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Cheap flights from St. Louis to Rome from $291

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 9/25. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
12:45 pm - 12:05 pm
STL
-
FCO
16h 20m
1 stop
Finnair Logo
10:00 am - 12:14 am
FCO
-
STL
21h 14m
1 stop
$757Finnair
Sun, Aug 9 - Tue, Aug 25
Lufthansa Logo
7:04 pm - 7:45 am
STL
-
FCO
29h 41m
1 stop
Lufthansa Logo
11:15 am - 3:26 pm
FCO
-
STL
35h 11m
1 stop
$766Lufthansa
Tue, Nov 10 - Tue, Jan 12
Lufthansa Logo
6:00 am - 7:45 am
STL
-
FCO
18h 45m
1 stop
Lufthansa Logo
7:05 am - 1:45 pm
FCO
-
STL
13h 40m
1 stop
$768Lufthansa
Sun, Nov 8 - Wed, Nov 18
United Airlines Logo
8:40 am - 8:30 am
STL
-
FCO
16h 50m
1 stop
United Airlines Logo
1:15 pm - 12:40 pm
FCO
-
STL
30h 25m
2 stops
$769United Airlines
Sun, Nov 8 - Wed, Nov 18
Lufthansa Logo
3:40 pm - 12:40 pm
STL
-
FCO
14h 00m
1 stop
Lufthansa Logo
7:05 am - 1:45 pm
FCO
-
STL
13h 40m
1 stop
$772Lufthansa
Sun, Nov 8 - Wed, Nov 18
Air Canada Logo
6:00 am - 8:55 am
STL
-
FCO
19h 55m
2 stops
Air Canada Logo
1:15 pm - 3:41 pm
FCO
-
STL
33h 26m
2 stops
$773Air Canada
Sun, Nov 8 - Wed, Nov 18
United Airlines Logo
7:33 am - 8:30 am
STL
-
FCO
17h 57m
2 stops
United Airlines Logo
1:15 pm - 12:40 pm
FCO
-
STL
30h 25m
2 stops
$774United Airlines
Mon, Nov 9 - Wed, Nov 18
United Airlines Logo
4:40 pm - 11:55 am
STL
-
FCO
36h 15m
1 stop
United Airlines Logo
11:15 am - 3:26 pm
FCO
-
STL
35h 11m
1 stop
$775United Airlines
Tue, Nov 10 - Tue, Jan 12
Air Canada Logo
8:33 am - 8:55 am
STL
-
FCO
41h 22m
2 stops
Air Canada Logo
11:15 am - 3:41 pm
FCO
-
STL
35h 26m
2 stops
$777Air Canada
Tue, Nov 10 - Tue, Jan 12
Multiple Airlines Logo
2:40 pm - 11:45 am
STL
-
FCO
14h 05m
2 stops
Multiple Airlines Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$782Multiple Airlines
Sun, Aug 9 - Tue, Aug 25

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Lufthansa flights from St. Louis to Rome Fiumicino Airport

Our best Lufthansa deals on St. Louis to Rome Fiumicino Airport flight tickets
Lufthansa
Nov 10
STL7:04 pmLambert-St Louis
29h 41m
1 stop
FCO7:45 amRome Fiumicino
Jan 12
FCO11:15 amRome Fiumicino
35h 11m
1 stop
STL3:26 pmLambert-St Louis
$766
Lufthansa
Nov 8
STL6:00 amLambert-St Louis
18h 45m
1 stop
FCO7:45 amRome Fiumicino
Nov 18
FCO7:05 amRome Fiumicino
13h 40m
1 stop
STL1:45 pmLambert-St Louis
$768
Lufthansa
Nov 8
STL3:40 pmLambert-St Louis
14h 00m
1 stop
FCO12:40 pmRome Fiumicino
Nov 18
FCO7:05 amRome Fiumicino
13h 40m
1 stop
STL1:45 pmLambert-St Louis
$772

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
STL7:33 amLambert-St Louis
18h 22m
2 stops
FCO8:55 amRome Fiumicino
Nov 18
FCO1:15 pmRome Fiumicino
32h 15m
2 stops
STL2:30 pmLambert-St Louis
$773
Air Canada
Nov 10
STL8:33 amLambert-St Louis
41h 22m
2 stops
FCO8:55 amRome Fiumicino
Jan 12
FCO11:15 amRome Fiumicino
35h 26m
2 stops
STL3:41 pmLambert-St Louis
$777
Air Canada
Aug 9
STL2:40 pmLambert-St Louis
14h 05m
2 stops
FCO11:45 amRome Fiumicino
Aug 25
FCO11:30 amRome Fiumicino
15h 54m
2 stops
STL8:24 pmLambert-St Louis
$785

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 July 3, 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

Sun 8/9

12:45 pm-12:05 pm

1 stop16h 20m

Rome Fiumicino

Tue 8/25

10:00 am-12:14 am

1 stop21h 14m

$757

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

7:04 pm-7:45 am

1 stop29h 41m

Rome Fiumicino

Tue 1/12

11:15 am-3:26 pm

1 stop35h 11m

$766

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

6:00 am-7:45 am

1 stop18h 45m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$768

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

8:40 am-8:30 am

1 stop16h 50m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$769
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$772

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

6:00 am-8:55 am

2 stops19h 55m

Rome Fiumicino

Wed 11/18

1:15 pm-3:41 pm

2 stops33h 26m

$773

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

7:33 am-8:30 am

2 stops17h 57m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$774

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

4:40 pm-11:55 am

1 stop36h 15m

Rome Fiumicino

Tue 1/12

11:15 am-3:26 pm

1 stop35h 11m

$775

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

8:33 am-8:55 am

2 stops41h 22m

Rome Fiumicino

Tue 1/12

11:15 am-3:41 pm

2 stops35h 26m

$777

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/9

2:40 pm-11:45 am

2 stops14h 05m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$782

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $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 $664.

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 $958 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 3% 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

14h 05m

Direct flights

None
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?

  • 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
8,091 reviews
Search British Airways flights
LufthansaPriceFrom $500Free CancellationRating
6.8
8,108 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.8
1,532 reviews
Search KLM flights
United AirlinesPriceFrom $559Free CancellationRating
7.4
9,927 reviews
Search United Airlines flights
Air CanadaPriceFrom $564Free CancellationRating
7.1
11,291 reviews
Search Air Canada flights
DeltaPriceFrom $566Free CancellationRating
7.8
8,453 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.1
11,764 reviews
Search American Airlines flights

Traveling to a place near Rome?

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

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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