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Cheap flights from St. Louis to Rome from $371

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 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:42 pm - 11:05 am
STL
-
FCO
36h 23m
2 stops
Scandinavian Airlines Logo
11:55 am - 11:37 pm
FCO
-
STL
42h 42m
2 stops
$654Scandinavian Airlines
Mon, Aug 31 - Wed, Sep 9
Multiple Airlines Logo
1:13 pm - 3:05 pm
STL
-
FCO
18h 52m
2 stops
Multiple Airlines Logo
6:50 am - 8:02 pm
FCO
-
STL
20h 12m
2 stops
$721Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
3:30 pm - 2:05 pm
STL
-
FCO
15h 35m
1 stop
Multiple Airlines Logo
6:50 am - 8:02 pm
FCO
-
STL
20h 12m
2 stops
$727Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
3:30 pm - 12:30 pm
STL
-
FCO
14h 00m
1 stop
Multiple Airlines Logo
6:50 am - 6:27 pm
FCO
-
STL
18h 37m
2 stops
$747Multiple Airlines
Sun, Aug 16 - Sun, Aug 23
Air Canada Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
Air Canada Logo
6:50 am - 6:27 pm
FCO
-
STL
18h 37m
2 stops
$757Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
Air Canada Logo
2:20 pm - 6:27 pm
FCO
-
STL
35h 07m
1 stop
$758Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
11:25 am - 9:15 am
STL
-
FCO
14h 50m
2 stops
Air Canada Logo
6:50 am - 6:27 pm
FCO
-
STL
18h 37m
2 stops
$761Air Canada
Wed, Aug 5 - Wed, Aug 19
United Airlines Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
United Airlines Logo
9:45 am - 9:22 pm
FCO
-
STL
18h 37m
1 stop
$765United Airlines
Wed, Aug 5 - Wed, Aug 19
Scandinavian Airlines Logo
3:42 pm - 11:05 am
STL
-
FCO
36h 23m
2 stops
Scandinavian Airlines Logo
9:30 am - 8:50 pm
FCO
-
STL
18h 20m
2 stops
$767Scandinavian Airlines
Sun, Aug 16 - Sun, Aug 23
United Airlines Logo
8:17 am - 7:55 am
STL
-
FCO
17h 38m
2 stops
United Airlines Logo
9:45 am - 9:08 pm
FCO
-
STL
18h 23m
1 stop
$775United Airlines
Mon, Mar 23 - Tue, Mar 31

Iberia flights from St. Louis to Rome Fiumicino Airport

Our best Iberia deals on St. Louis to Rome Fiumicino Airport flight tickets
Iberia
Aug 5
STL10:08 amLambert-St Louis
18h 57m
1 stop
FCO12:05 pmRome Fiumicino
Aug 19
FCO1:10 pmRome Fiumicino
16h 53m
1 stop
STL11:03 pmLambert-St Louis
$716
Iberia
Mar 10
STL2:00 pmLambert-St Louis
13h 00m
1 stop
FCO9:00 amRome Fiumicino
Mar 17
FCO10:30 pmRome Fiumicino
30h 32m
2 stops
STL11:02 pmLambert-St Louis
$1,337
Iberia
Mar 10
STL2:00 pmLambert-St Louis
13h 00m
1 stop
FCO9:00 amRome Fiumicino
Mar 17
FCO10:30 pmRome Fiumicino
30h 32m
2 stops
STL11:02 pmLambert-St Louis
$1,360

British Airways flights from St. Louis to Rome Fiumicino Airport

Our best British Airways deals on St. Louis to Rome Fiumicino Airport flight tickets
British Airways
Apr 26
STL9:40 pmLambert-St Louis
18h 00m
1 stop
FCO10:40 pmRome Fiumicino
May 12
FCO7:40 amRome Fiumicino
18h 50m
1 stop
STL7:30 pmLambert-St Louis
$794
British Airways
Mar 18
STL9:35 amLambert-St Louis
19h 10m
1 stop
FCO10:45 amRome Fiumicino
Mar 30
FCO12:15 pmRome Fiumicino
17h 47m
1 stop
STL11:02 pmLambert-St Louis
$816
British Airways
Apr 16
STL2:12 pmLambert-St Louis
12h 38m
1 stop
FCO9:50 amRome Fiumicino
Apr 20
FCO10:00 amRome Fiumicino
19h 17m
1 stop
STL10:17 pmLambert-St Louis
$864

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Rome Fiumicino Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 9, 2026.
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 - FCO

STLFCO

Lambert-St Louis

Mon 8/31

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

Wed 9/9

11:55 am-11:37 pm

2 stops42h 42m

$654

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

1:13 pm-3:05 pm

2 stops18h 52m

Rome Fiumicino

Wed 8/19

6:50 am-8:02 pm

2 stops20h 12m

$721

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

Wed 8/19

6:50 am-8:02 pm

2 stops20h 12m

$727
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/16

3:30 pm-12:30 pm

1 stop14h 00m

Rome Fiumicino

Sun 8/23

6:50 am-6:27 pm

2 stops18h 37m

$747

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

6:50 am-6:27 pm

2 stops18h 37m

$757

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

2:20 pm-6:27 pm

1 stop35h 07m

$758

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

11:25 am-9:15 am

2 stops14h 50m

Rome Fiumicino

Wed 8/19

6:50 am-6:27 pm

2 stops18h 37m

$761

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

9:45 am-9:22 pm

1 stop18h 37m

$765

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/16

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

Sun 8/23

9:30 am-8:50 pm

2 stops18h 20m

$767

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 3/23

8:17 am-7:55 am

2 stops17h 38m

Rome Fiumicino

Tue 3/31

9:45 am-9:08 pm

1 stop18h 23m

$775

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Rome from

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?

The cheapest month to fly to Rome Fiumicino Airport from St. Louis is in February. Flight prices, which tend to average around $544, 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 $643.

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 $892 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 $731 on momondo.

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

You could potentially save up to 16% 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

Fastest flight time

12h 38m

Direct flights

None
The fastest flight from St. Louis to Rome Fiumicino Airport takes 12h 38m
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 38m 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?

  • 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?

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 AirwaysPriceFrom $472Free CancellationRating
6.7
7,779 reviews
Search British Airways flights
LufthansaPriceFrom $506Free CancellationRating
6.8
7,835 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.8
1,468 reviews
Search KLM flights
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,406 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,269 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.1
11,399 reviews
Search American Airlines flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,795 reviews
Search Air Canada flights

Traveling to a place near Rome?

Book flights to Rome if you plan to visit one of these locations
Fiumicino
Civitavecchia
Cassino
Ponza
Gaeta
Montepulciano
Pienza
Tivoli
Orvieto
Sperlonga
Chianciano Terme
Terracina
Santa Marinella
Ascoli Piceno
Ciampino
Sabaudia
Saturnia
Grosseto
Cortona
Orbetello

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.

An easier way to manage your Rome Fiumicino Airport trip

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