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 1 day ago

$91

Roundtrip

found 1 day 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 1 day ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$91 Roundtrip, found 3 days ago

$91

Roundtrip

found 3 days 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 3 days ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$94 Roundtrip, found 8 hours ago

$94

Roundtrip

found 8 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 $94 found 8 hours ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$107 Roundtrip, found 8 hours ago

$107

Roundtrip

found 8 hours ago

Select United flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $107 found 8 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$110 Roundtrip, found 3 days ago

$110

Roundtrip

found 3 days 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 3 days ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$124 Roundtrip, found 8 hours ago

$124

Roundtrip

found 8 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 $124 found 8 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$134 Roundtrip, found 3 days ago

$134

Roundtrip

found 3 days 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 3 days ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$137 Roundtrip, found 8 hours ago

$137

Roundtrip

found 8 hours ago

Select United flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 11, priced at $137 found 8 hours ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$138 Roundtrip, found 8 hours ago

$138

Roundtrip

found 8 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 8 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$140 Roundtrip, found 3 days ago

$140

Roundtrip

found 3 days 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 3 days ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$142 Roundtrip, found 3 days ago

$142

Roundtrip

found 3 days 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 3 days ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$144 Roundtrip, found 8 hours ago

$144

Roundtrip

found 8 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 8 hours ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$148 Roundtrip, found 3 days ago

$148

Roundtrip

found 3 days 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 3 days ago

Tue, Aug 5 - Tue, Aug 12

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$151 Roundtrip, found 1 hour ago

$151

Roundtrip

found 1 hour ago

Select American Airlines flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to O'Hare Intl., returning Tue, Aug 12, priced at $151 found 1 hour ago

Thu, Aug 7 - Tue, Aug 12

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$154 Roundtrip, found 1 hour ago

$154

Roundtrip

found 1 hour ago

Select American Airlines flight, departing Thu, Aug 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Tue, Aug 12, priced at $154 found 1 hour ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$156 Roundtrip, found 3 days ago

$156

Roundtrip

found 3 days 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 3 days ago

Thu, Aug 7 - Thu, Aug 14

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$157 Roundtrip, found 1 hour ago

$157

Roundtrip

found 1 hour ago

Select United flight, departing Thu, Aug 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Thu, Aug 14, priced at $157 found 1 hour ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$161 Roundtrip, found 3 days ago

$161

Roundtrip

found 3 days 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 3 days ago

Fri, Oct 3 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$165 Roundtrip, found 3 days ago

$165

Roundtrip

found 3 days 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 3 days ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

ORD

O'Hare Intl.

$178 Roundtrip, found 8 hours ago

$178

Roundtrip

found 8 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 8 hours ago