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

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

What airlines fly to Italy?

United Airlines, Lufthansa and American Airlines 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 35% 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 July 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.

$269 Cheap Flights from St. Louis to Italy in 2026

Discover deals from 900+ travel sites with momondo.

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.

12:45 pm - 12:05 pm

STL

FCO

16h 20m

1 stop

10:00 am - 12:14 am

FCO

STL

21h 14m

1 stop

$757Finnair

Sun, Aug 9 - Tue, Aug 25

7:00 am - 9:30 pm

STL

VCE

31h 30m

2 stops

7:40 am - 7:45 pm

VCE

STL

19h 05m

2 stops

$762Multiple Airlines

Mon, Sep 7 - Fri, Sep 11

7:04 pm - 7:45 am

STL

FCO

29h 41m

1 stop

11:15 am - 3:26 pm

FCO

STL

35h 11m

1 stop

$766Lufthansa

Tue, Nov 10 - Tue, Jan 12

6:00 am - 7:45 am

STL

FCO

18h 45m

1 stop

7:05 am - 1:45 pm

FCO

STL

13h 40m

1 stop

$768Lufthansa

Sun, Nov 8 - Wed, Nov 18

8:58 am - 11:55 am

STL

FCO

19h 57m

1 stop

1:15 pm - 12:40 pm

FCO

STL

30h 25m

2 stops

$769United Airlines

Mon, Nov 9 - Wed, Nov 18

3:40 pm - 12:40 pm

STL

FCO

14h 00m

1 stop

7:05 am - 1:45 pm

FCO

STL

13h 40m

1 stop

$772Lufthansa

Sun, Nov 8 - Wed, Nov 18

7:33 am - 8:30 am

STL

FCO

17h 57m

2 stops

1:15 pm - 12:40 pm

FCO

STL

30h 25m

2 stops

$774United Airlines

Mon, Nov 9 - Wed, Nov 18

2:10 pm - 12:10 pm

STL

FLR

15h 00m

2 stops

12:40 pm - 2:33 pm

FLR

STL

32h 53m

2 stops

$806Delta

Mon, Aug 10 - Mon, Aug 24

4:40 pm - 10:55 am

STL

MXP

11h 15m

1 stop

12:00 pm - 11:18 pm

MXP

STL

18h 18m

2 stops

$835Delta

Sun, Dec 13 - Fri, Dec 18

5:27 pm - 1:05 pm

STL

NAP

36h 38m

2 stops

1:55 pm - 11:58 pm

NAP

STL

41h 03m

2 stops

$875British Airways

Sat, Dec 12 - Mon, Dec 21

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Austrian Airlines flights from St. Louis to Italy

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

Austrian Airlines

Aug 2

STL6:01 amLambert-St Louis

17h 59m

1 stop

NAP7:00 amNaples

Aug 11

NAP2:00 pmNaples

16h 38m

1 stop

STL11:38 pmLambert-St Louis

$922

Austrian Airlines

Sep 25

STL1:29 pmLambert-St Louis

17h 36m

2 stops

FLR2:05 pmFlorence Peretola

Oct 8

FLR7:00 amFlorence Peretola

21h 09m

2 stops

STL9:09 pmLambert-St Louis

$972

British Airways flights from St. Louis to Italy

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

British Airways

Aug 5

STL1:25 pmLambert-St Louis

12h 45m

1 stop

FCO9:10 amRome Fiumicino

Aug 19

FCO10:00 amRome Fiumicino

21h 14m

1 stop

STL12:14 amLambert-St Louis

$819

British Airways

Oct 13

STL9:35 pmLambert-St Louis

11h 50m

1 stop

FCO4:25 pmRome Fiumicino

Oct 28

FCO10:50 amRome Fiumicino

16h 18m

1 stop

STL9:08 pmLambert-St Louis

$870

British Airways

Dec 12

STL5:27 pmLambert-St Louis

36h 38m

2 stops

NAP1:05 pmNaples

Dec 21

NAP1:55 pmNaples

41h 03m

2 stops

STL11:58 pmLambert-St Louis

$875

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/9

12:45 pm-12:05 pm

1 stop16h 20m

Rome Fiumicino

Tue 8/25

10:00 am-12:14 am

1 stop21h 14m

$757

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Mon 9/7

7:00 am-9:30 pm

2 stops31h 30m

Venice Marco Polo

Fri 9/11

7:40 am-7:45 pm

2 stops19h 05m

$762

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

7:04 pm-7:45 am

1 stop29h 41m

Rome Fiumicino

Tue 1/12

11:15 am-3:26 pm

1 stop35h 11m

$766

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

6:00 am-7:45 am

1 stop18h 45m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$768

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

8:58 am-11:55 am

1 stop19h 57m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$769

Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$772

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

7:33 am-8:30 am

2 stops17h 57m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$774

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Mon 8/10

2:10 pm-12:10 pm

2 stops15h 00m

Florence Peretola

Mon 8/24

12:40 pm-2:33 pm

2 stops32h 53m

$806

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Sun 12/13

4:40 pm-10:55 am

1 stop11h 15m

Milan Malpensa

Fri 12/18

12:00 pm-11:18 pm

2 stops18h 18m

$835

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Sat 12/12

5:27 pm-1:05 pm

2 stops36h 38m

Naples

Mon 12/21

1:55 pm-11:58 pm

2 stops41h 03m

$875

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 $958 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 $729 on momondo.

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

You could potentially save up to 26% 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 15m
Direct flights	None

The fastest flight from St. Louis to Italy takes 11h 15m

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 July 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 8,089 reviews	Search British Airways flights
United Airlines	PriceFrom $472	Free Cancellation	Rating 7.4 9,908 reviews	Search United Airlines flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,109 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,532 reviews	Search KLM flights
American Airlines	PriceFrom $513	Free Cancellation	Rating 7.1 11,766 reviews	Search American Airlines flights
Air Canada	PriceFrom $552	Free Cancellation	Rating 7.1 11,282 reviews	Search Air Canada flights
Delta	PriceFrom $564	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta 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.