Cheap Flights to Illinois from $28

How much is the cheapest flight to Illinois?

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 13 - Wed, May 20

ATL

Atlanta

STL

St. Louis

$56 Roundtrip, found 1 hour ago

$56

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Wed, May 13 from Atlanta to St. Louis, returning Wed, May 20, priced at $56 found 1 hour ago

Fri, May 8 - Fri, May 15

ATL

Atlanta

MDW

Chicago

$68 Roundtrip, just found

$68

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, May 8 from Atlanta to Chicago, returning Fri, May 15, priced at $68 just found

Thu, Apr 30 - Sat, May 2

ATL

Atlanta

ORD

Chicago

$73 Roundtrip, just found

$73

Roundtrip

just found

Select Spirit Airlines flight, departing Thu, Apr 30 from Atlanta to Chicago, returning Sat, May 2, priced at $73 just found

Thu, May 28 - Tue, Jun 2

LAX

Los Angeles

ORD

Chicago

$107 Roundtrip, just found

$107

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, May 28 from Los Angeles to Chicago, returning Tue, Jun 2, priced at $107 just found

Fri, May 8 - Sun, May 10

LAX

Los Angeles

STL

St. Louis

$160 Roundtrip, just found

$160

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, May 8 from Los Angeles to St. Louis, returning Sun, May 10, priced at $160 just found

Wed, Jun 3 - Tue, Jun 9

ATL

Atlanta

RFD

Rockford

$196 Roundtrip, found 6 hours ago

$196

Roundtrip

found 6 hours ago

Select American Airlines flight, departing Wed, Jun 3 from Atlanta to Rockford, returning Tue, Jun 9, priced at $196 found 6 hours ago

Wed, Jun 3 - Tue, Jun 9

LAX

Los Angeles

RFD

Rockford

$199 Roundtrip, found 4 hours ago

$199

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Wed, Jun 3 from Los Angeles to Rockford, returning Tue, Jun 9, priced at $199 found 4 hours ago

Tue, Jun 2 - Tue, Jun 9

LAX

Los Angeles

MDW

Chicago

$199 Roundtrip, found 16 hours ago

$199

Roundtrip

found 16 hours ago

Select Southwest Airlines flight, departing Tue, Jun 2 from Los Angeles to Chicago, returning Tue, Jun 9, priced at $199 found 16 hours ago

Sat, Sep 5 - Sat, Sep 12

ATL

Atlanta

MLI

Moline

$233 Roundtrip, found 4 hours ago

$233

Roundtrip

found 4 hours ago

Select United flight, departing Sat, Sep 5 from Atlanta to Moline, returning Sat, Sep 12, priced at $233 found 4 hours ago

Sat, May 16 - Tue, May 19

ATL

Atlanta

PIA

Peoria

$291 Roundtrip, found 12 hours ago

$291

Roundtrip

found 12 hours ago

Select American Airlines flight, departing Sat, May 16 from Atlanta to Peoria, returning Tue, May 19, priced at $291 found 12 hours ago