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

One-way options have recently been found by users for as low as $514 on WestJet. Other airlines that offer cheap prices include Aer Lingus from $598 and Turkish Airlines from $655 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Italy to St. Louis (average of $311). Flying from Italy to St. Louis in March is currently the most expensive (average of $356). 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.

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

Most travelers choose Rome Fiumicino - Lambert-St Louis, Milan Malpensa - Lambert-St Louis or Milan Linate - Lambert-St Louis when deciding on the best route from Italy to St. Louis.

What is the cheapest month to fly from Italy to St. Louis?

Our data shows that October tends to be the cheapest month to fly to St. Louis from Italy. Users have commonly found prices around $924 for the month, but tickets can be as low as $780. Due to multiple factors, prepare for potentially higher prices in August.

What airport do you fly into for flights to St. Louis from Italy?

Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Italy.

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

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

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

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

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

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

$860+ Flights from Italy to St. Louis

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Cheap flight deals from Italy to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$788 (Billigflug)
One-way from	$300 (Kiwi.com)
Popular in	August
Cheapest in	October
Average price	$939

Provider with most accurate pricing for Rome (ROM)-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Rome (ROM)-Lambert-St Louis flights.

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From Italy to Lambert-St Louis

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One-way flight from Italy to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($139 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Italy to St. Louis

Cheapest flights from Italy to St. Louis
Explore the most affordable flight options available from Italy to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Tue 4/1511:05 amFCO - STL

1 stop13h 57mMultiple Airlines

Sat 4/195:27 pmSTL - FCO

1 stop31h 38mMultiple Airlines

Deal found 4/1

$788

Thu 4/1712:25 pmFLR - STL

2 stops18h 08mBritish Airways

Mon 4/216:00 pmSTL - FLR

2 stops21h 20mBritish Airways

Deal found 4/1

$789

Fri 5/29:00 amMXP - STL

2 stops21h 36mDelta

Wed 5/286:00 amSTL - MXP

1 stop20h 25mDelta

Deal found 4/1

$792

Wed 4/1610:00 amFCO - STL

1 stop16h 29mBritish Airways

Sun 4/206:00 pmSTL - FCO

2 stops14h 55mBritish Airways

Deal found 4/1

$794

Wed 4/166:30 amFCO - STL

2 stops22h 06mDelta

Sun 4/2010:50 amSTL - FCO

2 stops17h 40mDelta

Deal found 3/31

$795

Mon 9/16:30 amLIN - STL

2 stops16h 28mDelta

Tue 9/301:30 pmSTL - LIN

2 stops15h 30mDelta

Deal found 4/1

$797

Wed 4/166:30 amFCO - STL

2 stops16h 56mKLM

Sun 4/2010:50 amSTL - FCO

1 stop13h 45mKLM

Deal found 3/31

$799

Tue 4/1511:05 amFCO - STL

1 stop13h 57mAmerican Airlines

Sat 4/196:00 pmSTL - FCO

1 stop32h 00mAmerican Airlines

Deal found 3/31

$806

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mUnited Airlines

Sat 6/78:05 amSTL - MXP

2 stops16h 25mUnited Airlines

Deal found 4/1

$808

Thu 5/297:10 amFCO - STL

2 stops36h 26mUnited Airlines

Sun 6/88:10 amSTL - FCO

2 stops16h 25mUnited Airlines

Deal found 4/1

$812

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mAir Canada

Sun 6/87:30 amSTL - MXP

2 stops19h 25mAir Canada

Deal found 4/1

$813

Thu 5/298:45 amFCO - STL

2 stops19h 30mLufthansa

Sun 6/85:27 pmSTL - FCO

1 stop31h 28mLufthansa

Deal found 4/1

$813

Best flights from Italy to St. Louis
Discover carefully curated flight deals from Italy to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2025.

Tue 4/1511:05 amFCO - STL

1 stop13h 57mMultiple Airlines

Sat 4/195:27 pmSTL - FCO

1 stop31h 38mMultiple Airlines

Deal found 4/1

$788

Thu 4/1712:25 pmFLR - STL

2 stops18h 08mBritish Airways

Mon 4/216:00 pmSTL - FLR

2 stops21h 20mBritish Airways

Deal found 4/1

$789

Fri 5/29:00 amMXP - STL

2 stops18h 39mDelta

Wed 5/286:00 amSTL - MXP

2 stops17h 45mDelta

Deal found 4/1

$792

Wed 4/166:30 amFCO - STL

2 stops16h 56mKLM

Sun 4/2010:50 amSTL - FCO

1 stop13h 45mKLM

Deal found 3/31

$799

Tue 4/1511:05 amFCO - STL

1 stop13h 57mAmerican Airlines

Sat 4/196:00 pmSTL - FCO

1 stop32h 00mAmerican Airlines

Deal found 3/31

$806

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mUnited Airlines

Sat 6/78:05 amSTL - MXP

2 stops16h 25mUnited Airlines

Deal found 4/1

$808

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mAir Canada

Sun 6/87:30 amSTL - MXP

2 stops19h 25mAir Canada

Deal found 4/1

$813

Thu 5/298:45 amFCO - STL

2 stops19h 30mLufthansa

Sun 6/85:27 pmSTL - FCO

1 stop31h 28mLufthansa

Deal found 4/1

$813

Mon 9/19:15 amMXP - STL

2 stops18h 32mScandinavian Airlines

Tue 9/303:30 pmSTL - MXP

3 stops21h 25mScandinavian Airlines

Deal found 4/1

$884

Tue 4/1510:40 amFCO - STL

2 stops18h 32mFinnair

Sat 4/196:00 pmSTL - FCO

2 stops17h 00mFinnair

Deal found 4/1

$1,008

Tue 4/157:35 amFCO - STL

2 stops17h 27mIberia

Sat 4/196:00 pmSTL - FCO

2 stops17h 15mIberia

Deal found 4/1

$1,052

Wed 9/1711:10 amFCO - STL

2 stops19h 15mAer Lingus

Fri 9/196:24 pmSTL - FCO

2 stops18h 26mAer Lingus

Deal found 4/1

$1,169

Last-minute flights from Italy to St. Louis
Discover last-minute flight deals from Italy to St. Louis. Data last updated April 2, 2025 and is based on user searches.

Tue 4/1511:05 amFCO - STL

1 stop13h 57mMultiple Airlines

Sat 4/195:27 pmSTL - FCO

1 stop31h 38mMultiple Airlines

Deal found 4/1

$788

Tue 4/1511:05 amFCO - STL

1 stop18h 07mAmerican Airlines

Sat 4/197:04 pmSTL - FCO

1 stop31h 46mAmerican Airlines

Deal found 3/31

$806

Wed 4/1610:00 amFCO - STL

1 stop16h 29mBritish Airways

Sun 4/206:00 pmSTL - FCO

2 stops14h 55mBritish Airways

Deal found 4/1

$794

Wed 4/166:30 amFCO - STL

2 stops22h 06mDelta

Sun 4/2010:50 amSTL - FCO

2 stops17h 40mDelta

Deal found 3/31

$795

Wed 4/166:30 amFCO - STL

2 stops16h 56mKLM

Sun 4/2010:50 amSTL - FCO

1 stop13h 45mKLM

Deal found 3/31

$799

Thu 4/1712:25 pmFLR - STL

2 stops18h 08mBritish Airways

Mon 4/216:00 pmSTL - FLR

2 stops21h 20mBritish Airways

Deal found 4/1

$789

Fri 5/29:00 amMXP - STL

2 stops18h 39mDelta

Wed 5/286:00 amSTL - MXP

2 stops17h 45mDelta

Deal found 4/1

$792

Sat 5/179:25 amBLQ - STL

2 stops17h 33mMultiple Airlines

Sat 5/247:30 amSTL - BLQ

2 stops19h 20mMultiple Airlines

Deal found 4/1

$816

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mUnited Airlines

Sat 6/78:05 amSTL - MXP

2 stops16h 25mUnited Airlines

Deal found 4/1

$808

Thu 5/297:10 amFCO - STL

2 stops36h 26mUnited Airlines

Sun 6/81:30 pmSTL - FCO

1 stop12h 45mUnited Airlines

Deal found 4/1

$812

Thu 5/2912:15 pmMXP - STL

1 stop14h 43mAir Canada

Sun 6/87:30 amSTL - MXP

2 stops19h 25mAir Canada

Deal found 4/1

$813

Thu 5/298:45 amFCO - STL

2 stops19h 30mLufthansa

Sun 6/85:27 pmSTL - FCO

1 stop31h 28mLufthansa

Deal found 4/1

$813

One-way flights from Italy to St. Louis
Search for one-way flight options from Italy to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 2, 2025.

Tue 4/296:35 pmMXP - STL

2 stops36h 29mMultiple Airlines

Deal found 4/1

$300

Tue 5/67:15 pmLIN - STL

2 stops35h 51mMultiple Airlines

Deal found 4/1

$326

Thu 6/127:05 pmFCO - STL

2 stops27h 17mMultiple Airlines

Deal found 3/30

$400

Sun 4/132:25 pmFCO - STL

2 stops40h 09mWestJet

Deal found 4/1

$514

Wed 5/77:30 amFCO - STL

2 stops18h 03mAer Lingus

Deal found 3/31

$598

Thu 6/193:10 pmMXP - STL

2 stops38h 35mTurkish Airlines

Deal found 4/1

$655

Wed 9/1012:05 pmVCE - STL

2 stops18h 20mAer Lingus

Deal found 3/31

$664

Sun 5/1111:20 amLIN - STL

2 stops17h 55mAer Lingus

Deal found 4/1

$669

Mon 5/510:45 amFCO - STL

2 stops35h 02mTurkish Airlines

Deal found 4/1

$686

Tue 5/69:45 amMXP - STL

1 stop21h 01mLufthansa

Deal found 4/1

$751

Wed 5/77:00 amFCO - STL

1 stop13h 30mLufthansa

Deal found 3/31

$757

Wed 9/1012:15 pmVCE - STL

1 stop33h 42mMultiple Airlines

Deal found 3/31

$784

Cheapflights Fare Finder

Use the filters below to find and compare flights from Italy to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Tue 4/15

11:05 am-6:02 pm

1 stop13h 57m

Lambert-St Louis

Sat 4/19

5:27 pm-8:05 am

1 stop31h 38m

$788

FlorenceSt. Louis

FLR - STL

FLRSTL

Florence Peretola

Thu 4/17

12:25 pm-11:33 pm

2 stops18h 08m

Lambert-St Louis

Mon 4/21

6:00 pm-10:20 pm

2 stops21h 20m

$789

MilanSt. Louis

MXP - STL

MXPSTL

Milan Malpensa

Fri 5/2

9:00 am-8:39 pm

2 stops18h 39m

Lambert-St Louis

Wed 5/28

6:00 am-6:45 am

2 stops17h 45m

$792

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/16

10:00 am-7:29 pm

1 stop16h 29m

Lambert-St Louis

Sun 4/20

6:00 pm-3:55 pm

2 stops14h 55m

$794

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/16

6:30 am-9:36 pm

2 stops22h 06m

Lambert-St Louis

Sun 4/20

10:50 am-11:30 am

2 stops17h 40m

$795

MilanSt. Louis

LIN - STL

LINSTL

Milan Linate

Mon 9/1

6:30 am-3:58 pm

2 stops16h 28m

Lambert-St Louis

Tue 9/30

1:30 pm-12:00 pm

2 stops15h 30m

$797

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/16

6:30 am-4:26 pm

2 stops16h 56m

Lambert-St Louis

Sun 4/20

10:50 am-7:35 am

1 stop13h 45m

$799

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Tue 4/15

11:05 am-6:02 pm

1 stop13h 57m

Lambert-St Louis

Sat 4/19

6:00 pm-9:00 am

1 stop32h 00m

$806

MilanSt. Louis

MXP - STL

MXPSTL

Milan Malpensa

Thu 5/29

12:15 pm-7:58 pm

1 stop14h 43m

Lambert-St Louis

Sat 6/7

8:05 am-7:30 am

2 stops16h 25m

$808

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 5/29

7:10 am-12:36 pm

2 stops36h 26m

Lambert-St Louis

Sun 6/8

8:10 am-7:35 am

2 stops16h 25m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 60 results

...

Best time to book a flight from Italy to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Italy 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 Italy to St. Louis

What is the cheapest time of day to fly from IT to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Italy to St. Louis as you normally would.

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Delta, KLM and Finnair from Italy to St. Louis by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,898 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,323 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines

7.6

Good

771 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,427 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to St. Louis from Italy?
Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Italy.
What are the cheapest airlines to fly from Italy to St. Louis one-way?
One-way options have recently been found by users for as low as $514 on WestJet. Other airlines that offer cheap prices include Aer Lingus from $598 and Turkish Airlines from $655 one-way.
What are the most popular routes from Italy to St. Louis?
Most travelers choose Rome Fiumicino - Lambert-St Louis, Milan Malpensa - Lambert-St Louis or Milan Linate - Lambert-St Louis when deciding on the best route from Italy to St. Louis.
Can I find deals for flights from Italy to St. Louis that include hotel bookings?
Yes. In addition to deals on Italy to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Italy to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Italy to St. Louis.
Can I find deals for business class flights from Italy to St. Louis?
Yes. Cheapflights offers flight deals from Italy to St. Louis 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 Italy to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Italy to St. Louis (average of $311). Flying from Italy to St. Louis in March is currently the most expensive (average of $356). 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

Fenton

Maryland Heights

Fairview Heights

Collinsville

Wentzville

Eureka

St. Peters

Festus

Glencoe

Alton

Farmington

Chesterfield

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$300+ Cheap flights from Italy to St. Louis (STL)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Italy to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Italy to St. Louis

Keep the following information in mind while searching for Italy to St. Louis flight deals. Data was last updated April 2, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Italy to St. Louis

Cheapest flights from Italy to St. LouisExplore the most affordable flight options available from Italy to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Explore the most affordable flight options available from Italy to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Italy to St. Louis that are best for you.

Best time to book a flight from Italy to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Italy with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from IT to STL?

Find hourly flight availability from Italy to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Delta, KLM and Finnair from Italy to St. Louis by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Italy to St. Louis. 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 into for flights to St. Louis from Italy?

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

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

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

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

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

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

Traveling to a place near Italy?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Italy to St. Louis

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Cheapest flights from Italy to St. Louis
Explore the most affordable flight options available from Italy to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.