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $389 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$395 Roundtrip, found 9 hours ago

$395

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $395 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$401 Roundtrip, found 9 hours ago

$401

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $401 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$414 Roundtrip, found 9 hours ago

$414

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $414 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$415 Roundtrip, found 9 hours ago

$415

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $415 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$416 Roundtrip, found 9 hours ago

$416

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $416 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$422 Roundtrip, found 9 hours ago

$422

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $422 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$424 Roundtrip, found 9 hours ago

$424

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $424 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$431 Roundtrip, found 9 hours ago

$431

Roundtrip

found 9 hours ago

Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $431 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$431 Roundtrip, found 9 hours ago

$431

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $431 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$437 Roundtrip, found 9 hours ago

$437

Roundtrip

found 9 hours ago

Select Copa flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $437 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$493 Roundtrip, found 9 hours ago

$493

Roundtrip

found 9 hours ago

Select Delta flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $493 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$500 Roundtrip, found 9 hours ago

$500

Roundtrip

found 9 hours ago

Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $500 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$1,203 Roundtrip, found 9 hours ago

$1,203

Roundtrip

found 9 hours ago

Select Copa flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $1,203 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$1,355 Roundtrip, found 9 hours ago

$1,355

Roundtrip

found 9 hours ago

Select avianca flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $1,355 found 9 hours ago

Tue, Feb 3 - Sat, Feb 14

STL

Lambert-St. Louis Intl.

SJO

Juan Santamaría Intl.

$1,588 Roundtrip, found 9 hours ago

$1,588

Roundtrip

found 9 hours ago

Select Air Canada flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $1,588 found 9 hours ago