Flights from St. Louis to Mundelein

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$91 Roundtrip, found 16 hours ago

$91

Roundtrip

found 16 hours ago

Select American Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $91 found 16 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$91 Roundtrip, found 1 day ago

$91

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $91 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$104 Roundtrip, found 16 hours ago

$104

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $104 found 16 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$110 Roundtrip, found 1 day ago

$110

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $110 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$121 Roundtrip, found 16 hours ago

$121

Roundtrip

found 16 hours ago

Select American Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $121 found 16 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$134 Roundtrip, found 1 day ago

$134

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $134 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$134 Roundtrip, found 16 hours ago

$134

Roundtrip

found 16 hours ago

Select United flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $134 found 16 hours ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$138 Roundtrip, found 16 hours ago

$138

Roundtrip

found 16 hours ago

Select Southern Airways Express flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $138 found 16 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$140 Roundtrip, found 1 day ago

$140

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $140 found 1 day ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$142 Roundtrip, found 1 day ago

$142

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $142 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$144 Roundtrip, found 16 hours ago

$144

Roundtrip

found 16 hours ago

Select Southern Airways Express flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $144 found 16 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$148 Roundtrip, found 1 day ago

$148

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $148 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$151 Roundtrip, found 16 hours ago

$151

Roundtrip

found 16 hours ago

Select American Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $151 found 16 hours ago

Mon, Sep 29 - Wed, Oct 8

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$154 Roundtrip, found 4 days ago

$154

Roundtrip

found 4 days ago

Select United flight, departing Mon, Sep 29 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Oct 8, priced at $154 found 4 days ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$156 Roundtrip, found 1 day ago

$156

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $156 found 1 day ago

Mon, Sep 29 - Thu, Oct 9

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$157 Roundtrip, found 4 days ago

$157

Roundtrip

found 4 days ago

Select United flight, departing Mon, Sep 29 from Lambert-St. Louis Intl. to O'Hare Intl., returning Thu, Oct 9, priced at $157 found 4 days ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$161 Roundtrip, found 1 day ago

$161

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $161 found 1 day ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$163 Roundtrip, found 1 day ago

$163

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $163 found 1 day ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$165 Roundtrip, found 1 day ago

$165

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Oct 3 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $165 found 1 day ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$178 Roundtrip, found 16 hours ago

$178

Roundtrip

found 16 hours ago

Select Spirit Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $178 found 16 hours ago