Cheap Frontier Airlines flights Milwaukee (MKE) to St. Louis (STL)

Cheap Frontier Airlines flights Milwaukee (MKE) to St. Louis (STL)

Prices were available within the past 7 days and start at for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 9 - Wed, Jun 10

MKE

Milwaukee

STL

St. Louis

$200 Roundtrip, found 12 hours ago

$200

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Milwaukee to St. Louis, returning Wed, Jun 10, priced at $200 found 12 hours ago

Tue, Jun 9 - Sat, Jun 13

MKE

Milwaukee

STL

St. Louis

$214 Roundtrip, found 12 hours ago

$214

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Milwaukee to St. Louis, returning Sat, Jun 13, priced at $214 found 12 hours ago

Tue, Jun 9 - Mon, Jun 15

MKE

Milwaukee

STL

St. Louis

$219 Roundtrip, found 12 hours ago

$219

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Milwaukee to St. Louis, returning Mon, Jun 15, priced at $219 found 12 hours ago

Thu, Jun 11 - Wed, Jun 17

MKE

Milwaukee

STL

St. Louis

$240 Roundtrip, found 12 hours ago

$240

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 11 from Milwaukee to St. Louis, returning Wed, Jun 17, priced at $240 found 12 hours ago

Thu, Jun 11 - Sat, Jun 13

MKE

Milwaukee

STL

St. Louis

$254 Roundtrip, found 12 hours ago

$254

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 11 from Milwaukee to St. Louis, returning Sat, Jun 13, priced at $254 found 12 hours ago

Thu, Jun 11 - Mon, Jun 15

MKE

Milwaukee

STL

St. Louis

$259 Roundtrip, found 12 hours ago

$259

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 11 from Milwaukee to St. Louis, returning Mon, Jun 15, priced at $259 found 12 hours ago

Sun, Jun 14 - Wed, Jun 17

MKE

Milwaukee

STL

St. Louis

$269 Roundtrip, found 12 hours ago

$269

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Sun, Jun 14 from Milwaukee to St. Louis, returning Wed, Jun 17, priced at $269 found 12 hours ago

Sun, Jun 14 - Mon, Jun 15

MKE

Milwaukee

STL

St. Louis

$288 Roundtrip, found 12 hours ago

$288

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Sun, Jun 14 from Milwaukee to St. Louis, returning Mon, Jun 15, priced at $288 found 12 hours ago