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

Flights via Charlotte (CLT) offer the lowest average round-trip price of $825.

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 34% of people opting to fly with this airline when traveling to Rome Fiumicino Airport. Keep in mind that there are 7 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 Charlotte (CLT) have the shortest average one-way travel time: 11h 55m.

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

Montreal (YUL) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

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

Charlotte (CLT) has the shortest average layover time for this route: 2h 12m.

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

Lufthansa is the most popular carrier 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 2026, there are 7 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.

$351 Cheap Flights from St. Louis to Rome Fiumicino Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 12:40 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

11:15 am - 3:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 11m1 stop Toronto Pearson Intl

$756Multiple Airlines

Sun, Dec 6 - Tue, Dec 8

7:33 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

7:05 am - 1:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$764Multiple Airlines

Wed, Feb 10 - Wed, Feb 17

11:29 am - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 26m1 stop Newark

1:15 pm - 10:32 amFCO Rome Fiumicino-STL Lambert-St Louis

28h 17m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$770United Airlines

Tue, Nov 17 - Fri, Nov 20

8:33 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 12m1 stop Chicago O'Hare Intl

1:15 pm - 4:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

34h 25m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$770United Airlines

Wed, Dec 2 - Wed, Dec 9

8:05 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 50m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

40h 44m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$773Air Canada

Wed, Dec 2 - Wed, Dec 9

3:40 pm - 12:40 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

7:05 am - 1:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$775Lufthansa

Wed, Feb 10 - Wed, Feb 17

8:33 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

41h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 11:09 pmFCO Rome Fiumicino-STL Lambert-St Louis

40h 54m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$778Air Canada

Sat, Feb 13 - Fri, Feb 19

6:40 am - 9:35 amSTL Lambert-St Louis-FCO Rome Fiumicino

19h 55m1 stop Detroit Metropolitan Wayne County

10:25 am - 10:56 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 31m1 stop Atlanta Hartsfield-Jackson

$790Delta

Wed, Nov 18 - Thu, Nov 26

10:00 am - 11:20 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 20m1 stop Atlanta Hartsfield-Jackson

12:25 pm - 11:23 pmFCO Rome Fiumicino-STL Lambert-St Louis

17h 58m1 stop Minneapolis St Paul

$790Delta

Wed, Dec 2 - Wed, Dec 9

1:00 pm - 6:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

22h 00m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

7:05 am - 1:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$795Lufthansa

Tue, Nov 17 - Wed, Nov 25

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United Airlines flights from St. Louis to Rome Fiumicino Airport

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

United Airlines

Nov 17

STL11:29 amLambert-St Louis

16h 26m

1 stop

FCO10:55 amRome Fiumicino

Nov 20

FCO1:15 pmRome Fiumicino

28h 17m

2 stops

STL10:32 amLambert-St Louis

$770

United Airlines

Dec 6

STL1:00 pmLambert-St Louis

12h 30m

1 stop

FCO8:30 amRome Fiumicino

Dec 8

FCO11:15 amRome Fiumicino

35h 26m

2 stops

STL3:41 pmLambert-St Louis

$775

United Airlines

Nov 17

STL1:40 pmLambert-St Louis

15h 15m

1 stop

FCO11:55 amRome Fiumicino

Nov 20

FCO7:05 amRome Fiumicino

13h 40m

1 stop

STL1:45 pmLambert-St Louis

$778

Delta flights from St. Louis to Rome Fiumicino Airport

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

Delta

Nov 10

STL3:20 pmLambert-St Louis

11h 55m

1 stop

FCO10:15 amRome Fiumicino

Jan 12

FCO10:25 amRome Fiumicino

14h 36m

1 stop

STL6:01 pmLambert-St Louis

$824

Delta

Aug 28

STL2:10 pmLambert-St Louis

13h 50m

1 stop

FCO11:00 amRome Fiumicino

Sep 8

FCO6:30 amRome Fiumicino

21h 05m

2 stops

STL8:35 pmLambert-St Louis

$1,052

Delta

Sep 2

STL7:00 amLambert-St Louis

17h 35m

1 stop

FCO7:35 amRome Fiumicino

Sep 8

FCO6:30 amRome Fiumicino

20h 28m

2 stops

STL7:58 pmLambert-St Louis

$1,084

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

Cheapest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 12/6

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Tue 12/8

11:15 am-3:26 pm

1 stop35h 11m

$756

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 2/10

7:33 am-8:55 am

2 stops18h 22m

Rome Fiumicino

Wed 2/17

7:05 am-1:45 pm

1 stop13h 40m

$764

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 11/17

11:29 am-10:55 am

1 stop16h 26m

Rome Fiumicino

Fri 11/20

1:15 pm-10:32 am

2 stops28h 17m

$770

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

8:33 am-7:45 am

1 stop16h 12m

Rome Fiumicino

Wed 12/9

1:15 pm-4:40 pm

2 stops34h 25m

$770

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

8:05 am-8:55 am

2 stops17h 50m

Rome Fiumicino

Wed 12/9

1:15 pm-10:59 pm

2 stops40h 44m

$773

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 2/10

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Wed 2/17

7:05 am-1:45 pm

1 stop13h 40m

$775

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sat 2/13

8:33 am-8:55 am

2 stops41h 22m

Rome Fiumicino

Fri 2/19

1:15 pm-11:09 pm

2 stops40h 54m

$778

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 11/18

6:40 am-9:35 am

1 stop19h 55m

Rome Fiumicino

Thu 11/26

10:25 am-10:56 pm

1 stop19h 31m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

10:00 am-11:20 am

1 stop18h 20m

Rome Fiumicino

Wed 12/9

12:25 pm-11:23 pm

1 stop17h 58m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 11/17

1:00 pm-6:00 pm

2 stops22h 00m

Rome Fiumicino

Wed 11/25

7:05 am-1:45 pm

1 stop13h 40m

$795

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?

Prices are currently low for flights on this route.

Typical prices usually range from $948 to $1,224.
The lowest price recently found on this route was $756.

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 February. Flight prices, which tend to average around $634, 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 February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $665.

How far in advance should I book a flight from St. Louis 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 $993 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 $729 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

Best Price Found	$351
Fastest flight time	11h 37m
Direct flights	None

The best one-way flight to Rome Fiumicino Airport from St. Louis in the past 72 hours is $351. The best round-trip flight deal from St. Louis to Rome Fiumicino Airport found on momondo in the last 72 hours is $756.

The fastest flight from St. Louis to Rome Fiumicino Airport takes 11h 37m

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

Frequently asked questions about flying from St. Louis to Rome Fiumicino Airport

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. 11h 37m 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 2026, there are 7 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 United Airlines, making up 26% of the total bookings. Other popular airlines include American Airlines with 26%, Delta with 15%, and British Airways 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
British Airways	PriceFrom $472	Free Cancellation	Rating 6.7 8,181 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,203 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,560 reviews	Search KLM flights
United Airlines	PriceFrom $618	Free Cancellation	Rating 7.4 10,106 reviews	Search United Airlines flights
Delta	PriceFrom $665	Free Cancellation	Rating 7.8 8,513 reviews	Search Delta flights
Air Canada	PriceFrom $810	Free Cancellation	Rating 7.1 11,513 reviews	Search Air Canada flights
American Airlines	PriceFrom $825	Free Cancellation	Rating 7.1 11,980 reviews	Search American Airlines flights

Fiumicino

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Gaeta

Orvieto

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Ladispoli

Pienza

Tivoli

Sperlonga

Chianciano Terme

Orbetello

Ponza

Ciampino

Porto Ercole

Terracina

Cassino

Saturnia

Ascoli Piceno

Foligno

Santa Marinella

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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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Cheap flights from St. Louis to Rome from $351

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 11/17. 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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United Airlines flights from St. Louis to Rome Fiumicino Airport

Our best United Airlines 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

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?

How far in advance should I book a flight from St. Louis to Rome Fiumicino Airport?

What is the cheapest airline that flies 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?

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

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

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

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

An easier way to manage your Rome Fiumicino Airport trip

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