Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Rome from $348

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 5/11. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:53 pm - 9:50 am
STL
-
FCO
32h 57m
1 stop
British Airways Logo
12:15 pm - 7:29 pm
FCO
-
STL
14h 14m
1 stop
$511British Airways
Tue, Apr 14 - Wed, Apr 22
Multiple Airlines Logo
5:21 pm - 6:00 pm
STL
-
FCO
17h 39m
2 stops
Multiple Airlines Logo
10:30 am - 10:17 pm
FCO
-
STL
18h 47m
2 stops
$516Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Finnair Logo
5:21 pm - 6:00 pm
STL
-
FCO
17h 39m
2 stops
Finnair Logo
10:00 am - 10:17 pm
FCO
-
STL
19h 17m
1 stop
$517Finnair
Wed, Apr 15 - Wed, Apr 22
British Airways Logo
5:53 pm - 9:50 am
STL
-
FCO
32h 57m
1 stop
British Airways Logo
4:05 pm - 4:41 pm
FCO
-
STL
31h 36m
2 stops
$524British Airways
Tue, Apr 14 - Wed, Apr 22
Iberia Logo
8:03 pm - 1:55 pm
STL
-
FCO
34h 52m
2 stops
Iberia Logo
7:05 pm - 10:17 pm
FCO
-
STL
34h 12m
2 stops
$531Iberia
Tue, Apr 14 - Wed, Apr 22
Lufthansa Logo
4:05 pm - 7:55 am
STL
-
FCO
33h 50m
2 stops
Lufthansa Logo
10:30 am - 11:51 pm
FCO
-
STL
19h 21m
1 stop
$541Lufthansa
Tue, Mar 17 - Thu, Mar 26
British Airways Logo
1:29 pm - 7:05 am
STL
-
FCO
34h 36m
1 stop
British Airways Logo
10:00 am - 7:33 pm
FCO
-
STL
16h 33m
1 stop
$561British Airways
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
8:15 pm - 10:20 am
STL
-
FCO
31h 05m
2 stops
United Airlines Logo
12:25 pm - 9:08 pm
FCO
-
STL
39h 43m
2 stops
$601United Airlines
Tue, Apr 14 - Wed, Apr 22
KLM Logo
6:50 pm - 10:50 am
STL
-
FCO
33h 00m
1 stop
KLM Logo
6:30 am - 2:29 pm
FCO
-
STL
14h 59m
2 stops
$609KLM
Tue, Apr 14 - Wed, Apr 22
Delta Logo
7:03 am - 7:40 am
STL
-
FCO
18h 37m
2 stops
Delta Logo
9:05 am - 4:32 pm
FCO
-
STL
13h 27m
1 stop
$610Delta
Wed, Mar 18 - Thu, Mar 26

ITA Airways flights from St. Louis to Rome Fiumicino Airport

Our best ITA Airways deals on St. Louis to Rome Fiumicino Airport flight tickets
ITA Airways
Feb 19
STL5:14 amLambert-St Louis
23h 21m
1 stop
FCO11:35 amRome Fiumicino
Feb 23
FCO10:20 amRome Fiumicino
38h 20m
1 stop
STL5:40 pmLambert-St Louis
$1,009
ITA Airways
Mar 4
STL11:22 amLambert-St Louis
17h 13m
1 stop
FCO11:35 amRome Fiumicino
Mar 25
FCO10:15 amRome Fiumicino
31h 14m
1 stop
STL11:29 amLambert-St Louis
$1,205
ITA Airways
Mar 4
STL11:22 amLambert-St Louis
17h 13m
1 stop
FCO11:35 amRome Fiumicino
Mar 27
FCO10:15 amRome Fiumicino
31h 01m
1 stop
STL11:16 amLambert-St Louis
$1,242

Aer Lingus flights from St. Louis to Rome Fiumicino Airport

Our best Aer Lingus deals on St. Louis to Rome Fiumicino Airport flight tickets
Aer Lingus
Feb 27
STL10:37 amLambert-St Louis
41h 03m
2 stops
FCO10:40 amRome Fiumicino
Mar 7
FCO11:35 amRome Fiumicino
27h 03m
2 stops
STL7:38 amLambert-St Louis
$696
Aer Lingus
Feb 20
STL10:37 amLambert-St Louis
41h 03m
2 stops
FCO10:40 amRome Fiumicino
Feb 28
FCO11:35 amRome Fiumicino
28h 00m
2 stops
STL8:35 amLambert-St Louis
$1,083
Aer Lingus
Feb 19
STL10:37 amLambert-St Louis
25h 58m
2 stops
FCO7:35 pmRome Fiumicino
Feb 23
FCO8:15 pmRome Fiumicino
34h 33m
2 stops
STL11:48 pmLambert-St Louis
$1,228

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 February 18, 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

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/14

5:53 pm-9:50 am

1 stop32h 57m

Rome Fiumicino

Wed 4/22

12:15 pm-7:29 pm

1 stop14h 14m

$511

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

5:21 pm-6:00 pm

2 stops17h 39m

Rome Fiumicino

Wed 4/22

10:30 am-10:17 pm

2 stops18h 47m

$516

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

5:21 pm-6:00 pm

2 stops17h 39m

Rome Fiumicino

Wed 4/22

10:00 am-10:17 pm

1 stop19h 17m

$517

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/14

5:53 pm-9:50 am

1 stop32h 57m

Rome Fiumicino

Wed 4/22

4:05 pm-4:41 pm

2 stops31h 36m

$524

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/14

8:03 pm-1:55 pm

2 stops34h 52m

Rome Fiumicino

Wed 4/22

7:05 pm-10:17 pm

2 stops34h 12m

$531

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/17

4:05 pm-7:55 am

2 stops33h 50m

Rome Fiumicino

Thu 3/26

10:30 am-11:51 pm

1 stop19h 21m

$541

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

1:29 pm-7:05 am

1 stop34h 36m

Rome Fiumicino

Wed 4/22

10:00 am-7:33 pm

1 stop16h 33m

$561

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/14

8:15 pm-10:20 am

2 stops31h 05m

Rome Fiumicino

Wed 4/22

12:25 pm-9:08 pm

2 stops39h 43m

$601

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/14

6:50 pm-10:50 am

1 stop33h 00m

Rome Fiumicino

Wed 4/22

6:30 am-2:29 pm

2 stops14h 59m

$609

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 3/18

7:03 am-7:40 am

2 stops18h 37m

Rome Fiumicino

Thu 3/26

9:05 am-4:32 pm

1 stop13h 27m

$610

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 $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 $899 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

14h 00m

Direct flights

None
The fastest flight from St. Louis to Rome Fiumicino Airport takes 14h 00m
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. 14h 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?

  • 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
7,751 reviews
Search British Airways flights
LufthansaPriceFrom $506Free CancellationRating
6.8
7,790 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.7
1,457 reviews
Search KLM flights
United AirlinesPriceFrom $549Free CancellationRating
7.4
9,315 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,208 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.2
11,307 reviews
Search American Airlines flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,733 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
Pienza
Ponza
Montepulciano
Tivoli
Sperlonga
Gaeta
Orvieto
Chianciano Terme
Cortona
Terracina
Ciampino
Saturnia
Santa Marinella
Sabaudia
Grosseto
Ascoli Piceno
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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 3/20
Fri 3/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Rome

Popular cities in Italy

Popular flights according to clicks in the last 7 days on momondo
Flights to Milan Malpensa Airportfrom $359
Flights to Milan Linate Airportfrom $395
Flights to Venice Marco Polo Airportfrom $369
Flights to Rome Ciampino Airportfrom $458
Flights to Venice Treviso A. Canova Airportfrom $448