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 Air Canada ($451), Aer Lingus ($472), and United Airlines ($559).

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

Most travelers choose Lambert-St Louis - Rome Fiumicino, Lambert-St Louis - Venice Marco Polo 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.

$782+ 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	$563 (United Airlines)
One-way from	$300 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$1,329

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

Search Deals

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 May 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 May 1, 2025.

Thu 11/66:45 amSTL - MXP

2 stops17h 40mDelta

Tue 11/1811:05 amMXP - STL

1 stop19h 34mDelta

Deal found 4/30

$543

Tue 10/71:30 pmSTL - MXP

1 stop13h 30mUnited Airlines

Wed 10/2212:15 pmMXP - STL

2 stops34h 23mUnited Airlines

Deal found 4/30

$563

Thu 11/66:45 amSTL - LIN

2 stops27h 15mUnited Airlines

Tue 11/186:15 amLIN - STL

2 stops16h 11mUnited Airlines

Deal found 4/30

$564

Tue 10/76:35 amSTL - MXP

2 stops20h 25mAir Canada

Wed 10/2212:15 pmMXP - STL

2 stops33h 04mAir Canada

Deal found 4/30

$568

Mon 11/102:49 pmSTL - FCO

1 stop11h 11mIberia

Tue 11/256:55 pmFCO - STL

2 stops33h 46mIberia

Deal found 4/30

$582

Mon 11/106:43 amSTL - FCO

1 stop19h 17mAmerican Airlines

Tue 11/257:35 amFCO - STL

2 stops21h 06mAmerican Airlines

Deal found 4/30

$590

Mon 11/102:49 pmSTL - FCO

1 stop11h 11mMultiple Airlines

Tue 11/251:10 pmFCO - STL

1 stop14h 06mMultiple Airlines

Deal found 4/30

$604

Tue 10/71:30 pmSTL - LIN

2 stops18h 20mAir Canada

Wed 10/227:00 amLIN - STL

2 stops15h 18mAir Canada

Deal found 4/30

$616

Tue 10/712:28 pmSTL - LIN

2 stops13h 52mLufthansa

Wed 10/227:00 amLIN - STL

1 stop13h 30mLufthansa

Deal found 4/30

$623

Tue 11/44:15 pmSTL - FCO

1 stop11h 50mAir Canada

Tue 11/187:05 amFCO - STL

2 stops15h 21mAir Canada

Deal found 4/30

$645

Tue 11/44:15 pmSTL - FCO

1 stop11h 50mUnited Airlines

Tue 11/1812:55 pmFCO - STL

1 stop15h 15mUnited Airlines

Deal found 4/30

$646

Tue 10/141:30 pmSTL - VCE

1 stop13h 10mUnited Airlines

Wed 10/2911:05 amVCE - STL

1 stop16h 05mUnited Airlines

Deal found 4/30

$663

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 May 1, 2025.

Tue 10/71:30 pmSTL - MXP

1 stop13h 30mUnited Airlines

Wed 10/2212:15 pmMXP - STL

2 stops34h 23mUnited Airlines

Deal found 4/30

$563

Tue 10/76:35 amSTL - MXP

2 stops20h 25mAir Canada

Wed 10/2212:15 pmMXP - STL

2 stops33h 04mAir Canada

Deal found 4/30

$568

Tue 10/712:28 pmSTL - LIN

2 stops13h 52mLufthansa

Wed 10/227:00 amLIN - STL

1 stop13h 30mLufthansa

Deal found 4/30

$623

Mon 9/83:30 pmSTL - MXP

2 stops20h 45mScandinavian Airlines

Mon 9/153:30 pmMXP - STL

2 stops39h 09mScandinavian Airlines

Deal found 4/30

$704

Tue 10/79:00 amSTL - VCE

1 stop19h 55mDelta

Wed 10/2211:20 amVCE - STL

1 stop16h 29mDelta

Deal found 4/30

$747

Wed 5/147:30 amSTL - FLR

2 stops22h 25mMultiple Airlines

Wed 5/216:40 amFLR - STL

2 stops20h 18mMultiple Airlines

Deal found 4/30

$747

Tue 10/78:01 pmSTL - VCE

2 stops14h 44mAmerican Airlines

Wed 10/2212:15 pmVCE - STL

1 stop15h 04mAmerican Airlines

Deal found 4/30

$751

Wed 10/19:42 amSTL - VCE

1 stop17h 13mIberia

Sun 10/127:50 pmVCE - STL

2 stops31h 33mIberia

Deal found 4/30

$782

Mon 8/410:46 amSTL - MXP

1 stop15h 39mKLM

Fri 8/1511:40 amMXP - STL

1 stop18h 59mKLM

Deal found 4/30

$801

Sun 9/75:45 pmSTL - LIN

2 stops13h 10mAir France

Wed 9/176:30 amLIN - STL

2 stops16h 28mAir France

Deal found 4/30

$852

Mon 5/510:31 amSTL - FCO

2 stops16h 54mAer Lingus

Thu 5/157:30 amFCO - STL

2 stops18h 03mAer Lingus

Deal found 4/30

$922

Sat 6/148:05 pmSTL - FCO

1 stop29h 55mBritish Airways

Mon 9/151:10 pmFCO - STL

1 stop14h 11mBritish Airways

Deal found 4/30

$950

Last-minute flights from St. Louis to Italy
Discover last-minute flight deals from St. Louis to Italy. Data last updated May 1, 2025 and is based on user searches.

Sun 5/42:03 pmSTL - NAP

2 stops37h 37mAer Lingus

Sat 5/1711:40 amNAP - STL

2 stops41h 35mAer Lingus

Deal found 4/30

$1,009

Mon 5/510:31 amSTL - FCO

2 stops16h 54mAer Lingus

Thu 5/157:30 amFCO - STL

2 stops18h 03mAer Lingus

Deal found 4/30

$922

Mon 5/57:30 amSTL - FCO

3 stops33h 10mMultiple Airlines

Thu 5/227:15 amFCO - STL

2 stops35h 10mMultiple Airlines

Deal found 4/30

$1,057

Tue 5/610:39 amSTL - FCO

1 stop14h 16mUnited Airlines

Sat 5/1710:20 amFCO - STL

2 stops18h 28mUnited Airlines

Deal found 4/30

$6,835

Thu 5/81:30 pmSTL - MXP

1 stop13h 30mAir Canada

Wed 5/2112:15 pmMXP - STL

1 stop14h 43mAir Canada

Deal found 4/30

$793

Thu 5/87:30 amSTL - MXP

2 stops19h 30mMultiple Airlines

Wed 5/216:30 amMXP - STL

2 stops20h 28mMultiple Airlines

Deal found 4/30

$799

Thu 5/81:00 pmSTL - LIN

2 stops14h 00mLufthansa

Wed 5/217:00 amLIN - STL

1 stop13h 30mLufthansa

Deal found 4/30

$1,071

Sun 5/1110:31 amSTL - FCO

2 stops16h 54mAer Lingus

Sun 5/187:30 amFCO - STL

2 stops23h 21mAer Lingus

Deal found 4/30

$962

Sun 5/113:40 pmSTL - FCO

2 stops36h 25mScandinavian Airlines

Sat 5/2411:55 amFCO - STL

2 stops42h 43mScandinavian Airlines

Deal found 5/1

$1,402

Sun 5/116:00 amSTL - FCO

1 stop20h 00mBritish Airways

Sun 5/1811:05 amFCO - STL

1 stop18h 10mBritish Airways

Deal found 4/30

$1,578

Sun 5/111:38 pmSTL - FCO

1 stop12h 22mIberia

Sat 5/2410:00 amFCO - STL

1 stop16h 29mIberia

Deal found 4/30

$1,585

Sun 5/111:30 pmSTL - FCO

1 stop12h 45mAir Canada

Sat 5/2410:00 amFCO - STL

2 stops16h 58mAir Canada

Deal found 5/1

$1,623

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 May 1, 2025.

Wed 7/165:40 pmSTL - FCO

2 stops48h 15mMultiple Airlines

Deal found 4/30

$300

Mon 6/305:47 pmSTL - MXP

2 stops47h 12mMultiple Airlines

Deal found 4/30

$382

Mon 6/305:47 pmSTL - LIN

2 stops41h 53mMultiple Airlines

Deal found 4/30

$420

Mon 6/301:30 pmSTL - MXP

1 stop13h 30mAir Canada

Deal found 4/30

$451

Tue 10/77:23 amSTL - NAP

2 stops20h 17mAer Lingus

Deal found 4/30

$472

Tue 8/267:23 amSTL - VCE

2 stops21h 02mAer Lingus

Deal found 4/30

$482

Thu 5/292:25 pmSTL - CIA

3 stops47h 50mMultiple Airlines

Deal found 4/30

$519

Fri 8/81:22 pmSTL - LIN

2 stops38h 18mAer Lingus

Deal found 4/30

$544

Fri 8/81:30 pmSTL - MXP

1 stop13h 30mUnited Airlines

Deal found 4/30

$559

Thu 9/251:30 pmSTL - MXP

2 stops38h 00mScandinavian Airlines

Deal found 4/30

$560

Tue 5/610:31 amSTL - FCO

2 stops26h 19mAer Lingus

Deal found 4/30

$564

Tue 7/151:30 pmSTL - FCO

1 stop12h 45mUnited Airlines

Deal found 4/30

$578

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 10/7

1:30 pm-10:00 am

1 stop13h 30m

Milan Malpensa

Wed 10/22

12:15 pm-3:38 pm

2 stops34h 23m

$563

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Tue 10/7

6:35 am-10:00 am

2 stops20h 25m

Milan Malpensa

Wed 10/22

12:15 pm-2:19 pm

2 stops33h 04m

$568

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Tue 10/7

1:30 pm-2:50 pm

2 stops18h 20m

Milan Linate

Wed 10/22

7:00 am-3:18 pm

2 stops15h 18m

$616

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Tue 10/7

12:28 pm-9:20 am

2 stops13h 52m

Milan Linate

Wed 10/22

7:00 am-1:30 pm

1 stop13h 30m

$623

St. LouisVenice

STL - VCE

STLVCE

Lambert-St Louis

Tue 10/14

1:30 pm-9:40 am

1 stop13h 10m

Venice Marco Polo

Wed 10/29

11:05 am-9:10 pm

1 stop16h 05m

$663

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 9/22

8:26 am-9:10 am

1 stop17h 44m

Rome Fiumicino

Wed 10/1

11:05 am-8:23 pm

1 stop16h 18m

$685

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Wed 9/17

6:25 am-10:00 am

1 stop20h 35m

Naples

Wed 10/1

12:00 pm-8:21 pm

1 stop15h 21m

$695

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Tue 8/12

1:15 pm-10:00 am

1 stop13h 45m

Naples

Tue 8/26

12:00 pm-9:05 pm

1 stop16h 05m

$699

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Mon 9/8

3:30 pm-7:15 pm

2 stops20h 45m

Milan Malpensa

Mon 9/15

3:30 pm-11:39 pm

2 stops39h 09m

$704

St. LouisNaples

STL - NAP

STLNAP

Lambert-St Louis

Mon 9/8

3:30 pm-6:45 pm

2 stops20h 15m

Naples

Tue 9/16

7:35 pm-11:39 pm

2 stops35h 04m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 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 $1,238). 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 Austrian Airlines 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

7,934 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

7,934 reviews

Delta

8.0

Very good

7,934 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

1,334 reviews

Delta

8.0

Very good

7,934 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

781 reviews

Delta

8.0

Very good

7,934 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

1,275 reviews

Delta

8.0

Very good

7,934 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.

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very good

7,934 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 Air Canada ($451), Aer Lingus ($472), and United Airlines ($559).
What are the most popular routes from St. Louis to Italy?
Most travelers choose Lambert-St Louis - Rome Fiumicino, Lambert-St Louis - Venice Marco Polo 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 $1,238). 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 8 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$1,146	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$672	Average$1,179	FlexibilityNo cancel fee	On-time70%
Lufthansa	Cheapest$675	Average$1,313	FlexibilityNo cancel fee	On-time76%
Iberia	Cheapest$681	Average$1,060	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$699	Average$1,243	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$705	Average$1,435	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$720	Average$1,167	FlexibilityNo cancel fee	On-time71%

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$300+ 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 7/16. 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 May 1, 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 May 1, 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 May 1, 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 May 1, 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 May 1, 2025.

Read reviews from past customers who have flown Delta, KLM and Austrian Airlines 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 8 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 May 1, 2025.