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Cheap flights from St. Louis to Florence from $429

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 9/4. 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

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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.
Multiple Airlines Logo
4:05 pm - 10:35 pm
STL
-
FLR
23h 30m
2 stops
Multiple Airlines Logo
8:15 am - 8:04 pm
FLR
-
STL
18h 49m
2 stops
$710Multiple Airlines
Sun, Apr 19 - Tue, May 5
Multiple Airlines Logo
8:55 am - 8:15 pm
STL
-
FLR
28h 20m
2 stops
Multiple Airlines Logo
2:40 pm - 6:41 pm
FLR
-
STL
35h 01m
2 stops
$713Multiple Airlines
Wed, Sep 2 - Tue, Sep 15
Multiple Airlines Logo
4:05 pm - 10:35 pm
STL
-
FLR
23h 30m
2 stops
Multiple Airlines Logo
6:30 am - 3:25 pm
FLR
-
STL
15h 55m
2 stops
$723Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
4:05 pm - 10:20 pm
STL
-
FLR
23h 15m
2 stops
Multiple Airlines Logo
6:30 am - 3:25 pm
FLR
-
STL
15h 55m
2 stops
$732Multiple Airlines
Fri, Apr 17 - Wed, Apr 22
Multiple Airlines Logo
6:15 am - 8:55 am
STL
-
FLR
19h 40m
3 stops
Multiple Airlines Logo
6:30 am - 3:25 pm
FLR
-
STL
15h 55m
2 stops
$734Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Delta Logo
7:25 am - 9:00 am
STL
-
FLR
18h 35m
2 stops
Delta Logo
6:30 am - 9:19 pm
FLR
-
STL
21h 49m
2 stops
$743Delta
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
6:00 am - 4:35 pm
STL
-
FLR
27h 35m
2 stops
United Airlines Logo
1:40 pm - 8:04 pm
FLR
-
STL
37h 24m
2 stops
$744United Airlines
Sun, Apr 26 - Tue, May 5
British Airways Logo
9:40 pm - 10:20 pm
STL
-
FLR
17h 40m
1 stop
British Airways Logo
7:05 am - 4:41 pm
FLR
-
STL
16h 36m
2 stops
$746British Airways
Sun, Apr 26 - Tue, May 5
British Airways Logo
2:33 pm - 11:35 am
STL
-
FLR
14h 02m
2 stops
British Airways Logo
7:05 am - 7:33 pm
FLR
-
STL
19h 28m
2 stops
$751British Airways
Tue, Apr 21 - Tue, Apr 28
British Airways Logo
7:05 am - 10:20 pm
STL
-
FLR
32h 15m
2 stops
British Airways Logo
7:05 am - 4:41 pm
FLR
-
STL
16h 36m
2 stops
$753British Airways
Fri, Apr 17 - Wed, Apr 22

Lufthansa flights from St. Louis to Florence

Our best Lufthansa deals on St. Louis to Florence flight tickets
Lufthansa
May 11
STL7:09 pmLambert-St Louis
18h 06m
2 stops
FLR8:15 pmFlorence Peretola
May 19
FLR10:25 amFlorence Peretola
20h 32m
2 stops
STL11:57 pmLambert-St Louis
$824
Lufthansa
May 11
STL7:09 pmLambert-St Louis
18h 06m
2 stops
FLR8:15 pmFlorence Peretola
May 19
FLR10:25 amFlorence Peretola
34h 00m
1 stop
STL1:25 pmLambert-St Louis
$835
Lufthansa
May 11
STL7:09 pmLambert-St Louis
14h 26m
2 stops
FLR4:35 pmFlorence Peretola
May 19
FLR9:50 amFlorence Peretola
21h 07m
2 stops
STL11:57 pmLambert-St Louis
$912

British Airways flights from St. Louis to Florence

Our best British Airways deals on St. Louis to Florence flight tickets
British Airways
Apr 26
STL9:40 pmLambert-St Louis
17h 40m
1 stop
FLR10:20 pmFlorence Peretola
May 5
FLR7:05 amFlorence Peretola
16h 36m
2 stops
STL4:41 pmLambert-St Louis
$746
British Airways
Apr 21
STL2:33 pmLambert-St Louis
14h 02m
2 stops
FLR11:35 amFlorence Peretola
Apr 28
FLR7:05 amFlorence Peretola
19h 28m
2 stops
STL7:33 pmLambert-St Louis
$751
British Airways
Apr 17
STL7:05 amLambert-St Louis
32h 15m
2 stops
FLR10:20 pmFlorence Peretola
Apr 22
FLR7:05 amFlorence Peretola
16h 36m
2 stops
STL4:41 pmLambert-St Louis
$753

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 March 10, 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 4/19

4:05 pm-10:35 pm

2 stops23h 30m

Florence Peretola

Tue 5/5

8:15 am-8:04 pm

2 stops18h 49m

$710

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 9/2

8:55 am-8:15 pm

2 stops28h 20m

Florence Peretola

Tue 9/15

2:40 pm-6:41 pm

2 stops35h 01m

$713

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 4/21

4:05 pm-10:35 pm

2 stops23h 30m

Florence Peretola

Tue 4/28

6:30 am-3:25 pm

2 stops15h 55m

$723

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Fri 4/17

4:05 pm-10:20 pm

2 stops23h 15m

Florence Peretola

Wed 4/22

6:30 am-3:25 pm

2 stops15h 55m

$732

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 4/21

6:15 am-8:55 am

3 stops19h 40m

Florence Peretola

Tue 4/28

6:30 am-3:25 pm

2 stops15h 55m

$734

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 4/22

7:25 am-9:00 am

2 stops18h 35m

Florence Peretola

Wed 4/29

6:30 am-9:19 pm

2 stops21h 49m

$743

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 4/26

6:00 am-4:35 pm

2 stops27h 35m

Florence Peretola

Tue 5/5

1:40 pm-8:04 pm

2 stops37h 24m

$744

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 4/26

9:40 pm-10:20 pm

1 stop17h 40m

Florence Peretola

Tue 5/5

7:05 am-4:41 pm

2 stops16h 36m

$746
Quickest round-trip

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 4/21

2:33 pm-11:35 am

2 stops14h 02m

Florence Peretola

Tue 4/28

7:05 am-7:33 pm

2 stops19h 28m

$751

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Fri 4/17

7:05 am-10:20 pm

2 stops32h 15m

Florence Peretola

Wed 4/22

7:05 am-4:41 pm

2 stops16h 36m

$753

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 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 62% 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 02m

Direct flights

None
The fastest flight from St. Louis to Florence takes 14h 02m
There are no direct flights from St. Louis to Florence. There are no popular flight routes from St. Louis to Florence.
Search flight deals

  • 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 02m, 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
7,781 reviews
Search British Airways flights
LufthansaPriceFrom $490Free CancellationRating
6.8
7,840 reviews
Search Lufthansa flights
DeltaPriceFrom $498Free CancellationRating
7.9
8,276 reviews
Search Delta flights
United AirlinesPriceFrom $500Free CancellationRating
7.4
9,409 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
Impruneta
Greve in Chianti
Monteriggioni
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.

An easier way to manage your Florence trip

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