$420 Cheap Frontier Airlines flights San Francisco (SFO) to Chicago (ORD)

$420 Cheap Frontier Airlines flights San Francisco (SFO) to Chicago (ORD)

Prices were available within the past 7 days and start at $420 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Dec 8 - Sat, Dec 13

SFO

San Francisco

ORD

Chicago

$140 Roundtrip, found 1 day ago

$140

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 8 from San Francisco to Chicago, returning Sat, Dec 13, priced at $140 found 1 day ago

Fri, Dec 5 - Sat, Dec 13

SFO

San Francisco

ORD

Chicago

$144 Roundtrip, found 1 day ago

$144

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Dec 5 from San Francisco to Chicago, returning Sat, Dec 13, priced at $144 found 1 day ago

Fri, Dec 5 - Sun, Dec 14

SFO

San Francisco

ORD

Chicago

$148 Roundtrip, found 1 day ago

$148

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Dec 5 from San Francisco to Chicago, returning Sun, Dec 14, priced at $148 found 1 day ago

Thu, Dec 11 - Sun, Dec 14

SFO

San Francisco

ORD

Chicago

$152 Roundtrip, found 1 day ago

$152

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 11 from San Francisco to Chicago, returning Sun, Dec 14, priced at $152 found 1 day ago

Mon, Dec 8 - Mon, Dec 15

SFO

San Francisco

ORD

Chicago

$186 Roundtrip, found 1 day ago

$186

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 8 from San Francisco to Chicago, returning Mon, Dec 15, priced at $186 found 1 day ago

Fri, Dec 5 - Mon, Dec 15

SFO

San Francisco

ORD

Chicago

$190 Roundtrip, found 1 day ago

$190

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Dec 5 from San Francisco to Chicago, returning Mon, Dec 15, priced at $190 found 1 day ago

Thu, Dec 11 - Mon, Dec 15

SFO

San Francisco

ORD

Chicago

$194 Roundtrip, found 1 day ago

$194

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 11 from San Francisco to Chicago, returning Mon, Dec 15, priced at $194 found 1 day ago

Mon, Dec 8 - Thu, Dec 18

SFO

San Francisco

ORD

Chicago

$210 Roundtrip, found 1 day ago

$210

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 8 from San Francisco to Chicago, returning Thu, Dec 18, priced at $210 found 1 day ago

Sun, Dec 7 - Thu, Dec 18

SFO

San Francisco

ORD

Chicago

$214 Roundtrip, found 1 day ago

$214

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Dec 7 from San Francisco to Chicago, returning Thu, Dec 18, priced at $214 found 1 day ago

Thu, Dec 11 - Thu, Dec 18

SFO

San Francisco

ORD

Chicago

$218 Roundtrip, found 1 day ago

$218

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 11 from San Francisco to Chicago, returning Thu, Dec 18, priced at $218 found 1 day ago

Thu, Dec 18 - Sun, Dec 28

SFO

San Francisco

ORD

Chicago

$387 Roundtrip, found 16 hours ago

$387

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Thu, Dec 18 from San Francisco to Chicago, returning Sun, Dec 28, priced at $387 found 16 hours ago