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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 7/28. 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.
Lufthansa Logo
6:49 pm - 10:00 pm
STL
-
FCO
20h 11m
2 stops
Lufthansa Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$658Lufthansa
Tue, Aug 18 - Tue, Aug 25
Lufthansa Logo
3:30 pm - 2:05 pm
STL
-
FCO
15h 35m
1 stop
Lufthansa Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$665Lufthansa
Tue, Aug 18 - Tue, Aug 25
British Airways Logo
9:35 pm - 10:55 pm
STL
-
FCO
18h 20m
1 stop
British Airways Logo
1:30 pm - 11:55 pm
FCO
-
STL
17h 25m
1 stop
$684British Airways
Wed, Aug 12 - Wed, Aug 19
United Airlines Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
United Airlines Logo
1:20 pm - 6:27 pm
FCO
-
STL
36h 07m
2 stops
$687United Airlines
Wed, Aug 12 - Wed, Aug 19
Air Canada Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
Air Canada Logo
11:30 am - 6:27 pm
FCO
-
STL
13h 57m
1 stop
$688Air Canada
Wed, Aug 5 - Wed, Aug 19
United Airlines Logo
7:45 am - 10:20 am
STL
-
FCO
19h 35m
2 stops
United Airlines Logo
12:25 pm - 3:48 pm
FCO
-
STL
34h 23m
2 stops
$689United Airlines
Wed, Apr 15 - Wed, Apr 22
British Airways Logo
1:01 pm - 10:20 am
STL
-
FCO
14h 19m
1 stop
British Airways Logo
1:30 pm - 11:55 pm
FCO
-
STL
17h 25m
1 stop
$691British Airways
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
4:05 pm - 11:00 pm
STL
-
FCO
24h 55m
2 stops
Multiple Airlines Logo
11:30 am - 9:08 pm
FCO
-
STL
40h 38m
2 stops
$693Multiple Airlines
Mon, Mar 23 - Tue, Mar 31
American Airlines Logo
11:06 am - 11:20 am
STL
-
FCO
17h 14m
1 stop
American Airlines Logo
12:15 pm - 7:29 pm
FCO
-
STL
14h 14m
1 stop
$696American Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
1:13 pm - 11:50 am
STL
-
FCO
15h 37m
2 stops
Multiple Airlines Logo
6:50 am - 6:27 pm
FCO
-
STL
18h 37m
2 stops
$697Multiple Airlines
Wed, Aug 5 - Wed, Aug 19

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
Aug 12
STL9:35 pmLambert-St Louis
18h 20m
1 stop
FCO10:55 pmRome Fiumicino
Aug 19
FCO1:30 pmRome Fiumicino
17h 25m
1 stop
STL11:55 pmLambert-St Louis
$684
British Airways
Aug 5
STL1:01 pmLambert-St Louis
14h 19m
1 stop
FCO10:20 amRome Fiumicino
Aug 19
FCO1:30 pmRome Fiumicino
17h 25m
1 stop
STL11:55 pmLambert-St Louis
$691
British Airways
Aug 9
STL1:01 pmLambert-St Louis
14h 19m
1 stop
FCO10:20 amRome Fiumicino
Aug 22
FCO1:10 pmRome Fiumicino
16h 53m
1 stop
STL11:03 pmLambert-St Louis
$741

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
Aug 5
STL12:10 pmLambert-St Louis
14h 05m
1 stop
FCO9:15 amRome Fiumicino
Aug 19
FCO11:30 amRome Fiumicino
13h 57m
1 stop
STL6:27 pmLambert-St Louis
$688
Air Canada
Aug 5
STL12:10 pmLambert-St Louis
14h 05m
1 stop
FCO9:15 amRome Fiumicino
Aug 19
FCO6:50 amRome Fiumicino
20h 12m
2 stops
STL8:02 pmLambert-St Louis
$702
Air Canada
Apr 14
STL4:05 pmLambert-St Louis
34h 10m
2 stops
FCO9:15 amRome Fiumicino
Apr 22
FCO12:25 pmRome Fiumicino
40h 22m
2 stops
STL9:47 pmLambert-St Louis
$713

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 26, 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 8/18

6:49 pm-10:00 pm

2 stops20h 11m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$658

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$665

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/12

9:35 pm-10:55 pm

1 stop18h 20m

Rome Fiumicino

Wed 8/19

1:30 pm-11:55 pm

1 stop17h 25m

$684

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/12

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

1:20 pm-6:27 pm

2 stops36h 07m

$687

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

11:30 am-6:27 pm

1 stop13h 57m

$688

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

7:45 am-10:20 am

2 stops19h 35m

Rome Fiumicino

Wed 4/22

12:25 pm-3:48 pm

2 stops34h 23m

$689

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

1:01 pm-10:20 am

1 stop14h 19m

Rome Fiumicino

Wed 8/19

1:30 pm-11:55 pm

1 stop17h 25m

$691

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 3/23

4:05 pm-11:00 pm

2 stops24h 55m

Rome Fiumicino

Tue 3/31

11:30 am-9:08 pm

2 stops40h 38m

$693

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

11:06 am-11:20 am

1 stop17h 14m

Rome Fiumicino

Wed 4/22

12:15 pm-7:29 pm

1 stop14h 14m

$696

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

1:13 pm-11:50 am

2 stops15h 37m

Rome Fiumicino

Wed 8/19

6:50 am-6:27 pm

2 stops18h 37m

$697

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $908 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 08m

Direct flights

None
The fastest flight from St. Louis to Rome Fiumicino Airport takes 12h 08m
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 08m 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
7,771 reviews
Search British Airways flights
LufthansaPriceFrom $506Free CancellationRating
6.8
7,814 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.7
1,460 reviews
Search KLM flights
United AirlinesPriceFrom $549Free CancellationRating
7.4
9,348 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,240 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.2
11,352 reviews
Search American Airlines flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,748 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
Saturnia
Santa Marinella
Ciampino
Sabaudia
Grosseto
Ascoli Piceno
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.

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