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Cheap flights from St. Louis to Italy from $371

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Italy departing on 11/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Italy

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:24 pm - 1:05 pmSTL-MXP
13h 41m1 stop
United Airlines Logo
1:05 pm - 10:45 pmMXP-STL
40h 40m2 stops
$492United Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
Air Canada Logo
6:43 pm - 9:55 amSTL-MXP
32h 12m2 stops
Air Canada Logo
6:05 am - 3:29 pmMXP-STL
40h 24m2 stops
$496Air Canada
Find Deal
mar., nov. 18 - mié., nov. 26
Lufthansa Logo
6:43 pm - 6:50 pmSTL-LIN
17h 07m2 stops
Lufthansa Logo
6:55 pm - 1:55 pmLIN-STL
26h 00m1 stop
$518Lufthansa
Find Deal
mar., nov. 25 - mar., dic. 2
Lufthansa Logo
11:50 am - 7:55 amSTL-FCO
13h 05m1 stop
Lufthansa Logo
7:05 am - 1:55 pmFCO-STL
13h 50m1 stop
$521Lufthansa
Find Deal
lun., dic. 8 - mié., dic. 24
American Airlines Logo
1:35 pm - 3:35 pmSTL-NAP
19h 00m2 stops
American Airlines Logo
6:20 am - 6:14 pmNAP-STL
18h 54m2 stops
$545American Airlines
Find Deal
jue., ene. 15 - lun., ene. 26
KLM Logo
2:36 pm - 3:50 pmSTL-NAP
18h 14m2 stops
KLM Logo
6:15 am - 5:10 pmNAP-STL
17h 55m2 stops
$551KLM
Find Deal
lun., dic. 1 - lun., dic. 8
KLM Logo
2:11 pm - 10:30 amSTL-FCO
13h 19m1 stop
KLM Logo
12:40 pm - 9:02 pmFCO-STL
15h 22m1 stop
$555KLM
Find Deal
mar., dic. 2 - dom., dic. 14
American Airlines Logo
4:44 pm - 2:55 pmSTL-FCO
15h 11m2 stops
American Airlines Logo
1:10 pm - 10:44 pmFCO-STL
16h 34m2 stops
$556American Airlines
Find Deal
vie., feb. 20 - sáb., feb. 28
Delta Logo
11:36 am - 11:40 amSTL-MXP
17h 04m2 stops
Delta Logo
12:00 pm - 8:55 amMXP-STL
27h 55m2 stops
$556Delta
Find Deal
jue., nov. 6 - mar., nov. 18
Delta Logo
11:40 am - 9:05 amSTL-MXP
14h 25m1 stop
Delta Logo
11:35 am - 9:02 pmMXP-STL
16h 27m2 stops
$558Delta
Find Deal
mié., dic. 3 - dom., dic. 7

KLM flights from St. Louis to Italy

Our best KLM deals on St. Louis to Italy flight tickets
KLM
Dec 1
STL2:36 pmLambert-St Louis
18h 14m
2 stops
NAP3:50 pmNaples
Dec 8
NAP6:15 amNaples
17h 55m
2 stops
STL5:10 pmLambert-St Louis
$551
Find similar
KLM
Dec 2
STL2:11 pmLambert-St Louis
13h 19m
1 stop
FCO10:30 amRome Fiumicino
Dec 14
FCO12:40 pmRome Fiumicino
15h 22m
1 stop
STL9:02 pmLambert-St Louis
$555
Find similar
KLM
Jan 2
STL10:04 amLambert-St Louis
14h 51m
1 stop
FCO7:55 amRome Fiumicino
Jan 14
FCO12:40 pmRome Fiumicino
18h 00m
1 stop
STL11:40 pmLambert-St Louis
$625
Find similar

Lufthansa flights from St. Louis to Italy

Our best Lufthansa deals on St. Louis to Italy flight tickets
Lufthansa
Nov 25
STL6:43 pmLambert-St Louis
17h 07m
2 stops
LIN6:50 pmMilan Linate
Dec 2
LIN6:55 pmMilan Linate
26h 00m
1 stop
STL1:55 pmLambert-St Louis
$518
Find similar
Lufthansa
Dec 8
STL11:50 amLambert-St Louis
13h 05m
1 stop
FCO7:55 amRome Fiumicino
Dec 24
FCO7:05 amRome Fiumicino
13h 50m
1 stop
STL1:55 pmLambert-St Louis
$521
Find similar
Lufthansa
Oct 30
STL6:43 pmLambert-St Louis
18h 07m
2 stops
LIN6:50 pmMilan Linate
Nov 6
LIN9:45 amMilan Linate
20h 57m
2 stops
STL11:42 pmLambert-St Louis
$528
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Italy that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated octubre 20, 2025.
Use the filters below to find and compare flights from St. Louis to Italy that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

jue. 10/30

5:24 pm-1:05 pm

1 stop13h 41m

Milan Malpensa

jue. 11/6

1:05 pm-10:45 pm

2 stops40h 40m

$492

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

mar. 11/18

6:43 pm-9:55 am

2 stops32h 12m

Milan Malpensa

mié. 11/26

6:05 am-3:29 pm

2 stops40h 24m

$496

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

mar. 11/25

6:43 pm-6:50 pm

2 stops17h 07m

Milan Linate

mar. 12/2

6:55 pm-1:55 pm

1 stop26h 00m

$518

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

lun. 12/8

11:50 am-7:55 am

1 stop13h 05m

Rome Fiumicino

mié. 12/24

7:05 am-1:55 pm

1 stop13h 50m

$521

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

jue. 1/15

1:35 pm-3:35 pm

2 stops19h 00m

Naples

lun. 1/26

6:20 am-6:14 pm

2 stops18h 54m

$545

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

lun. 12/1

2:36 pm-3:50 pm

2 stops18h 14m

Naples

lun. 12/8

6:15 am-5:10 pm

2 stops17h 55m

$551

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 12/2

2:11 pm-10:30 am

1 stop13h 19m

Rome Fiumicino

dom. 12/14

12:40 pm-9:02 pm

1 stop15h 22m

$555

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 2/20

4:44 pm-2:55 pm

2 stops15h 11m

Rome Fiumicino

sáb. 2/28

1:10 pm-10:44 pm

2 stops16h 34m

$556

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

jue. 11/6

11:36 am-11:40 am

2 stops17h 04m

Milan Malpensa

mar. 11/18

12:00 pm-8:55 am

2 stops27h 55m

$556

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

mié. 12/3

11:40 am-9:05 am

1 stop14h 25m

Milan Malpensa

dom. 12/7

11:35 am-9:02 pm

2 stops16h 27m

$558

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Italy from

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

What is the cheapest month to fly to Italy?

The cheapest month to fly to Italy from St. Louis is in November. Flight prices, which tend to average around $722, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Italy from St. Louis during February instead. Flights to Italy in February, while not as cheap as those in November, still average around $724.

What is the cheapest day to depart on your flight to Italy?

According to our data, Wednesday is the cheapest day to fly to Italy from St. Louis. The lowest ticket price found for a Wednesday departure recently was $1,109. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Italy for around $1,335.

What is the cheapest time of day to depart on your flight to Italy?

Our data shows that the cheapest St. Louis to Italy flights are usually those with departure times in the afternoon. Our users have found flights to Italy in the afternoon for as low as $1,209. In contrast, the most expensive time of day to depart to Italy is in the evening when prices are around $1,328.

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 $1,029 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 $736 on momondo.

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

You could potentially save up to 37% 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

Direct flights

None
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?

  • 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
United AirlinesPriceFrom $485Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
LufthansaPriceFrom $493Free CancellationRating
6.8
7,508 reviews
Search Lufthansa flights
IberiaPriceFrom $536Free CancellationRating
7.0
2,996 reviews
Search Iberia flights
KLMPriceFrom $573Free CancellationRating
7.7
1,404 reviews
Search KLM flights
DeltaPriceFrom $587Free CancellationRating
7.9
7,978 reviews
Search Delta flights
American AirlinesPriceFrom $619Free CancellationRating
7.2
11,024 reviews
Search American Airlines flights
British AirwaysPriceFrom $672Free CancellationRating
6.7
7,461 reviews
Search British Airways flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,335 reviews
Search Air Canada 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.

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