St Louis to Chicago

STLORD

Fly from St Louis to Chicago starting at USD 86 with Frontier Airlines.Best fare available on Jun 15, 2026.Limited seats. Better plans. Book before it's gone.

St Louis to Chicago cheapest flights this week

28 May
United Airlines
06:00STL
07:30ORD
Direct$95VIEW DEAL
1 Jun
Frontier Airlines
20:08STL
20:32ORD
1 Stop$133VIEW DEAL
2 Jun
Frontier Airlines
20:08STL
20:32ORD
1 Stop$133VIEW DEAL
15 Jun
Frontier Airlines
17:06STL
08:03ORD
1 Stop$86VIEW DEAL
20 Jun
American Airlines
17:11STL
18:52ORD
Direct$166VIEW DEAL

St Louis to Chicago monthly flight fare trend

May
from USD 95
Jun
from USD 86
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights

Airport Details

Origin

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

Destination

Chicago

Chicago O'Hare International Airport (ORD)

Chicago, ORD
Zone

Chicago

Elev

680 ft

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