Cheap flights Chicago to St Louis (Lambert-St. Louis)

From

To

Depart

Return

Passengers

1 passenger, economy

Cheap flights Chicago to St Louis

Compare prices, duration and stops

Filters

Stops

Direct only 1 stop

Price

44 £ 211 £ 211 £

Airlines

Allegiant Air American Airlines Contour Airlines Frontier Airlines Southwest Airlines United Airlines

UA 2000

19:07

Chicago, O'Hare International Airport (ORD)

Tue, 15 sep

1h 31min

Direct

20:38

St Louis, Lambert-St. Louis (STL)

Tue, 15 sep

211 £

AA 3069

04:05

Chicago, O'Hare International Airport (ORD)

Wed, 16 sep

1h 22min

Direct

05:27

St Louis, Lambert-St. Louis (STL)

Wed, 16 sep

121 £

AA 3069

04:05

Chicago, O'Hare International Airport (ORD)

Fri, 18 sep

1h 22min

Direct

05:27

St Louis, Lambert-St. Louis (STL)

Fri, 18 sep

121 £

F9 2292

11:25

Chicago, Chicago Midway International Airport (MDW)

Fri, 18 sep

6h 45min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Fri, 18 sep

107 £

F9 1483

11:30

Chicago, O'Hare International Airport (ORD)

Sat, 19 sep

12h 47min

1 stop

00:17

St Louis, Lambert-St. Louis (STL)

Sun, 20 sep +1

110 £

F9 1596

15:26

Chicago, O'Hare International Airport (ORD)

Sun, 20 sep

26h 44min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Mon, 21 sep +1

70 £

F9 2292

11:25

Chicago, Chicago Midway International Airport (MDW)

Mon, 21 sep

6h 45min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Mon, 21 sep

53 £

AA 3069

04:05

Chicago, O'Hare International Airport (ORD)

Tue, 22 sep

1h 22min

Direct

05:27

St Louis, Lambert-St. Louis (STL)

Tue, 22 sep

119 £

UA 2000

19:07

Chicago, O'Hare International Airport (ORD)

Tue, 22 sep

1h 31min

Direct

20:38

St Louis, Lambert-St. Louis (STL)

Tue, 22 sep

162 £

F9 1596

11:20

Chicago, O'Hare International Airport (ORD)

Wed, 23 sep

6h 50min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Wed, 23 sep

54 £

AA 2818

13:55

Chicago, O'Hare International Airport (ORD)

Thu, 24 sep

1h 23min

Direct

15:18

St Louis, Lambert-St. Louis (STL)

Thu, 24 sep

127 £

LF 3046

17:30

Chicago, O'Hare International Airport (ORD)

Thu, 24 sep

24h 51min

3 stops

18:21

St Louis, Lambert-St. Louis (STL)

Fri, 25 sep +1

158 £

F9 1483

11:30

Chicago, O'Hare International Airport (ORD)

Sat, 26 sep

12h 47min

1 stop

00:17

St Louis, Lambert-St. Louis (STL)

Sun, 27 sep +1

81 £

F9 2292

11:25

Chicago, Chicago Midway International Airport (MDW)

Sun, 27 sep

30h 45min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Mon, 28 sep +1

106 £

G4 341

20:53

Chicago, Chicago Rockford International Airport (RFD)

Sun, 27 sep

21h 28min

2 stops

18:21

St Louis, Lambert-St. Louis (STL)

Mon, 28 sep +1

107 £

F9 1442

00:28

Chicago, O'Hare International Airport (ORD)

Mon, 28 sep

17h 42min

1 stop

18:10

St Louis, Lambert-St. Louis (STL)

Mon, 28 sep

70 £

WN 3877 Best price

15:10

Chicago, Chicago Midway International Airport (MDW)

Wed, 30 sep

1h 10min

Direct

16:20

St Louis, Lambert-St. Louis (STL)

Wed, 30 sep

44 £

AA 2818

13:55

Chicago, O'Hare International Airport (ORD)

Fri, 2 oct

1h 23min

Direct

15:18

St Louis, Lambert-St. Louis (STL)

Fri, 2 oct

65 £

AA 2818

13:50

Chicago, O'Hare International Airport (ORD)

Sat, 3 oct

1h 23min

Direct

15:13

St Louis, Lambert-St. Louis (STL)

Sat, 3 oct

45 £

G4 344

18:56

Chicago, Chicago Rockford International Airport (RFD)

Sun, 4 oct

23h 25min

2 stops

18:21

St Louis, Lambert-St. Louis (STL)

Mon, 5 oct +1

116 £

WN 2779

01:50

Chicago, Chicago Midway International Airport (MDW)

Wed, 14 oct

1h 15min

Direct

03:05

St Louis, Lambert-St. Louis (STL)

Wed, 14 oct

100 £

AA 2208

14:30

Chicago, O'Hare International Airport (ORD)

Thu, 29 oct

1h 21min

Direct

15:51

St Louis, Lambert-St. Louis (STL)

Thu, 29 oct

67 £

WN 806

16:05

Chicago, Chicago Midway International Airport (MDW)

Thu, 29 oct

1h 10min

Direct

17:15

St Louis, Lambert-St. Louis (STL)

Thu, 29 oct

98 £

F9 1596

15:26

Chicago, O'Hare International Airport (ORD)

Fri, 30 oct

7h 14min

1 stop

22:40

St Louis, Lambert-St. Louis (STL)

Fri, 30 oct

92 £

WN 2015

11:05

Chicago, Chicago Midway International Airport (MDW)

Sat, 31 oct

1h 10min

Direct

12:15

St Louis, Lambert-St. Louis (STL)

Sat, 31 oct

100 £

F9 1596

16:26

Chicago, O'Hare International Airport (ORD)

Mon, 2 nov

7h 14min

1 stop

23:40

St Louis, Lambert-St. Louis (STL)

Mon, 2 nov

84 £

F9 1483

12:30

Chicago, O'Hare International Airport (ORD)

Fri, 6 nov

12h 44min

1 stop

01:14

St Louis, Lambert-St. Louis (STL)

Sat, 7 nov +1

63 £

WN 459

17:10

Chicago, Chicago Midway International Airport (MDW)

Fri, 6 nov

1h 10min

Direct

18:20

St Louis, Lambert-St. Louis (STL)

Fri, 6 nov

98 £

WN 2737

17:30

Chicago, Chicago Midway International Airport (MDW)

Mon, 14 dec

1h 10min

Direct

18:40

St Louis, Lambert-St. Louis (STL)

Mon, 14 dec

44 £

Low price calendar

September 2026

Price chart (September 2026)

min: 44 £ · max: 211 £

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211 £

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107 £

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70 £

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53 £

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119 £

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54 £

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81 £

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Good deal

44 £

Cheap flights Chicago to St Louis

Southwest Airlines

Mon, Wed, Thu, Fri, Sat

Price from

£44

American Airlines

Tue, Wed, Thu, Fri, Sat

Price from

£45

Frontier Airlines

Mon, Wed, Fri, Sat, Sun

Price from

£53

Allegiant Air

Sun

Price from

£107

Contour Airlines

Thu

Price from

£158

United Airlines

Tue

Price from

£162

Popular destinations from Chicago

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£16

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Chicago — Orlando

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from

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from

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Chicago — Houston

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from

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Chicago — Houston

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from

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Chicago — New York

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Chicago — Denver

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Chicago — Fort Lauderdale

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Chicago — Miami

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Popular destinations to St Louis

All →

DEN

Denver — St Louis

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from

£29

MSP

Minneapolis — St Louis

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from

£37

MIA

Miami — St Louis

United States → United States

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from

£50

BNA

Nashville — St Louis

United States → United States

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from

£53

HOU

Houston — St Louis

United States → United States

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from

£57

PHL

Philadelphia — St Louis

United States → United States

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from

£57

DFW

Dallas — St Louis

United States → United States

STL

from

£65

NYC

New York — St Louis

United States → United States

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from

£67

Cheap flights Chicago to St Louis

Interesting facts about the route

Flight time

1h 31min

Distance

415 km

Average price

£99

Most frequent flight

F9 1596

Passenger reviews

No reviews for this route yet

Internet abroad

eSIM · United States

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3 GB

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30

days

£7

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2 GB

data

15

days

£9

change

5 GB

data

30

days

£10

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3 GB

data

30

days

£12

change

5 GB

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30

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£17

Frequently Asked Questions

The average ticket price Chicago St Louis is £99. The cheapest ticket costs £107, operated by Frontier Airlines, flight 2292, departing Chicago on 18 September at 11:25, arriving St Louis on 18 September at 18:10.

The average flight time is 1 hour 31 minutes. The fastest flight takes 1 hour 22 minutes, flight 3069 operated by American Airlines, departing Chicago on 16 September at 04:05, arriving St Louis on 16 September at 05:27.

Flights on the Chicago - St Louis route are operated by the following airlines: American Airlines, Frontier Airlines, Allegiant Air, Contour Airlines, United Airlines, Southwest Airlines.

The distance from Chicago to St Louis is 415 km.