$91 Cheap Frontier Airlines flights Seattle (SEA) to Chicago (ORD)

$91 Cheap Frontier Airlines flights Seattle (SEA) to Chicago (ORD)

Prices were available within the past 7 days and start at $91 for one-way flights and $198 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 10 - Tue, Oct 14

SEA

Seattle

ORD

Chicago

$198 Roundtrip, found 20 hours ago

$198

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Fri, Oct 10 from Seattle to Chicago, returning Tue, Oct 14, priced at $198 found 20 hours ago

Fri, Oct 10 - Wed, Oct 15

SEA

Seattle

ORD

Chicago

$214 Roundtrip, found 20 hours ago

$214

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Fri, Oct 10 from Seattle to Chicago, returning Wed, Oct 15, priced at $214 found 20 hours ago

Mon, Oct 6 - Tue, Oct 14

SEA

Seattle

ORD

Chicago

$223 Roundtrip, found 20 hours ago

$223

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Mon, Oct 6 from Seattle to Chicago, returning Tue, Oct 14, priced at $223 found 20 hours ago

Sat, Oct 11 - Tue, Oct 14

SEA

Seattle

ORD

Chicago

$240 Roundtrip, found 20 hours ago

$240

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Sat, Oct 11 from Seattle to Chicago, returning Tue, Oct 14, priced at $240 found 20 hours ago

Fri, Oct 10 - Mon, Oct 13

SEA

Seattle

ORD

Chicago

$252 Roundtrip, found 20 hours ago

$252

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Fri, Oct 10 from Seattle to Chicago, returning Mon, Oct 13, priced at $252 found 20 hours ago

Fri, Oct 10 - Sat, Oct 11

SEA

Seattle

ORD

Chicago

$256 Roundtrip, found 20 hours ago

$256

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Fri, Oct 10 from Seattle to Chicago, returning Sat, Oct 11, priced at $256 found 20 hours ago