$140 Cheap Frontier Airlines flights San Francisco (SFO) to St. Louis (STL)

$140 Cheap Frontier Airlines flights San Francisco (SFO) to St. Louis (STL)

Prices were available within the past 7 days and start at $140 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 18 - Sat, Oct 25

SFO

San Francisco

STL

St. Louis

$228 Roundtrip, found 2 days ago

$228

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Oct 18 from San Francisco to St. Louis, returning Sat, Oct 25, priced at $228 found 2 days ago

Fri, Aug 15 - Sat, Aug 23

SFO

San Francisco

STL

St. Louis

$243 Roundtrip, found 2 days ago

$243

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from San Francisco to St. Louis, returning Sat, Aug 23, priced at $243 found 2 days ago

Sun, Oct 19 - Sat, Oct 25

SFO

San Francisco

STL

St. Louis

$248 Roundtrip, found 2 days ago

$248

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Oct 19 from San Francisco to St. Louis, returning Sat, Oct 25, priced at $248 found 2 days ago

Sun, Oct 19 - Mon, Oct 27

SFO

San Francisco

STL

St. Louis

$268 Roundtrip, found 2 days ago

$268

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Oct 19 from San Francisco to St. Louis, returning Mon, Oct 27, priced at $268 found 2 days ago

Fri, Aug 15 - Sat, Aug 23

SFO

San Francisco

STL

St. Louis

$284 Roundtrip, found 2 days ago

$284

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from San Francisco to St. Louis, returning Sat, Aug 23, priced at $284 found 2 days ago

Fri, Aug 15 - Sat, Aug 23

SFO

San Francisco

STL

St. Louis

$357 Roundtrip, found 2 days ago

$357

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from San Francisco to St. Louis, returning Sat, Aug 23, priced at $357 found 2 days ago