What is the cheapest airline that flies from Lambert-St Louis to Italy?

Lufthansa, American Airlines, and British Airways are the most popular carriers operating from Lambert-St Louis to Italy

What airlines fly to Italy?

United Airlines, American Airlines and Lufthansa are the top three most popular airlines that fly to Italy from St. Louis according to our data. United Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Italy. Keep in mind that there are 7 different airlines that fly to Italy on a routine basis, so you have a few additional options to choose from.

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

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

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

The number of operators available for flights from Lambert-St Louis Airport to Italy is 7 as of May 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Italy?

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 Italy.

What documentation or ID do you need to fly to Italy?

The travel and health documents required for your trip to Italy can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Italy. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$357 Cheap Flights from St. Louis to Italy in 2026

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Find the cheapest flights from St. Louis to Italy

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 8:55 am

STL

CTA

19h 10m

2 stops

10:55 am - 11:18 pm

CTA

STL

19h 23m

2 stops

$761Delta

Wed, Nov 11 - Wed, Nov 18

3:42 pm - 6:35 pm

STL

FCO

19h 53m

2 stops

9:40 am - 11:37 pm

FCO

STL

20h 57m

2 stops

$773Scandinavian Airlines

Sun, Sep 6 - Thu, Sep 17

7:30 am - 4:30 pm

STL

FLR

26h 00m

2 stops

6:30 am - 1:55 pm

FLR

STL

14h 25m

1 stop

$774United Airlines

Tue, Nov 10 - Wed, Nov 25

11:45 am - 11:00 am

STL

FLR

16h 15m

2 stops

6:30 am - 1:55 pm

FLR

STL

14h 25m

1 stop

$775United Airlines

Tue, Nov 10 - Wed, Nov 25

12:10 pm - 9:15 am

STL

FCO

14h 05m

1 stop

2:20 pm - 3:38 pm

FCO

STL

32h 18m

2 stops

$804Air Canada

Wed, Aug 5 - Wed, Aug 19

2:08 pm - 12:25 pm

STL

FCO

15h 17m

2 stops

7:25 am - 7:29 pm

FCO

STL

19h 04m

2 stops

$807American Airlines

Sun, Nov 8 - Tue, Nov 17

8:00 am - 9:15 am

STL

FCO

18h 15m

2 stops

11:30 am - 12:02 pm

FCO

STL

31h 32m

2 stops

$808Air Canada

Wed, Aug 5 - Wed, Aug 19

6:03 am - 10:05 am

STL

MXP

21h 02m

1 stop

2:20 pm - 11:59 pm

MXP

STL

16h 39m

2 stops

$836American Airlines

Wed, Aug 12 - Wed, Aug 26

7:01 pm - 12:40 pm

STL

FLR

34h 39m

2 stops

6:30 am - 9:21 pm

FLR

STL

21h 51m

2 stops

$857Lufthansa

Sat, Oct 17 - Fri, Oct 23

12:27 pm - 1:00 pm

STL

LIN

17h 33m

2 stops

6:50 am - 1:25 pm

LIN

STL

13h 35m

1 stop

$876Lufthansa

Wed, Aug 12 - Wed, Aug 26

Lufthansa flights from St. Louis to Italy

Our best Lufthansa deals on St. Louis to Italy flight tickets

Lufthansa

Aug 8

STL7:05 pmLambert-St Louis

31h 55m

2 stops

FCO10:00 amRome Fiumicino

Aug 20

FCO1:20 pmRome Fiumicino

33h 18m

2 stops

STL3:38 pmLambert-St Louis

$842

Lufthansa

Aug 9

STL1:13 pmLambert-St Louis

22h 02m

2 stops

FCO6:15 pmRome Fiumicino

Aug 18

FCO3:55 pmRome Fiumicino

30h 43m

2 stops

STL3:38 pmLambert-St Louis

$843

Lufthansa

Aug 5

STL1:13 pmLambert-St Louis

15h 37m

2 stops

FCO11:50 amRome Fiumicino

Aug 18

FCO3:55 pmRome Fiumicino

30h 43m

2 stops

STL3:38 pmLambert-St Louis

$844

United Airlines flights from St. Louis to Italy

Our best United Airlines deals on St. Louis to Italy flight tickets

United Airlines

Nov 10

STL7:30 amLambert-St Louis

26h 00m

2 stops

FLR4:30 pmFlorence Peretola

Nov 25

FLR6:30 amFlorence Peretola

14h 25m

1 stop

STL1:55 pmLambert-St Louis

$774

United Airlines

Nov 10

STL11:45 amLambert-St Louis

16h 15m

2 stops

FLR11:00 amFlorence Peretola

Nov 25

FLR6:30 amFlorence Peretola

14h 25m

1 stop

STL1:55 pmLambert-St Louis

$775

United Airlines

Aug 8

STL5:33 pmLambert-St Louis

31h 22m

1 stop

FCO7:55 amRome Fiumicino

Aug 19

FCO2:20 pmRome Fiumicino

35h 22m

1 stop

STL6:42 pmLambert-St Louis

$806

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCatania

STL - CTA

STLCTA

Lambert-St Louis

Wed 11/11

6:45 am-8:55 am

2 stops19h 10m

Catania Fontanarossa

Wed 11/18

10:55 am-11:18 pm

2 stops19h 23m

$761

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 9/6

3:42 pm-6:35 pm

2 stops19h 53m

Rome Fiumicino

Thu 9/17

9:40 am-11:37 pm

2 stops20h 57m

$773

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-1:55 pm

1 stop14h 25m

$774

Quickest round-trip

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

11:45 am-11:00 am

2 stops16h 15m

Florence Peretola

Wed 11/25

6:30 am-1:55 pm

1 stop14h 25m

$775

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

2:20 pm-3:38 pm

2 stops32h 18m

$804

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

2:08 pm-12:25 pm

2 stops15h 17m

Rome Fiumicino

Tue 11/17

7:25 am-7:29 pm

2 stops19h 04m

$807

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

8:00 am-9:15 am

2 stops18h 15m

Rome Fiumicino

Wed 8/19

11:30 am-12:02 pm

2 stops31h 32m

$808

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Wed 8/12

6:03 am-10:05 am

1 stop21h 02m

Milan Malpensa

Wed 8/26

2:20 pm-11:59 pm

2 stops16h 39m

$836

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

7:01 pm-12:40 pm

2 stops34h 39m

Florence Peretola

Fri 10/23

6:30 am-9:21 pm

2 stops21h 51m

$857

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 8/12

12:27 pm-1:00 pm

2 stops17h 33m

Milan Linate

Wed 8/26

6:50 am-1:25 pm

1 stop13h 35m

$876

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Italy?

The cheapest month to fly to Italy from St. Louis is in March. Flight prices, which tend to average around $441, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Italy from St. Louis during January instead. Flights to Italy in January, while not as cheap as those in March, still average around $442.

How far in advance should I book a flight from St. Louis to Italy?

You are more likely to see cheaper flights to Italy from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Italy for around $930 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Italy from St. Louis for as low as $754 on momondo.

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

You could potentially save up to 29% on your flight if you consider stops on a St. Louis to Italy flight.

Cheap St. Louis to Italy flight deals and tips

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

Fastest flight time	11h 30m
Direct flights	None

The fastest flight from St. Louis to Italy takes 11h 30m

There are no direct flights from St. Louis to Italy. There are no popular flight routes from St. Louis to Italy.

Search flight deals

Frequently asked questions about flying from St. Louis to Italy

When did momondo last update prices for flights from Lambert-St Louis Airport to Italy?
Prices for flights from Lambert-St Louis Airport to Italy are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Italy?
The number of operators available for flights from Lambert-St Louis Airport to Italy is 7 as of May 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Italy?
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 Italy.
What documentation or ID do you need to fly to Italy?
The travel and health documents required for your trip to Italy can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Italy. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Italy

Compare and see reviews for airlines that fly from St. Louis to Italy with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $472	Free Cancellation	Rating 6.7 7,982 reviews	Search British Airways flights
United Airlines	PriceFrom $472	Free Cancellation	Rating 7.4 9,727 reviews	Search United Airlines flights
Lufthansa	PriceFrom $493	Free Cancellation	Rating 6.8 8,004 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,517 reviews	Search KLM flights
Air Canada	PriceFrom $552	Free Cancellation	Rating 7.1 11,046 reviews	Search Air Canada flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,455 reviews	Search Delta flights
American Airlines	PriceFrom $559	Free Cancellation	Rating 7.1 11,662 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Italy. momondo saves you time and could save you money on your trip.

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

Flights from St. Louis to Italy with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis to Italy 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 St. Louis to Italy right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Italy flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.