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Flights Chicago – St Louis (Lambert-St. Louis), Frontier Airlines

1 passenger, economy

Flight schedule Chicago – St Louis (Lambert-St. Louis), Frontier Airlines

Compare prices, duration and stops

Frontier Airlines
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
£71
Frontier Airlines
F9 2292 Best price
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
£54
Frontier Airlines
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
£55
Frontier Airlines
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
£148
Frontier Airlines
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
£108
Frontier Airlines
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
£72
Frontier Airlines
F9 2292
11:25
Chicago, Chicago Midway International Airport (MDW)
Mon, 28 sep
6h 45min
1 stop
18:10
St Louis, Lambert-St. Louis (STL)
Mon, 28 sep
£144
Frontier Airlines
F9 1596
12:15
Chicago, O'Hare International Airport (ORD)
Wed, 28 oct
10h 25min
1 stop
22:40
St Louis, Lambert-St. Louis (STL)
Wed, 28 oct
£58
Frontier Airlines
F9 2198
00:50
Chicago, O'Hare International Airport (ORD)
Fri, 30 oct
21h 50min
1 stop
22:40
St Louis, Lambert-St. Louis (STL)
Fri, 30 oct
£88
Frontier Airlines
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
£94
Frontier Airlines
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
£85
Frontier Airlines
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
£64

Low price calendar

September 2026
Price chart (September 2026)
min: £45 · max: £129
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£71
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Good deal
£54
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£121
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£55
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£129
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£82
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£109
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£45

Popular Frontier Airlines flights Chicago – St Louis (Lambert-St. Louis)

All →
Flight Departure days Price from
F92292 MonSun £54
F91596 MonWedFriSun £55
F91483 FriSat £64
F91442 Mon £72
F92198 Fri £88

Popular destinations from Chicago

All →
CHI
Chicago — Orlando
United States → United States
ORL
from
£16
CHI
Chicago — Orlando
United States → United States
MCO
from
£16
CHI
Chicago — Atlanta
United States → United States
ATL
from
£16
CHI
Chicago — Houston
United States → United States
IAH
from
£17
CHI
Chicago — Houston
United States → United States
HOU
from
£17
CHI
Chicago — New York
United States → United States
NYC
from
£17
CHI
Chicago — Denver
United States → United States
DEN
from
£18
CHI
Chicago — Fort Lauderdale
United States → United States
FLL
from
£18
CHI
Chicago — Miami
United States → United States
MIA
from
£19

Popular destinations to St Louis

All →
DEN
Denver — St Louis
United States → United States
STL
from
£30
MSP
Minneapolis — St Louis
United States → United States
STL
from
£37
MIA
Miami — St Louis
United States → United States
STL
from
£51
BNA
Nashville — St Louis
United States → United States
STL
from
£53
HOU
Houston — St Louis
United States → United States
STL
from
£58
PHL
Philadelphia — St Louis
United States → United States
STL
from
£58
DFW
Dallas — St Louis
United States → United States
STL
from
£66
NYC
New York — St Louis
United States → United States
STL
from
£68

Flight statistics Chicago – St Louis (Lambert-St. Louis), Frontier Airlines

We gathered interesting facts about the flight for you

Cheapest flight

F9 2292

£54

Fastest flight

F9 2292

6h 45min

Average time

13h 58min

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
£41
American Airlines
American Airlines
Tue, Thu, Fri, Sat
Price from
£44
Allegiant Air
Allegiant Air
Sun
Price from
£109
United Airlines
United Airlines
Tue, Sun
Price from
£145
Contour Airlines
Contour Airlines
Thu
Price from
£161

Internet abroad

eSIM · United States

All plans

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3 GB

data

30

days

£7

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2 GB

data

15

days

£9

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5 GB

data

30

days

£10

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3 GB

data

30

days

£12

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5 GB

data

30

days

£17

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Frequently Asked Questions

The cheapest Frontier Airlines ticket Chicago – St Louis costs £54, flight F92292, departing at 11:25.
The fastest Frontier Airlines flight Chicago – St Louis takes 6h 45min, flight F92292, departing at 11:25.
The earliest Frontier Airlines flight Chicago – St Louis(F91596)departs at 15:26.