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Cheap flights from St. Louis to Florence from $405

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Florence departing on 9/26. 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 St. Louis to Florence

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
6:49 pm - 12:40 pm
STL
-
FLR
34h 51m
2 stops
Lufthansa Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$853Lufthansa
Sat, Oct 17 - Fri, Oct 23
Lufthansa Logo
6:49 pm - 12:40 pm
STL
-
FLR
34h 51m
2 stops
Lufthansa Logo
6:30 am - 3:38 pm
FLR
-
STL
16h 08m
2 stops
$857Lufthansa
Sat, Oct 17 - Fri, Oct 23
Air Canada Logo
2:40 pm - 9:40 am
STL
-
FLR
36h 00m
2 stops
Air Canada Logo
8:15 am - 6:26 pm
FLR
-
STL
41h 11m
2 stops
$862Air Canada
Sat, Oct 17 - Fri, Oct 23
Lufthansa Logo
6:49 pm - 12:50 pm
STL
-
FLR
35h 01m
2 stops
Lufthansa Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$865Lufthansa
Sat, Oct 17 - Fri, Oct 23
Lufthansa Logo
6:49 pm - 12:50 pm
STL
-
FLR
35h 01m
2 stops
Lufthansa Logo
6:30 am - 3:38 pm
FLR
-
STL
16h 08m
2 stops
$870Lufthansa
Sat, Oct 17 - Fri, Oct 23
United Airlines Logo
6:49 pm - 4:35 pm
STL
-
FLR
14h 46m
2 stops
United Airlines Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$909United Airlines
Sun, Oct 4 - Tue, Oct 13
Air Canada Logo
12:10 pm - 12:40 pm
STL
-
FLR
17h 30m
2 stops
Air Canada Logo
8:15 am - 6:41 pm
FLR
-
STL
41h 26m
2 stops
$912Air Canada
Mon, Oct 5 - Thu, Oct 8
Delta Logo
5:45 pm - 7:40 pm
STL
-
FLR
18h 55m
2 stops
Delta Logo
6:30 am - 6:01 pm
FLR
-
STL
18h 31m
2 stops
$916Delta
Wed, Sep 30 - Thu, Oct 8
Austrian Airlines Logo
1:27 pm - 2:05 pm
STL
-
FLR
17h 38m
2 stops
Austrian Airlines Logo
7:00 am - 4:26 pm
FLR
-
STL
16h 26m
2 stops
$917Austrian Airlines
Tue, Oct 6 - Tue, Oct 20
United Airlines Logo
10:23 am - 4:35 pm
STL
-
FLR
23h 12m
2 stops
United Airlines Logo
8:15 am - 8:00 pm
FLR
-
STL
18h 45m
2 stops
$918United Airlines
Mon, Oct 5 - Wed, Oct 7

British Airways flights from St. Louis to Florence

Our best British Airways deals on St. Louis to Florence flight tickets
British Airways
Jul 26
STL2:31 pmLambert-St Louis
24h 49m
2 stops
FLR10:20 pmFlorence Peretola
Aug 6
FLR7:05 amFlorence Peretola
23h 37m
2 stops
STL11:42 pmLambert-St Louis
$941
British Airways
Jul 26
STL9:40 pmLambert-St Louis
17h 40m
1 stop
FLR10:20 pmFlorence Peretola
Aug 6
FLR7:05 amFlorence Peretola
23h 37m
2 stops
STL11:42 pmLambert-St Louis
$943
British Airways
Jul 26
STL9:40 pmLambert-St Louis
17h 40m
1 stop
FLR10:20 pmFlorence Peretola
Aug 6
FLR12:25 pmFlorence Peretola
18h 34m
2 stops
STL11:59 pmLambert-St Louis
$1,007

United Airlines flights from St. Louis to Florence

Our best United Airlines deals on St. Louis to Florence flight tickets
United Airlines
Oct 4
STL6:49 pmLambert-St Louis
14h 46m
2 stops
FLR4:35 pmFlorence Peretola
Oct 13
FLR6:30 amFlorence Peretola
13h 55m
1 stop
STL1:25 pmLambert-St Louis
$909
United Airlines
Oct 5
STL10:23 amLambert-St Louis
23h 12m
2 stops
FLR4:35 pmFlorence Peretola
Oct 7
FLR8:15 amFlorence Peretola
18h 45m
2 stops
STL8:00 pmLambert-St Louis
$918
United Airlines
Oct 4
STL6:49 pmLambert-St Louis
14h 46m
2 stops
FLR4:35 pmFlorence Peretola
Oct 13
FLR6:30 amFlorence Peretola
16h 56m
2 stops
STL4:26 pmLambert-St Louis
$919

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Florence 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 April 30, 2026.
Use the filters below to find and compare flights from St. Louis to Florence that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

6:49 pm-12:40 pm

2 stops34h 51m

Florence Peretola

Fri 10/23

6:30 am-1:25 pm

1 stop13h 55m

$853

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

6:49 pm-12:40 pm

2 stops34h 51m

Florence Peretola

Fri 10/23

6:30 am-3:38 pm

2 stops16h 08m

$857

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

2:40 pm-9:40 am

2 stops36h 00m

Florence Peretola

Fri 10/23

8:15 am-6:26 pm

2 stops41h 11m

$862

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

6:49 pm-12:50 pm

2 stops35h 01m

Florence Peretola

Fri 10/23

6:30 am-1:25 pm

1 stop13h 55m

$865

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

6:49 pm-12:50 pm

2 stops35h 01m

Florence Peretola

Fri 10/23

6:30 am-3:38 pm

2 stops16h 08m

$870
Quickest round-trip

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 10/4

6:49 pm-4:35 pm

2 stops14h 46m

Florence Peretola

Tue 10/13

6:30 am-1:25 pm

1 stop13h 55m

$909

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 10/5

12:10 pm-12:40 pm

2 stops17h 30m

Florence Peretola

Thu 10/8

8:15 am-6:41 pm

2 stops41h 26m

$912

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 9/30

5:45 pm-7:40 pm

2 stops18h 55m

Florence Peretola

Thu 10/8

6:30 am-6:01 pm

2 stops18h 31m

$916

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 10/6

1:27 pm-2:05 pm

2 stops17h 38m

Florence Peretola

Tue 10/20

7:00 am-4:26 pm

2 stops16h 26m

$917

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 10/5

10:23 am-4:35 pm

2 stops23h 12m

Florence Peretola

Wed 10/7

8:15 am-8:00 pm

2 stops18h 45m

$918

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Florence from

How to get the cheapest flight ticket from St. Louis to Florence

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

What is the typical price of a round-trip flight between St. Louis and Florence?

What is the cheapest month to fly to Florence?

If you aren’t able to travel during the month of November, then book flights to Florence from St. Louis during December instead. Flights to Florence in December, while not as cheap as those in November, still average around $632.

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

You could potentially save up to 30% on your flight if you consider stops on a St. Louis to Florence flight.

When to book flights from St. Louis to Florence

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

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

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

Fastest flight time

17h 15m

Direct flights

None
The fastest flight from St. Louis to Florence takes 17h 15m
There are no direct flights from St. Louis to Florence. There are no popular flight routes from St. Louis to Florence.
Search flight deals

Frequently asked questions about flying from St. Louis to Florence

  • How far is Lambert-St Louis to Florence Peretola by plane?

    There are 4926.2 mi between Lambert-St Louis and Florence Peretola. Flights usually cover this in 17h 15m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Lambert-St Louis Airport to Florence Peretola Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Florence Peretola Airport?

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

  • What documentation or ID do you need to fly to Florence Peretola Airport?

    The travel and health documents you'll need for your trip to Florence Peretola Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Florence Peretola Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Florence?

Best airlines flying from St. Louis to Florence

Compare and see reviews for airlines that fly from St. Louis to Florence with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $489Free CancellationRating
6.7
7,937 reviews
Search British Airways flights
LufthansaPriceFrom $490Free CancellationRating
6.8
7,964 reviews
Search Lufthansa flights
DeltaPriceFrom $498Free CancellationRating
7.9
8,465 reviews
Search Delta flights
United AirlinesPriceFrom $500Free CancellationRating
7.4
9,678 reviews
Search United Airlines flights

Traveling to a place near Florence?

Book flights to Florence if you plan to visit one of these locations
Prato
Siena
San Gimignano
Montecatini Terme
Arezzo
Fiesole
Pistoia
Colle di Val d'Elsa
Monteriggioni
Greve in Chianti
Impruneta
Volterra
Poggibonsi

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Florence. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Florence from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for St. Louis to Florence flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to Florence now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Florence and let you know when they change.

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