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

Lufthansa, British Airways, and KLM 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 34% 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 January 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.

$281 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.

6:55 pm - 4:40 pm

STL

MXP

14h 45m

2 stops

6:55 am - 1:55 pm

MXP

STL

14h 00m

1 stop

$431Lufthansa

Sun, Feb 22 - Sun, Mar 8

6:55 pm - 6:50 pm

STL

LIN

16h 55m

2 stops

6:15 am - 1:55 pm

LIN

STL

14h 40m

1 stop

$435Lufthansa

Sun, Feb 22 - Sun, Mar 8

11:39 am - 7:30 am

STL

MXP

12h 51m

1 stop

1:05 pm - 10:59 pm

MXP

STL

40h 54m

2 stops

$472United Airlines

Tue, Feb 24 - Tue, Mar 3

9:55 am - 9:55 am

STL

MXP

17h 00m

2 stops

1:05 pm - 9:05 pm

MXP

STL

39h 00m

2 stops

$475United Airlines

Tue, Feb 24 - Tue, Mar 3

11:59 am - 11:50 am

STL

NAP

16h 51m

2 stops

1:55 pm - 11:48 pm

NAP

STL

40h 53m

2 stops

$488British Airways

Mon, Feb 23 - Mon, Mar 2

6:50 pm - 5:45 pm

STL

LIN

16h 55m

2 stops

11:10 am - 11:44 pm

LIN

STL

19h 34m

2 stops

$495British Airways

Thu, Mar 19 - Tue, Mar 31

1:13 pm - 11:20 am

STL

VCE

15h 07m

1 stop

6:30 am - 4:32 pm

VCE

STL

16h 02m

2 stops

$496Delta

Sun, Mar 1 - Tue, Mar 17

7:10 am - 8:55 am

STL

FLR

18h 45m

2 stops

12:20 pm - 11:36 pm

FLR

STL

18h 16m

2 stops

$500Delta

Tue, Feb 24 - Wed, Mar 4

4:05 pm - 10:15 pm

STL

FLR

23h 10m

2 stops

2:15 pm - 3:29 pm

FLR

STL

32h 14m

2 stops

$515Air Canada

Thu, Feb 26 - Thu, Mar 5

4:05 pm - 10:15 pm

STL

FLR

23h 10m

2 stops

6:30 am - 3:29 pm

FLR

STL

39h 59m

2 stops

$517Air Canada

Thu, Feb 26 - Wed, Mar 4

American Airlines flights from St. Louis to Italy

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

American Airlines

Mar 19

STL11:59 amLambert-St Louis

17h 31m

2 stops

LIN11:30 amMilan Linate

Mar 31

LIN11:10 amMilan Linate

19h 34m

2 stops

STL11:44 pmLambert-St Louis

$511

American Airlines

Apr 23

STL12:11 pmLambert-St Louis

17h 19m

2 stops

LIN12:30 pmMilan Linate

Apr 27

LIN7:50 amMilan Linate

17h 37m

2 stops

STL6:27 pmLambert-St Louis

$600

American Airlines

Jan 30

STL3:37 pmLambert-St Louis

18h 18m

2 stops

VCE4:55 pmVenice Marco Polo

Feb 6

VCE6:20 amVenice Marco Polo

18h 54m

2 stops

STL6:14 pmLambert-St Louis

$700

United Airlines flights from St. Louis to Italy

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

United Airlines

Feb 24

STL11:39 amLambert-St Louis

12h 51m

1 stop

MXP7:30 amMilan Malpensa

Mar 3

MXP1:05 pmMilan Malpensa

40h 54m

2 stops

STL10:59 pmLambert-St Louis

$472

United Airlines

Feb 24

STL9:55 amLambert-St Louis

17h 00m

2 stops

MXP9:55 amMilan Malpensa

Mar 3

MXP1:05 pmMilan Malpensa

39h 00m

2 stops

STL9:05 pmLambert-St Louis

$475

United Airlines

Feb 9

STL9:57 amLambert-St Louis

14h 33m

2 stops

MXP7:30 amMilan Malpensa

Feb 19

MXP1:05 pmMilan Malpensa

39h 00m

2 stops

STL9:05 pmLambert-St Louis

$483

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Sun 2/22

6:55 pm-4:40 pm

2 stops14h 45m

Milan Malpensa

Sun 3/8

6:55 am-1:55 pm

1 stop14h 00m

$431

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Sun 2/22

6:55 pm-6:50 pm

2 stops16h 55m

Milan Linate

Sun 3/8

6:15 am-1:55 pm

1 stop14h 40m

$435

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Tue 2/24

11:39 am-7:30 am

1 stop12h 51m

Milan Malpensa

Tue 3/3

1:05 pm-10:59 pm

2 stops40h 54m

$472

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Tue 2/24

9:55 am-9:55 am

2 stops17h 00m

Milan Malpensa

Tue 3/3

1:05 pm-9:05 pm

2 stops39h 00m

$475

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Mon 2/23

11:59 am-11:50 am

2 stops16h 51m

Naples

Mon 3/2

1:55 pm-11:48 pm

2 stops40h 53m

$488

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Thu 3/19

6:50 pm-5:45 pm

2 stops16h 55m

Milan Linate

Tue 3/31

11:10 am-11:44 pm

2 stops19h 34m

$495

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Sun 3/1

1:13 pm-11:20 am

1 stop15h 07m

Venice Marco Polo

Tue 3/17

6:30 am-4:32 pm

2 stops16h 02m

$496

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 2/24

7:10 am-8:55 am

2 stops18h 45m

Florence Peretola

Wed 3/4

12:20 pm-11:36 pm

2 stops18h 16m

$500

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Thu 2/26

4:05 pm-10:15 pm

2 stops23h 10m

Florence Peretola

Thu 3/5

2:15 pm-3:29 pm

2 stops32h 14m

$515

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Thu 2/26

4:05 pm-10:15 pm

2 stops23h 10m

Florence Peretola

Wed 3/4

6:30 am-3:29 pm

2 stops39h 59m

$517

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 February. Flight prices, which tend to average around $690, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Italy from St. Louis during January instead. Flights to Italy in January, while not as cheap as those in February, still average around $693.

How far in advance should I book a flight 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 $946 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 $731 on momondo.

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

You could potentially save up to 7% 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	12h 00m
Direct flights	None

The fastest flight from St. Louis to Italy takes 12h 00m

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

Search flight deals

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 January 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 $481	Free Cancellation	Rating 6.7 7,702 reviews	Search British Airways flights
United Airlines	PriceFrom $485	Free Cancellation	Rating 7.4 9,207 reviews	Search United Airlines flights
Lufthansa	PriceFrom $490	Free Cancellation	Rating 6.8 7,749 reviews	Search Lufthansa flights
Delta	PriceFrom $498	Free Cancellation	Rating 7.9 8,121 reviews	Search Delta flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
Air Canada	PriceFrom $552	Free Cancellation	Rating 7.1 10,663 reviews	Search Air Canada flights
American Airlines	PriceFrom $559	Free Cancellation	Rating 7.2 11,198 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.