$355+ Cheap flights from St. Louis (STL) to Fiumicino (FCO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCO
apr. 23 — apr. 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Leonardo da Vinci/Fiumicino with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Leonardo da Vinci/Fiumicino
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to Leonardo da Vinci/FiumicinoExplore the most affordable flight options available from St. Louis to Leonardo da Vinci/Fiumicino. Find the lowest fares from popular airlines and budget airlines, with prices last updated on maart 24, 2026.
Explore the most affordable flight options available from St. Louis to Leonardo da Vinci/Fiumicino. Find the lowest fares from popular airlines and budget airlines, with prices last updated on maart 24, 2026.
This FlightHub deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 9/111:30 pm
STL
- FCO
2 stops36h 10m
Scandinavian Airlines
wo 9/3011:55 am
FCO
- STL
2 stops42h 42m
Scandinavian Airlines
Deal found 3/21![Scandinavian Airlines logo]()
$727
This oojo deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 11/181:20 pm
STL
- FCO
1 stop14h 25m
British Airways
do 11/2611:00 am
FCO
- STL
1 stop15h 30m
British Airways
Deal found 3/21![British Airways logo]()
$735
This American Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 11/182:50 pm
STL
- FCO
2 stops14h 35m
American Airlines
do 11/2611:00 am
FCO
- STL
1 stop18h 29m
American Airlines
Deal found 3/21![American Airlines logo]()
$736
This Iberia deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 8/510:14 am
STL
- FCO
1 stop18h 51m
Iberia
wo 8/1910:00 am
FCO
- STL
1 stop17h 19m
Iberia
Deal found 3/24![Iberia logo]()
$740
This oojo deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 8/51:01 pm
STL
- FCO
1 stop14h 19m
British Airways
wo 8/1910:00 am
FCO
- STL
1 stop20h 51m
British Airways
Deal found 3/20![British Airways logo]()
$752
This Cheapflightsfares deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 10/284:50 pm
STL
- FCO
1 stop19h 05m
Lufthansa
vr 11/67:05 am
FCO
- STL
1 stop13h 50m
Lufthansa
Deal found 3/24![Lufthansa logo]()
$753
This eDestinos deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 4/2112:27 pm
STL
- FCO
1 stop16h 38m
Iberia
di 4/2810:00 am
FCO
- STL
1 stop19h 19m
Iberia
Deal found 3/22![Iberia logo]()
$754
This Cheapflightsfares deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 8/51:13 pm
STL
- FCO
2 stops15h 37m
Lufthansa
wo 8/1912:45 pm
FCO
- STL
2 stops15h 37m
Lufthansa
Deal found 3/24![Lufthansa logo]()
$757
This KAYAK deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 9/183:42 pm
STL
- FCO
2 stops33h 58m
Scandinavian Airlines
vr 9/259:40 am
FCO
- STL
2 stops20h 57m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$761
Best flights from St. Louis to Leonardo da Vinci/FiumicinoDiscover carefully curated flight deals from St. Louis to Leonardo da Vinci/Fiumicino that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated maart 24, 2026.
Discover carefully curated flight deals from St. Louis to Leonardo da Vinci/Fiumicino that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated maart 24, 2026.
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 9/125:32 pm
STL
- FCO
2 stops33h 48m
United Airlines
vr 9/186:50 am
FCO
- STL
1 stop13h 35m
United Airlines
Deal found 3/19![United Airlines logo]()
$935
This Finnair deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/45:21 pm
STL
- FCO
2 stops17h 39m
Finnair
vr 5/1510:30 am
FCO
- STL
2 stops18h 49m
Finnair
Deal found 3/19![Finnair logo]()
$938
This oojo deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 8/77:23 am
STL
- FCO
1 stop18h 47m
British Airways
do 8/1310:00 am
FCO
- STL
1 stop17h 19m
British Airways
Deal found 3/19![British Airways logo]()
$981
This KLM deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 5/94:15 pm
STL
- FCO
1 stop32h 40m
KLM
di 5/199:00 am
FCO
- STL
1 stop19h 09m
KLM
Deal found 3/21![KLM logo]()
$1,015
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 4/2711:42 am
STL
- FCO
1 stop12h 53m
Delta
wo 5/69:00 am
FCO
- STL
1 stop14h 42m
Delta
Deal found 3/23![Delta logo]()
$1,056
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 9/56:55 pm
STL
- FCO
1 stop30h 00m
United Airlines
za 9/196:50 am
FCO
- STL
2 stops20h 10m
United Airlines
Deal found 3/24![United Airlines logo]()
$1,011
This Delta deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 7/221:30 pm
STL
- FCO
1 stop16h 10m
Delta
wo 8/510:00 am
FCO
- STL
2 stops20h 01m
Delta
Deal found 3/21![Delta logo]()
$1,071
This Delta deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 6/24:25 pm
STL
- FCO
2 stops15h 00m
Delta
di 6/96:30 am
FCO
- STL
2 stops17h 23m
Delta
Deal found 3/21![Delta logo]()
$1,337
Last-minute flights from St. Louis to Leonardo da Vinci/FiumicinoDiscover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated maart 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated maart 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 4/157:45 am
STL
- FCO
2 stops17h 30m
United Airlines
wo 4/226:50 am
FCO
- STL
1 stop13h 35m
United Airlines
Deal found 3/22![United Airlines logo]()
$862
This American Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 4/156:29 am
STL
- FCO
1 stop17h 36m
American Airlines
wo 4/2212:15 pm
FCO
- STL
1 stop14h 14m
American Airlines
Deal found 3/22![American Airlines logo]()
$870
This eDestinos deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 4/2112:27 pm
STL
- FCO
1 stop16h 38m
Iberia
di 4/2810:00 am
FCO
- STL
1 stop19h 19m
Iberia
Deal found 3/22![Iberia logo]()
$754
This Flysmarter deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 4/2112:27 pm
STL
- FCO
1 stop16h 38m
British Airways
di 4/2810:00 am
FCO
- STL
1 stop19h 19m
British Airways
Deal found 3/22![British Airways logo]()
$843
This eDestinos deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 4/217:45 am
STL
- FCO
2 stops47h 25m
Turkish Airlines
di 4/2810:45 am
FCO
- STL
2 stops41h 28m
Turkish Airlines
Deal found 3/22![Turkish Airlines logo]()
$853
This British Airways deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 4/269:40 pm
STL
- FCO
1 stop29h 25m
British Airways
vr 5/812:00 pm
FCO
- STL
1 stop14h 30m
British Airways
Deal found 3/23![British Airways logo]()
$854
One-way flights from St. Louis to Leonardo da Vinci/FiumicinoSearch for one-way flight options from St. Louis to Leonardo da Vinci/Fiumicino. Find affordable one-way fares based on user searches. Data last updated maart 24, 2026.
Search for one-way flight options from St. Louis to Leonardo da Vinci/Fiumicino. Find affordable one-way fares based on user searches. Data last updated maart 24, 2026.
This Trip.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 8/15:23 pm
STL
- FCO
1 stop32h 47m
Iberia
Deal found 3/24![Iberia logo]()
$355
This Air Canada deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 8/212:10 pm
STL
- FCO
1 stop16h 35m
Air Canada
Deal found 3/20![Air Canada logo]()
$361
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 8/27:22 am
STL
- FCO
2 stops17h 53m
United Airlines
Deal found 3/20![United Airlines logo]()
$362
This Air Canada deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 8/12:40 pm
STL
- FCO
2 stops38h 05m
Air Canada
Deal found 3/20![Air Canada logo]()
$370
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 8/16:48 pm
STL
- FCO
1 stop30h 07m
United Airlines
Deal found 3/20![United Airlines logo]()
$374
This Expedia deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 8/16:48 pm
STL
- FCO
2 stops32h 12m
Lufthansa
Deal found 3/24![Lufthansa logo]()
$381
This Cheapflightsfares deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 8/309:40 pm
STL
- FCO
1 stop12h 25m
British Airways
Deal found 3/20![British Airways logo]()
$389
This oojo deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 9/99:46 am
STL
- FCO
2 stops21h 34m
British Airways
Deal found 3/20![British Airways logo]()
$391
This oojo deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 7/317:26 pm
STL
- FCO
1 stop33h 39m
British Airways
Deal found 3/20![British Airways logo]()
$396
This oojo deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 7/201:14 pm
STL
- FCO
1 stop15h 51m
British Airways
Deal found 3/21![British Airways logo]()
$401
This American Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 7/296:00 am
STL
- FCO
1 stop20h 10m
American Airlines
Deal found 3/22![American Airlines logo]()
$402
This Expedia deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 7/315:33 pm
STL
- FCO
2 stops33h 47m
Air Canada
Deal found 3/20![Air Canada logo]()
$409
Find flight deals from St. Louis to Leonardo da Vinci/Fiumicino
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Leonardo da Vinci/Fiumicino (FCO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated maart 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $727 (FlightHub) |
One-way from | $361 (Air Canada) |
Popular in | June |
Cheapest in | February |
Average price | $836 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Leonardo da Vinci/Fiumicino 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, Cheapflights users made 2,558,603 searches. Data last updated maart 24, 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
Cheapest round-trip
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
za 9/12
5:32 pm-10:20 am
2 stops33h 48m
Rome Fiumicino
vr 9/18
6:50 am-1:25 pm
1 stop13h 35m
$935
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
ma 5/4
5:21 pm-6:00 pm
2 stops17h 39m
Rome Fiumicino
vr 5/15
10:30 am-10:19 pm
2 stops18h 49m
$938
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
vr 8/7
7:23 am-9:10 am
1 stop18h 47m
Rome Fiumicino
do 8/13
10:00 am-8:19 pm
1 stop17h 19m
$981
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
za 9/5
6:55 pm-7:55 am
1 stop30h 00m
Rome Fiumicino
za 9/19
6:50 am-8:00 pm
2 stops20h 10m
$1,011
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
za 5/9
4:15 pm-7:55 am
1 stop32h 40m
Rome Fiumicino
di 5/19
9:00 am-9:09 pm
1 stop19h 09m
$1,015
Quickest round-trip
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
ma 4/27
11:42 am-7:35 am
1 stop12h 53m
Rome Fiumicino
wo 5/6
9:00 am-4:42 pm
1 stop14h 42m
$1,056
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
wo 7/22
1:30 pm-12:40 pm
1 stop16h 10m
Rome Fiumicino
wo 8/5
10:00 am-11:01 pm
2 stops20h 01m
$1,071
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
di 6/2
4:25 pm-2:25 pm
2 stops15h 00m
Rome Fiumicino
di 6/9
6:30 am-4:53 pm
2 stops17h 23m
$1,337
Cheapest one-way
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
za 8/1
6:48 pm-7:55 am
1 stop30h 07m
$374
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
ma 7/20
1:14 pm-12:05 pm
1 stop15h 51m
$401
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Leonardo da Vinci/Fiumicino
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Leonardo da Vinci/Fiumicino in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on St. Louis-Rome Fiumicino Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Rome Fiumicino Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Rome Fiumicino Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Rome Fiumicino Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Rome Fiumicino Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Leonardo da Vinci/Fiumicino
Have a flexible travel schedule? Discover the best time to fly to Leonardo da Vinci/Fiumicino from St. Louis with our price prediction graph.
STL-FCO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Rome Fiumicino Airport
How far ahead should I book a flight from St. Louis to Rome Fiumicino Airport?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Leonardo da Vinci/Fiumicino. Price data was last updated on March 13, 2026.
To ensure you get the cheapest price possible for a flight from St. Louis to Rome Fiumicino Airport, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from St. Louis to Rome Fiumicino Airport?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Rome Fiumicino Airport (average of $455). Flying from St. Louis to Rome Fiumicino Airport in June is currently the most expensive (average of $1,002). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Rome Fiumicino Airport?
Reviews of airlines servicing Leonardo da Vinci/Fiumicino
Get insights into the airlines that provide service to Leonardo da Vinci/Fiumicino. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Leonardo da Vinci/Fiumicino. Reviews last updated maart 24, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from St. Louis to Rome Fiumicino Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Leonardo da Vinci/Fiumicino. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Rome Fiumicino Airport?
Book flights to Rome Fiumicino Airport if you plan to visit one of these locationsFiumicino
Montepulciano
Santa Marinella
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Leonardo da Vinci/Fiumicino flight routes
Other flight options
Other flights from St. Louis
Popular flights
Alternative routes for St. Louis to Leonardo da Vinci/Fiumicino
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Leonardo da Vinci/Fiumicino by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Leonardo da Vinci/Fiumicino by cabin class
Find flights from St. Louis to Leonardo da Vinci/Fiumicino, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Leonardo da Vinci/Fiumicino
Explore flights to Leonardo da Vinci/Fiumicino departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on maart 24, 2026.
St. Louis and Leonardo da Vinci/Fiumicino flights
Browse other St. Louis and Leonardo da Vinci/Fiumicino flight options. Last updated on maart 24, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on maart 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from St. Louis to Leonardo da Vinci/Fiumicino
Discover the top 7 airlines that operate flights from St. Louis to Leonardo da Vinci/Fiumicino. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated maart 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$472 | Average$1,087 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$506 | Average$987 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$506 | Average$884 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$543 | Average$976 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$555 | Average$857 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$665 | Average$936 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$724 | Average$1,200 | FlexibilityNo cancel fee | On-time67% |