Cheap Flights To Southern Illinois 2025

Southern Illinois Flights as Low as $237

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.

Delta
Sat, Jun 14 - Tue, Jun 17
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$237 Roundtrip, found 23 hours ago
$237
Roundtrip
found 23 hours ago
Select Delta flight, departing Sat, Jun 14 from Burlington Intl. to Lambert-St. Louis Intl., returning Tue, Jun 17, priced at $237 found 23 hours ago
Delta
Sat, Jun 14 - Fri, Jun 20
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$248 Roundtrip, found 23 hours ago
$248
Roundtrip
found 23 hours ago
Select Delta flight, departing Sat, Jun 14 from Burlington Intl. to Lambert-St. Louis Intl., returning Fri, Jun 20, priced at $248 found 23 hours ago
American Airlines
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$259 Roundtrip, found 23 hours ago
$259
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $259 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$274 Roundtrip, found 23 hours ago
$274
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $274 found 23 hours ago
Delta
Sat, Jun 14 - Thu, Jun 19
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$303 Roundtrip, found 23 hours ago
$303
Roundtrip
found 23 hours ago
Select Delta flight, departing Sat, Jun 14 from Burlington Intl. to Lambert-St. Louis Intl., returning Thu, Jun 19, priced at $303 found 23 hours ago
Delta
Thu, Jun 12 - Thu, Jun 19
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$314 Roundtrip, found 23 hours ago
$314
Roundtrip
found 23 hours ago
Select Delta flight, departing Thu, Jun 12 from Burlington Intl. to Lambert-St. Louis Intl., returning Thu, Jun 19, priced at $314 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$329 Roundtrip, found 23 hours ago
$329
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $329 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$344 Roundtrip, found 23 hours ago
$344
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $344 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$349 Roundtrip, found 23 hours ago
$349
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $349 found 23 hours ago
United
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$355 Roundtrip, found 23 hours ago
$355
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $355 found 23 hours ago
American Airlines
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$359 Roundtrip, found 23 hours ago
$359
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $359 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$364 Roundtrip, found 23 hours ago
$364
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $364 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$384 Roundtrip, found 23 hours ago
$384
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $384 found 23 hours ago
Delta
Fri, Jun 13 - Sun, Jun 15
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$386 Roundtrip, found 23 hours ago
$386
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 13 from Burlington Intl. to Lambert-St. Louis Intl., returning Sun, Jun 15, priced at $386 found 23 hours ago
United
Mon, Jun 16 - Sat, Jun 21
BTV
Burlington Intl.
STL
Lambert-St. Louis Intl.
$389 Roundtrip, found 23 hours ago
$389
Roundtrip
found 23 hours ago
Select United flight, departing Mon, Jun 16 from Burlington Intl. to Lambert-St. Louis Intl., returning Sat, Jun 21, priced at $389 found 23 hours ago
American Airlines
Mon, Jul 7 - Tue, Jul 15
BTV
Burlington Intl.
PAH
Barkley Regional
$630 Roundtrip, found 1 day ago
$630
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Jul 7 from Burlington Intl. to Barkley Regional, returning Tue, Jul 15, priced at $630 found 1 day ago

Cheap Southern Illinois Flights

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