$154 Cheap Frontier Airlines flights St. Louis (STL) to San Juan (SJU)

$154 Cheap Frontier Airlines flights St. Louis (STL) to San Juan (SJU)

Prices were available within the past 7 days and start at $154 for one-way flights and $317 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 5 - Sat, Sep 6

STL

St. Louis

SJU

San Juan

$317 Roundtrip, found 2 days ago

$317

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to San Juan, returning Sat, Sep 6, priced at $317 found 2 days ago

Fri, Sep 5 - Sun, Sep 7

STL

St. Louis

SJU

San Juan

$318 Roundtrip, found 2 days ago

$318

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to San Juan, returning Sun, Sep 7, priced at $318 found 2 days ago

Sun, Sep 7 - Mon, Sep 8

STL

St. Louis

SJU

San Juan

$323 Roundtrip, found 2 days ago

$323

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Sep 7 from St. Louis to San Juan, returning Mon, Sep 8, priced at $323 found 2 days ago

Sun, Aug 31 - Mon, Sep 8

STL

St. Louis

SJU

San Juan

$328 Roundtrip, found 3 days ago

$328

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from St. Louis to San Juan, returning Mon, Sep 8, priced at $328 found 3 days ago

Sun, Aug 31 - Sun, Sep 7

STL

St. Louis

SJU

San Juan

$338 Roundtrip, found 3 days ago

$338

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from St. Louis to San Juan, returning Sun, Sep 7, priced at $338 found 3 days ago

Mon, Sep 1 - Mon, Sep 8

STL

St. Louis

SJU

San Juan

$356 Roundtrip, found 2 days ago

$356

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Sep 1 from St. Louis to San Juan, returning Mon, Sep 8, priced at $356 found 2 days ago