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 Aer Lingus ($546), Scandinavian Airlines ($560), and American Airlines ($590).

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

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

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

Travelers have found it’s best to book a flight 40 days in advance to save up to 98% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 40 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Italy 1-2 weeks in advance for as low as $1,320, or $1,495 for flights within the next 24 hours.

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

November is one of the best times of the year to fly to Italy from St. Louis. Prices for November average $1,095 per person but you can even find prices for as low as $625. The most expensive prices can be found in the month of June. Opting for a November flight can save you 50% on your journey compared to booking in June

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.

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.

$783+ Flights from St. Louis to Italy

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Cheap flight deals from St. Louis to Italy

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$585 (United Airlines)
One-way from	$416 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$1,136

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

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

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From Lambert-St Louis to Italy

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One-way flight from Lambert-St Louis to Italy

Search Deals

Highest demand for flights based on searches. 24% potential increase in price ($357 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($51 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Find 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 April 24, 2025.

Thu 11/69:00 amSTL - MXP

2 stops17h 45mDelta

Tue 11/1812:00 pmMXP - STL

2 stops27h 10mDelta

Deal found 4/23

$583

Tue 10/141:30 pmSTL - MXP

1 stop13h 30mUnited Airlines

Wed 10/2212:15 pmMXP - STL

2 stops34h 23mUnited Airlines

Deal found 4/23

$585

Thu 11/64:15 pmSTL - MXP

2 stops23h 35mMultiple Airlines

Tue 11/181:05 pmMXP - STL

1 stop33h 21mMultiple Airlines

Deal found 4/23

$593

Thu 11/66:45 amSTL - LIN

2 stops24h 30mUnited Airlines

Tue 11/186:15 amLIN - STL

2 stops16h 11mUnited Airlines

Deal found 4/23

$606

Mon 11/101:27 pmSTL - FCO

1 stop11h 18mUnited Airlines

Tue 11/2512:15 pmFCO - STL

2 stops33h 03mUnited Airlines

Deal found 4/23

$628

Tue 11/114:15 pmSTL - FCO

2 stops34h 45mAir Canada

Tue 11/2512:15 pmFCO - STL

2 stops33h 03mAir Canada

Deal found 4/23

$630

Tue 10/1412:28 pmSTL - LIN

2 stops13h 52mMultiple Airlines

Wed 10/227:00 amLIN - STL

2 stops15h 18mMultiple Airlines

Deal found 4/23

$638

Tue 10/1412:28 pmSTL - LIN

2 stops13h 52mLufthansa

Wed 10/227:00 amLIN - STL

1 stop13h 30mLufthansa

Deal found 4/23

$645

Mon 8/251:30 pmSTL - MXP

2 stops36h 05mScandinavian Airlines

Thu 9/49:15 amMXP - STL

2 stops21h 24mScandinavian Airlines

Deal found 4/23

$661

Mon 11/1011:51 amSTL - FCO

1 stop13h 04mKLM

Mon 11/2412:45 pmFCO - STL

1 stop15h 04mKLM

Deal found 4/23

$695

Tue 10/141:30 pmSTL - VCE

1 stop13h 10mUnited Airlines

Wed 10/2910:25 amVCE - STL

2 stops35h 01mUnited Airlines

Deal found 4/22

$713

Sun 11/24:07 pmSTL - FCO

2 stops18h 38mBritish Airways

Sat 11/88:30 pmFCO - STL

2 stops28h 47mBritish Airways

Deal found 4/22

$726

Best flights from St. Louis to Italy
Discover carefully curated flight deals from St. Louis to Italy that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2025.

Tue 10/141:30 pmSTL - MXP

1 stop13h 30mUnited Airlines

Wed 10/2212:15 pmMXP - STL

2 stops34h 23mUnited Airlines

Deal found 4/23

$585

Tue 10/1412:28 pmSTL - LIN

2 stops13h 52mMultiple Airlines

Wed 10/227:00 amLIN - STL

2 stops15h 18mMultiple Airlines

Deal found 4/23

$638

Tue 10/1412:28 pmSTL - LIN

2 stops13h 52mLufthansa

Wed 10/227:00 amLIN - STL

1 stop13h 30mLufthansa

Deal found 4/23

$645

Mon 8/251:30 pmSTL - MXP

2 stops36h 05mScandinavian Airlines

Thu 9/49:15 amMXP - STL

2 stops21h 24mScandinavian Airlines

Deal found 4/23

$661

Sun 10/1912:28 pmSTL - VCE

2 stops38h 12mAir Canada

Thu 10/306:50 amVCE - STL

2 stops38h 36mAir Canada

Deal found 4/23

$720

Mon 5/56:00 amSTL - VCE

1 stop20h 55mAmerican Airlines

Tue 5/2012:15 pmVCE - STL

1 stop31h 12mAmerican Airlines

Deal found 4/23

$766

Tue 5/61:45 pmSTL - VCE

1 stop13h 10mBritish Airways

Tue 5/1312:15 pmVCE - STL

1 stop15h 43mBritish Airways

Deal found 4/23

$778

Mon 5/57:10 amSTL - VCE

2 stops19h 10mDelta

Tue 5/2011:20 amVCE - STL

1 stop31h 44mDelta

Deal found 4/23

$787

Mon 5/1210:31 amSTL - FCO

1 stop15h 39mIberia

Tue 5/2011:05 amFCO - STL

1 stop17h 47mIberia

Deal found 4/23

$798

Wed 4/3012:00 pmSTL - FCO

2 stops15h 25mAer Lingus

Wed 5/147:30 amFCO - STL

2 stops21h 22mAer Lingus

Deal found 4/23

$1,002

Tue 7/222:18 pmSTL - FCO

2 stops14h 27mKLM

Wed 7/306:30 amFCO - STL

2 stops14h 46mKLM

Deal found 4/23

$1,089

Wed 5/2110:36 amSTL - FCO

2 stops24h 24mFinnair

Wed 5/2811:05 amFCO - STL

1 stop17h 47mFinnair

Deal found 4/22

$1,120

Last-minute flights from St. Louis to Italy
Discover last-minute flight deals from St. Louis to Italy. Data last updated April 24, 2025 and is based on user searches.

Wed 4/3012:00 pmSTL - FCO

2 stops15h 25mAer Lingus

Wed 5/147:30 amFCO - STL

2 stops21h 22mAer Lingus

Deal found 4/23

$1,002

Fri 5/23:43 pmSTL - VCE

2 stops17h 37mUnited Airlines

Mon 5/510:55 amVCE - STL

2 stops56h 41mUnited Airlines

Deal found 4/22

$883

Fri 5/212:00 pmSTL - VCE

2 stops27h 15mBritish Airways

Mon 5/512:15 pmVCE - STL

1 stop15h 43mBritish Airways

Deal found 4/22

$902

Fri 5/210:17 amSTL - LIN

2 stops17h 23mAer Lingus

Mon 5/511:20 amLIN - STL

2 stops41h 32mAer Lingus

Deal found 4/22

$1,111

Fri 5/212:00 pmSTL - VCE

2 stops27h 15mMultiple Airlines

Mon 5/53:20 pmVCE - STL

3 stops32h 55mMultiple Airlines

Deal found 4/22

$1,122

Fri 5/23:30 pmSTL - LIN

1 stop11h 30mLufthansa

Mon 5/57:00 amLIN - STL

2 stops15h 47mLufthansa

Deal found 4/22

$1,153

Fri 5/23:30 pmSTL - MXP

1 stop15h 25mMultiple Airlines

Mon 5/511:15 amMXP - STL

2 stops15h 43mMultiple Airlines

Deal found 4/22

$1,163

Fri 5/23:30 pmSTL - MXP

1 stop15h 25mLufthansa

Mon 5/53:20 pmMXP - STL

1 stop13h 28mLufthansa

Deal found 4/22

$1,170

Fri 5/26:00 pmSTL - LIN

2 stops15h 40mMultiple Airlines

Mon 5/51:00 pmLIN - STL

3 stops35h 15mMultiple Airlines

Deal found 4/22

$1,276

Sat 5/34:45 pmSTL - MXP

2 stops37h 35mUnited Airlines

Sat 5/1011:15 amMXP - STL

2 stops39h 43mUnited Airlines

Deal found 4/23

$926

Sat 5/310:30 amSTL - MXP

2 stops17h 00mDelta

Sat 5/1011:40 amMXP - STL

1 stop15h 59mDelta

Deal found 4/23

$1,010

Sat 5/310:30 amSTL - LIN

2 stops16h 35mDelta

Sat 5/101:00 pmLIN - STL

2 stops17h 38mDelta

Deal found 4/23

$1,036

One-way flights from St. Louis to Italy
Search for one-way flight options from St. Louis to Italy. Find affordable one-way fares based on user searches. Data last updated April 24, 2025.

Fri 5/95:55 pmSTL - FCO

2 stops58h 55mMultiple Airlines

Deal found 4/23

$416

Tue 5/610:31 amSTL - FCO

2 stops16h 54mAer Lingus

Deal found 4/22

$546

Thu 9/251:30 pmSTL - MXP

2 stops38h 00mScandinavian Airlines

Deal found 4/24

$560

Thu 9/256:25 amSTL - MXP

1 stop21h 55mAmerican Airlines

Deal found 4/24

$590

Mon 6/301:30 pmSTL - FCO

1 stop12h 45mUnited Airlines

Deal found 4/21

$603

Thu 9/251:30 pmSTL - MXP

1 stop13h 30mAir Canada

Deal found 4/23

$605

Sun 6/291:30 pmSTL - FCO

2 stops37h 45mAir Canada

Deal found 4/22

$610

Sat 7/54:00 pmSTL - BLQ

2 stops41h 40mUnited Airlines

Deal found 4/23

$632

Fri 5/92:15 pmSTL - FCO

1 stop12h 05mKLM

Deal found 4/23

$661

Fri 5/97:05 amSTL - FCO

1 stop17h 30mDelta

Deal found 4/22

$668

Fri 8/86:00 amSTL - CTA

2 stops18h 55mDelta

Deal found 4/22

$668

Fri 5/95:00 amSTL - FLR

2 stops34h 20mBritish Airways

Deal found 4/23

$681

Cheapflights Fare Finder

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

Tue 10/14

1:30 pm-10:00 am

1 stop13h 30m

Milan Malpensa

Wed 10/22

12:15 pm-3:38 pm

2 stops34h 23m

$585

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Tue 10/14

12:28 pm-9:20 am

2 stops13h 52m

Milan Linate

Wed 10/22

7:00 am-3:18 pm

2 stops15h 18m

$638

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Tue 10/14

12:28 pm-9:20 am

2 stops13h 52m

Milan Linate

Wed 10/22

7:00 am-1:30 pm

1 stop13h 30m

$645

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Mon 8/25

1:30 pm-8:35 am

2 stops36h 05m

Milan Malpensa

Thu 9/4

9:15 am-11:39 pm

2 stops21h 24m

$661

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Mon 5/5

1:30 pm-9:50 am

2 stops37h 20m

Venice Marco Polo

Tue 5/20

6:00 am-7:58 pm

2 stops20h 58m

$740

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Mon 5/5

6:00 am-9:55 am

1 stop20h 55m

Venice Marco Polo

Tue 5/20

12:15 pm-12:27 pm

1 stop31h 12m

$766

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Thu 10/2

12:28 pm-10:00 am

2 stops14h 32m

Milan Malpensa

Sun 10/5

12:15 pm-10:34 am

2 stops29h 19m

$770

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Tue 5/6

1:45 pm-9:55 am

1 stop13h 10m

Venice Marco Polo

Tue 5/13

12:15 pm-8:58 pm

1 stop15h 43m

$778

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Mon 5/5

7:10 am-9:20 am

2 stops19h 10m

Venice Marco Polo

Tue 5/20

11:20 am-12:04 pm

1 stop31h 44m

$787

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 5/12

1:30 pm-9:15 am

1 stop12h 45m

Rome Fiumicino

Tue 5/20

11:30 am-5:23 pm

2 stops36h 53m

$787

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 50 results

...

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, January is the cheapest month in which you can book a flight from St. Louis to Italy (average of $703). Flying from St. Louis to Italy in June is currently the most expensive (average of $1,273). 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 is the cheapest time of day to fly from STL to IT?

When flying from St. Louis to Italy, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Italy by month

In terms of precipitation, rainfall in Italy ranges from 0.6 - 4.4 inches per month. November is typically the wettest month, when rainfall can reach 4.4 in. June is typically the driest time to visit Italy when rainfall is around 0.6 in.

Temperature in Italy by month

If weather is an important factor for your trip to Italy, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

Reviews of airlines servicing Italy

Read reviews from past customers who have flown Delta, KLM and Finnair from St. Louis to Italy. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,920 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,272 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

780 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,685 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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.
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 Aer Lingus ($546), Scandinavian Airlines ($560), and American Airlines ($590).
What are the most popular routes from St. Louis to Italy?
Most travelers choose Lambert-St Louis - Rome Fiumicino, Lambert-St Louis - Milan Malpensa or Lambert-St Louis - Florence Peretola when deciding on the best route 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, January is the cheapest month in which you can book a flight from St. Louis to Italy (average of $703). Flying from St. Louis to Italy in June is currently the most expensive (average of $1,273). 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

Top 9 airlines flying from St. Louis to Italy

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest$573	Average$937	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$670	Average$1,157	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$672	Average$1,106	FlexibilityNo cancel fee	On-time70%
Lufthansa	Cheapest$675	Average$1,324	FlexibilityNo cancel fee	On-time76%
Iberia	Cheapest$681	Average$1,060	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$688	Average$1,215	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$705	Average$1,435	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$720	Average$1,170	FlexibilityNo cancel fee	On-time71%
Air France	Cheapest$861	Average$1,168	FlexibilityNo cancel fee	On-time77%

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$416+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Italy with Cheapflights

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Cheap 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 April 24, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Italy

Cheapest flights from St. Louis to ItalyExplore 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 April 24, 2025.

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 April 24, 2025.

Cheapflights Fare Finder

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

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.

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?

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

Find hourly flight availability from St. Louis to Italy. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

Rainfall in Italy by month

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

Temperature in Italy by month

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

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 April 24, 2025.

Read reviews from past customers who have flown Delta, KLM and Finnair from St. Louis to Italy. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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?

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

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

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

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from St. Louis to Italy

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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 April 24, 2025.