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

British Airways, Delta, and Air Canada 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 36% 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 October 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.

$329 Cheap Flights from St. Louis to Italy in 2026/27

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.

6:00 am - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

21h 55m1 stop Newark

1:15 pm - 4:17 pmFCO Rome Fiumicino-STL Lambert-St Louis

34h 02m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$656United Airlines

Sun, Nov 8 - Wed, Nov 18

7:30 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 15m1 stop Chicago O'Hare Intl

1:15 pm - 4:17 pmFCO Rome Fiumicino-STL Lambert-St Louis

34h 02m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$656United Airlines

Mon, Nov 9 - Wed, Nov 18

6:50 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

31h 05m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 3:43 pmFCO Rome Fiumicino-STL Lambert-St Louis

33h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$659Air Canada

Sat, Nov 7 - Fri, Nov 20

6:30 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

43h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

40h 44m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$659Air Canada

Tue, Dec 1 - Wed, Dec 9

1:05 pm - 9:00 amSTL Lambert-St Louis-FCO Rome Fiumicino

12h 55m1 stop Philadelphia

7:30 am - 8:22 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 52m2 stops Madrid Barajas Chicago O'Hare Intl

$664Iberia

Sun, Feb 7 - Fri, Feb 19

5:29 pm - 4:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 26m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:33 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 33m1 stop Philadelphia

$665American Airlines

Sun, Nov 8 - Tue, Nov 24

5:29 pm - 4:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 26m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:33 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 33m1 stop Philadelphia

$667American Airlines

Sun, Nov 8 - Tue, Nov 24

8:29 am - 10:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

19h 16m1 stop Dallas/Fort Worth

1:10 pm - 9:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

15h 49m1 stop Dallas/Fort Worth

$669British Airways

Mon, Nov 9 - Wed, Nov 18

1:45 pm - 1:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 10m2 stops Chicago O'Hare Intl Madrid Barajas

7:30 am - 8:22 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 52m2 stops Madrid Barajas Chicago O'Hare Intl

$672Iberia

Sun, Feb 7 - Fri, Feb 19

5:38 pm - 5:50 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 12m2 stops Chicago O'Hare Intl London Heathrow

1:10 pm - 8:46 pmFCO Rome Fiumicino-STL Lambert-St Louis

14h 36m1 stop Philadelphia

$673British Airways

Sun, Dec 6 - Tue, Dec 15

Cheap last minute flights

Enter your travel dates to find the best prices.

7:30 am - 2:05 pmSTL Lambert-St Louis-FLR Florence Peretola

24h 35m2 stops Chicago O'Hare Intl Zurich

6:30 am - 1:45 pmFLR Florence Peretola-STL Lambert-St Louis

14h 15m1 stop Frankfurt am Main

$960United Airlines

Sun, Oct 25 - Fri, Nov 6

9:40 am - 12:30 pmSTL Lambert-St Louis-FLR Florence Peretola

20h 50m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:30 am - 1:45 pmFLR Florence Peretola-STL Lambert-St Louis

14h 15m1 stop Frankfurt am Main

$960United Airlines

Sun, Oct 25 - Fri, Nov 6

10:35 am - 11:35 amSTL Lambert-St Louis-FLR Florence Peretola

19h 00m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

11:20 am - 8:51 pmFLR Florence Peretola-STL Lambert-St Louis

16h 31m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$969Delta

Sun, Oct 25 - Fri, Nov 6

2:38 pm - 2:25 pmSTL Lambert-St Louis-FLR Florence Peretola

17h 47m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

1:05 pm - 11:54 pmFLR Florence Peretola-STL Lambert-St Louis

17h 49m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$969Delta

Sun, Oct 25 - Fri, Nov 6

12:10 pm - 10:20 amSTL Lambert-St Louis-MXP Milan Malpensa

15h 10m1 stop Montreal Pierre Elliott Trudeau Intl

6:35 pm - 2:45 pmMXP Milan Malpensa-STL Lambert-St Louis

26h 10m1 stop Frankfurt am Main

$970Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

4:40 pm - 6:30 pmSTL Lambert-St Louis-FLR Florence Peretola

19h 50m1 stop Frankfurt am Main

6:30 am - 1:45 pmFLR Florence Peretola-STL Lambert-St Louis

14h 15m1 stop Frankfurt am Main

$972Lufthansa

Sun, Oct 25 - Fri, Nov 6

8:55 am - 10:20 amSTL Lambert-St Louis-MXP Milan Malpensa

18h 25m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

6:35 pm - 2:45 pmMXP Milan Malpensa-STL Lambert-St Louis

26h 10m1 stop Frankfurt am Main

$975Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

6:50 pm - 4:20 pmSTL Lambert-St Louis-FLR Florence Peretola

15h 30m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:30 am - 11:24 pmFLR Florence Peretola-STL Lambert-St Louis

23h 54m2 stops Frankfurt am Main Chicago O'Hare Intl

$976Lufthansa

Sun, Oct 25 - Fri, Nov 6

5:36 pm - 10:05 amSTL Lambert-St Louis-MXP Milan Malpensa

57h 29m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:05 pm - 3:26 pmMXP Milan Malpensa-STL Lambert-St Louis

33h 21m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$2,263Air Canada

Fri, Oct 23 - Tue, Nov 3

7:01 pm - 10:05 amSTL Lambert-St Louis-MXP Milan Malpensa

32h 04m3 stops Chicago O'Hare Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

1:05 pm - 3:26 pmMXP Milan Malpensa-STL Lambert-St Louis

33h 21m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$2,356Air Canada

Fri, Oct 23 - Tue, Nov 3

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Delta flights from St. Louis to Italy

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

Delta

Nov 8

STL6:00 amLambert-St Louis

19h 15m

1 stop

FCO8:15 amRome Fiumicino

Nov 18

FCO10:00 amRome Fiumicino

14h 14m

1 stop

STL5:14 pmLambert-St Louis

$676

Delta

Nov 8

STL7:00 amLambert-St Louis

19h 35m

2 stops

FCO9:35 amRome Fiumicino

Nov 24

FCO10:00 amRome Fiumicino

20h 56m

2 stops

STL11:56 pmLambert-St Louis

$680

Delta

Nov 18

STL6:00 amLambert-St Louis

18h 45m

2 stops

FCO7:45 amRome Fiumicino

Nov 26

FCO12:55 pmRome Fiumicino

27h 30m

2 stops

STL9:25 amLambert-St Louis

$681

British Airways flights from St. Louis to Italy

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

British Airways

Nov 9

STL11:35 amLambert-St Louis

18h 20m

2 stops

FCO12:55 pmRome Fiumicino

Nov 20

FCO1:10 pmRome Fiumicino

35h 55m

1 stop

STL6:05 pmLambert-St Louis

$673

British Airways

Dec 6

STL5:38 pmLambert-St Louis

17h 12m

2 stops

FCO5:50 pmRome Fiumicino

Dec 15

FCO12:15 pmRome Fiumicino

17h 02m

2 stops

STL10:17 pmLambert-St Louis

$685

British Airways

Nov 15

STL11:35 amLambert-St Louis

17h 45m

2 stops

FCO12:20 pmRome Fiumicino

Nov 23

FCO6:45 pmRome Fiumicino

35h 50m

2 stops

STL11:35 pmLambert-St Louis

$686

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

6:00 am-10:55 am

1 stop21h 55m

Rome Fiumicino

Wed 11/18

1:15 pm-4:17 pm

2 stops34h 02m

$656

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

7:30 am-7:45 am

1 stop17h 15m

Rome Fiumicino

Wed 11/18

1:15 pm-4:17 pm

2 stops34h 02m

$656

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sat 11/7

6:50 pm-8:55 am

2 stops31h 05m

Rome Fiumicino

Fri 11/20

1:15 pm-3:43 pm

2 stops33h 28m

$659

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 12/1

6:30 am-8:55 am

2 stops43h 25m

Rome Fiumicino

Wed 12/9

1:15 pm-10:59 pm

2 stops40h 44m

$659

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 2/7

1:05 pm-9:00 am

1 stop12h 55m

Rome Fiumicino

Fri 2/19

7:30 am-8:22 pm

2 stops19h 52m

$664

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

5:29 pm-4:55 pm

2 stops16h 26m

Rome Fiumicino

Tue 11/24

11:00 am-8:33 pm

1 stop16h 33m

$665

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

5:29 pm-4:55 pm

2 stops16h 26m

Rome Fiumicino

Tue 11/24

11:00 am-8:33 pm

1 stop16h 33m

$667

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

8:29 am-10:45 am

1 stop19h 16m

Rome Fiumicino

Wed 11/18

1:10 pm-9:59 pm

1 stop15h 49m

$669

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 2/7

1:45 pm-1:55 pm

2 stops17h 10m

Rome Fiumicino

Fri 2/19

7:30 am-8:22 pm

2 stops19h 52m

$672

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 12/6

5:38 pm-5:50 pm

2 stops17h 12m

Rome Fiumicino

Tue 12/15

1:10 pm-8:46 pm

1 stop14h 36m

$673

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 January. Flight prices, which tend to average around $677, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Italy from St. Louis during February instead. Flights to Italy in February, while not as cheap as those in January, still average around $695.

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 $998 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 8% 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

Best Price Found	$329
Fastest flight time	11h 25m
Direct flights	None

The best one-way flight to Italy from St. Louis in the past 72 hours is $329. The best round-trip flight deal from St. Louis to Italy found on momondo in the last 72 hours is $656.

The fastest flight from St. Louis to Italy takes 11h 25m

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 October 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 8,266 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,281 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,591 reviews	Search KLM flights
American Airlines	PriceFrom $513	Free Cancellation	Rating 7.0 12,181 reviews	Search American Airlines flights
United Airlines	PriceFrom $538	Free Cancellation	Rating 7.3 10,390 reviews	Search United Airlines flights
Air Canada	PriceFrom $552	Free Cancellation	Rating 7.1 11,784 reviews	Search Air Canada flights
Delta	PriceFrom $596	Free Cancellation	Rating 7.8 8,649 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.