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Cheap flights from St. Louis to Florence from $588

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 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Florence (STL-FLR)

Cheap round-trip flights

United Airlines Logo
1:00 pm - 1:35 pmSTL-FLR
17h 35m2 stops
United Airlines Logo
6:30 am - 1:55 pmFLR-STL
14h 25m1 stop
$663United Airlines
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Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
1:00 pm - 1:35 pmSTL-FLR
17h 35m2 stops
United Airlines Logo
6:30 am - 10:45 pmFLR-STL
23h 15m2 stops
$673United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Lufthansa Logo
3:50 pm - 6:30 pmSTL-FLR
19h 40m1 stop
Lufthansa Logo
6:30 am - 1:55 pmFLR-STL
14h 25m1 stop
$733Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
Lufthansa Logo
3:50 pm - 6:30 pmSTL-FLR
19h 40m1 stop
Lufthansa Logo
6:30 am - 1:55 pmFLR-STL
14h 25m1 stop
$734Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
Lufthansa Logo
7:04 pm - 8:15 pmSTL-FLR
18h 11m2 stops
Lufthansa Logo
6:40 am - 1:30 pmFLR-STL
13h 50m1 stop
$753Lufthansa
Find Deal
Mon, Sep 22 - Fri, Oct 10
British Airways Logo
8:40 am - 11:45 amSTL-FLR
20h 05m2 stops
British Airways Logo
3:55 pm - 7:27 pmFLR-STL
34h 32m2 stops
$754British Airways
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Thu, Nov 20 - Tue, Nov 25
Logo
4:05 pm - 10:35 pmSTL-FLR
23h 30m2 stops
Logo
6:40 am - 3:18 pmFLR-STL
39h 38m2 stops
$758
Find Deal
Tue, Sep 30 - Tue, Oct 7
British Airways Logo
7:59 pm - 10:20 pmSTL-FLR
19h 21m2 stops
British Airways Logo
7:05 am - 8:51 pmFLR-STL
20h 46m2 stops
$774British Airways
Find Deal
Mon, Sep 22 - Fri, Oct 10
Logo
9:15 am - 9:40 amSTL-FLR
17h 25m2 stops
Logo
5:15 pm - 11:42 pmFLR-STL
37h 27m2 stops
$776
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Mon, Sep 15 - Sat, Dec 13
Austrian Airlines Logo
12:25 pm - 10:15 amSTL-FLR
14h 50m2 stops
Austrian Airlines Logo
6:30 pm - 11:57 pmFLR-STL
36h 27m2 stops
$851Austrian Airlines
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Sun, Oct 12 - Sat, Oct 18

Iberia flights from St. Louis to Florence

Our best Iberia deals on St. Louis to Florence flight tickets
Iberia
Sep 15
STL9:56 amLambert-St Louis
26h 39m
2 stops
FLR7:35 pmFlorence Peretola
Sep 21
FLR8:20 pmFlorence Peretola
31h 05m
2 stops
STL8:25 pmLambert-St Louis
$895
Find similar
Iberia
Nov 25
STL8:40 amLambert-St Louis
25h 10m
2 stops
FLR4:50 pmFlorence Peretola
Nov 29
FLR1:15 pmFlorence Peretola
38h 40m
2 stops
STL8:55 pmLambert-St Louis
$1,267
Find similar
Iberia
Aug 21
STL10:08 amLambert-St Louis
29h 57m
2 stops
FLR11:05 pmFlorence Peretola
Aug 23
FLR1:10 pmFlorence Peretola
38h 37m
2 stops
STL8:47 pmLambert-St Louis
$1,738
Find similar

Lufthansa flights from St. Louis to Florence

Our best Lufthansa deals on St. Louis to Florence flight tickets
Lufthansa
Dec 3
STL3:50 pmLambert-St Louis
19h 40m
1 stop
FLR6:30 pmFlorence Peretola
Dec 7
FLR6:30 amFlorence Peretola
14h 25m
1 stop
STL1:55 pmLambert-St Louis
$733
Find similar
Lufthansa
Dec 3
STL3:50 pmLambert-St Louis
19h 40m
1 stop
FLR6:30 pmFlorence Peretola
Dec 7
FLR6:30 amFlorence Peretola
14h 25m
1 stop
STL1:55 pmLambert-St Louis
$734
Find similar
Lufthansa
Sep 22
STL7:04 pmLambert-St Louis
18h 11m
2 stops
FLR8:15 pmFlorence Peretola
Oct 10
FLR6:40 amFlorence Peretola
13h 50m
1 stop
STL1:30 pmLambert-St Louis
$753
Find similar

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 August 18, 2025.
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

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 12/3

1:00 pm-1:35 pm

2 stops17h 35m

Florence Peretola

Sun 12/7

6:30 am-1:55 pm

1 stop14h 25m

$663

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 12/3

1:00 pm-1:35 pm

2 stops17h 35m

Florence Peretola

Sun 12/7

6:30 am-10:45 pm

2 stops23h 15m

$673

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 12/3

3:50 pm-6:30 pm

1 stop19h 40m

Florence Peretola

Sun 12/7

6:30 am-1:55 pm

1 stop14h 25m

$733

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Wed 12/3

3:50 pm-6:30 pm

1 stop19h 40m

Florence Peretola

Sun 12/7

6:30 am-1:55 pm

1 stop14h 25m

$734

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 9/22

7:04 pm-8:15 pm

2 stops18h 11m

Florence Peretola

Fri 10/10

6:40 am-1:30 pm

1 stop13h 50m

$753

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Thu 11/20

8:40 am-11:45 am

2 stops20h 05m

Florence Peretola

Tue 11/25

3:55 pm-7:27 pm

2 stops34h 32m

$754

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 9/30

4:05 pm-10:35 pm

2 stops23h 30m

Florence Peretola

Tue 10/7

6:40 am-3:18 pm

2 stops39h 38m

$758

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 9/22

7:59 pm-10:20 pm

2 stops19h 21m

Florence Peretola

Fri 10/10

7:05 am-8:51 pm

2 stops20h 46m

$774

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 9/15

9:15 am-9:40 am

2 stops17h 25m

Florence Peretola

Sat 12/13

5:15 pm-11:42 pm

2 stops37h 27m

$776

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 10/12

12:25 pm-10:15 am

2 stops14h 50m

Florence Peretola

Sat 10/18

6:30 pm-11:57 pm

2 stops36h 27m

$851

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 April instead. Flights to Florence in April, while not as cheap as those in November, still average around $899.

What is the cheapest day to depart on your flight to Florence?

On average, the least expensive day to fly to Florence from St. Louis is on a Monday. momondo users have found tickets for Monday departures for as low as $1,112. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Florence on Thursday is $1,880.

What is the cheapest time of day to depart on your flight to Florence?

Our data shows that the cheapest St. Louis to Florence flights are usually those with departure times in the evening. Our users have found flights to Florence in the evening for as low as $1,229. Flights to Florence are more costly at noon, with an average ticket price of $1,458. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You could potentially save up to 73% 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

Best Price Found

$588

Fastest flight time

14h 30m

Direct flights

None

Airports in Florence

1 airport
The best one-way flight to Florence from St. Louis in the past 72 hours is $588. The best round-trip flight deal from St. Louis to Florence found on momondo in the last 72 hours is $663.
The fastest flight from St. Louis to Florence takes 14h 30m
There are no direct flights from St. Louis to Florence. Popular non-direct route for this connection is Lambert-St Louis Airport - Florence Peretola Airport.
There is 1 airport near Florence: Florence Peretola (FLR)
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 30m, 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
United AirlinesPriceFrom $633Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $717Free CancellationRating
8.0
7,981 reviews
Search Delta flights
LufthansaPriceFrom $722Free CancellationRating
6.8
7,330 reviews
Search Lufthansa flights
British AirwaysPriceFrom $724Free CancellationRating
6.6
7,277 reviews
Search British Airways flights

Traveling to a place near Florence?

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

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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