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Flights Chicago – St Louis (Lambert-St. Louis), Allegiant Air

1 passenger, economy

Flight schedule Chicago – St Louis (Lambert-St. Louis), Allegiant Air

Compare prices, duration and stops

Allegiant Air
G4 341 Best price
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
S$185
Allegiant Air
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
S$200

Low price calendar

September 2026
Price chart (September 2026)
min: S$76 · max: S$220
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S$191
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S$122
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S$92
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S$94
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S$140
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S$185
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S$76

Popular Allegiant Air flights Chicago – St Louis (Lambert-St. Louis)

All →
Flight Departure days Price from
G4341 Sun S$185
G4344 Sun S$200

Popular destinations from Chicago

All →
CHI
Chicago — Orlando
United States → United States
ORL
from
S$27
CHI
Chicago — Orlando
United States → United States
MCO
from
S$27
CHI
Chicago — Atlanta
United States → United States
ATL
from
S$28
CHI
Chicago — Houston
United States → United States
IAH
from
S$28
CHI
Chicago — Houston
United States → United States
HOU
from
S$28
CHI
Chicago — New York
United States → United States
NYC
from
S$30
CHI
Chicago — Denver
United States → United States
DEN
from
S$31
CHI
Chicago — Fort Lauderdale
United States → United States
FLL
from
S$31
CHI
Chicago — Miami
United States → United States
MIA
from
S$32

Popular destinations to St Louis

All →
DEN
Denver — St Louis
United States → United States
STL
from
S$51
MSP
Minneapolis — St Louis
United States → United States
STL
from
S$64
MIA
Miami — St Louis
United States → United States
STL
from
S$87
BNA
Nashville — St Louis
United States → United States
STL
from
S$91
HOU
Houston — St Louis
United States → United States
STL
from
S$98
PHL
Philadelphia — St Louis
United States → United States
STL
from
S$98
DFW
Dallas — St Louis
United States → United States
STL
from
S$112
NYC
New York — St Louis
United States → United States
STL
from
S$116

Flight statistics Chicago – St Louis (Lambert-St. Louis), Allegiant Air

We gathered interesting facts about the flight for you

Cheapest flight

G4 341

S$185

Fastest flight

G4 341

21h 28min

Average time

22h 26min

Distance

9 748 km

Passenger reviews

No reviews for this route yet

Other airlines Chicago – St Louis (Lambert-St. Louis)

Southwest Airlines
Southwest Airlines
Mon, Wed, Thu, Fri, Sat
Price from
S$69
American Airlines
American Airlines
Tue, Thu, Fri, Sat
Price from
S$74
Frontier Airlines
Frontier Airlines
Mon, Wed, Fri, Sat, Sun
Price from
S$92
United Airlines
United Airlines
Tue, Sun
Price from
S$247
Contour Airlines
Contour Airlines
Thu
Price from
S$274

Internet abroad

eSIM · United States

All plans

change

3 GB

data

30

days

S$11

Buy

change

2 GB

data

15

days

S$16

Buy

change

5 GB

data

30

days

S$18

Buy

change

3 GB

data

30

days

S$20

Buy

change

5 GB

data

30

days

S$29

Buy

Frequently Asked Questions

The cheapest Allegiant Air ticket Chicago – St Louis costs S$185, flight G4341, departing at 20:53.
The fastest Allegiant Air flight Chicago – St Louis takes 21h 28min, flight G4341, departing at 20:53.
The earliest Allegiant Air flight Chicago – St Louis(G4341)departs at 20:53.