$137 Cheap Frontier Airlines flights St. Louis (STL) to San Juan (SJU)

$137 Cheap Frontier Airlines flights St. Louis (STL) to San Juan (SJU)

Prices were available within the past 7 days and start at $137 for one-way flights and $261 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 29 - Sun, Jun 7

STL

St. Louis

SJU

San Juan

$261 Roundtrip, found 6 days ago

$261

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, May 29 from St. Louis to San Juan, returning Sun, Jun 7, priced at $261 found 6 days ago

Sun, May 24 - Mon, Jun 1

STL

St. Louis

SJU

San Juan

$265 Roundtrip, found 5 days ago

$265

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, May 24 from St. Louis to San Juan, returning Mon, Jun 1, priced at $265 found 5 days ago

Fri, May 29 - Thu, Jun 4

STL

St. Louis

SJU

San Juan

$274 Roundtrip, found 6 days ago

$274

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, May 29 from St. Louis to San Juan, returning Thu, Jun 4, priced at $274 found 6 days ago

Tue, May 26 - Sun, Jun 7

STL

St. Louis

SJU

San Juan

$312 Roundtrip, found 6 days ago

$312

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, May 26 from St. Louis to San Juan, returning Sun, Jun 7, priced at $312 found 6 days ago

Sun, May 24 - Sat, May 30

STL

St. Louis

SJU

San Juan

$316 Roundtrip, found 5 days ago

$316

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, May 24 from St. Louis to San Juan, returning Sat, May 30, priced at $316 found 5 days ago

Sat, May 23 - Mon, Jun 1

STL

St. Louis

SJU

San Juan

$325 Roundtrip, found 5 days ago

$325

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, May 23 from St. Louis to San Juan, returning Mon, Jun 1, priced at $325 found 5 days ago

Sun, May 24 - Fri, May 29

STL

St. Louis

SJU

San Juan

$327 Roundtrip, found 5 days ago

$327

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, May 24 from St. Louis to San Juan, returning Fri, May 29, priced at $327 found 5 days ago

Fri, May 29 - Wed, Jun 3

STL

St. Louis

SJU

San Juan

$336 Roundtrip, found 6 days ago

$336

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, May 29 from St. Louis to San Juan, returning Wed, Jun 3, priced at $336 found 6 days ago