How long is the flight from Rome to St. Louis?

A quick flight from Rome to St. Louis can take about 14h 13m. United Airlines provides one of the quickest options available for as low as $723. The distance between Rome and St. Louis is about 5050 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Currently, August is the cheapest month in which you can book a flight from Rome to St. Louis (average of $311). Flying from Rome 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 is the cheapest day to fly from Rome to St. Louis?

Travelers seeking maximum savings on their Rome to St. Louis flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from Rome to St. Louis?

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 20% on the overall cost on flights from Rome to St. Louis.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, December can be a great choice for travel to St. Louis. Flights to St. Louis from Rome in December are about $964 on average during December, but can be found for as low as $787.

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

A simple way to save on the total cost of your ticket is to fly from Rome to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 2% on your trip compared to booking a flight in the morning.

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

Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Rome. On average, Lambert-St Louis has 0 inbound flights from Rome per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Rome 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.

$475+ Flights from Rome to St. Louis

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Cheap flight deals from Rome to St. Louis

Round-trip from	$709 (United Airlines)
One-way from	$475 (Kiwi.com)
Popular in	August
Cheapest in	December
Average price	$982

From Rome (ROM) to Lambert-St Louis

Search Deals

One-way flight from Rome (ROM) to Lambert-St Louis

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Highest demand for flights based on searches. 8% potential increase in price ($91 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Rome to St. Louis

Cheapest flights from Rome to St. Louis
Explore the most affordable flight options available from Rome to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Thu 11/271:30 pmFCO - STL

2 stops28h 21mUnited Airlines

Mon 12/111:49 amSTL - FCO

1 stop13h 06mUnited Airlines

Deal found 9/14

$709

Wed 10/111:30 amFCO - STL

2 stops34h 48mAir Canada

Sun 10/51:30 pmSTL - FCO

1 stop12h 45mAir Canada

Deal found 9/15

$722

Thu 11/271:30 pmFCO - STL

1 stop31h 25mLufthansa

Mon 12/111:49 amSTL - FCO

1 stop13h 06mLufthansa

Deal found 9/14

$729

Wed 10/111:30 amFCO - STL

2 stops34h 48mMultiple Airlines

Sun 10/512:25 pmSTL - FCO

2 stops14h 50mMultiple Airlines

Deal found 9/15

$733

Thu 10/306:40 pmFCO - STL

2 stops32h 11mMultiple Airlines

Thu 11/610:44 amSTL - FCO

1 stop15h 16mMultiple Airlines

Deal found 9/14

$770

Tue 9/309:00 amFCO - STL

1 stop18h 34mKLM

Sat 10/45:11 pmSTL - FCO

1 stop31h 24mKLM

Deal found 9/14

$831

Thu 10/301:30 pmFCO - STL

1 stop31h 25mUnited Airlines

Thu 11/611:05 amSTL - FCO

1 stop13h 40mUnited Airlines

Deal found 9/14

$865

Tue 9/306:05 amFCO - STL

2 stops17h 43mAir France

Sat 10/45:11 pmSTL - FCO

1 stop31h 24mAir France

Deal found 9/14

$875

Tue 9/309:05 pmFCO - STL

2 stops30h 10mMultiple Airlines

Sat 10/45:25 pmSTL - FCO

2 stops17h 00mMultiple Airlines

Deal found 9/14

$1,078

Mon 9/2911:00 amFCO - STL

1 stop30h 48mUnited Airlines

Fri 10/312:25 pmSTL - FCO

1 stop12h 30mUnited Airlines

Deal found 9/13

$1,104

Best flights from Rome to St. Louis
Discover carefully curated flight deals from Rome to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Thu 11/271:30 pmFCO - STL

2 stops28h 21mUnited Airlines

Mon 12/16:43 pmSTL - FCO

1 stop30h 02mUnited Airlines

Deal found 9/13

$709

Thu 11/276:45 pmFCO - STL

1 stop26h 10mLufthansa

Mon 12/111:49 amSTL - FCO

1 stop16h 06mLufthansa

Deal found 9/13

$729

Wed 10/111:30 amFCO - STL

2 stops34h 48mMultiple Airlines

Sun 10/512:25 pmSTL - FCO

2 stops14h 50mMultiple Airlines

Deal found 9/15

$733

Tue 9/309:00 amFCO - STL

1 stop18h 34mKLM

Sat 10/45:11 pmSTL - FCO

1 stop31h 24mKLM

Deal found 9/14

$831

Thu 10/306:40 pmFCO - STL

2 stops32h 11mMultiple Airlines

Thu 11/610:44 amSTL - FCO

1 stop15h 16mMultiple Airlines

Deal found 9/14

$770

Wed 1/77:05 amFCO - STL

2 stops22h 53mUnited Airlines

Wed 6/109:10 amSTL - FCO

1 stop18h 05mUnited Airlines

Deal found 9/13

$812

Wed 1/79:35 amFCO - STL

2 stops36h 54mMultiple Airlines

Wed 6/109:10 amSTL - FCO

2 stops17h 05mMultiple Airlines

Deal found 9/13

$859

Last-minute flights from Rome to St. Louis
Discover last-minute flight deals from Rome to St. Louis. Data last updated September 15, 2025 and is based on user searches.

Mon 9/2911:00 amFCO - STL

1 stop30h 48mUnited Airlines

Fri 10/312:25 pmSTL - FCO

1 stop12h 30mUnited Airlines

Deal found 9/13

$1,104

Mon 9/299:45 amFCO - STL

1 stop15h 17mKLM

Fri 10/36:42 pmSTL - FCO

2 stops14h 53mKLM

Deal found 9/13

$1,166

Mon 9/2911:30 amFCO - STL

2 stops31h 58mAir Canada

Fri 10/35:28 pmSTL - FCO

2 stops32h 47mAir Canada

Deal found 9/13

$1,183

Tue 9/309:00 amFCO - STL

1 stop18h 34mKLM

Sat 10/45:11 pmSTL - FCO

1 stop31h 24mKLM

Deal found 9/14

$831

Tue 9/306:05 amFCO - STL

2 stops17h 43mAir France

Sat 10/45:11 pmSTL - FCO

1 stop31h 24mAir France

Deal found 9/14

$875

Tue 9/309:05 pmFCO - STL

2 stops30h 10mMultiple Airlines

Sat 10/45:25 pmSTL - FCO

2 stops17h 00mMultiple Airlines

Deal found 9/14

$1,078

Wed 10/111:30 amFCO - STL

2 stops34h 48mAir Canada

Sun 10/51:30 pmSTL - FCO

1 stop12h 45mAir Canada

Deal found 9/15

$722

Wed 10/111:30 amFCO - STL

2 stops34h 48mMultiple Airlines

Sun 10/512:25 pmSTL - FCO

2 stops14h 50mMultiple Airlines

Deal found 9/15

$733

Thu 10/306:40 pmFCO - STL

2 stops32h 11mMultiple Airlines

Thu 11/69:12 amSTL - FCO

2 stops16h 48mMultiple Airlines

Deal found 9/14

$770

Thu 10/301:30 pmFCO - STL

1 stop31h 25mUnited Airlines

Thu 11/611:05 amSTL - FCO

1 stop13h 40mUnited Airlines

Deal found 9/14

$865

One-way flights from Rome to St. Louis
Search for one-way flight options from Rome to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Mon 11/107:10 pmFCO - STL

3 stops44h 57mMultiple Airlines

Deal found 9/14

$475

Thu 10/237:30 amFCO - STL

2 stops31h 39mAer Lingus

Deal found 9/15

$620

Thu 10/2312:10 pmFCO - STL

1 stop18h 48mBritish Airways

Deal found 9/13

$627

Fri 9/2610:20 amFCO - STL

1 stop17h 46mBritish Airways

Deal found 9/13

$634

Fri 9/2610:20 amFCO - STL

2 stops19h 30mMultiple Airlines

Deal found 9/13

$638

Fri 9/2610:00 amFCO - STL

1 stop15h 22mFinnair

Deal found 9/15

$646

Fri 11/2811:20 amFCO - STL

2 stops19h 42mAer Lingus

Deal found 9/13

$657

Thu 10/237:10 amFCO - STL

2 stops15h 34mLufthansa

Deal found 9/13

$664

Thu 10/2310:00 amFCO - STL

1 stop20h 49mIberia

Deal found 9/15

$683

Fly from

Fly to

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 11/27

1:30 pm-10:51 am

2 stops28h 21m

Lambert-St Louis

Mon 12/1

6:43 pm-7:45 am

1 stop30h 02m

$709

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 11/27

6:45 pm-1:55 pm

1 stop26h 10m

Lambert-St Louis

Mon 12/1

11:49 am-10:55 am

1 stop16h 06m

$729

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 10/1

11:30 am-3:18 pm

2 stops34h 48m

Lambert-St Louis

Sun 10/5

12:25 pm-10:15 am

2 stops14h 50m

$733

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 10/30

6:40 pm-8:51 pm

2 stops32h 11m

Lambert-St Louis

Thu 11/6

10:44 am-9:00 am

1 stop15h 16m

$770

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 1/7

7:05 am-10:58 pm

2 stops22h 53m

Lambert-St Louis

Wed 6/10

9:10 am-10:15 am

1 stop18h 05m

$812

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Tue 9/30

9:00 am-8:34 pm

1 stop18h 34m

Lambert-St Louis

Sat 10/4

5:11 pm-7:35 am

1 stop31h 24m

$831

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 1/7

9:35 am-3:29 pm

2 stops36h 54m

Lambert-St Louis

Wed 6/10

9:10 am-9:15 am

2 stops17h 05m

$859

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Mon 11/10

7:10 pm-9:07 am

3 stops44h 57m

$475

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 10/23

7:30 am-8:09 am

2 stops31h 39m

$620

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 10/23

12:10 pm-11:58 pm

1 stop18h 48m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 14 results

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

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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with British Airways from Rome to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

7,361 reviews

Reviews

1 / 20

6.0

Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

British Airways

6.7

Okay

7,361 reviews

British Airways

6.7

Okay

7,361 reviews

Reviews

1 / 20

6.0

Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

Related info for your journey

What airport do you fly into for flights to St. Louis from Rome?
Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Rome. On average, Lambert-St Louis has 0 inbound flights from Rome per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
How long is the flight from Rome to St. Louis?
A quick flight from Rome to St. Louis can take about 14h 13m. United Airlines provides one of the quickest options available for as low as $723. The distance between Rome and St. Louis is about 5050 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Rome to St. Louis that include hotel bookings?
Yes. In addition to deals on Rome to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Rome to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rome to St. Louis.
Can I find deals for business class flights from Rome to St. Louis?
Yes. Cheapflights offers flight deals from Rome 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 Rome to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Rome to St. Louis (average of $311). Flying from Rome 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

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$475+ Cheap flights from Rome (ROM) 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Rome to St. Louis with Cheapflights

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Cheap flight deals from Rome to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

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Find flight deals from Rome to St. Louis

Cheapest flights from Rome to St. LouisExplore the most affordable flight options available from Rome to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Rome to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with British Airways from Rome to St. Louis by reading reviews from past customers. Users have also rated airlines 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 Rome 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 Rome?

How long is the flight from Rome to St. Louis?

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

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

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

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

Traveling to a place near St. Louis?

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Cheapest flights from Rome to St. Louis
Explore the most affordable flight options available from Rome to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.