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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, Рокфорд (RFD)
Sun, 27 sep
21h 28min
2 stops
18:21
St Louis, Lambert-St. Louis (STL)
Mon, 28 sep +1
145 $
Allegiant Air
G4 344
18:56
Chicago, Рокфорд (RFD)
Sun, 4 oct
23h 25min
2 stops
18:21
St Louis, Lambert-St. Louis (STL)
Mon, 5 oct +1
157 $

Low price calendar

September 2026
Price chart (September 2026)
min: 59 $ · max: 286 $
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286 $
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164 $
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145 $
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149 $
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95 $
21
Good deal
72 $
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162 $
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Good deal
74 $
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172 $
25
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110 $
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145 $
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95 $
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30
Good deal
59 $

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

All →
Flight Departure days Price from
G4341 Sun $145
G4344 Sun $157

Popular destinations from Chicago

All →
CHI
Chicago — Orlando
United States → United States
ORL
from
$21
CHI
Chicago — Orlando
United States → United States
MCO
from
$21
CHI
Chicago — Atlanta
United States → United States
ATL
from
$22
CHI
Chicago — Houston
United States → United States
IAH
from
$22
CHI
Chicago — Houston
United States → United States
HOU
from
$22
CHI
Chicago — New York
United States → United States
NYC
from
$23
CHI
Chicago — Denver
United States → United States
DEN
from
$24
CHI
Chicago — Fort Lauderdale
United States → United States
FLL
from
$24
CHI
Chicago — Miami
United States → United States
MIA
from
$25

Popular destinations to St Louis

All →
DEN
Denver — St Louis
United States → United States
STL
from
$40
MSP
Minneapolis — St Louis
United States → United States
STL
from
$50
MIA
Miami — St Louis
United States → United States
STL
from
$68
BNA
Nashville — St Louis
United States → United States
STL
from
$71
HOU
Houston — St Louis
United States → United States
STL
from
$77
PHL
Philadelphia — St Louis
United States → United States
STL
from
$77
DFW
Dallas — St Louis
United States → United States
STL
from
$88
NYC
New York — St Louis
United States → United States
STL
from
$91

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

We gathered interesting facts about the flight for you

Cheapest flight

G4 341

$145

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
$60
American Airlines
American Airlines
Tue, Wed, Thu, Fri, Sat
Price from
$61
Frontier Airlines
Frontier Airlines
Mon, Wed, Fri, Sat, Sun
Price from
$72
Contour Airlines
Contour Airlines
Thu
Price from
$215
United Airlines
United Airlines
Tue
Price from
$219

Internet abroad

eSIM · United States

All plans

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3 GB

data

30

days

$9

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2 GB

data

15

days

$13

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5 GB

data

30

days

$14

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3 GB

data

30

days

$16

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5 GB

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30

days

$23

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Frequently Asked Questions

The cheapest Allegiant Air ticket Chicago – St Louis costs $145, 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.