$345+ Cheap flights from St. Louis (STL) to Fiumicino (FCO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCO
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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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 September 21, 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 September 21, 2026.
This Justfly.com deal was found by Cheapflights users on 9/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:30 am -
2 stops17h 25m
Tue 11/2411:15 am -
1 stop35h 11m
Deal found 9/19![Air Canada logo]()
$565
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 11/189:59 am -
1 stop14h 56m
Fri 11/271:15 pm -
2 stops32h 19m
Deal found 9/17![United Airlines logo]()
$576
This Justfly.com deal was found by Cheapflights users on 9/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
2 stops19h 55m
Fri 11/271:15 pm -
2 stops41h 09m
Deal found 9/16![Air Canada logo]()
$579
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 11/1010:53 am -
1 stop13h 52m
Tue 1/1211:15 am -
2 stops34h 13m
Deal found 9/16![United Airlines logo]()
$581
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:05 pm -
1 stop33h 50m
Tue 11/2411:15 am -
1 stop35h 11m
Deal found 9/16![Multiple Airlines logo]()
$585
This Justfly.com deal was found by Cheapflights users on 9/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:30 am -
2 stops20h 25m
Tue 1/1211:15 am -
2 stops31h 58m
Deal found 9/16![Air Canada logo]()
$589
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Sun 11/811:35 am -
2 stops17h 45m
Wed 11/1811:00 am -
1 stop16h 26m
Deal found 9/17![British Airways logo]()
$593
This American Airlines deal was found by Cheapflights users on 9/18. 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.
Mon 11/95:29 pm -
2 stops16h 26m
Wed 11/1811:00 am -
1 stop16h 26m
Deal found 9/18![American Airlines logo]()
$594
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
1 stop18h 45m
Wed 11/189:45 am -
1 stop14h 14m
Deal found 9/21![United Airlines logo]()
$596
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:29 pm -
2 stops16h 26m
Wed 11/187:30 am -
2 stops18h 52m
Deal found 9/20![American Airlines logo]()
$597
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 September 21, 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 September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 11/189:59 am -
1 stop14h 56m
Fri 11/271:15 pm -
2 stops32h 19m
Deal found 9/16![United Airlines logo]()
$576
This Delta deal was found by Cheapflights users on 9/21. 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.
Sun 11/156:00 am -
1 stop19h 15m
Wed 11/2510:00 am -
1 stop14h 14m
Deal found 9/21![Delta logo]()
$596
This Finnair deal was found by Cheapflights users on 9/19. 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.
Wed 11/1812:58 pm -
2 stops21h 57m
Mon 12/146:40 pm -
2 stops32h 39m
Deal found 9/19![Finnair logo]()
$607
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 3/176:30 am -
1 stop19h 25m
Wed 3/249:45 am -
1 stop17h 28m
Deal found 9/20![United Airlines logo]()
$601
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/610:35 am -
1 stop17h 25m
Thu 10/159:00 am -
1 stop18h 51m
Deal found 9/17![Delta logo]()
$695
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Tue 10/61:09 pm -
1 stop17h 06m
Thu 10/158:00 am -
2 stops18h 41m
Deal found 9/19![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Tue 10/2012:10 pm -
1 stop14h 05m
Tue 10/277:05 am -
2 stops19h 54m
Deal found 9/20![United Airlines logo]()
$795
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/273:40 pm -
1 stop19h 05m
Thu 1/71:30 pm -
2 stops32h 56m
Deal found 9/21![United Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Tue 12/296:58 pm -
1 stop29h 47m
Tue 1/51:30 pm -
1 stop31h 15m
Deal found 9/18![United Airlines logo]()
$889
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 September 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated September 21, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 9/231:36 pm -
1 stop15h 44m
Thu 10/12:20 pm -
1 stop37h 16m
Deal found 9/16![United Airlines logo]()
$702
This FlightHub deal was found by Cheapflights users on 9/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:49 pm -
1 stop12h 21m
Wed 10/710:00 am -
1 stop17h 57m
Deal found 9/20![British Airways logo]()
$686
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Tue 9/2912:10 pm -
1 stop14h 05m
Wed 10/710:20 am -
2 stops16h 21m
Deal found 9/18![United Airlines logo]()
$698
This Delta deal was found by Cheapflights users on 9/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:00 pm -
2 stops16h 00m
Wed 10/710:10 am -
2 stops17h 41m
Deal found 9/20![Delta logo]()
$699
This Justfly.com deal was found by Cheapflights users on 9/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:31 am -
2 stops18h 24m
Tue 10/201:30 pm -
1 stop16h 34m
Deal found 9/19![British Airways logo]()
$692
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 10/510:29 am -
1 stop17h 31m
Tue 10/2010:10 am -
2 stops20h 44m
Deal found 9/16![Delta logo]()
$700
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/610:35 am -
1 stop17h 25m
Thu 10/159:00 am -
1 stop18h 51m
Deal found 9/17![Delta logo]()
$695
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Tue 10/139:30 am -
2 stops16h 45m
Tue 10/2010:20 am -
2 stops18h 01m
Deal found 9/20![United Airlines logo]()
$649
This Justfly.com deal was found by Cheapflights users on 9/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:10 pm -
1 stop14h 05m
Tue 10/206:50 am -
1 stop13h 35m
Deal found 9/20![Multiple Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 10/168:00 am -
2 stops17h 15m
Tue 10/203:20 pm -
2 stops27h 02m
Deal found 9/17![United Airlines logo]()
$701
This KAYAK deal was found by Cheapflights users on 9/17. 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.
Sat 10/247:01 pm -
1 stop30h 44m
Mon 11/28:05 pm -
2 stops32h 47m
Deal found 9/17![Multiple Airlines logo]()
$684
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 September 21, 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 September 21, 2026.
This oojo deal was found by Cheapflights users on 9/16. 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.
Sun 3/71:08 pm -
1 stop11h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Lufthansa logo]()
$345
This oojo deal was found by Cheapflights users on 9/17. 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.
Sun 2/76:30 am -
1 stop18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Lufthansa logo]()
$346
This Expedia deal was found by Cheapflights users on 9/20. 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.
Sun 3/711:31 am -
2 stops17h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![British Airways logo]()
$349
This oojo deal was found by Cheapflights users on 9/19. 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.
Sat 2/65:20 pm -
1 stop31h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Lufthansa logo]()
$352
This FlightHub deal was found by Cheapflights users on 9/18. 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.
Sun 2/71:40 pm -
2 stops20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![British Airways logo]()
$356
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sat 2/68:25 am -
2 stops41h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/67:02 pm -
3 stops47h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:00 pm -
3 stops44h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$394
This Thrive Travel deal was found by Cheapflights users on 9/16. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:06 pm -
1 stop13h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Iberia logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:29 pm -
3 stops57h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$405
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 September 21, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $565 (Justfly.com) |
One-way from | $345 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,180 |
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 7,457,451 searches. Data last updated September 21, 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 Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 3/7
11:31 am-12:20 pm
2 stops17h 49m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$349
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 2/6
7:02 pm-1:20 am
3 stops47h 18m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$384
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 11/8
9:59 am-7:55 am
1 stop14h 56m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$447
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 11/8
7:26 am-7:55 pm
2 stops29h 29m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$453
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 3/7
3:40 pm-7:30 pm
3 stops44h 50m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$520
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 9/26
11:01 am-9:10 am
1 stop15h 09m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$534
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Wed 9/30
12:00 pm-10:50 am
1 stop15h 50m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$539
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Wed 9/30
10:29 am-11:00 am
1 stop17h 31m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$539
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 9/26
8:55 am-9:15 am
2 stops17h 20m
Rome Fiumicino
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$574
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Wed 11/18
9:59 am-7:55 am
1 stop14h 56m
Rome Fiumicino
Fri 11/27
1:15 pm-2:34 pm
2 stops32h 19m
$576
Showing 1-10 of 20 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Rome Fiumicino Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on St. Louis-Rome Fiumicino Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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?
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 49 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, February is the cheapest month in which you can book a flight from St. Louis to Rome Fiumicino Airport (average of $634). Flying from St. Louis to Rome Fiumicino Airport in June is currently the most expensive (average of $1,686). 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?
Airfare is below average for this route at the moment.
St. Louis to Rome Fiumicino Airport flights typically cost between $994 and $1,230 in November.The cheapest round-trip price found within the last 5 days was $565 on Air Canada (Nov 8-Nov 24).
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 September 21, 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.
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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
Civitavecchia
Montepulciano
Santa Marinella
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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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$472 | Average$1,200 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$500 | Average$993 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$506 | Average$934 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$601 | Average$1,122 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$744 | Average$1,194 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$810 | Average$1,225 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$867 | Average$1,085 | FlexibilityNo cancel fee | On-time71% |