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.

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

Lufthansa, United Airlines, and Air France are the most popular carriers operating from Lambert-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 March 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.

$355 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.

1:18 pm - 12:15 pm

STL

MXP

15h 57m

2 stops

6:00 am - 1:25 pm

MXP

STL

14h 25m

1 stop

$629Lufthansa

Wed, Aug 12 - Wed, Aug 26

1:18 pm - 1:00 pm

STL

LIN

16h 42m

2 stops

6:50 am - 1:25 pm

LIN

STL

13h 35m

1 stop

$632Lufthansa

Wed, Aug 12 - Wed, Aug 26

3:30 pm - 6:00 pm

STL

MXP

19h 30m

1 stop

6:00 am - 1:25 pm

MXP

STL

14h 25m

1 stop

$636Lufthansa

Wed, Aug 12 - Wed, Aug 26

3:30 pm - 2:40 pm

STL

LIN

16h 10m

1 stop

6:50 am - 1:25 pm

LIN

STL

13h 35m

1 stop

$639Lufthansa

Wed, Aug 12 - Wed, Aug 26

6:00 am - 6:00 pm

STL

MXP

29h 00m

2 stops

12:20 pm - 12:49 pm

MXP

STL

31h 29m

2 stops

$661United Airlines

Fri, Aug 14 - Fri, Aug 28

3:30 pm - 5:55 pm

STL

PSA

19h 25m

1 stop

10:40 am - 9:22 pm

PSA

STL

41h 42m

2 stops

$755United Airlines

Sun, Aug 16 - Thu, Aug 20

2:12 pm - 11:40 am

STL

VCE

14h 28m

2 stops

12:15 pm - 7:31 pm

VCE

STL

14h 16m

1 stop

$964American Airlines

Fri, Apr 24 - Tue, May 5

1:05 pm - 9:10 am

STL

VCE

13h 05m

1 stop

12:20 pm - 8:25 pm

VCE

STL

15h 05m

1 stop

$1,010Air Canada

Tue, May 12 - Tue, May 19

5:59 pm - 4:25 pm

STL

CAG

15h 26m

2 stops

5:05 pm - 11:14 pm

CAG

STL

37h 09m

2 stops

$1,110Delta

Wed, Apr 8 - Sun, Apr 12

2:15 pm - 6:15 pm

STL

CAG

21h 00m

2 stops

9:10 am - 10:45 pm

CAG

STL

20h 35m

3 stops

$1,141Air Canada

Sat, May 9 - Sat, May 16

British Airways flights from St. Louis to Italy

Our best British Airways deals on St. Louis to Italy flight tickets

British Airways

Aug 12

STL9:35 pmLambert-St Louis

19h 00m

1 stop

MXP11:35 pmMilan Malpensa

Aug 26

MXP2:20 pmMilan Malpensa

16h 22m

1 stop

STL11:42 pmLambert-St Louis

$655

British Airways

Aug 15

STL8:00 pmLambert-St Louis

30h 10m

1 stop

FCO9:10 amRome Fiumicino

Aug 26

FCO10:00 amRome Fiumicino

16h 14m

1 stop

STL7:14 pmLambert-St Louis

$741

British Airways

Apr 29

STL4:30 pmLambert-St Louis

13h 55m

2 stops

LIN1:25 pmMilan Linate

May 6

LIN11:10 amMilan Linate

18h 07m

2 stops

STL10:17 pmLambert-St Louis

$750

KLM flights from St. Louis to Italy

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

KLM

May 12

STL4:25 pmLambert-St Louis

32h 30m

1 stop

CTA7:55 amCatania Fontanarossa

May 20

CTA10:00 amCatania Fontanarossa

18h 29m

2 stops

STL9:29 pmLambert-St Louis

$903

KLM

May 12

STL4:25 pmLambert-St Louis

32h 45m

1 stop

NAP8:10 amNaples

May 19

NAP6:35 amNaples

17h 41m

2 stops

STL5:16 pmLambert-St Louis

$933

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Wed 8/12

1:18 pm-12:15 pm

2 stops15h 57m

Milan Malpensa

Wed 8/26

6:00 am-1:25 pm

1 stop14h 25m

$629

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 8/12

1:18 pm-1:00 pm

2 stops16h 42m

Milan Linate

Wed 8/26

6:50 am-1:25 pm

1 stop13h 35m

$632

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Wed 8/12

3:30 pm-6:00 pm

1 stop19h 30m

Milan Malpensa

Wed 8/26

6:00 am-1:25 pm

1 stop14h 25m

$636

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 8/12

3:30 pm-2:40 pm

1 stop16h 10m

Milan Linate

Wed 8/26

6:50 am-1:25 pm

1 stop13h 35m

$639

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Fri 8/14

6:00 am-6:00 pm

2 stops29h 00m

Milan Malpensa

Fri 8/28

12:20 pm-12:49 pm

2 stops31h 29m

$661

St. LouisPisa

STL - PSA

STLPSA

Lambert-St Louis

Sun 8/16

3:30 pm-5:55 pm

1 stop19h 25m

Pisa Gal Galilei

Thu 8/20

10:40 am-9:22 pm

2 stops41h 42m

$755

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Fri 4/24

2:12 pm-11:40 am

2 stops14h 28m

Venice Marco Polo

Tue 5/5

12:15 pm-7:31 pm

1 stop14h 16m

$964

Quickest round-trip

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Tue 5/12

1:05 pm-9:10 am

1 stop13h 05m

Venice Marco Polo

Tue 5/19

12:20 pm-8:25 pm

1 stop15h 05m

$1,010

St. LouisCagliari

STL - CAG

STLCAG

Lambert-St Louis

Wed 4/8

5:59 pm-4:25 pm

2 stops15h 26m

Cagliari Elmas

Sun 4/12

5:05 pm-11:14 pm

2 stops37h 09m

$1,110

St. LouisCagliari

STL - CAG

STLCAG

Lambert-St Louis

Sat 5/9

2:15 pm-6:15 pm

2 stops21h 00m

Cagliari Elmas

Sat 5/16

9:10 am-10:45 pm

3 stops20h 35m

$1,141

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 $540, 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 $663.

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 $897 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 9% 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

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 March 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 7,830 reviews	Search British Airways flights
United Airlines	PriceFrom $472	Free Cancellation	Rating 7.4 9,509 reviews	Search United Airlines flights
Lufthansa	PriceFrom $493	Free Cancellation	Rating 6.8 7,872 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,478 reviews	Search KLM flights
Air Canada	PriceFrom $552	Free Cancellation	Rating 7.1 10,856 reviews	Search Air Canada flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,358 reviews	Search Delta flights
American Airlines	PriceFrom $559	Free Cancellation	Rating 7.1 11,520 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.