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

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

What airlines fly to Rome Fiumicino Airport?

American Airlines, United Airlines and Air Canada are the top three most popular airlines that fly to Rome Fiumicino Airport from St. Louis according to our data. American Airlines is the first choice among our users, with 38% 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.

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 July 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.

$276 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 $1,110 to $1,240. The lowest price recently found on this route was $471.

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Find the cheapest flights from St. Louis to Rome

Round-trip

One-way

Last minute

Cheap round-trip flights

4:05 pm - 8:55 amSTL-FCO

57h 50m2 stops

12:50 pm - 10:32 pmFCO-STL

40h 42m2 stops

$471Air Canada

Find Deal

Fri, Nov 21 - Fri, Dec 5

10:30 am - 7:45 amSTL-FCO

14h 15m1 stop

12:50 pm - 11:20 amFCO-STL

29h 30m2 stops

$483United Airlines

Find Deal

Mon, Dec 1 - Wed, Dec 10

4:05 pm - 11:05 amSTL-FCO

12h 00m1 stop

7:05 am - 1:55 pmFCO-STL

13h 50m1 stop

$487

Find Deal

Mon, Dec 1 - Wed, Dec 10

10:30 am - 8:55 amSTL-FCO

15h 25m2 stops

7:05 am - 1:55 pmFCO-STL

13h 50m1 stop

$500United Airlines

Find Deal

Sun, Nov 9 - Fri, Nov 21

6:30 am - 9:15 amSTL-FCO

19h 45m2 stops

1:15 pm - 3:29 pmFCO-STL

33h 14m2 stops

$503Air Canada

Find Deal

Wed, Oct 22 - Fri, Nov 7

6:00 am - 6:05 amSTL-FCO

18h 05m1 stop

10:15 am - 6:02 pmFCO-STL

14h 47m1 stop

$506Delta

Find Deal

Tue, Oct 28 - Wed, Nov 12

7:20 am - 6:05 amSTL-FCO

16h 45m2 stops

12:00 pm - 9:35 amFCO-STL

28h 35m2 stops

$511Delta

Find Deal

Tue, Oct 28 - Tue, Nov 11

10:36 am - 11:20 amSTL-FCO

17h 44m1 stop

10:00 am - 11:39 pmFCO-STL

20h 39m1 stop

$531British Airways

Find Deal

Wed, Oct 15 - Wed, Oct 22

4:50 pm - 12:40 pmSTL-FCO

13h 50m1 stop

7:10 pm - 10:47 pmFCO-STL

34h 37m2 stops

$553Lufthansa

Find Deal

Wed, Oct 29 - Mon, Nov 10

10:36 am - 11:20 amSTL-FCO

17h 44m1 stop

8:30 pm - 4:23 pmFCO-STL

26h 53m2 stops

$560British Airways

Find Deal

Mon, Oct 13 - Mon, Oct 20

Air Canada flights from St. Louis to Rome Fiumicino Airport

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

Air Canada

Nov 21

STL4:05 pmLambert-St Louis

57h 50m

2 stops

FCO8:55 amRome Fiumicino

Dec 5

FCO12:50 pmRome Fiumicino

40h 42m

2 stops

STL10:32 pmLambert-St Louis

$471

Find similar

Air Canada

Oct 22

STL6:30 amLambert-St Louis

19h 45m

2 stops

FCO9:15 amRome Fiumicino

Nov 7

FCO1:15 pmRome Fiumicino

33h 14m

2 stops

STL3:29 pmLambert-St Louis

$503

Find similar

Air Canada

Oct 27

STL4:05 pmLambert-St Louis

12h 00m

1 stop

FCO10:05 amRome Fiumicino

Nov 12

FCO1:15 pmRome Fiumicino

57h 14m

2 stops

STL3:29 pmLambert-St Louis

$505

Find similar

Iberia flights from St. Louis to Rome Fiumicino Airport

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

Iberia

Aug 16

STL7:44 pmLambert-St Louis

30h 26m

1 stop

FCO9:10 amRome Fiumicino

Sep 12

FCO10:20 amRome Fiumicino

17h 46m

1 stop

STL9:06 pmLambert-St Louis

$566

Find similar

Iberia

Jul 13

STL8:37 amLambert-St Louis

17h 33m

1 stop

FCO9:10 amRome Fiumicino

Jul 15

FCO11:05 amRome Fiumicino

19h 46m

1 stop

STL11:51 pmLambert-St Louis

$2,095

Find similar

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

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 $745.

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 $1,061 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 $851 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	$276
Fastest flight time	12h 00m
Direct flights	None

The best one-way flight to Rome Fiumicino Airport from St. Louis in the past 72 hours is $276. The best round-trip flight deal from St. Louis to Rome Fiumicino Airport found on momondo in the last 72 hours is $471.

The fastest flight from St. Louis to Rome Fiumicino Airport takes 12h 00m

There are no direct flights from St. Louis to Rome Fiumicino Airport. Popular non-direct route for this connection is Lambert-St Louis Airport - Rome Fiumicino Airport.

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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 July 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 30% of the total bookings. Other popular airlines include United Airlines with 28%, Air Canada with 11%, and Delta with 10%.

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
Delta	PriceFrom $670	Free Cancellation	Rating 8.0 7,952 reviews	Search Delta flights
Lufthansa	PriceFrom $675	Free Cancellation	Rating 6.8 7,199 reviews	Search Lufthansa flights
United Airlines	PriceFrom $687	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
British Airways	PriceFrom $708	Free Cancellation	Rating 6.6 7,109 reviews	Search British Airways flights
American Airlines	PriceFrom $713	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Iberia	PriceFrom $739	Free Cancellation	Rating 7.0 2,826 reviews	Search Iberia flights
Air Canada	PriceFrom $779	Free Cancellation	Rating 7.1 9,692 reviews	Search Air Canada flights
KLM	PriceFrom $800	Free Cancellation	Rating 7.8 1,372 reviews	Search KLM flights

Fiumicino

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Ciampino

Montepulciano

Pienza

Tivoli

Sperlonga

Gaeta

Cassino

Cortona

Santa Marinella

Orvieto

Grosseto

Anzio

Ascoli Piceno

Ponza

Foligno

Porto Ercole

Saturnia

Sabaudia

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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 $276

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 10/16. 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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Filter for what you want

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Air Canada flights from St. Louis to Rome Fiumicino Airport

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

Iberia flights from St. Louis to Rome Fiumicino Airport

Our best Iberia 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 Iberia are the most popular carriers operating from Lambert-St Louis to Rome Fiumicino

What airlines fly 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

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

Best Price Found

Fastest flight time

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

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