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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Cheap Flights from Illinois to St. Louis

Cheap flights from Illinois to St. Louis with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Direct

Sat, Nov 21 - Sun, Nov 22

5:50 pm - 7:05 pmMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

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

1h 05mnonstop

$171Southwest

Sat, Nov 21 - Sun, Nov 22

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

1h 24mnonstop

8:12 pm - 9:48 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$172American Airlines

Sat, Nov 21 - Sun, Nov 22

9:30 pm - 10:50 pmMDW Chicago Midway-STL Lambert-St Louis

1h 20mnonstop

10:15 am - 2:50 pmSTL Lambert-St Louis-MDW Chicago Midway

4h 35m1 stop Raleigh-Durham

$181Southwest

Sat, Nov 21 - Sun, Nov 22

6:55 pm - 11:55 pmMDW Chicago Midway-STL Lambert-St Louis

5h 00m2 stops Louisville Intl Nashville Intl

7:15 pm - 8:20 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$186Southwest

Tue, Nov 3 - Fri, Nov 6

6:42 pm - 5:40 pmMDW Chicago Midway-STL Lambert-St Louis

22h 58m1 stop Atlanta Hartsfield-Jackson

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

5h 13m1 stop Atlanta Hartsfield-Jackson

$189Frontier

Sat, Nov 21 - Sun, Nov 22

9:59 am - 4:41 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

6h 42m1 stop Minneapolis St Paul

6:40 am - 10:39 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

3h 59m1 stop Detroit Metropolitan Wayne County

$190Delta

Fri, Nov 6 - Sun, Nov 8

6:03 pm - 7:22 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 19mnonstop

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

1h 36mnonstop

$198American Airlines

Thu, Dec 3 - Sun, Dec 6

6:30 pm - 7:58 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 28mnonstop

1:43 pm - 3:24 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 41mnonstop

$198American Airlines

Tue, Dec 8 - Wed, Dec 9

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

1h 14mnonstop

5:25 am - 6:58 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 33mnonstop

$204United Airlines

Thu, Nov 5 - Mon, Nov 9

10:00 pm - 11:24 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

9:40 am - 11:16 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$207United Airlines

Thu, Oct 15 - Mon, Oct 19

9:29 am - 10:50 amORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 21mnonstop

5:53 pm - 12:31 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

6h 38m1 stop Dallas/Fort Worth

$294Frontier

Wed, Oct 14 - Mon, Oct 19

6:00 am - 5:40 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

11h 40m1 stop Atlanta Hartsfield-Jackson

5:53 pm - 12:31 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

6h 38m1 stop Dallas/Fort Worth

$374Frontier

Wed, Oct 14 - Sat, Oct 17

6:00 am - 5:40 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

11h 40m1 stop Atlanta Hartsfield-Jackson

4:30 pm - 7:31 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

15h 01m1 stop Orlando

$388Frontier

Thu, Oct 15 - Mon, Oct 19

8:25 am - 12:13 pmMLI Moline Quad-City-STL Lambert-St Louis

3h 48m1 stop Chicago O'Hare Intl

8:00 am - 11:52 amSTL Lambert-St Louis-MLI Moline Quad-City

3h 52m1 stop Chicago O'Hare Intl

$442United Airlines

Mon, Oct 12 - Tue, Oct 13

2:12 pm - 3:43 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 31mnonstop

5:36 pm - 7:05 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 29mnonstop

$470United Airlines

Mon, Oct 12 - Wed, Oct 14

10:40 am - 12:13 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 33mnonstop

9:04 am - 10:40 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$470United Airlines

Tue, Oct 13 - Thu, Oct 15

8:05 am - 9:15 amMDW Chicago Midway-STL Lambert-St Louis

1h 10mnonstop

5:25 am - 6:30 amSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$507Southwest

Wed, Oct 14 - Mon, Oct 19

7:34 pm - 8:57 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 23mnonstop

5:27 pm - 7:05 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 38mnonstop

$508American Airlines

Tue, Oct 13 - Thu, Oct 15

9:25 am - 2:00 pmMDW Chicago Midway-STL Lambert-St Louis

4h 35m1 stop Kansas City

6:10 pm - 7:15 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$517Southwest

Wed, Oct 14 - Mon, Oct 19

8:05 am - 3:51 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

7h 46m1 stop Charlotte Douglas

11:31 am - 12:59 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 28mnonstop

$518American Airlines

Sat, Nov 21 - Sun, Nov 22

5:50 pm - 7:05 pmMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

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

1h 05mnonstop

$171Southwest

Sat, Nov 21 - Sun, Nov 22

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

1h 24mnonstop

8:12 pm - 9:48 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$172American Airlines

Fri, Nov 6 - Sun, Nov 8

6:30 am - 7:45 amMDW Chicago Midway-STL Lambert-St Louis

1h 15mnonstop

9:35 pm - 10:45 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 10mnonstop

$198Southwest

Thu, Dec 3 - Sun, Dec 6

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

1h 15mnonstop

7:15 pm - 8:20 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$198Southwest

Fri, Nov 6 - Sun, Nov 8

6:03 pm - 7:22 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 19mnonstop

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

1h 36mnonstop

$198American Airlines

Thu, Dec 3 - Sun, Dec 6

6:30 pm - 7:58 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 28mnonstop

1:43 pm - 3:24 pmSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 41mnonstop

$198American Airlines

Tue, Dec 8 - Wed, Dec 9

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

1h 14mnonstop

5:25 am - 6:58 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 33mnonstop

$204United Airlines

Thu, Nov 5 - Mon, Nov 9

10:00 pm - 11:24 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

9:40 am - 11:16 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$207United Airlines

Mon, Nov 16 - Mon, Nov 23

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

1h 15mnonstop

7:15 pm - 8:20 pmSTL Lambert-St Louis-MDW Chicago Midway

1h 05mnonstop

$207Southwest

Thu, Nov 5 - Mon, Nov 9

10:00 pm - 11:24 pmORD Chicago O'Hare Intl-STL Lambert-St Louis

1h 24mnonstop

9:40 am - 11:16 amSTL Lambert-St Louis-ORD Chicago O'Hare Intl

1h 36mnonstop

$208United Airlines

Low season	January
High season	July
Cheapest flight	$59

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 7% 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.