Italy

$349+ Cheap flights from St. Louis (STL) to Italy

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — NAP
Jul 4 — Jul 111
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Cheap flight deals from St. Louis to Italy

Cheapest flights from St. Louis to Italy
Explore the most affordable flight options available from St. Louis to Italy. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.

This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:10 pm
STL
-
NAP
1 stop14h 30m
United Airlines
Wed 8/266:00 am
NAP
-
STL
1 stop14h 25m
United Airlines
Deal found 6/2$751
This oojo deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:30 pm
STL
-
NAP
1 stop13h 50m
Lufthansa
Wed 8/266:00 am
NAP
-
STL
1 stop14h 25m
Lufthansa
Deal found 6/3$752
This FlightHub deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:59 pm
STL
-
NAP
2 stops16h 16m
Lufthansa
Wed 8/266:00 am
NAP
-
STL
1 stop14h 25m
Lufthansa
Deal found 6/2$754
This KAYAK deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:30 pm
STL
-
FLR
2 stops16h 05m
Lufthansa
Wed 11/256:30 am
FLR
-
STL
1 stop14h 15m
Lufthansa
Deal found 6/3$773
This Gotogate deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:10 pm
STL
-
CTA
1 stop13h 55m
Multiple Airlines
Sun 8/2310:45 am
CTA
-
STL
1 stop14h 57m
Multiple Airlines
Deal found 5/31$777
This FlightHub deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:42 pm
STL
-
FCO
2 stops19h 53m
Scandinavian Airlines
Fri 9/187:25 pm
FCO
-
STL
2 stops35h 11m
Scandinavian Airlines
Deal found 6/2$780
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:45 am
STL
-
FLR
2 stops18h 35m
Delta
Wed 11/256:30 am
FLR
-
STL
2 stops21h 19m
Delta
Deal found 6/2$782
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:10 pm
STL
-
CTA
1 stop13h 55m
United Airlines
Sun 8/2310:45 am
CTA
-
STL
2 stops42h 15m
United Airlines
Deal found 5/31$785
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:45 am
STL
-
FCO
1 stop15h 15m
Iberia
Wed 11/1811:00 am
FCO
-
STL
1 stop16h 55m
Iberia
Deal found 5/30$790
This Justfly.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:04 pm
STL
-
FLR
2 stops23h 01m
Scandinavian Airlines
Wed 9/1612:20 pm
FLR
-
STL
2 stops42h 16m
Scandinavian Airlines
Deal found 6/2$797
This Finnair deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:20 pm
STL
-
FCO
1 stop14h 25m
Finnair
Wed 11/186:40 pm
FCO
-
STL
2 stops31h 50m
Finnair
Deal found 6/2$798
This KAYAK deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:10 pm
STL
-
FCO
1 stop14h 05m
Multiple Airlines
Tue 8/2511:30 am
FCO
-
STL
2 stops35h 08m
Multiple Airlines
Deal found 6/3$802

Find flight deals from St. Louis to Italy

Keep the following information in mind while searching for St. Louis to Italy flight deals. Data was last updated June 4, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$751
(United Airlines)

One-way from

$349
(Cheapflightsfares)

Popular in

June

Cheapest in

February

Average price

$1,677
Provider with most accurate pricing for Lambert-St Louis-Rome (ROM) flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Rome (ROM) flights.
From Lambert-St Louis to Italy
One-way flight from Lambert-St Louis to Italy
Highest demand for flights based on searches. 30% potential increase in price ($415 potential increase over avg. RT price).
Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
Average for round-trip flights in June 2026

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
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

Cheapest round-trip

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Mon 8/17

7:00 am-9:40 am

3 stops19h 40m

Naples

Wed 8/26

6:00 am-6:42 pm

2 stops43h 42m

$759

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 11/10

9:45 am-11:20 am

2 stops18h 35m

Florence Peretola

Wed 11/25

6:30 am-8:49 pm

2 stops21h 19m

$782

St. LouisCatania

STL - CTA

STLCTA

Lambert-St Louis

Tue 8/18

7:00 am-9:05 am

3 stops19h 05m

Catania Fontanarossa

Sun 8/23

10:45 am-11:40 pm

2 stops43h 55m

$790

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sat 10/17

5:36 pm-12:40 pm

2 stops36h 04m

Florence Peretola

Fri 10/23

6:30 am-1:25 pm

1 stop13h 55m

$853

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Sun 7/26

6:01 am-11:40 am

1 stop22h 39m

Naples

Tue 8/11

11:25 am-6:42 pm

1 stop14h 17m

$857

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Wed 7/29

12:10 pm-9:40 am

1 stop14h 30m

Naples

Fri 8/7

2:00 pm-11:44 pm

1 stop16h 44m

$868

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Sun 9/6

6:54 pm-8:15 pm

2 stops18h 21m

Florence Peretola

Wed 9/16

6:30 am-1:25 pm

1 stop13h 55m

$892

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Mon 7/20

2:40 pm-9:30 am

1 stop11h 50m

Venice Marco Polo

Wed 8/5

6:40 am-6:42 pm

2 stops19h 02m

$895

St. LouisFlorence

STL - FLR

STLFLR

Lambert-St Louis

Tue 9/8

3:30 pm-6:30 pm

1 stop20h 00m

Florence Peretola

Tue 9/22

6:30 am-1:25 pm

1 stop13h 55m

$901

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Mon 8/17

6:54 pm-8:15 pm

3 stops18h 21m

Rome Ciampino

Tue 8/25

8:40 pm-1:25 pm

2 stops23h 45m

$910

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from St. Louis to Italy

Have a flexible travel schedule? Discover the best time to fly to Italy from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Italy

What is the cheapest month to book a flight from St. Louis to Italy?

Currently, March is the cheapest month in which you can book a flight from St. Louis to Italy (average of $441). Flying from St. Louis to Italy in June is currently the most expensive (average of $676). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from St. Louis to Italy?

The best time to book flights from St. Louis to Italy is 47 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Italy

Get insights into the airlines that provide service to Italy. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Italy. Reviews last updated June 4, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from St. Louis to Italy by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Comfort

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Italy. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to Italy?

    If you book a flight to Italy from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from St. Louis to Italy?

    United Airlines, Lufthansa, and Delta can get you from St. Louis to Italy in just under 16h 05m. Your travel time can differ by up to 3h 35m. St. Louis and Italy are separated by a distance of 4924 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from St. Louis to Italy one-way?

    The cheapest airlines for a one-way flight from St. Louis to Italy are Delta ($98), Southwest ($144), and American Airlines ($236).

  • What are the most popular routes from St. Louis to Italy?

  • Can I find deals for flights from St. Louis to Italy that include hotel bookings?

    Yes. In addition to deals on St. Louis to Italy flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Italy?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Italy.

  • Can I find deals for business class flights from St. Louis to Italy?

    Yes. Cheapflights offers flight deals from St. Louis to Italy by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Italy?

    Currently, March is the cheapest month in which you can book a flight from St. Louis to Italy (average of $441). Flying from St. Louis to Italy in June is currently the most expensive (average of $676). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from St. Louis to Italy

Discover the top 7 airlines that operate flights from St. Louis to Italy. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$472Average$1,155FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$472Average$955FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$500Average$1,059FlexibilityNo cancel feeOn-time76%
KLMCheapest$506Average$884FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$513Average$1,076FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$552Average$1,031FlexibilityNo cancel feeOn-time67%
DeltaCheapest$555Average$1,090FlexibilityNo cancel feeOn-timeN/A

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