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Cheap flights from St. Louis to Florence from $446

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 10/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Florence

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
12:10 pm - 12:40 pm
STL
-
FLR
17h 30m
2 stops
Air Canada Logo
6:30 am - 6:42 pm
FLR
-
STL
19h 12m
2 stops
$734Air Canada
Sun, Aug 9 - Tue, Aug 25
Lufthansa Logo
11:45 am - 10:00 pm
STL
-
FLR
27h 15m
2 stops
Lufthansa Logo
6:30 am - 1:45 pm
FLR
-
STL
14h 15m
1 stop
$766Lufthansa
Tue, Nov 10 - Wed, Nov 25
United Airlines Logo
7:30 am - 4:30 pm
STL
-
FLR
26h 00m
2 stops
United Airlines Logo
6:30 am - 1:45 pm
FLR
-
STL
14h 15m
1 stop
$773United Airlines
Tue, Nov 10 - Wed, Nov 25
Delta Logo
5:45 pm - 7:50 pm
STL
-
FLR
19h 05m
2 stops
Delta Logo
6:30 am - 11:39 pm
FLR
-
STL
24h 09m
2 stops
$781Delta
Tue, Nov 10 - Wed, Nov 25
Lufthansa Logo
3:30 pm - 12:50 pm
STL
-
FLR
14h 20m
1 stop
Lufthansa Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$783Lufthansa
Sun, Aug 9 - Tue, Aug 25
American Airlines Logo
9:47 am - 11:20 am
STL
-
FLR
18h 33m
3 stops
American Airlines Logo
12:10 pm - 11:56 pm
FLR
-
STL
18h 46m
2 stops
$791American Airlines
Tue, Nov 10 - Wed, Nov 25
Lufthansa Logo
1:13 pm - 12:40 pm
STL
-
FLR
16h 27m
2 stops
Lufthansa Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$802Lufthansa
Sun, Aug 9 - Tue, Aug 25
Multiple Airlines Logo
4:15 pm - 6:30 pm
STL
-
FLR
19h 15m
2 stops
Multiple Airlines Logo
6:30 am - 7:25 pm
FLR
-
STL
19h 55m
3 stops
$807Multiple Airlines
Tue, Nov 10 - Wed, Nov 25
United Airlines Logo
5:36 pm - 12:40 pm
STL
-
FLR
36h 04m
2 stops
United Airlines Logo
6:30 am - 1:25 pm
FLR
-
STL
13h 55m
1 stop
$852United Airlines
Sat, Oct 17 - Fri, Oct 23
United Airlines Logo
5:36 pm - 12:40 pm
STL
-
FLR
36h 04m
2 stops
United Airlines Logo
6:30 am - 9:09 pm
FLR
-
STL
21h 39m
2 stops
$856United Airlines
Sat, Oct 17 - Fri, Oct 23

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Lufthansa flights from St. Louis to Florence

Our best Lufthansa deals on St. Louis to Florence flight tickets
Lufthansa
Nov 10
STL11:45 amLambert-St Louis
27h 15m
2 stops
FLR10:00 pmFlorence Peretola
Nov 25
FLR6:30 amFlorence Peretola
14h 15m
1 stop
STL1:45 pmLambert-St Louis
$766
Lufthansa
Aug 9
STL3:30 pmLambert-St Louis
14h 20m
1 stop
FLR12:50 pmFlorence Peretola
Aug 25
FLR6:30 amFlorence Peretola
13h 55m
1 stop
STL1:25 pmLambert-St Louis
$783
Lufthansa
Aug 9
STL1:13 pmLambert-St Louis
16h 27m
2 stops
FLR12:40 pmFlorence Peretola
Aug 25
FLR6:30 amFlorence Peretola
13h 55m
1 stop
STL1:25 pmLambert-St Louis
$802

Delta flights from St. Louis to Florence

Our best Delta deals on St. Louis to Florence flight tickets
Delta
Nov 10
STL5:45 pmLambert-St Louis
19h 05m
2 stops
FLR7:50 pmFlorence Peretola
Nov 25
FLR6:30 amFlorence Peretola
24h 09m
2 stops
STL11:39 pmLambert-St Louis
$781
Delta
Oct 4
STL10:00 amLambert-St Louis
15h 55m
2 stops
FLR8:55 amFlorence Peretola
Oct 9
FLR6:30 amFlorence Peretola
24h 09m
2 stops
STL11:39 pmLambert-St Louis
$915
Delta
Oct 3
STL1:30 pmLambert-St Louis
15h 00m
2 stops
FLR11:30 amFlorence Peretola
Oct 9
FLR6:30 amFlorence Peretola
18h 31m
2 stops
STL6:01 pmLambert-St Louis
$975

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 June 19, 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

Sun 8/9

12:10 pm-12:40 pm

2 stops17h 30m

Florence Peretola

Tue 8/25

6:30 am-6:42 pm

2 stops19h 12m

$734

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

11:45 am-10:00 pm

2 stops27h 15m

Florence Peretola

Wed 11/25

6:30 am-1:45 pm

1 stop14h 15m

$766

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

7:30 am-4:30 pm

2 stops26h 00m

Florence Peretola

Wed 11/25

6:30 am-1:45 pm

1 stop14h 15m

$773

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

5:45 pm-7:50 pm

2 stops19h 05m

Florence Peretola

Wed 11/25

6:30 am-11:39 pm

2 stops24h 09m

$781
Quickest round-trip

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 8/9

3:30 pm-12:50 pm

1 stop14h 20m

Florence Peretola

Tue 8/25

6:30 am-1:25 pm

1 stop13h 55m

$783

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

9:47 am-11:20 am

3 stops18h 33m

Florence Peretola

Wed 11/25

12:10 pm-11:56 pm

2 stops18h 46m

$791

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 8/9

1:13 pm-12:40 pm

2 stops16h 27m

Florence Peretola

Tue 8/25

6:30 am-1:25 pm

1 stop13h 55m

$802

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

4:15 pm-6:30 pm

2 stops19h 15m

Florence Peretola

Wed 11/25

6:30 am-7:25 pm

3 stops19h 55m

$807

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

5:36 pm-12:40 pm

2 stops36h 04m

Florence Peretola

Fri 10/23

6:30 am-1:25 pm

1 stop13h 55m

$852

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

5:36 pm-12:40 pm

2 stops36h 04m

Florence Peretola

Fri 10/23

6:30 am-9:09 pm

2 stops21h 39m

$856

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 December, then book flights to Florence from St. Louis during November instead. Flights to Florence in November, while not as cheap as those in December, still average around $658.

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

You could potentially save up to 10% 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

14h 20m

Direct flights

None
The fastest flight from St. Louis to Florence takes 14h 20m
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 14h 20m, 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
8,055 reviews
Search British Airways flights
LufthansaPriceFrom $490Free CancellationRating
6.8
8,082 reviews
Search Lufthansa flights
DeltaPriceFrom $498Free CancellationRating
7.8
8,419 reviews
Search Delta flights
United AirlinesPriceFrom $500Free CancellationRating
7.4
9,865 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
Fiesole
Pistoia
Arezzo
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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