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Cheap flights from St. Louis to Rome from $396

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 11/7. 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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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.
Iberia Logo
10:16 am - 12:05 pm
STL
-
FCO
18h 49m
1 stop
Iberia Logo
1:10 pm - 11:42 pm
FCO
-
STL
17h 32m
1 stop
$791Iberia
Wed, Aug 5 - Wed, Aug 19
Scandinavian Airlines Logo
3:39 pm - 6:35 pm
STL
-
FCO
19h 56m
2 stops
Scandinavian Airlines Logo
7:25 pm - 11:37 pm
FCO
-
STL
35h 12m
2 stops
$801Scandinavian Airlines
Mon, Aug 24 - Wed, Sep 2
Air Canada Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
Air Canada Logo
2:20 pm - 3:38 pm
FCO
-
STL
32h 18m
2 stops
$804Air Canada
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
2:40 pm - 11:45 am
STL
-
FCO
14h 05m
2 stops
Multiple Airlines Logo
1:20 pm - 1:25 pm
FCO
-
STL
31h 05m
1 stop
$806Multiple Airlines
Sun, Aug 16 - Mon, Aug 24
Multiple Airlines Logo
3:30 pm - 12:30 pm
STL
-
FCO
14h 00m
1 stop
Multiple Airlines Logo
2:20 pm - 6:42 pm
FCO
-
STL
35h 22m
1 stop
$807Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
8:00 am - 9:15 am
STL
-
FCO
18h 15m
2 stops
Air Canada Logo
2:20 pm - 3:38 pm
FCO
-
STL
32h 18m
2 stops
$808Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
6:00 am - 9:15 am
STL
-
FCO
20h 15m
2 stops
Air Canada Logo
2:20 pm - 3:38 pm
FCO
-
STL
32h 18m
2 stops
$809Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
8:55 am - 9:15 am
STL
-
FCO
17h 20m
2 stops
Air Canada Logo
2:20 pm - 3:38 pm
FCO
-
STL
32h 18m
2 stops
$812Air Canada
Wed, Aug 5 - Wed, Aug 19
Iberia Logo
6:54 pm - 6:15 pm
STL
-
FCO
16h 21m
2 stops
Iberia Logo
8:25 pm - 11:42 pm
FCO
-
STL
34h 17m
2 stops
$813Iberia
Sun, Aug 16 - Mon, Aug 24
British Airways Logo
4:32 pm - 9:10 am
STL
-
FCO
33h 38m
1 stop
British Airways Logo
11:00 am - 8:58 am
FCO
-
STL
28h 58m
1 stop
$814British Airways
Mon, Oct 12 - Fri, Nov 6

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
STL10:16 amLambert-St Louis
18h 49m
1 stop
FCO12:05 pmRome Fiumicino
Aug 19
FCO1:10 pmRome Fiumicino
17h 32m
1 stop
STL11:42 pmLambert-St Louis
$791
Iberia
Aug 16
STL6:54 pmLambert-St Louis
16h 21m
2 stops
FCO6:15 pmRome Fiumicino
Aug 24
FCO8:25 pmRome Fiumicino
34h 17m
2 stops
STL11:42 pmLambert-St Louis
$813
Iberia
Aug 10
STL3:35 pmLambert-St Louis
13h 30m
1 stop
FCO12:05 pmRome Fiumicino
Aug 31
FCO1:10 pmRome Fiumicino
17h 32m
1 stop
STL11:42 pmLambert-St Louis
$841

Scandinavian Airlines flights from St. Louis to Rome Fiumicino Airport

Our best Scandinavian Airlines deals on St. Louis to Rome Fiumicino Airport flight tickets
Scandinavian Airlines
Aug 24
STL3:39 pmLambert-St Louis
19h 56m
2 stops
FCO6:35 pmRome Fiumicino
Sep 2
FCO7:25 pmRome Fiumicino
35h 12m
2 stops
STL11:37 pmLambert-St Louis
$801
Scandinavian Airlines
Sep 20
STL3:42 pmLambert-St Louis
36h 23m
2 stops
FCO11:05 amRome Fiumicino
Oct 1
FCO9:40 amRome Fiumicino
20h 57m
2 stops
STL11:37 pmLambert-St Louis
$899

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 May 11, 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
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

10:16 am-12:05 pm

1 stop18h 49m

Rome Fiumicino

Wed 8/19

1:10 pm-11:42 pm

1 stop17h 32m

$791

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/24

3:39 pm-6:35 pm

2 stops19h 56m

Rome Fiumicino

Wed 9/2

7:25 pm-11:37 pm

2 stops35h 12m

$801

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-3:38 pm

2 stops32h 18m

$804

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/16

2:40 pm-11:45 am

2 stops14h 05m

Rome Fiumicino

Mon 8/24

1:20 pm-1:25 pm

1 stop31h 05m

$806

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

3:30 pm-12:30 pm

1 stop14h 00m

Rome Fiumicino

Wed 8/19

2:20 pm-6:42 pm

1 stop35h 22m

$807

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

8:00 am-9:15 am

2 stops18h 15m

Rome Fiumicino

Wed 8/19

2:20 pm-3:38 pm

2 stops32h 18m

$808

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

6:00 am-9:15 am

2 stops20h 15m

Rome Fiumicino

Wed 8/19

2:20 pm-3:38 pm

2 stops32h 18m

$809

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

8:55 am-9:15 am

2 stops17h 20m

Rome Fiumicino

Wed 8/19

2:20 pm-3:38 pm

2 stops32h 18m

$812

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/16

6:54 pm-6:15 pm

2 stops16h 21m

Rome Fiumicino

Mon 8/24

8:25 pm-11:42 pm

2 stops34h 17m

$813

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 10/12

4:32 pm-9:10 am

1 stop33h 38m

Rome Fiumicino

Fri 11/6

11:00 am-8:58 am

1 stop28h 58m

$814

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 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 $930 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 $754 on momondo.

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

You could potentially save up to 15% 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 25m

Direct flights

None
The fastest flight from St. Louis to Rome Fiumicino Airport takes 12h 25m
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. 12h 25m 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
7,969 reviews
Search British Airways flights
LufthansaPriceFrom $500Free CancellationRating
6.8
7,988 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.8
1,513 reviews
Search KLM flights
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,698 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,452 reviews
Search Delta flights
Air CanadaPriceFrom $564Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
American AirlinesPriceFrom $665Free CancellationRating
7.1
11,669 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
Montepulciano
Ponza
Pienza
Chianciano Terme
Ladispoli
Sperlonga
Terracina
Tivoli
Ciampino
Santa Marinella
Grosseto
Orbetello
Saturnia
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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