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 32% 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.

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

KLM, Delta, and Lufthansa are the most popular carriers operating from Lambert-St Louis to Rome Fiumicino

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.

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.

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.

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 September 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.

$329 Cheap Flights from St. Louis to Rome Fiumicino Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

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One-way

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8:30 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

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

35h 11m1 stop Toronto Pearson Intl

$565Air Canada

Sun, Nov 8 - Tue, Nov 24

8:30 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 15m1 stop Chicago O'Hare Intl

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

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

$576United Airlines

Sun, Nov 15 - Wed, Nov 25

4:05 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

33h 50m1 stop Toronto Pearson Intl

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

35h 11m1 stop Toronto Pearson Intl

$576Multiple Airlines

Sun, Nov 8 - Tue, Nov 24

1:08 pm - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 37m1 stop Chicago O'Hare Intl

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

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

$576United Airlines

Sun, Nov 15 - Wed, Nov 25

8:30 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

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

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

$579Multiple Airlines

Sun, Nov 15 - Wed, Nov 25

4:05 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

33h 50m1 stop Toronto Pearson Intl

1:15 pm - 12:10 pmFCO Rome Fiumicino-STL Lambert-St Louis

29h 55m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$579Air Canada

Sun, Nov 15 - Wed, Nov 25

5:29 pm - 5:50 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 21m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 26m1 stop Philadelphia

$593American Airlines

Sun, Nov 8 - Wed, Nov 18

5:29 pm - 4:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 26m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 26m1 stop Philadelphia

$593American Airlines

Mon, Nov 9 - Wed, Nov 18

11:35 am - 12:20 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 45m2 stops Chicago O'Hare Intl London Heathrow

1:10 pm - 9:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

15h 49m1 stop Dallas/Fort Worth

$593British Airways

Sun, Nov 8 - Tue, Nov 24

1:20 pm - 4:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

20h 35m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 26m1 stop Philadelphia

$593British Airways

Mon, Nov 9 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

7:27 am - 9:10 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 43m1 stop Chicago O'Hare Intl

12:15 pm - 10:14 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 59m1 stop Philadelphia

$682British Airways

Tue, Sep 29 - Wed, Oct 7

1:49 pm - 9:10 amSTL Lambert-St Louis-FCO Rome Fiumicino

12h 21m1 stop Chicago O'Hare Intl

10:00 am - 8:57 pmFCO Rome Fiumicino-STL Lambert-St Louis

17h 57m1 stop Chicago O'Hare Intl

$686British Airways

Tue, Sep 29 - Wed, Oct 7

12:10 pm - 9:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 05m1 stop Montreal Pierre Elliott Trudeau Intl

10:20 am - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 39m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

$698United Airlines

Tue, Sep 29 - Wed, Oct 7

7:05 am - 7:35 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 30m1 stop Atlanta Hartsfield-Jackson

12:15 pm - 11:54 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 39m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$699Delta

Tue, Sep 29 - Wed, Oct 7

10:29 am - 10:05 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 36m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

9:00 am - 11:21 pmFCO Rome Fiumicino-STL Lambert-St Louis

21h 21m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

$699Delta

Tue, Sep 29 - Wed, Oct 7

5:36 pm - 7:35 amSTL Lambert-St Louis-FCO Rome Fiumicino

30h 59m2 stops Chicago O'Hare Intl Newark

12:55 pm - 10:48 amFCO Rome Fiumicino-STL Lambert-St Louis

28h 53m2 stops Newark Chicago O'Hare Intl

$759United Airlines

Sat, Sep 26 - Sat, Oct 10

2:40 pm - 11:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 05m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

11:00 am - 8:48 amFCO Rome Fiumicino-STL Lambert-St Louis

28h 48m1 stop Newark

$909Multiple Airlines

Sun, Sep 27 - Sun, Oct 4

6:00 am - 11:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

22h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

10:50 am - 2:00 pmFCO Rome Fiumicino-STL Lambert-St Louis

58h 10m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$961Air Canada

Sun, Sep 27 - Sun, Oct 4

6:00 am - 11:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

22h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

10:50 am - 2:00 pmFCO Rome Fiumicino-STL Lambert-St Louis

58h 10m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$1,155Air Canada

Sun, Sep 27 - Sun, Oct 4

12:10 pm - 9:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 05m1 stop Montreal Pierre Elliott Trudeau Intl

8:15 pm - 8:20 pmFCO Rome Fiumicino-STL Lambert-St Louis

31h 05m2 stops Zurich Toronto Pearson Intl

$1,465Multiple Airlines

Sat, Sep 26 - Mon, Sep 28

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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

Air Canada

Nov 8

STL8:30 amLambert-St Louis

17h 25m

2 stops

FCO8:55 amRome Fiumicino

Nov 24

FCO11:15 amRome Fiumicino

35h 11m

1 stop

STL3:26 pmLambert-St Louis

$565

Air Canada

Nov 15

STL8:30 amLambert-St Louis

17h 25m

2 stops

FCO8:55 amRome Fiumicino

Nov 25

FCO1:15 pmRome Fiumicino

28h 17m

2 stops

STL10:32 amLambert-St Louis

$579

Air Canada

Nov 10

STL7:30 amLambert-St Louis

20h 25m

2 stops

FCO10:55 amRome Fiumicino

Jan 12

FCO11:15 amRome Fiumicino

31h 58m

2 stops

STL12:13 pmLambert-St Louis

$589

American Airlines flights from St. Louis to Rome Fiumicino Airport

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

American Airlines

Nov 9

STL5:29 pmLambert-St Louis

16h 26m

2 stops

FCO4:55 pmRome Fiumicino

Nov 18

FCO11:00 amRome Fiumicino

16h 26m

1 stop

STL8:26 pmLambert-St Louis

$594

American Airlines

Nov 8

STL5:29 pmLambert-St Louis

16h 26m

2 stops

FCO4:55 pmRome Fiumicino

Nov 18

FCO7:30 amRome Fiumicino

18h 52m

2 stops

STL7:22 pmLambert-St Louis

$597

American Airlines

Nov 8

STL5:29 pmLambert-St Louis

17h 21m

2 stops

FCO5:50 pmRome Fiumicino

Nov 24

FCO11:00 amRome Fiumicino

19h 58m

2 stops

STL11:58 pmLambert-St Louis

$598

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 11/8

8:30 am-8:55 am

2 stops17h 25m

Rome Fiumicino

Tue 11/24

11:15 am-3:26 pm

1 stop35h 11m

$565

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

8:30 am-7:45 am

1 stop16h 15m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$576

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

4:05 pm-8:55 am

1 stop33h 50m

Rome Fiumicino

Tue 11/24

11:15 am-3:26 pm

1 stop35h 11m

$576

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

1:08 pm-7:45 am

1 stop11h 37m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$576

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

8:30 am-8:55 am

2 stops17h 25m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$579

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

4:05 pm-8:55 am

1 stop33h 50m

Rome Fiumicino

Wed 11/25

1:15 pm-12:10 pm

2 stops29h 55m

$579

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

5:29 pm-5:50 pm

2 stops17h 21m

Rome Fiumicino

Wed 11/18

11:00 am-8:26 pm

1 stop16h 26m

$593

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

5:29 pm-4:55 pm

2 stops16h 26m

Rome Fiumicino

Wed 11/18

11:00 am-8:26 pm

1 stop16h 26m

$593

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

11:35 am-12:20 pm

2 stops17h 45m

Rome Fiumicino

Tue 11/24

1:10 pm-9:59 pm

1 stop15h 49m

$593

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

1:20 pm-4:55 pm

2 stops20h 35m

Rome Fiumicino

Wed 11/18

11:00 am-8:26 pm

1 stop16h 26m

$593

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 $994 to $1,230.
The lowest price recently found on this route was $565.

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 $1,002 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.

Can stopping save me money on St. Louis to Rome Fiumicino Airport flights?

You could potentially save up to 21% on your flight if you consider stops on a St. Louis to Rome Fiumicino Airport flight.

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	$329
Fastest flight time	14h 05m
Direct flights	None

The best one-way flight to Rome Fiumicino Airport from St. Louis in the past 72 hours is $329. The best round-trip flight deal from St. Louis to Rome Fiumicino Airport found on momondo in the last 72 hours is $565.

The fastest flight from St. Louis to Rome Fiumicino Airport takes 14h 05m

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. 14h 05m 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 September 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 25% of the total bookings. Other popular airlines include American Airlines with 25%, Delta with 17%, 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 8,226 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,234 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,575 reviews	Search KLM flights
Delta	PriceFrom $601	Free Cancellation	Rating 7.8 8,594 reviews	Search Delta flights
United Airlines	PriceFrom $744	Free Cancellation	Rating 7.4 10,229 reviews	Search United Airlines flights
Air Canada	PriceFrom $810	Free Cancellation	Rating 7.1 11,671 reviews	Search Air Canada flights
American Airlines	PriceFrom $867	Free Cancellation	Rating 7.0 12,077 reviews	Search American Airlines flights

Fiumicino

Civitavecchia

Gaeta

Orvieto

Ladispoli

Tivoli

Montepulciano

Orbetello

Pienza

Cassino

Chianciano Terme

Ponza

Porto Ercole

Sperlonga

Terracina

Anzio

Ciampino

Saturnia

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 $329

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 3/7. 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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Air Canada flights from St. Louis to Rome Fiumicino Airport

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

American Airlines flights from St. Louis to Rome Fiumicino Airport

Our best American Airlines 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?

Can stopping save me money on St. Louis to Rome Fiumicino Airport flights?

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?

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