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Cheap flights from Florence to St. Louis from $539

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Florence to St. Louis departing on 6/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Florence to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 am - 7:31 pm
FLR
-
STL
20h 01m
2 stops
United Airlines Logo
8:15 pm - 2:10 pm
STL
-
FLR
34h 55m
2 stops
$845United Airlines
Sat, Apr 4 - Sat, Apr 11
Lufthansa Logo
7:10 pm - 1:25 pm
FLR
-
STL
25h 15m
1 stop
Lufthansa Logo
1:10 pm - 6:15 pm
STL
-
FLR
22h 05m
2 stops
$1,157Lufthansa
Sat, Apr 4 - Sat, Apr 11
United Airlines Logo
9:40 am - 9:07 pm
FLR
-
STL
17h 27m
2 stops
United Airlines Logo
3:24 pm - 1:35 pm
STL
-
FLR
16h 11m
2 stops
$1,876United Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
6:35 am - 3:29 pm
FLR
-
STL
38h 54m
2 stops
Multiple Airlines Logo
10:00 am - 9:45 am
STL
-
FLR
17h 45m
3 stops
$2,274Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
7:10 pm - 3:24 pm
FLR
-
STL
27h 14m
3 stops
Multiple Airlines Logo
4:05 pm - 12:40 pm
STL
-
FLR
13h 35m
2 stops
$2,301Multiple Airlines
Sat, Apr 4 - Sat, Apr 11
Lufthansa Logo
7:10 am - 10:59 pm
FLR
-
STL
21h 49m
2 stops
Lufthansa Logo
4:50 pm - 6:30 pm
STL
-
FLR
19h 40m
1 stop
$2,642Lufthansa
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
12:15 pm - 6:00 pm
FLR
-
STL
35h 45m
3 stops
Multiple Airlines Logo
8:17 am - 10:00 pm
STL
-
FLR
31h 43m
3 stops
$3,773Multiple Airlines
Mon, Mar 9 - Fri, Mar 13

United Airlines flights from Florence to St. Louis

Our best United Airlines deals on Florence to St. Louis flight tickets
United Airlines
Apr 4
FLR6:30 amFlorence Peretola
20h 01m
2 stops
STL7:31 pmLambert-St Louis
Apr 11
STL8:15 pmLambert-St Louis
34h 55m
2 stops
FLR2:10 pmFlorence Peretola
$845
United Airlines
Mar 9
FLR9:40 amFlorence Peretola
17h 27m
2 stops
STL9:07 pmLambert-St Louis
Mar 13
STL3:24 pmLambert-St Louis
16h 11m
2 stops
FLR1:35 pmFlorence Peretola
$1,876

Lufthansa flights from Florence to St. Louis

Our best Lufthansa deals on Florence to St. Louis flight tickets
Lufthansa
Apr 4
FLR7:10 pmFlorence Peretola
25h 15m
1 stop
STL1:25 pmLambert-St Louis
Apr 11
STL1:10 pmLambert-St Louis
22h 05m
2 stops
FLR6:15 pmFlorence Peretola
$1,157
Lufthansa
Mar 9
FLR7:10 amFlorence Peretola
21h 49m
2 stops
STL10:59 pmLambert-St Louis
Mar 13
STL4:50 pmLambert-St Louis
19h 40m
1 stop
FLR6:30 pmFlorence Peretola
$2,642

momondo Fare Finder

 
Customize your flight search to find flights from Florence to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 22, 2026.
Use the filters below to find and compare flights from Florence to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Sat 4/4

6:30 am-7:31 pm

2 stops20h 01m

Lambert-St Louis

Sat 4/11

8:15 pm-2:10 pm

2 stops34h 55m

$845

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Sat 4/4

7:10 pm-1:25 pm

1 stop25h 15m

Lambert-St Louis

Sat 4/11

1:10 pm-6:15 pm

2 stops22h 05m

$1,157

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Mon 3/9

9:40 am-9:07 pm

2 stops17h 27m

Lambert-St Louis

Fri 3/13

3:24 pm-1:35 pm

2 stops16h 11m

$1,876

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Mon 3/9

6:35 am-3:29 pm

2 stops38h 54m

Lambert-St Louis

Fri 3/13

10:00 am-9:45 am

3 stops17h 45m

$2,274

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Sat 4/4

7:10 pm-3:24 pm

3 stops27h 14m

Lambert-St Louis

Sat 4/11

4:05 pm-12:40 pm

2 stops13h 35m

$2,301

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Mon 3/9

7:10 am-10:59 pm

2 stops21h 49m

Lambert-St Louis

Fri 3/13

4:50 pm-6:30 pm

1 stop19h 40m

$2,642

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Mon 3/9

12:15 pm-6:00 pm

3 stops35h 45m

Lambert-St Louis

Fri 3/13

8:17 am-10:00 pm

3 stops31h 43m

$3,773

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Thu 6/11

7:05 am-8:30 pm

2 stops20h 25m

$539

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Thu 6/11

10:05 pm-11:57 pm

3 stops32h 52m

$625

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Sun 5/3

7:10 am-7:33 pm

2 stops19h 23m

$669

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Florence to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Florence to St. Louis flights?

You could potentially save up to 50% on your flight if you consider stops on a Florence to St. Louis flight.

When to book flights from Florence to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Florence to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Florence to St. Louis (FLR to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Florence to St. Louis

Fastest flight time

21h 24m

Direct flights

None
The fastest flight from Florence to St. Louis takes 21h 24m
There are no direct flights from Florence to St. Louis. There are no popular flight routes from Florence to St. Louis.
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  • How far is Florence Peretola to Lambert-St Louis by plane?

    The distance between Florence Peretola and Lambert-St Louis is about 4926.2 mi. By plane, this route typically takes 21h 24m.

  • When did momondo last update prices for flights from Florence Peretola Airport to Lambert-St Louis Airport?

    Prices for flights from Florence Peretola Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Florence Peretola Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Florence Peretola Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Wentzville
Fenton
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Florence to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Florence to St. Louis for you.

Can I find flights from Florence to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Florence to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Florence to St. Louis?

Once all potential Florence to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Florence to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Florence. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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