What airlines fly to Rome Fiumicino Airport?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Rome Fiumicino Airport from St. Louis according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Rome Fiumicino Airport. Keep in mind that there are 8 different airlines that fly to Rome Fiumicino Airport on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from St. Louis to Rome Fiumicino Airport?

Flights connecting via Philadelphia (PHL) have the shortest average one-way travel time: 11h 13m.

Which airport is the most popular layover for flights between St. Louis and Rome Fiumicino Airport?

Chicago (ORD) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Rome Fiumicino Airport?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $659.

Which layover airport has the shortest connection time from St. Louis to Rome Fiumicino Airport?

Philadelphia (PHL) has the shortest average layover time for this route: 1h 15m.

What is the cheapest airline that flies from Lambert-St Louis to Rome Fiumicino?

Air Canada, United Airlines, and British Airways are the most popular carriers operating from Lambert-St Louis to Rome Fiumicino

When did momondo last update prices for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?

Prices for flights from Lambert-St Louis Airport to Rome Fiumicino Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?

As of August 2025, there are 8 operators available to choose from for flights from Lambert-St Louis Airport to Rome Fiumicino Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Rome Fiumicino Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Rome Fiumicino Airport.

What documentation or ID do you need to fly to Rome Fiumicino Airport?

The travel and health documents you'll need for your trip to Rome Fiumicino Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rome Fiumicino Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$331 Cheap Flights from St. Louis to Rome Fiumicino Airport in 2025

Q: What is the typical price of a round-trip flight between St. Louis and Rome Fiumicino Airport?

Prices are currently low for flights on this route. Typical prices usually range from $670 to $1,144. The lowest price recently found on this route was $582.

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Find the cheapest flights from St. Louis to Rome

Round-trip

One-way

Last minute

Cheap round-trip flights

6:30 am - 8:55 amSTL-FCO

19h 25m2 stops

1:15 pm - 3:46 pmFCO-STL

33h 31m2 stops

$582United Airlines

Find Deal

Sun, Nov 9 - Fri, Nov 21

5:24 pm - 8:55 amSTL-FCO

32h 31m2 stops

1:15 pm - 2:25 pmFCO-STL

32h 10m2 stops

$587

Find Deal

Tue, Nov 11 - Wed, Nov 19

8:00 am - 7:45 amSTL-FCO

16h 45m1 stop

1:05 pm - 3:46 pmFCO-STL

33h 41m2 stops

$589United Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 25

4:05 pm - 8:55 amSTL-FCO

33h 50m2 stops

1:05 pm - 3:46 pmFCO-STL

33h 41m2 stops

$591Air Canada

Find Deal

Tue, Nov 11 - Tue, Nov 25

6:43 pm - 11:05 amSTL-FCO

33h 22m2 stops

1:15 pm - 3:46 pmFCO-STL

33h 31m2 stops

$594Air Canada

Find Deal

Sun, Nov 9 - Fri, Nov 21

6:00 am - 9:30 amSTL-FCO

21h 30m1 stop

12:40 pm - 9:38 pmFCO-STL

15h 58m1 stop

$655KLM

Find Deal

Thu, Oct 30 - Thu, Nov 6

6:00 am - 9:30 amSTL-FCO

21h 30m1 stop

12:00 pm - 9:37 amFCO-STL

28h 37m2 stops

$659Delta

Find Deal

Thu, Oct 30 - Thu, Nov 6

1:30 pm - 11:05 amSTL-FCO

14h 35m1 stop

12:45 pm - 9:37 amFCO-STL

26h 52m2 stops

$712Delta

Find Deal

Tue, Oct 21 - Tue, Oct 28

5:28 pm - 11:35 amSTL-FCO

35h 07m2 stops

6:40 pm - 3:44 pmFCO-STL

28h 04m2 stops

$743Lufthansa

Find Deal

Mon, Oct 13 - Mon, Oct 20

12:25 pm - 10:00 amSTL-FCO

14h 35m2 stops

7:00 am - 3:44 pmFCO-STL

15h 44m2 stops

$774Lufthansa

Find Deal

Wed, Oct 8 - Tue, Oct 14

KLM flights from St. Louis to Rome Fiumicino Airport

Our best KLM deals on St. Louis to Rome Fiumicino Airport flight tickets

KLM

Oct 30

STL6:00 amLambert-St Louis

21h 30m

1 stop

FCO9:30 amRome Fiumicino

Nov 6

FCO12:40 pmRome Fiumicino

15h 58m

1 stop

STL9:38 pmLambert-St Louis

$655

Find similar

KLM

Aug 27

STL10:20 amLambert-St Louis

14h 15m

1 stop

FCO7:35 amRome Fiumicino

Sep 3

FCO9:45 amRome Fiumicino

19h 17m

1 stop

STL10:02 pmLambert-St Louis

$1,113

Find similar

Delta flights from St. Louis to Rome Fiumicino Airport

Our best Delta deals on St. Louis to Rome Fiumicino Airport flight tickets

Delta

Oct 30

STL6:00 amLambert-St Louis

21h 30m

1 stop

FCO9:30 amRome Fiumicino

Nov 6

FCO12:00 pmRome Fiumicino

28h 37m

2 stops

STL9:37 amLambert-St Louis

$659

Find similar

Delta

Oct 21

STL1:30 pmLambert-St Louis

14h 35m

1 stop

FCO11:05 amRome Fiumicino

Oct 28

FCO12:45 pmRome Fiumicino

26h 52m

2 stops

STL9:37 amLambert-St Louis

$712

Find similar

Delta

Oct 21

STL10:45 amLambert-St Louis

18h 30m

2 stops

FCO12:15 pmRome Fiumicino

Oct 28

FCO12:45 pmRome Fiumicino

26h 52m

2 stops

STL9:37 amLambert-St Louis

$716

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/9

6:30 am-8:55 am

2 stops19h 25m

Rome Fiumicino

Fri 11/21

1:15 pm-3:46 pm

2 stops33h 31m

$582

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/11

5:24 pm-8:55 am

2 stops32h 31m

Rome Fiumicino

Wed 11/19

1:15 pm-2:25 pm

2 stops32h 10m

$587

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/11

8:00 am-7:45 am

1 stop16h 45m

Rome Fiumicino

Tue 11/25

1:05 pm-3:46 pm

2 stops33h 41m

$589

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/11

4:05 pm-8:55 am

2 stops33h 50m

Rome Fiumicino

Tue 11/25

1:05 pm-3:46 pm

2 stops33h 41m

$591

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/9

6:43 pm-11:05 am

2 stops33h 22m

Rome Fiumicino

Fri 11/21

1:15 pm-3:46 pm

2 stops33h 31m

$594

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 10/30

6:00 am-9:30 am

1 stop21h 30m

Rome Fiumicino

Thu 11/6

12:40 pm-9:38 pm

1 stop15h 58m

$655

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 10/30

6:00 am-9:30 am

1 stop21h 30m

Rome Fiumicino

Thu 11/6

12:00 pm-9:37 am

2 stops28h 37m

$659

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 10/21

1:30 pm-11:05 am

1 stop14h 35m

Rome Fiumicino

Tue 10/28

12:45 pm-9:37 am

2 stops26h 52m

$712

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 10/13

5:28 pm-11:35 am

2 stops35h 07m

Rome Fiumicino

Mon 10/20

6:40 pm-3:44 pm

2 stops28h 04m

$743

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 10/8

12:25 pm-10:00 am

2 stops14h 35m

Rome Fiumicino

Tue 10/14

7:00 am-3:44 pm

2 stops15h 44m

$774

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Rome Fiumicino Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between St. Louis and Rome Fiumicino Airport?

What is the cheapest month to fly to Rome Fiumicino Airport?

The cheapest month to fly to Rome Fiumicino Airport from St. Louis is in January. Flight prices, which tend to average around $709, are often lower during this time because this is during the off-season. If you aren’t able to travel to Rome Fiumicino Airport during the month of January, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $746.

What is the cheapest day to depart on your flight to Rome Fiumicino Airport?

Our data shows that Tuesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $1,037. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $1,259.

What is the cheapest time of day to depart on your flight to Rome Fiumicino Airport?

According to our data, the cheapest time of day to fly to Rome Fiumicino Airport is in the afternoon. momondo users have found flights departing from St. Louis to Rome Fiumicino Airport in the afternoon for as low as $1,077. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $1,148.

How far in advance should I book a flight to Rome Fiumicino Airport?

You are more likely to see cheaper flights to Rome Fiumicino Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Rome Fiumicino Airport for around $1,044 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Rome Fiumicino Airport from St. Louis for as low as $838 on momondo.

When to book flights from St. Louis to Rome Fiumicino Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Rome Fiumicino Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Rome Fiumicino Airport (STL to FCO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Rome Fiumicino Airport

Direct flights	None

There are no direct flights from St. Louis to Rome Fiumicino Airport. There are no popular flight routes from St. Louis to Rome Fiumicino Airport.

Search flight deals

How far is Lambert-St Louis to Rome Fiumicino by plane?
A flight from Lambert-St Louis to Rome Fiumicino will travel around 5048.2 mi. 12h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?
Prices for flights from Lambert-St Louis Airport to Rome Fiumicino Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?
As of August 2025, there are 8 operators available to choose from for flights from Lambert-St Louis Airport to Rome Fiumicino Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Rome Fiumicino Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Rome Fiumicino Airport.
What documentation or ID do you need to fly to Rome Fiumicino Airport?
The travel and health documents you'll need for your trip to Rome Fiumicino Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rome Fiumicino Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Rome Fiumicino Airport?
Based on momondo bookings for flights between St. Louis and Rome Fiumicino Airport, the leading airline is American Airlines, making up 28% of the total bookings. Other popular airlines include United Airlines with 27%, Delta with 11%, and Air Canada with 11%.

Best airlines flying from St. Louis to Rome Fiumicino Airport

Compare and see reviews for airlines that fly from St. Louis to Rome Fiumicino Airport with momondo

Airline	Rating	Free Cancellation	Price
Iberia	PriceFrom $536	Free Cancellation	Rating 7.0 2,889 reviews	Search Iberia flights
United Airlines	PriceFrom $559	Free Cancellation	Rating 7.4 8,940 reviews	Search United Airlines flights
Delta	PriceFrom $587	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
KLM	PriceFrom $664	Free Cancellation	Rating 7.8 1,388 reviews	Search KLM flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Lufthansa	PriceFrom $675	Free Cancellation	Rating 6.8 7,359 reviews	Search Lufthansa flights
Air Canada	PriceFrom $705	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
British Airways	PriceFrom $708	Free Cancellation	Rating 6.7 7,305 reviews	Search British Airways flights

Fiumicino

Civitavecchia

Cassino

Ponza

Pienza

Tivoli

Sperlonga

Ciampino

Gaeta

Santa Marinella

Cortona

Orvieto

Montepulciano

Saturnia

Grosseto

Anzio

Sabaudia

Terracina

Ascoli Piceno

Foligno

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Rome?

Finding the right flight to Rome from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Rome quick and easy, saving you time and money.

Can I find flights from St. Louis to Rome with flexible booking policies on momondo?

Flights from St. Louis to Rome with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Rome?

Once you have performed a search for St. Louis to Rome flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Rome right now. Can momondo alert me if prices change?

Price alerts on flights to Rome from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Flights to Rome Ciampino Airportfrom $506

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Cheap flights from St. Louis to Rome from $331

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Rome departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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KLM flights from St. Louis to Rome Fiumicino Airport

Our best KLM deals on St. Louis to Rome Fiumicino Airport flight tickets

Delta flights from St. Louis to Rome Fiumicino Airport

Our best Delta deals on St. Louis to Rome Fiumicino Airport flight tickets

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How to get the cheapest flight ticket from St. Louis to Rome Fiumicino Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Rome Fiumicino Airport?

What is the cheapest month to fly to Rome Fiumicino Airport?

What is the cheapest day to depart on your flight to Rome Fiumicino Airport?

Our data shows that Tuesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $1,037. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $1,259.

What is the cheapest time of day to depart on your flight to Rome Fiumicino Airport?

How far in advance should I book a flight to Rome Fiumicino Airport?

What is the cheapest airline that flies from Lambert-St Louis to Rome Fiumicino?

Air Canada, United Airlines, and British Airways are the most popular carriers operating from Lambert-St Louis to Rome Fiumicino

What airlines fly to Rome Fiumicino Airport?

Which airport is the most popular layover for flights between St. Louis and Rome Fiumicino Airport?

Chicago (ORD) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Rome Fiumicino Airport?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $659.

Which layover airport has the shortest travel time from St. Louis to Rome Fiumicino Airport?

Flights connecting via Philadelphia (PHL) have the shortest average one-way travel time: 11h 13m.

Which layover airport has the shortest connection time from St. Louis to Rome Fiumicino Airport?

Philadelphia (PHL) has the shortest average layover time for this route: 1h 15m.

When to book flights from St. Louis to Rome Fiumicino Airport

Cheap St. Louis to Rome Fiumicino Airport (STL to FCO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Rome Fiumicino Airport

Direct flights

How far is Lambert-St Louis to Rome Fiumicino by plane?

When did momondo last update prices for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?

How many operators does momondo search for flights from Lambert-St Louis Airport to Rome Fiumicino Airport?

How old do you have to be to fly from Lambert-St Louis Airport to Rome Fiumicino Airport?

What documentation or ID do you need to fly to Rome Fiumicino Airport?

What is the most popular airline from St. Louis to Rome Fiumicino Airport?

Best airlines flying from St. Louis to Rome Fiumicino Airport

Compare and see reviews for airlines that fly from St. Louis to Rome Fiumicino Airport with momondo

Traveling to a place near Rome?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Rome?

Can I find flights from St. Louis to Rome with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Rome?

I’m not ready to book a flight from St. Louis to Rome right now. Can momondo alert me if prices change?

An easier way to manage your Rome Fiumicino Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Rome

Popular cities in Italy

Popular flights according to clicks in the last 7 days on momondo