How does KAYAK find such low prices on flights from Illinois to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$59 CHEAP FLIGHTS from Illinois to St. Louis

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Flight Deals

Cheap Flights from Illinois to St. Louis

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to St. Louis

Wed, Dec 2 - Wed, Dec 9

11:30 am - 12:40 pmMDW Chicago Midway-STL Lambert-St Louis

1h 10mnonstop

4:40 pm - 5:50 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 10mnonstop

$154Southwest

Thu, Dec 3 - Mon, Dec 7

9:40 am - 11:00 amMDW Chicago Midway-STL Lambert-St Louis

1h 20mnonstop

2:25 pm - 3:30 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$154Southwest

Mon, Dec 7 - Thu, Dec 10

8:45 pm - 10:00 pmMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

6:20 am - 7:25 amSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$154Southwest

Thu, Dec 3 - Mon, Dec 7

1:41 pm - 8:32 pmMDW Chicago Midway-STL Lambert-St Louis

6h 51m1 stop Detroit Metropolitan Wayne County

6:32 am - 1:01 pmSTL Lambert-St Louis-MDW Chicago Midway

6h 29m1 stop Detroit Metropolitan Wayne County

$157Delta

Mon, Dec 7 - Tue, Dec 8

5:30 pm - 11:26 pmMDW Chicago Midway-STL Lambert-St Louis

5h 56m1 stop Minneapolis St Paul

2:17 pm - 6:01 pmSTL Lambert-St Louis-MDW Chicago Midway

3h 44m1 stop Detroit Metropolitan Wayne County

$157Delta

Mon, Dec 7 - Thu, Dec 10

5:30 pm - 11:26 pmMDW Chicago Midway-STL Lambert-St Louis

5h 56m1 stop Minneapolis St Paul

6:32 am - 1:01 pmSTL Lambert-St Louis-MDW Chicago Midway

6h 29m1 stop Detroit Metropolitan Wayne County

$157Delta

Sun, Nov 22 - Tue, Nov 24

9:10 am - 10:34 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

6:00 am - 7:36 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$203American Airlines

Fri, Dec 11 - Sun, Dec 13

5:50 pm - 7:26 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 36mnonstop

8:02 am - 9:30 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 28mnonstop

$203United Airlines

Thu, Dec 3 - Sun, Dec 6

9:45 pm - 10:59 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 14mnonstop

6:55 pm - 8:25 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 30mnonstop

$203United Airlines

Sat, Nov 21 - Mon, Nov 23

6:40 pm - 8:04 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

5:29 pm - 7:10 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 41mnonstop

$207American Airlines

Recent last minute flight deals from Illinois to St. Louis

Sun, Nov 8 - Wed, Nov 11

9:51 am - 11:16 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

13h 25m1 stop Orlando

4:18 pm - 12:21 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

8h 03m1 stop Denver Intl

$333Frontier

Mon, Nov 9 - Wed, Nov 11

6:08 am - 5:42 pmMDW Chicago Midway-STL Lambert-St Louis

11h 34m1 stop Atlanta Hartsfield-Jackson

6:34 pm - 11:47 pmSTL Lambert-St Louis-MDW Chicago Midway

5h 13m1 stop Atlanta Hartsfield-Jackson

$333Frontier

Mon, Nov 9 - Thu, Nov 12

9:51 am - 11:16 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

13h 25m1 stop Orlando

12:14 pm - 7:15 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

7h 01m1 stop Dallas/Fort Worth

$360Frontier

Wed, Nov 11 - Sun, Nov 15

3:30 pm - 4:59 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 29mnonstop

7:30 am - 9:00 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 30mnonstop

$517United Airlines

Wed, Nov 11 - Sun, Nov 15

7:35 am - 8:50 amMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

1:05 pm - 2:10 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$517Southwest

Fri, Nov 6 - Fri, Nov 6

7:27 am - 8:55 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 28mnonstop

10:53 am - 12:29 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$520United Airlines

Sun, Nov 8 - Sun, Nov 8

7:27 am - 8:55 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 28mnonstop

10:53 am - 12:29 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$520United Airlines

Tue, Nov 10 - Tue, Nov 10

9:30 am - 10:53 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 23mnonstop

5:29 pm - 7:05 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$524American Airlines

Mon, Nov 9 - Tue, Nov 10

10:39 pm - 11:59 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 20mnonstop

8:15 pm - 9:51 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$524American Airlines

Tue, Nov 10 - Thu, Nov 12

8:45 pm - 10:00 pmMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

10:30 am - 11:40 amSTL Lambert-St Louis-MDW Chicago Midway

1h 10mnonstop

$525Southwest

Recent direct flight deals from Illinois to St. Louis

Wed, Dec 2 - Wed, Dec 9

11:30 am - 12:40 pmMDW Chicago Midway-STL Lambert-St Louis

1h 10mnonstop

4:40 pm - 5:50 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 10mnonstop

$154Southwest

Thu, Dec 3 - Mon, Dec 7

9:40 am - 11:00 amMDW Chicago Midway-STL Lambert-St Louis

1h 20mnonstop

2:25 pm - 3:30 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$154Southwest

Mon, Dec 7 - Thu, Dec 10

8:45 pm - 10:00 pmMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

6:20 am - 7:25 amSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$154Southwest

Fri, Dec 4 - Thu, Dec 10

3:50 pm - 5:10 pmMDW Chicago Midway-STL Lambert-St Louis

1h 20mnonstop

2:25 pm - 3:30 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$191Southwest

Sun, Nov 22 - Tue, Nov 24

9:10 am - 10:34 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

6:00 am - 7:36 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$203American Airlines

Fri, Dec 11 - Sun, Dec 13

5:50 pm - 7:26 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 36mnonstop

8:02 am - 9:30 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 28mnonstop

$203United Airlines

Thu, Dec 3 - Sun, Dec 6

9:45 pm - 10:59 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 14mnonstop

6:55 pm - 8:25 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 30mnonstop

$203United Airlines

Wed, Dec 9 - Thu, Dec 10

10:52 am - 12:22 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 30mnonstop

6:30 am - 7:57 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 27mnonstop

$204United Airlines

Sat, Nov 21 - Mon, Nov 23

6:40 pm - 8:04 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

5:29 pm - 7:10 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 41mnonstop

$207American Airlines

Sat, Nov 21 - Mon, Nov 23

5:59 pm - 7:27 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 28mnonstop

5:00 am - 6:29 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 29mnonstop

$255American Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$59

Best time to beat the crowds with an average 7% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Chicago Midway Airport to St. Louis

How does KAYAK find such low prices on flights from Illinois to St. Louis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to St. Louis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to St. Louis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.